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Table of Content

    25 July 2023, Volume 62 Issue 7
    Breeding & Cultivation
    Analysis on resource input and economic benefit of rice and crayfish co-culture in different ecological regions
    ZHANG Wen-yu, DAI Ran-xin, CHEN Song-wen, LI Zhun, CAO Cou-gui, WANG Jin-ping
    2023, 62(7):  1-6.  doi:10.14088/j.cnki.issn0439-8114.2023.07.001
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    In 2018, a questionnaire survey was conducted among typical farmers in Eastern Hubei Province along the Yangtze River Plain, hilly land of north central Hubei Province and the Jianghan Plain. And Cobb-Douglas production function was used to evaluate the resource utilization and economic benefits of the rice and crayfish co-culture model in these three regions. The results showed that there were differences in resource input structure, economic output and benefits in three different ecological areas of Hubei Province. The results of Cobb-Douglas production function showed that the main factor affecting the economic benefits of paddy fields in Eastern Hubei Province along the Yangtze River Plain was the input of circulating capital,and fertilizer input was negatively correlated with rice equivalent yield. There was a significant positive correlation between planting and breeding years and economic benefits of rice and crayfish co-culture in Jianghan Plain(P<0.05). Reducing labor input and increasing mechanization level could significantly improve the equivalent yield of rice in hilly land of north central Hubei Province. Compared with hilly land, the water resources utilization efficiency and mechanization in plain areas was high, and the investment of working capital had a significant impact on increasing economic benefits, which was more suitable for the development of rice and crayfish co-culture. Moreover, through reasonable regulation of resource investment and capital investment, the impact on the environment could be reduced or avoided while ensuring economic benefits.
    Screening and comprehensive evaluation of maize varieties resistant to ear rot in Southwest China
    LI Hui, GOU Xiao-song, ZHANG Xiao-wei, SONG Cheng-xiao, DUAN Ming-yu, CHEN Xiao-cui
    2023, 62(7):  7-11.  doi:10.14088/j.cnki.issn0439-8114.2023.07.002
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    To screen out new maize (Zea mays L.) varieties with ear rot resistance suitable for planting in Southwest China, 42 maize varieties in Southwest China were selected for disease resistance identification and analysis of yield related traits using a randomized block design. The results showed that, different varieties had different resistance to corn ear rot, stem rot, sheath blight and other fungal diseases. Among them, Fengyu 799, Qiushuoyu No.2, Guidan 162 and Zhengda 615 had the best comprehensive resistance, reaching the high resistance (HR) level. In addition, the plant height, ear height, ear length, ear diameter, bald tip length, row number per ear, grain number per row, 100-seed weight, seed rate and yield of different varieties were significantly different; the average yield of the varieties ranged from 4 118.10 to 9 855.60 kg/hm2, among which the yield of Shuijingdan 15 had the highest yield (9 855.60 kg/hm2), followed by that of Qiushuoyu No.2 (9 758.25 kg/hm2). On the whole, Qiushuoyu No.2, Fengyu 799, Jingyu No.1, Shuijinyu No.6, Zhenghong 311 and Zhongyu 335 had better comprehensive disease resistance and higher yields, which were suitable for new maize varieties with ear rot resistance planted in Southwest China.
    Resource & Environment
    The influence of meteorological elements on the yield and quality of spring corn in Longdong
    ZHANG Ke-xin, GUO Tong, YU Xiao, ZHAO Yu-juan, LIU Dong-hui
    2023, 62(7):  12-18.  doi:10.14088/j.cnki.issn0439-8114.2023.07.003
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    Based on the meteorological element data of Xifeng District from 1961 to 2020 and the regional joint test of maize in the national agrometeorological experimental station (the spring corn sowing test in Xifeng District by stages) from 2018 to 2020, the impact of meteorological elements on the yield and quality of spring corn(Zea mays) in Longdong was explored. The results showed that the annual average temperature, the annual average maximum temperature, the annual average minimum temperature, and the accumulated temperature ≥10 ℃ in Xifeng District from 1961 to 2020 showed a significant upward trend, while the annual precipitation and sunshine duration showed a decreasing trend and were not significant;during the stage sowing period, different years and sowing dates had different meteorological conditions. During the jointing and tasseling period, spring corn required a large amount of water. The precipitation in 2018 was the highest, which was beneficial for its growth. In 2020, spring drought was encountered, which was unfavorable for the growth of spring corn. In 2020, continuous rainy days were long and of a large magnitude, which affected the pollination and filling of spring corn;the effect of the matching degree of light, heat, and water on the growth and development of spring corn during SD2(2 May) and SD3(12 May) sowing dates was higher than that of other sowing dates each year; the increase of temperature after emergence, the increase of accumulated temperature ≥10 ℃ at emergence to seven-leaf stage and milk mature stage, the increase of precipitation at seven-leaf to milk mature stage, and the increase of sunshine duration at emergence to seven-leaf stage were all conducive to the increase of spring corn yield. Sowing from late April to mid-May could increase the crude protein and fat content of spring corn, but the effect on the crude starch content was not significant. The planting of spring corn in Longdong should choose the appropriate sowing date based on different climatic years.
    Study on the driving factors of agricultural water consumption evolution in different regions of China in recent 20 years
    WU Yi-tong, ZHU Ling-yi, WU Min
    2023, 62(7):  19-23.  doi:10.14088/j.cnki.issn0439-8114.2023.07.004
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    The panel data of 31 provinces(cities, autonomous regions) was used, and provinces (cities, autonomous regions) were divided into six regions. The driving factors of agricultural water consumption were decomposed into six major driving factors: agricultural water consumption intensity, agriculturalization, provincial economic development, regional economic development, economic growth(national per capita economic level) and population size by LMDI model, and the impact of each driving factor on agricultural water consumption was explored. The results showed that the agricultural water consumption intensity and agriculturalization promoted the reduction of agricultural water consumption, and the agricultural water consumption intensity effect was the dominant effect; the economic growth and population size inhibited the reduction of agricultural water consumption, and the economic growth effect was the dominant effect. Based on the results, the following recommendations were put forward: economic development should be balanced with water consumption intensity to achieve a new normal of water-saving economic growth; regional economic development differences should be reduced to control their negative effects on water conservation; and funds should be invested to strengthen the intensity effect of water consumption.
    Measurement and spatial pattern of urban water resources utilization efficiency in China
    CHEN Chen, LIU Peng-hui, WANG Zi-xiao
    2023, 62(7):  24-31.  doi:10.14088/j.cnki.issn0439-8114.2023.07.005
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    The DEA model of the hybrid network structure of the water resources system based on the direction distance function was constructed to measure the overall efficiency, water use stage and sewage treatment stage efficiency of urban water resource utilization in China, and the spatial pattern was studied by Moran's I index. The results showed that, from 2008 to 2017, the overall efficiency of urban water resources utilization was low and the level of water resources utilization efficiency varied significantly between regions. The efficiency of the water use stage was generally higher than that of the sewage treatment stage, both of them showed an upward trend. There was a significant spatial correlation between the overall efficiency of urban water resource utilization, and the phenomenon of spatial agglomeration presented a trend of first declining and then increasing.
