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    Effect of special fertilizer for oilseed rape in Central Hubei Province
    GU He-he, FANG Wen, CHEN Jin, LI Xu-chun, LIAO Shi-peng, YANG Yu-xiong, REN Tao, LU Jian-wei
    HUBEI AGRICULTURAL SCIENCES    2024, 63 (2): 74-78.   DOI: 10.14088/j.cnki.issn0439-8114.2024.02.013
    Abstract270)      PDF (1699KB)(87)       Save
    To clarify the effect of special fertilizers for oilseed rape (Brassica napus L.) on the yield enhancement of direct seeding oilseed rape in central Hubei Province, field experiments for two consecutive years in Shayang County, Hubei Province from 2019 to 2021 were carried out, with four fertilization treatments of no fertilizer, conventional fertilizer, Yishizhuang special fertilizer and Yangfeng special fertilizer, and the differences of the yield, aboveground biomass, aboveground nutrient content, aboveground nutrient accumulation and fertilizer partial productivity of oilseed rape at mature stage under four treatments were analyzed. The results showed that compared with no fertilization control, both conventional fertilization and special fertilizer treatments could significantly increase rapeseed yield. Compared with the conventional fertilization, the total nutrient input of the special fertilizer treatments decreased by 41.3%, but there was no significant difference in rapeseed yield between conventional fertilization and special fertilizer treatments. Fertilizer application significantly increased the aboveground biomass of oilseed rape and promoted the absorption of nutrients by the aboveground oilseed rape. The treatment with special fertilizer for oilseed rape significantly improved the partial productivity of fertilizers. Compared with the conventional fertilization treatment, the average fertilizer partial productivity of Yishizhuang special fertilizer treatment and Yangfeng special fertilizer treatment increased by 80.6% and 68.2% respectively in 2019—2020 and 2020—2021. In conclusion, the special fertilizer for oilseed rape improved the utilization rate of fertilizer while ensuring a high and stable yield of oilseed rape.
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    Improving effect of different amendments on coastal saline-alkali soil
    WANG Li-yan, PAN Jie, ZHAO Jie, LI Meng-qi, ZHANG Hui, WANG Chun-shui, DONG Yu-chen, XIAO Hui
    HUBEI AGRICULTURAL SCIENCES    2024, 63 (2): 31-35.   DOI: 10.14088/j.cnki.issn0439-8114.2024.02.006
    Abstract243)      PDF (3094KB)(119)       Save
    In order to study the improvement effect of different amendments on coastal soil, a pot experiment was conducted to study the effects of calcium sulfate, aluminium sulfate, ferric sulfate, ferrous sulfate and sulfur on soil total salt, pH and ion composition. The results showed that with the different amendments applied, the content of ions in the infiltration water varied greatly. In the first leaching, the contents of Na+ and Cl- in the infiltration water treated with calcium sulfate, aluminum sulfate and ferric sulfate were 54.78% and 58.25%, 35.44% and 39.22%, 32.65% and 34.82% higher than those of CK, respectively, indicating that the addition of these three amendments had a better effect on soil salinity reduction, and calcium sulfate treatment had the best effect. In the second leaching, the Na+ content of ferric sulfate, calcium sulfate and aluminum sulfate treatment was 75.14%~347.76% higher than that of CK. Combined with two times of leaching, the results showed that calcium sulfate treatment had a more significant effect on the leaching of Na+ in soil. Compared with CK, the soil pH of each amendment treatment decreased to varying degrees, and the pH decreased by 2.23%~3.84%. Different amendments had different effects on soil ions. The contents of Ca2+ and Mg2+ in soil treated with amendments were higher than those of CK. Considering the effects of different amendments on soil pH, Na+ and Cl-, it was suggested that ferric sulfate and calcium sulfate should be combined to improve coastal saline-alkali land.
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