Influences of Diplachne fusca （L.） Beauv. on growth and yield traits of rice and its eco-economic threshold

doi:10.14088/j.cnki.issn0439-8114.2022.06.013

Abstract

Abstract: To determine the damage characteristics of sprangletop[Diplachne fusca（L.） Beauv.] on paddy rice, the influence of sprangletop sensitive or resistant populations on the growth and development of rice was measured with weed-crop competition experiment. The results showed that Diplachne fuscahad a significant inhibitory effect on the growth of rice, and the number of tillers decreased with the increase of Diplachne fusca density, and the longer the time, the greater the effect was. The rice spike length, effective spike number, seed rate, 1 000 grain weight and yield decreased with the increase of Diplachne fusca density. The relationship between sensitive population density and effective spike number was better fitted by exponential function model, and the quadratic curve was better model on resistant population. The quadratic curve model was better described between the two populations and spike length, seed rate, 1 000 grain weight and yield, respectively. The power function model was better to describe the loss of rice yield caused by Diplachne fusca, in while y = 2.091 7x^{0.607 0} for sensitive population and y = 2.238 7x^{0.562 5} for resistant population. When 10% metamifop emulsifiable concentrate was applied to control sensitive and resistant populations of Diplachne fusca at the same weeding cost in paddy field, the economic infestation levels （EIL） were 2.24%~2.91% and 2.63%~3.42%, respectively. The eco-economic threshold （1.12~1.72 plants/m²） of sensitivity was lower than that （1.33~2.13 plants/m²） of resistant population.

Key words: Diplachne fusca （L.） Beauv., sensitivity population, resistant population, paddy rice, yield traits, eco-economic threshold

CLC Number:

S451
S511

YUAN Shu-zhong, CHEN Yong-rui, XIA Zhi-ming, CAI Jing-xuan, CHEN Yue-yang, DENG Wei. Influences of Diplachne fusca （L.） Beauv. on growth and yield traits of rice and its eco-economic threshold[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(6): 69-75.

References

[1] 李扬汉. 中国杂草志[M].北京:中国农业出版社,1998.1213-1214.
[2] WU Z Y,RAVEN P H,HONG D Y.Raven co-chairs of the editorial committee. Flora of China, Poaceae[M].Beijing:Science press,2006.469.
[3] 张玉江,张汉友.冀东滨海盐碱地稻区双稃草的发生、识别与防除[J].北方水稻,2016,46(5):36-37.
[4] 田志慧,王依明,吴雪源,等.双稃草——上海稻田的一种新优势杂草[J].上海农业学报,2017,33(4):55-57.
[5] YUAN S Z,DI Y J,CHEN Y Y,et al.Target-site resistance to cyhalofop-butyl in bearded sprangletop(Diplachne fusca) from China[J].Weed science,2019,67(5):534-538.
[6] 朱文达. 稗对水稻生长和产量性状的影响及其经济阈值[J].植物保护学报,2005,32(1):81-86.
[7] 张纪利,吴尚,石绪根,等.稗草对双季稻生长的影响及其防除经济阈值研究[J].草业学报,2015,24(8):44-52.
[8] 董立尧,沈晋良,高同春,等.水直播稻田千金子的生态经济阈值及其防除临界期[J].南京农业大学学报,2003,26(3): 41-45.
[9] 吴尚,张纪利,李保同,等.千金子对水稻生长的影响及其经济阈值[J].中国农业科学,2015,48(3):469-478.
[10] 朱文达,周普国,何燕红,等.千金子对水稻生长和产量性状的影响及其防治经济阈值[J].南方农业学报,2018(49):863-869.
[11] 高柱平,李孙荣.夏花生田马唐的生态经济阈值、生态经济除草阈值模型的研究[J].植物保护学报,1989,16(2):139-143.
[12] KAUR S,KAUR R,CHAUHAN B S.Understanding crop-weed-fertilizer-water interactions and their implications for weed management in agricultural systems[J].Crop protection,2018,103:65-72.
[13] VILA-AIUB M M,NEVE P,POWLES S B. Evidence for an ecological cost of enhanced herbicide metabolism in Lolium rigidum[J].Journal of ecology,2009,97:772-780.
[14] 杜龙. 基于菵草ACCase等位基因突变的适合度代价研究[D].山东泰安:山东农业大学,2016.
[15] GHANIZADEH H,HARRINGTON K C.Ecological evidence for the fitness trade-off in triazine resistant Chenopodium album L.: Can we exploit the cost of resistance?[J]. Agronomy,2019,9:523.
[16] 喻大昭,魏守辉,朱文达,等.空心莲子草对水稻生长的影响及其经济阈值[J].植物保护学报,2008,35(1):69-73.
[17] 崔娟,董莉环,史树森.稗草对大豆生长的影响及其经济阈值[A].植保科技创新与农业精准扶贫——中国植物保护学会2016年学术年会论文集[C],成都,2016.492.
[18] 李婷,宋爱颖,张世杰.麦田早熟禾生态经济阈值初探[J].杂草科学,2011,29(4):42-43,57.