    Calculation of cultivated land utilization efficiency and analysis of Gini coefficient in Yunnan Province based on random forest
    LI Hao-xun, ZHENG Hong-gang, LIU Shu-xia, ZHAO Hao, CHEN Ran
    2023, 62(7):  32-37.  doi:10.14088/j.cnki.issn0439-8114.2023.07.006
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    Taking 16 autonomous prefectures and cities of Yunnan Province from 2011 to 2020 as the research object, data of 10 indicators such as agricultural machinery power and labor force per land was collected, and the weights of these indicators were obtained by using the random forest algorithm in R language. On the basis of this, the cultivated land use efficiency of the 16 prefectures and cities was obtained. The Gini coefficients of cultivated land use efficiency among six groups of different regions were calculated according to the Gini coefficient mean difference formula. The results showed the average cultivated land utilization efficiency of Diqing Tibetan Autonomous Prefecture, Dehong Dai and Jingpo Autonomous Prefecture, Nujiang Lisu Autonomous Prefecture, and Dali Bai Autonomous Prefecture was high from 2011 to 2020, while the average cultivated land utilization efficiency of Pu'er City and Lincang City was relatively low; compared with other five groups of different regions, the Gini coefficient of cultivated land utilization efficiency of central and western Yunnan decreased as a whole, while the average Gini coefficients of central and southern Yunan, and southern and northern Yunnan were the smallest in the 6 groups of different regions.
    Land use change and landscape ecological risk assessment in Chongqing from 2000 to 2020
    SUN Gui-yan, DAI Yun-chuan
    2023, 62(7):  38-43.  doi:10.14088/j.cnki.issn0439-8114.2023.07.007
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    Based on the land use data of Chongqing in 2000, 2010, and 2020, the dynamic changes in land use characteristics were, and analyzed an ecological risk assessment model was established using the landscape vulnerability index and landscape pattern index to evaluate the spatiotemporal changes in ecological risk. The results indicated that from 2000 to 2020, the main types of land use in Chongqing were arable land and forest land;the area of artificial surface, forest land, and water bodies continued to increase, while the area of arable land, grassland, shrubland, and wetland continued to decrease. Among them, the area of artificial surface had significantly increased, mainly from arable land;the landscape ecological risks in various periods of Chongqing showed a positive agglomeration effect in space, while the high high agglomeration areas showed a decreasing trend;Chongqing was mainly located in areas with medium and low ecological risks, with overall ecological risks gradually weakening. Differentiated land use measures needed to be taken for different ecological risk areas.
    Distribution of heavy metals (including metalloids) in Weinan section of the lower Weihe River and assessment of water environment quality
    QUAN Qing-zhou
    2023, 62(7):  44-50.  doi:10.14088/j.cnki.issn0439-8114.2023.07.008
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    Four sections were selected in the Weinan section of the lower reaches of the Weihe River, including Shuyuan Reservoir, Shicun Reservoir, Zhuhe Reservoir, and the intersection of the three rivers,samples would be taken once a month from January to September 2019 to determine the content of 7 heavy metals (including metalloids) in water, including Cu, Zn, Pb, Cd, Cr6+, Hg and As, and their distribution characteristics and pollution status were analyzed. At the same time, based on the water environment quality monitoring data of the Shuyuan Reservoir monitoring section, a fuzzy matter-element evaluation model for water environment quality based on entropy weight was introduced to comprehensively evaluate the water environment quality of the study area. The results showed that the contents of Cu, Pb, Cd, Cr6+, Hg and As met the ClassⅠstandard for surface water environmental quality, and the content of Zn met the Class Ⅱ standard for surface water environmental quality. Pb was the main potential ecological risk factor. The water quality of the lower reaches of the Weihe River was generally good, and the main pollution indicators were dissolved oxygen, chemical oxygen demand, permanganate index and total nitrogen.
    Identification and diversity of the contaminative microorganisms in germination rate test of rice seeds
    XIAO Wan-yu, SUN Yi-jia, ZHOU Xian-yu, REN Hai-long, ZHANG Jing, HUANG Jiang-hua, XU Dong-lin
    2023, 62(7):  51-56.  doi:10.14088/j.cnki.issn0439-8114.2023.07.009
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    To understand the diversity of contaminative microorganisms that may affect the result of rice (Oryza sativa L.) seed germination rate test, high-throughput sequencing and taxonomic identification for the moldy pollutants produced during the test were carried out on eight rice seed samples collected from the annual seed quality inspection task in Guangdong Province, China. The results showed that a total of 208 genera, 104 families, 71 orders, 35 classes, and 20 phyla of bacteria were identified from the moldy pollutants, with Proteobacteria as the dominating phylum whose average relative abundance was 63.2%, and Gammaproteobacteria as the dominating class (average relative abundance: 48.2%). Clostridium, Burkholderia, Enterobacter and Klebsiella were the four most abundant bacterial genera whose average relative abundances were 20.2%, 18.0%, 7.5% and 5.1%, respectively. On the other hand, a total of 87 species, 85 genera, 61 families, 37 orders, 17 classes, and 7 phyla of fungi were identified in the aforementioned moldy pollutants. Ascomycota and Mucoromycota represented 59.0% and 18.5%, respectively, of the fungal community. Eurotiomycetes (42.0%), Mucoromycetes (18.5%) and Sordariomycetes (12.9%) were the three most abundant fungal classes, whereas Aspergillus (38.4%), Rhizopus (18.5%) and Fusarium (9.0%) were the three most abundant genera. Furthermore, Aspergillus flavus (average relative abundance: 31.6%) and Rhizopus microsporus (average relative abundance: 16.4%) made up near one half of the fungal abundance.
    Effects of Eupatorium adenophorum invasion on the diversity of soil animal community structure
    HU Zhan-yu, ZHOU Jian-song, LIU Wei, CHANG Zheng, YON Chun-Mei
    2023, 62(7):  57-62.  doi:10.14088/j.cnki.issn0439-8114.2023.07.010
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    In order to study the effects of Eupatorium adenophorum Spreng on soil animal communities of different habitats, soil animals of grassland, cedar forest, broad-leaved forest and bamboo forest were investigated and analyzed in Laojunshan National Nature Reserve, Wenshan. The results showed, 11 116 soil animal specimens were collected in various places, belonging to 2 phyla, 6 classes, 14 orders and 41 families. The dominant menoptera groups were Tubificida, Acariformes, Parasiformes, Collembola and Hymenoptera. The values of various diversity indexes of soil animals in different habitats after the invasion of Eupatorium adenophorum Spreng were less than those of non invasion, indicating that the species richness, acquisition probability of the same species, species diversity and evenness of individual number distribution all showed a downward trend after the invasion. Except for broad-leaved forest, some diversity indexes of the other three habitats between invasion and non invasion showed significant differences in the four diversity indexes(P<0.05).
    Species diversity of wood-inhabiting-fungi in Funiu Mountain in Luoyang City, Henan Province
    GAO Yan-qi, SONG Yu-kun, LI Lin-bo, CHEN Jia-jia, ZHANG Dang-quan, LI Ming-wan, CHEN Yuan-yuan
    2023, 62(7):  63-68.  doi:10.14088/j.cnki.issn0439-8114.2023.07.011
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    Wood-inhabiting-fungi resources were investigated in forest parks and nature reserves of Baiyun Mountain, Laojun Mountain, Longchiman and Muzhaling in Funiu Mountain, Luoyang City, Henan Province. More than 200 samples of the wood-inhabiting-fungi were obtained. Through morphological and molecular systematil studies, 76 species of wood-inhabiting-fungi were identified, belonging to 8 orders, 33 families and 59 genera in Basidiomycetes, Agaricomycetes. Among them, 18 species were newly recorded in Henan Province. The dominant family (Species≥10) were Polyporales and Hymenochaetaceae, and the dominant genus (Species≥5)was Trametes.
    Plant Protection
    Effects of different female-male ratios and feeding density on spawning capacity and hatchability of Coccinella septempunctata
    LIU Ting, LIU Dong-yang, TIAN Shui-sheng, YU Jia-min, WANG Yong, JIANG Lian-qiang, GUO Shi-ping, LI Bin, WU Xing-long, XIAO Ke-jun, LIU Hong-ling, PU De-qiang
    2023, 62(7):  69-72.  doi:10.14088/j.cnki.issn0439-8114.2023.07.012
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    Using Aphis craccivora K. as the diet, the effects of different female-male ratios on the laying capacity and hatchability of Coccinella septempunctata under the same feeding density were studied. And using the ratio of 3∶1 as the preferred female-male ratio, the effect of raising Coccinella septempunctata of different densities in a 1 000 mL container on its spawning volume and hatchability was studied. The results showed that spawning volume by Coccinella septempunctata was significantly higher when the female-male ratios were 1∶1, 2∶1 and 3∶1 than those of 4∶1 and 5∶1. With a female-male ratio of 3∶1, the spawning volume of 9 females and 3 males in a container of 1 000 mL was significantly higher than that of 3 females and 1 male, 6 females and 2 males, 12 females and 4 males, 15 females and 5 males. The female-male ratios and the feeding density had no significant effect on hatchability.
    Horticulture & Local Products
    Effects of application of garbage enzyme on the growth and quality of pine willow sprouts
    YAN Bing-jie, DENG Zi-xuan, WANG Yi-he, REN Wen-zhuo, LI Jun-yang, NAN Song-jian
    2023, 62(7):  73-79.  doi:10.14088/j.cnki.issn0439-8114.2023.07.013
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    A single-factor multilevel method was used to study the effects of different dilutions of garbage enzyme diluents and different water and fertilizer combinations on germination, growth and quality of pine willow. The growth indexes such as germination potential, germination rate, single plant fresh weight, plant height, root length and stem thickness, and quality indexes such as vitamin C content, soluble sugar content and protein content were measured for each treatment. The results showed that 100 times of garbage enzyme diluent was the most effective in promoting the germination of pine willow seeds, and its germination potential and germination rate increased by 15.15% and 6.42%, respectively, compared with the control; 100 times of garbage enzyme diluent was the most effective in promoting the growth and development of pine willow sprouts, and its vitamin C content, soluble sugar content and protein content increased by 32.85%, 36.81% and 14.11%, respectively, compared with the control; with the increase of diluent ratio, the promoting effect of garbage enzyme on each index of pine willow increased first, then decreased and then tended to be stable; among different water and fertilizer matching modes, soaking seeds, watering and spraying fertilization all used 100 times garbage enzyme diluent had the best comprehensive promoting effect on each index.
    Effects of different foliar fertilizers and biological regulators on the growth of different types of garlic
    LIU Guo-wei, GAO Yuan-yuan, LI Si-qi, ZHU Chun-yu, TAN He, REN Yan-yun, ZHANG Long-ping
    2023, 62(7):  80-83.  doi:10.14088/j.cnki.issn0439-8114.2023.07.014
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    During the period from garlic turning green to flower bud differentiation, the effects of different types of foliar fertilizers and biological regulators on the growth of aboveground plants and underground bulbs of different types of garlic were studied using the method of foliar spraying. The results showed that different treatments had a relatively significant impact on the purple garlic variety Jisuan No. 3, while had a relatively small impact on the white garlic variety Jinxiang White Garlic. However, both treatments could improve the bolting traits and yield of the two types of garlic varieties. Foliar spraying of bacillus subtilis could promote the growth of aboveground plants of Jisuan No. 3. Spraying of bacillus subtilis and macronutrient water soluble fertilizer had a better promotion effect on the underground bulbs of Jisuan No. 3, which could significantly improve the yield and commodity quality of bulbs. Spraying humic acid water soluble fertilizer could promote the growth of aboveground plants and underground bulbs of Jinxiang White Garlic.
    Effects of Solanum spp. weed straw on growth and nutrient uptake of Cyphomandra betacea seedlings
    DAI Jing-tong, WANG Jiang-yue, LI Rui, CHENG Qi, WANG Hua, DENG Li-li, LIN Li-jin, HU Rong-ping
    2023, 62(7):  84-88.  doi:10.14088/j.cnki.issn0439-8114.2023.07.015
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    To explore the effects of different Solanum spp. weeds straws on the growth and nutrient absorption of fruit trees, the effects of four Solanum spp. weeds (Solanum nigrum, Solanum diphyllum, Solanum alatum and Solanum nigrum var. humile) straws on the growth and nutrient absorption of Cyphomandra betacea seedlings were studied through a pot experiment. The results showed that the straws of Solanum nigrum var. humile and Solanum nigrum treatments increased the biomass and photosynthetic pigments (chlorophyll a, chlorophyll b, total chlorophyll and carotenoids) contents of Cyphomandra betacea seedlings to a certain extent, and the other two straws treatments had no significant effects. The straws of Solanum diphyllum and Solanum nigrum treatments enhanced the superoxide dismutase activity of Cyphomandra betacea seedlings, and the other two straws treatments had reducing effects. The straws of four Solanum spp. weeds treatments had no significant effects or reducing effects on the peroxidase activity, catalase activity and soluble protein content of Cyphomandra betacea seedlings. The straw of Solanum diphyllum treatment increased the total nitrogen, total phosphorus and total potassium contents in Cyphomandra betacea seedlings, and the other three straws treatments had no significant effect or reducing effects to a certain extent.
    The responses of Amorpha fruticosa ‘Jinye' to drought stress
    CHEN Bo, FAN Ji-hong, LI Yu-shu, ZOU Yuan-dong, SHI Jin-chao, YU hai-qun
    2023, 62(7):  89-94.  doi:10.14088/j.cnki.issn0439-8114.2023.07.016
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    In order to investigate the effects of continuous drought stress on characteristics of morphology, growth and physiology of Amorpha fruticosa ‘Jinye', and find out its drought-resistances, two-year-old cuttage seedlings of A. fruticosa ‘Jinye' were used as experimental materials, and cuttage seedlings of A. fruticose L. were used as control materials. Potted and continuous drought treatment methods were used to study the effect of drought stress on growth and the physiological indexes such as osmoregulation. The results showed that with the prolongation of drought stress time, the relative water content of soil gradually decreased, and soil relative water content of A. fruticose ‘Jinye' decreased more. At the end of 30-day drought stress, the soil of A. fruticose ‘Jinye' was severely arid, and the relative water content was 24.42%. During the experiment, the seedling height increased continuously and the ground diameter increased first and then decreased, but the increment of seedling height and ground diameter decreased continuously, which indicated that drought stress inhibited the growth of seedling height and ground diameter of the two trees. The contents of MDA and soluble sugar in A. fruticose ‘Jinye' and A. fruticose L. increased gradually with the extension of drought stress time; Proline (Pro) content of A. fruticose ‘Jinye' displayed a trend of first increased and then decreased, while A. fruticosa L. continued to increase. In addition, subordinate function was used to rank their drought resistance and the order was A. fruticose L.> A. fruticose ‘Jinye'. Grey relational analysis found that, plant height and MDA content had the highest correlation with drought resistance, followed by Pro and soluble sugar content. The indicators of A. fruticose ‘Jinye' responded well under drought stress, and A. fruticose ‘Jinye' showed a certain ecological adaptability, which was suitable for planting in arid areas, and could be used as an excellent colorful tree species in arid areas with little rainfall.
    Study on seed dormancy and germination characteristics of Toxicodendron succedaneum
    CHEN Fa-zhi, TONG Jun, YANG Shou-kun, ZHAI Jing-hua, GAO Hui-jiang, LIU Zhong
    2023, 62(7):  95-100.  doi:10.14088/j.cnki.issn0439-8114.2023.07.017
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    In order to explore the dormancy causes, dormancy release methods and germination characteristics of Japanese wild lacquer(Toxicodendron succedaneum) seeds, mature Japanese wild lacquer seeds were used as materials to observe their morphological structure and water absorption, determine the effects of methanol extracts from different parts of Japanese wild lacquer seeds on the germination and growth of Chinese cabbage seeds, compare the effects of different dewaxing treatments combined with gibberellin soaking on the germination rate of Japanese wild lacquer seeds, and determine the changes of physiological and biochemical indexes during seed germination of Japanese wild lacquer. The results showed that, the seeds of Japanese wild lacquer tree had poor water permeability and physical dormancy. The water absorption rate was only 34.17% after soaking in clean water for 15 days, and the water absorption rate reached 77.12% after acid etching treatment and soaking in clean water for 5 days. The endotesta extract of Japanese wild lacquer had a significant inhibitory effect on the germination and growth of Chinese cabbage seeds. The endotesta contained endogenous substances that inhibited germination and had physiological dormancy. 98% H2SO4 dewaxing treatment for 20 min combined with soaking seeds in 300 mg/L gibberellin solution for 12 h could break the seed dormancy of Japanese wild lacquer tree, significantly improve the germination potential and germination rate compared with the control, and make the germination early and neat. The seed germination potential reached (54.33±0.58)% and the germination rate reached (97.67±2.52)%. The seeds started to germinate on the 3rd day and all had germinated on the 10th day. During seed germination, the contents of soluble sugar and soluble protein decreased significantly, the activity of POD and α-amylase increased significantly. The contents of ABA and GA3 in the seeds of Japanese wild lacquer tree were higher and lower in the dormancy stage. The content of GA3 increased sharply in the imbibition stage. After the radicle grew, the contents of ABA and GA3 decreased significantly.
    Aquatic Sciences
    Analysis of plankton community composition and its dynamic change in rice-crayfish field
    SONG Guang-tong, WANG Fen, JIANG Ye-lin, CHEN Zhu, XU Xiao-na, MA Jia-hao, ZHOU Xiang, WANG Jia-jia, XU Bin, ZHU Shi-ming
    2023, 62(7):  101-106.  doi:10.14088/j.cnki.issn0439-8114.2023.07.018
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    In order to study the plankton community composition and its annual dynamic change characteristics in the rice-crayfish field, monthly plankton samples were collected, and the structure, diversity, species and quantity of plankton community were detected and analyzed. The results showed that:①In the ditches, there were 125 species of phytoplankton in 7 phyla, significantly higher than that in field surface, and 57 species of zooplankton in 4 species were determined, which had no significant difference from the field surface; The species number of chlorophyta and protozoa were absolute dominant. ②The annual average values of diversity index, richness index and evenness index of phytoplankton in ditches which for crayfish lived were 1.944, 2.481 and 0.540, respectively; there was no significant difference in diversity index between the two fields. The diversity index, richness index and evenness index of zooplankton in ditches were 1.726, 1.865 and 0.654, respectively. The diversity index was the lowest in April and the highest in August. ③Oocystis sotilaria was dominant species from October to march and April of the following year, Tribonema vulgare Pasch was dominant species from May to September, and Scenedesmus quadricauda was dominant species from June to October. The dominant species were copepodite in December and February. The nauplii in March and April were the dominant species in the field surface, and in ditches,Tintinnopsis was dominant species in April, the dominant species were all Pelomyxa palustris Greeff. from May to August, and Moina affinis Birge. was all dominant species from September to November. ④The annual average density of phytoplankton was 1 403 858 ind/L, the annual average biomass was 0.155 37 mg/L, the density in March was the highest and in February was the minimum, the biomass in May was the highest and in October was the minimums, and the density and biomass of phytoplankton in the ditches were higher than those in the field surface. The annual density and biomass of zooplankton were 4 248 ind/L and 9.28 mg/L respectively in the field surface, the density was the highest in April and minimum in February, the biomass was the highest in December and minimum in February. The density and biomass of zooplankton in the field were higher than that in the ditch.
    Storage & Processing
    Effects of cigar leaves fermentation by Bacillus licheniformis on aroma components formation
    HU Lu-lu, SONG Wen, YU Jun, YANG Chun-lei, WANG Zhi, CHEN Xiong
    2023, 62(7):  107-112.  doi:10.14088/j.cnki.issn0439-8114.2023.07.019
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    CX-014 cigar leaves as raw materials were used to study the effects of nutrients and Bacillus licheniformis on the aroma components production efficiency and the quality of cigar leaves. The results showed that the nutrient formula obtained by orthogonal optimization experiments was 3.0% glucose, 0.6% glutamate and 0.6% diammonium phosphate. The total content of aroma substances fermented by 7 d with added nutrient (test group) reached 635.2 μg/g, which was 16.4% higher than that of the natural fermentation. The carotenoid transformation products, phenylalanine transformation products and brown reaction products increased by 38.2%, 159.6% and 75.9% compared with natural fermentation, respectively. Then, the test group inoculated with Bacillus licheniformis (2×108 CFU/g, optimized group) had been fermented for 7 days. Compared with the test group, the total content of aroma substances was 791.6 μg/g, which was increased by 24.6%; the content of carotenoid transformation products (63.3 μg/g) and the brown reaction products (25.2 μg/g) was increased by 45.9% and 27.9%, respectively.
    Study on the optimization of curing process of K326 in the yellowing period
    YAO Gang, YIN Gang, REN Ru-zhou, WANG Fei, WANG Feng-ling, WANG Chang-jie, MA De-sheng, ZOU Cong-ming
    2023, 62(7):  113-119.  doi:10.14088/j.cnki.issn0439-8114.2023.07.020
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    In order to optimize the curing technology of the standardized intensive curing barn,and explore the best curing temperature and humidity combination, the sets of temperature and humidity combinations tests were conducted. That was the upper, middle and lower leaves of the K326 flue-cured tobacco varieties used as test materials at the yellowing stage to study the effect of water loss rate,chlorophyll degradation rate, and economic traits of tobacco leaves with the temperature in 30~48 ℃ and relative humidity in the 70%~85%. The results showed that when temperature and humidity were too higher or too low at the yellowing stage, or the water loss rate and yellowing of tobacco leaves were uncoordinated, it was easy to produce bad tobacco leaves; the chlorophyll degradation rate of different parts of tobacco leaves was less affected by the temperature and humidity during the yellowing stage; the lower leaves had the best economic traits with temperature of 38 ℃ and relative humidity of 80%,and the superior proportion, the mid-superior proportion and the average price were 50.35%,83.88%,and 31.57 yuan/kg, respectively; the middle leaves had the best economic traits with temperate of 38 ℃ and relative humidity of 75%, and the superior proportion, the mid-superior proportion and the average price were 53.53%,89.25%, and 33.76 yuan/kg, respectively; the upper leaves had the best economic traits with temperature of 40 ℃ and relative humidity of 75%,and the superior proportion, the mid-superior proportion and the average price were 56.23%, 88.91%, and 34.09 yuan/kg, respectively.
    Study on physicochemical properties and antioxidation of Ziziphus jujuba ‘Lingwuchangzao' fruit during frozen storage
    YUAN Qin, MA Guo-juan, REN Yu-feng, MA Ting-ting, TANG Wen-lin, KANG Peng, XU Wen-di, ZHOU Jun
    2023, 62(7):  120-125.  doi:10.14088/j.cnki.issn0439-8114.2023.07.021
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    Using Ziziphus jujuba ‘Lingwuchangzao' fruits as test materials, the contents of soluble solids, titratable acid, vitamin C, total phenolics, total flavonoids, the scavenging rates of O2-· and DPPH· were determined and analyzed after frozen storaged at -18 ℃. The results showed that under the condition of frozen storage, with the passage of frozen storage time, the contents of soluble solids, titratable acid, vitamin C, total phenolics and total flavonoids in Ziziphus jujuba ‘Lingwuchangzao' fruits decreased gradually, and the capability of scavenging O2-·and DPPH· also decreased gradually. The contents of vitamin C and total phenolics were extremely significantly positively correlated with the scavenging rate of O2-·(P<0.01), and total flavonoids content was significantly positively correlated with the scavenging rate of O2-·(P<0.05), indicating that these three substances were the main effects of scavenging O2-·. Moreover, frozen storage could maintain certain DPPH· reduction ability of Ziziphus jujuba ‘Lingwuchangzao' fruits. The rapid decrease of vitamin C content caused the total phenolics and total flavonoids to maintain the antioxidant effect of jujube fruit in the later stage of frozen storage.
    Detection Analysis
    Quality evaluation of nutritional and functional components in Camellia sativa plants
    LI Fei-fei, WEI Yue, YU Li-qin, ZHANG Tao-tao, SONG Meng-jiao, ZHU Jie, FAN Yi
    2023, 62(7):  126-129.  doi:10.14088/j.cnki.issn0439-8114.2023.07.022
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    In order to clarify the nutritional and functional components of the Camellia sativa plant and evaluate its quality, the Camellia sativa plant in Tangyin County, Anyang City, Henan Province was selected as the research object to determine the content of its main nutritional and functional components, such as water, total ash, crude fat, crude fiber, crude protein, amino acid, total flavonoids, phytosterols, etc. The results showed that the Camellia sativa plant had the highest crude fiber content (58.70%), crude protein content of 4.84%, and water-soluble and alcohol soluble extracts content of 11.1% and 5.7%, respectively. At the same time, the Camellia sativa plant contained abundant 13 amino acids, with a total content of 7.27%, among which the glutamic acid content was relatively high, at 4.14%. In addition, Camellia sativa plants contained selenium, with calcium having the highest trace element content at 320.3 mg/kg. They also contained abundant plant sterols, total polyphenols, and total flavonoids. In summary, Camellia sativa plants contained abundant crude fiber, trace elements, amino acids, phytosterols, etc., and their development as functional foods, cosmetics, and feed additives had potential comprehensive utilization value.
    Determination of prohibited pesticide residues in white peony by liquid chromatography-tandem mass spectrometry
    LUO Fa-mei, MAO Jing-chun, HUANG Ying-rui, ZHOU Qin, HE Xi, CHENG Long
    2023, 62(7):  130-136.  doi:10.14088/j.cnki.issn0439-8114.2023.07.023
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    A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was established for the simultaneous determination of 29 prohibited pesticide residues in the white peony. The white peony powder sample was soaked overnight in acetonitrile and extracted by ultrasound. The solid phase extraction column was used for purification, and 29 prohibited pesticide residues were analyzed by LC-MS/MS positive ion mode scanning. The results showed that the linear correlation coefficient of 29 prohibited pesticides was good (R2>0.995 1), with a detection limit of 0.000 1~0.030 0 mg/kg and a quantitative limit of 0.000 3~0.090 0 mg/kg; at the spiked level of 0.01~0.50 mg/kg, the recovery rates of 29 prohibited pesticides were 66.8%~108.4%, and the relative standard deviation (n=6) was 0.9%~12.3%. This method had been successfully applied to the qualitative and quantitative analysis of 29 prohibited pesticides in the quality control samples of the white peony. The qualitative accuracy was accurate, and the quantitative results were within the uncertainty range of the quality control certificate. It was suitable for the residual analysis of 29 prohibited pesticides in the white peony.
    Analysis of aroma volatiles in flowers of four camellia varieties
    YANG Min, XIE Yan-feng, XU Lin, XIANG Cong-lin, FU Shao, CHEN Bao-lin, WEI Ming, CHEN Xiao-gui, LI Qing-yuan
    2023, 62(7):  137-142.  doi:10.14088/j.cnki.issn0439-8114.2023.07.024
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    Four fragrant camellia varieties, namely C37 (Camellia japonica C37), Sweet Emily Kate (Camellia japonica Sweet Emily Kate), Hime (Camellia lutchuensis Hime), and Liexiang (Camellia japonica Liexiang), were used as materials to analyze the volatiles components and relative content of the flowers of these four camellia varieties during their blooming period using headspace solid-phase microextraction gas chromatography (SPME/GC-MS) technology. The results showed that aroma volatiles compounds were detected in C37, Sweet Emily Kate, Hime, and Liexiang, with 27, 10, 19, and 27 types, mainly including alcohols, esters, aldehydes, aromatic compounds, phenols, ethers, terpenoids, ketones, alkanes, and fatty acids. N-hexanol, Benzaldehyde, Benzyl alcohol, Phenylacetaldehyde, Methyl benzoate, Phenethyl alcohol, Naphthalene, and Methyl salicylate were the main volatiles components of the four camellia varieties. These compounds accounted for 86.84%, 90.32%, 93.81%, and 82.20% of the total volatiles content of C37, Sweet Emily Kate, Hime, and Liexiang, respectively. Benzene ring compounds were the main floral components. The relative content of Methyl benzoate in C37 and Hime was the highest, 39.37% and 42.00%, respectively; the relative content of Phenethyl alcohol (31.60%) in Liexiang was the highest; N-hexanol (70.22%) was the main volatiles compound of Sweet Emily Kate.The relative content of esters and alcohols in the flowers of four camellia varieties was much higher than that of other compounds, making them the main volatiles of camellia.
    Information Engineering
    Biomass estimation of artificial Robinia pseudoacacia forest in Yellow River Delta based on multi-source remote sensing data
    WANG Yi-cong
    2023, 62(7):  143-148.  doi:10.14088/j.cnki.issn0439-8114.2023.07.025
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    Using sentinel images, digital terrain data and forest field quadrat survey data, K-nearest neighbor (KNN) model, random forest (RF) model, extreme gradient enhancement (XGBboost) model and Stacking model were constructed respectively to estimate the biomass of artificial Robbin pseudoacacia forest in Yellow River Delta. The results showed that the integrated learning Stacking model significantly improved the accuracy of biomass estimation compared with K-nearest neighbor model, random forest model, and extreme gradient enhancement model (R2=0.61, RMSE=13.42 t/hm2).
    Multi-scenario simulation of ecosystem service value in Zhijiang City based on land use change
    XU Xue-xian, LI Kai-xi, PENG Yu-ling, ZHOU Peng
    2023, 62(7):  149-156.  doi:10.14088/j.cnki.issn0439-8114.2023.07.026
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    Taking Zhijiang City as the research area and the remote sensing image data of Zhijiang City in 2000, 2010 and 2020 was collected. ENVI and ArcGIS software, with the help of land use transfer matrix methods, land use dynamic index, equivalent factor method of ecosystem service value and the contribution rate of the ecosystem service value, were used to analyse the temporal and spatial evolution of land use and the characteristics of the temporal and spatial differentiation of the ecosystem service value. The MCE-CA-Markov model was used to predict the change trends of the land use and ecosystem service value (ESV) of Zhijiang City under three scenarios in 2030. The results showed that: ①The land use in Zhijiang City significantly changed from 2000 to 2020, and the area of the construction land expanded rapidly, mainly due to the transfer of cultivated land. The comprehensive dynamic degree of land use was relatively high, and the construction land and wetlands in a single dynamic degree were as high as roughly 10%/a. ②The hydrological adjustment was the highest amongst the ecological contribution rate of the single ecological service. The ecological contribution rate of the water area was the largest amongst the various types of the land use, which had the most significant impact on ESV changes. ③The spatial differentiation of ESV was significant. The ESV in the south of the Yangtze River was higher than that in the north. Overall, the ecosystem service value of Zhijiang City showed a decreasing trend during the whole study period. ④A loss of ESV in 2030 would transpire under natural development and cultivated land protection scenarios, and the land loss from the cultivated land to the construction land was the key to reduce ESV. Under the ecological protection scenario, ESV increased by 7% compared with that in 2020, thus curbing the decreasing trend effectively.
    Biological Engineering
    Construction of Cymbidium sinense AP3 gene overexpression vector and genetic transformation of Dendrobium officinale
    HE Ling, SUN Bo, WANG Yi-qin, ZANG Rui, CHEN Yu, HE Feng-mei, ZHU Yong-ping
    2023, 62(7):  157-162.  doi:10.14088/j.cnki.issn0439-8114.2023.07.027
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    In order to explore the function of the Cymbidium sinense AP3 gene in the orchid lip, based on the AP3 gene sequence obtained from the Cymbidium sinense transcriptome in the earlier stage, the overexpression vector of the Cymbidium sinense AP3 gene through PCR technology was constructed, and the protocorm of Dendrobium officinale was transformed using Agrobacterium EHA105 to establish a genetic transformation system. After PCR verification, 9 out of 20 resistant seedlings were found to be positive, with a positive seedling rate of 45%. The Cymbidium sinense AP3 gene was successfully introduced into Dendrobium officinale.
    Establishment and application of real-time fluorescence quantitative PCR detection technology for cherry virus A
    LIU Huan, LIU Ge, LI Rui
    2023, 62(7):  163-169.  doi:10.14088/j.cnki.issn0439-8114.2023.07.028
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    Three pairs of detection primers were designed in the conserved region of cherry virus A (CVA) mp gene. After specific screening, primers were obtained that could be used for virus quantitative research. Preparation of plasmid standards, and establishment of standard curves were conducted the sensitivity and specificity of this method, were verified and it is applied to the quantitative detection of CVA in field fruit tree samples. One pair of primers with high detection efficiency and strong specificity (CVA-dF2, CVA-dR2) was successfully screened, and a real-time reverse transcription fluorescence quantitative PCR method for detecting CVA was established based on SYBR Green I fluorescent dye. This method had good repeatability and high sensitivity. It could accurately detect the target viral load without the help of internal reference genes. The slope of the absolute quantitative standard curve was -3.574 6, the coefficient of determination R2 was 0.998 6, and the amplification efficiency was 0.904 4, which was 10 times higher than the sensitivity of conventional RT-PCR detection.The establishment of this method provided a powerful tool for quantitative research on CVA, which could be used for batch detection of CVA in fruit trees or detection of low abundance virus samples.
    Economy & Management
    Research on the transmission mechanism of environmental regulation on industrial structure upgrading
    HUANG Shan-shan, LUO Xiao-juan, WANG Jin
    2023, 62(7):  170-176.  doi:10.14088/j.cnki.issn0439-8114.2023.07.029
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    Based on the panel data of 30 provinces (municipalities and autonomous regions) in China except Tibet, Hong Kong, Macao and Taiwan from 2006 to 2019, the mediation effect model and Sobel test method were used to study the influence path of domestic environmental regulations on industrial structure upgrading and the mediation effect of each path. The results showed that China's environmental regulation had a significant positive direct effect on industrial structure upgrading; environmental regulation could promote the upgrading of China's industrial structure through technological innovation and consumption structure, and their effects were 84.0% and 43.0%, respectively; environmental regulation inhibited industrial structure upgrading through the paths of international trade and foreign investment, with the effects of 13.0% and 4.0%, respectively.
    Empirical study on the efficiency of technological innovation of agricultural listed companies
    LU Zhi-juan
    2023, 62(7):  177-181.  doi:10.14088/j.cnki.issn0439-8114.2023.07.030
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    Three hundred listed companies were selected to evaluate and analyze their technological innovation ability and influencing factors with the help of DEA-BCC model and Malmquist index. The results indicated that the overall level of technological innovation efficiency of agricultural listed companies was relatively low, and the comprehensive efficiency (35.2%), pure technical efficiency (55.2%), and annual decline of foreign-funded enterprises were slightly higher than those of private enterprises and state-owned enterprises. From 2018 to 2020, the Malmquist index of listed agricultural companies decreased by 28.37%, most of them were in the middle and low end of the value chain, and the level of technical efficiency had decreased. Moreover, the equity institutions, profitability and government subsidies of the companies passed the significance test of 10%, 5% and 1%, respectively, which were positively correlated with the efficiency of technological innovation. Agricultural listed companies should make reasonable use of innovation resources under their actual operation conditions, strive to improve their own business level and technological transformation ability, increase investment in technological innovation, and enhance their competitiveness.
    Study on the space-time effect of construction in beautiful Hubei
    LI Xiao-ling, WEN Yan-ping, JIANG Yu-xiang
    2023, 62(7):  182-189.  doi:10.14088/j.cnki.issn0439-8114.2023.07.031
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    Based on the beautiful Hubei index system constructed by 17 indexes of 17 cities and prefectures in Hubei Province from 2014 to 2018, the temporal and spatial evolution law of beautiful Hubei construction was analyzed. The entropy method was used to determine the weight of each index, the time change of the value of each city and prefectures was analyzed, and then the construction level of beautiful Hubei in each city and prefectures was classified by using the natural discontinuous point method. The results showed that on the time scale, all kinds of indices in each city and prefectures had been improved, and the minimum value was raised faster than the highest value. On the spatial scale, the grading standard of the beautiful Hubei index had been significantly improved, and the construction level of beautiful Hubei in various regions had an obvious trend towards the third level. Finally, according to the conclusion of the study, some suggestions from the government, enterprises and individuals were put forward to further build beautiful Hubei.
    Research on the coupling coordination and spatial spillover effect of tourism industry-population urbanization-regional economy in the Yellow River Basin
    WU Xiao-yang
    2023, 62(7):  190-196.  doi:10.14088/j.cnki.issn0439-8114.2023.07.032
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    Based on the coupling coordination degree model, spatial autocorrelation model and panel data spatial Durbin model, the coupling coordination level and spatial-temporal differentiation pattern of tourism industry, population urbanization and regional economy were analyzed in the nine provinces(regions) of the Yellow River Basin from 2005 to 2019. The results showed that from 2005 to 2019, the comprehensive development level of the tourism industry, population urbanization and regional economy systems in the Yellow River Basin had been improving gradually, and the coupling coordination degree showed a fluctuating growth trend; there was a spatial positive correlation between the three system coupling coordination degrees, among which Gansu Province and Henan Province showed a “low-low” and “high-high” agglomeration mode, respectively. The results of spatial Durbin model showed that the subsystem of regional economy and urbanization presented a significant positive spillover effect, and the positive impacts of neighboring provinces were greater than those within the province. Based on this, corresponding suggestions were put forward to promote the formation of a systematic, comprehensive and coordinated overall development pattern in the Yellow River Basin.
    Analysis of the eco-efficiency evaluation and driving factors of grain production in Shandong Province:Based on the dual perspective of non-point source pollution and carbon emission
    ZHU Meng-fan, LI Jing-suo
    2023, 62(7):  197-205.  doi:10.14088/j.cnki.issn0439-8114.2023.07.033
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    The SBM-Undesirable model based on non-expected output was used to measure and evaluate the eco-efficiency of grain production in 16 cities in Shandong Province from 2000 to 2019. ArcGIS visualization technology and Moran index were used to explore the characteristics of its spatial pattern, and a Tobit model was constructed to analyze its driving factors. The results showed that the eco-efficiency of grain production in Shandong Province showed a fluctuating upward trend, with an annual average value of 0.58, and there was still much room for improvement. Spatially, there were obvious differences, the areas with a high level of eco-efficiency of grain production had gradually shifted to the northwest and southwest of Shandong Province; except for 2002, 2006 and 2008, there was a significant positive spatial correlation, and the overall trend was “H-H”and “L-L”agglomeration. The level of financial support for agriculture, the income level of rural residents and the cropping structure had significant driving effects on the eco-efficiency of grain production in Shandong Province, and there were spillover effects on the eco-efficiency of grain production between different regions.
    Research on the trend, characteristics and improvement of agricultural science and technology progress in Hubei Province
    CHEN Wen-hui, WANG Chang-jun, GU Yan, WANG Zhen
    2023, 62(7):  206-212.  doi:10.14088/j.cnki.issn0439-8114.2023.07.034
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    In order to scientifically understand the role of scientific and technological progress in the development of agricultural economy, taking Hubei Province as an example, based on Solow growth model and regression analysis method, the contribution rate of agricultural scientific and technological progress in Hubei Province in 2021 was calculated and analyzed, and the contribution rate of agricultural scientific and technological progress in Hubei Province in 2022 and 2023 was predicted. The results showed that the contribution rate of agricultural scientific and technological progress in Hubei Province continued to maintain an upward trend, showing the development characteristics of a large horizontal gap in the contribution rate of agricultural scientific and technological progress, a downward trend in the marginal return of agricultural material input, and a negative growth in the contribution rate of labor and land factors. In order to promote the contribution rate of agricultural science and technology progress to continue to grow steadily, countermeasures and suggestions were put forward from five aspects: Agricultural science and technology transformation input, agricultural science and technology resource allocation, talent team construction, agricultural technology extension system and industrial science and technology integration.
    The research on farmers' credit, development potential and relative poverty elimination in post-poverty era: Based on the analysis of the survey data in four northwestern provinces
    LIU Fang, XIE Hong-miao
    2023, 62(7):  213-221.  doi:10.14088/j.cnki.issn0439-8114.2023.07.035
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    Based on the 1 957 rural families' survey data from poverty-stricken areas of four northwest provinces including Ningxia, Qinghai, Gansu and Shaanxi in 2019 and 2020, using the method of propensity score matching(PSM) and “A-F” multi-dimensional poverty index, an empirical analysis of the relationship of farmers'credit, development potential and multidimensional poverty was made. The results showed that farmers' credit could effectively restrain farmers' multi-dimensional poverty, and its effect was more obvious for high-potential farmers than ordinary farmers. Credit had different effects on different types of poverty. It could obviously improve income poverty and living condition poverty, and alleviate health poverty to a certain extent, but it had no significant effect on education poverty, asset poverty and opportunity poverty. To strengthen and consolidate the effect of credit poverty alleviation, it must pay attention to the cultivation of the development ability of poor farmers and poor areas, enhance the management ability and development potential of farmers, and consolidate the effect of credit poverty alleviation.
    Evaluation and analysis of influencing factors on the livelihood stability of poverty alleviation farmers from the perspective of sustainable livelihoods
    ZHANG Fei-yun, CHANG Wen-jie
    2023, 62(7):  222-228.  doi:10.14088/j.cnki.issn0439-8114.2023.07.036
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    Taking J township in Shanxi Province as an example, an evaluation index system for the livelihood stability of poverty alleviation farmers was constructed through questionnaire surveys and the theory of sustainable livelihoods, the stability of the livelihoods of poverty alleviation farmers in J township was evaluated, and the influencing factors of the livelihoods stability of poverty alleviation farmers were analyzed. The results showed that the poverty alleviation farmers in J township in a very stable, stable, relatively stable, and unstable state accounted for 1.91%, 23.45%, 55.02%, and 19.62% of the total sample, respectively. The livelihood stability of the poverty alleviation farmers was generally good, only about one-fifth of the poverty alleviation farmers were in a state of poor livelihood stability. Through the analysis of the factors affecting the livelihood stability of the poverty alleviation farmers, it was found that human capital, social capital and material capital had the greatest impact on the livelihood stability of the poverty alleviation farmers. In terms of specific indicators, the status of farmers' skills training, whether they joined economic organizations, and energy use were the leading factors affecting the stability of the livelihoods of poverty alleviation farmers.
    Research on the influencing factors of new farmers' rural e-commerce entrepreneurship based on SEM
    GUO Tian-tian, WANG Hui
    2023, 62(7):  229-234.  doi:10.14088/j.cnki.issn0439-8114.2023.07.037
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    Under the background of rural revitalization, taking 321 questionnaires as samples, starting from the characteristics of new farmers, seven variables of infrastructure, policy support, community role, talent reserve, consumer trust, cognitive level and entrepreneurial behavior were selected through investigation, and the structural equation model (SEM) of new farmers' rural e-commerce entrepreneurship was constructed. The results showed that infrastructure, policy support, community role, talent reserve, consumer trust and cognitive level all had a positive impact on the rural e-commerce entrepreneurial behavior of new farmers at a significant level. Through the analysis of the established behavioral path, suggestions were proposed to improve the rural supply chain system, carry out a variety of e-commerce skills training, and cultivate and support new farmers in rural e-commerce, which had certain practical significance for improving the rural e-commerce entrepreneurship of new farmers.
    Research on the transformation and upgrading of the circulation system of intelligent agriculture value-added tea industry
    JI Xin-mei, LI Jiao, GUO Yu-jie
    2023, 62(7):  235-239.  doi:10.14088/j.cnki.issn0439-8114.2023.07.038
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    Based on the strategy of promoting agriculture through quality proposed by the 20th National Congress of the Communist Party of China and the rise of the wave of intelligent agriculture, taking the transformation of the traditional tea industry circulation model and the promotion of the transformation and upgrading of China's tea industry circulation as the goals, intelligent agricultural technologies such as artificial intelligence, the Internet of Things, digital economy, and decentralization were integrated into various links of tea production, supply, retail, and quality supervision, respectively, to create a new tea industry development model that valued the transformation and upgrading of the tea industry circulation system with intelligent agricultural technology.
    Research on short video content marketing for agricultural products based on SICAS model
    LIU Huan-yi, XIU Jian-xin, NIU Shan-bin, CHEN Xiao-feng
    2023, 62(7):  240-246.  doi:10.14088/j.cnki.issn0439-8114.2023.07.039
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    Short video content marketing of agricultural products has more prominent advantages than traditional agricultural marketing in terms of duration, content, interactive participation and emotional mobilization, but many problems have been exposed during the practice of combining. The article aimed to provide reference for improving short video content marketing for agricultural products, insisted on content as the core and customer-oriented strategy, and proposed five levels of short video content marketing strategy for agricultural products with reference to SICAS model, that was building a demand perception network with wide coverage and fast response; enriching the production channels of agricultural products short video heterogeneous content; determining the differentiated positioning based on platform characteristics, and relying on platform channels to connect with users; expanding sales channels based on platform selection, and optimizing shopping experience; actively guiding users to share their experience,and doing a good job of word-of-mouth marketing.
    Rural Revitalization
    Research on the promotion path of county innovation ability based on the practice in Hubei Province from the perspective of rural revitalization
    XIAO Song, YU Xiang, MEN Yu-ying, ZOU Xiao-wei, WANG Ya
    2023, 62(7):  247-252.  doi:10.14088/j.cnki.issn0439-8114.2023.07.040
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    In order to explore the impact mechanism of improving the innovation capability of county regions in the process of comprehensively promoting the rural revitalization strategy in the new era, taking 62 counties(cities) in Hubei Province as the research sample, the fuzzy set qualitative comparative analysis method (fsQCA) was used to select five condition variables of market, economy, industrial structure, talent and policy, and in-depth analysis from the perspective of configuration was conducted. The results showed that a single condition variable could not directly improve regional innovation ability, but needed to be synergistic through configuration. There were five paths to improve regional innovation capability, which could be summarized into four models, namely market-oriented, dual-driven economy and industrial structure, comprehensive development, and government input and industrial structure promotion. The economy, market and industrial structure were the core variables for the improvement of regional innovation capabilities, of which the industrial structure was the most important.
    Social enterprises promote rural revitalization: Value logic, typical practice and legal guarantee
    ZHANG Li-li, HUANG Yu-qi
    2023, 62(7):  253-257.  doi:10.14088/j.cnki.issn0439-8114.2023.07.041
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    As an emerging business model, social enterprises can drive rural revitalization through commercial channels in both economic benefits and social benefits. Rural revitalization driven by social enterprises has been practiced overseas, among which Japanese integrated agricultural association model and French agricultural cooperative model have certain enlightenments for the development of rural social enterprises in China. At present, Chinese social enterprises still face problems such as unclear legal positioning, blind spots and deficiencies in legal supervision, and the poor policy support system. Relevant departments should select reasonable policy tools based on the actual national conditions to determine the legal positioning of social enterprises, improve the content of legal supervision, and optimize the policy support system, so as to provide a legal system guarantee for social enterprises to promote rural revitalization.