10%乙羧氟草醚EC对大豆田阔叶杂草的防除效果
2018-06-07李莉朱文达李林李金泉
李莉 朱文达 李林 李金泉



摘要:分析10%乙羧氟草醚EC对大豆田阔叶杂草的防除效果和最佳使用剂量,对其进行了田间药效试验。结果表明,10%乙羧氟草醚EC 300~1 200 mL/hm2处理,药后40 d对大豆田阔叶杂草的株防效达91.49%~99.87%,鲜重防效达95.65%~99.94%,可较好地控制大豆田野苋菜、马齿苋的为害,在杂草3~5叶期使用,用量以600~900 mL/hm2为宜。
关键词:10%乙羧氟草醚EC;大豆;阔叶杂草;防除效果
中图分类号:S565.1;S451.2 文献标识码:A 文章编号:0439-8114(2018)07-0065-04
DOI:10.14088/j.cnki.issn0439-8114.2018.07.015
Studies on Broadleaf Weed Control Effects of Fluoroglycofen-ethyl
10%EC in Soybean Fileds
LI Lia,ZHU Wen-dab,LI Linb,LI Jin-quanc
(a.Institute of Food Crops,Hubei Academy of Agricultural Sciences/Hubei Coarse Cereals Engineering Research Center;b.Institute of Plant Protection,Soil and Fertilizer;c.Institute of Industrial Crops,Hubei Academy of Agricultural Sciences,Wuhan 430064,China)
Abstract: A field experiment was conducted to determine the efficacy of fluoroglycofen-ethyl 10%EC against broadleaf weeds in the soybean field. The results showed that the control efficacy was 91.49%~99.87% at 40 days after post-emergence treatment with fluoroglycofen-ethyl 10%EC at the application rate of 300~1 200 mL/hm2 in the soybean field,and 95.65%~99.94% (based on weed plant fresh weight) at 40 days after treatment. Fluoroglycofen-ethyl 10%EC had relatively good effect to broadleaf weeds in soybean fields and when it was applied during 3~5 leaf stage,the chemical worked well in controlling the weeds of Amaranthus spinosus L. and Portulaca oleracea L., the suitable dosage was 600~900 mL/hm2.
Key words: fluoroglycofen-ethyl 10%EC; soybean; broadleaf weeds; control efficacy
湖北夏大豆一般在5月下旬至6月初(油菜、小麥收获后)适时播种,此时正值高温多雨季节,有利于杂草的发生和生长,若不及时防除会与大豆争肥、争水、争光,影响其生长发育,造成产量和品质下降[1-3]。杂草控制是生产管理的一个重要方面,近年来由于劳动力紧缺,化学除草已经成为豆田除草的主要手段,它改变了人工除草效率低、劳动强度大的状况,在提高工效、降低成本、减轻劳动强度等方面起到了较大的作用,给农业生产带来了诸多优越性,已成为最重要的农业生产资料之一,在未来农业生产中仍将占据重要地位[4-6]。
除草剂的应用在农业生产中的重要性不可否认,随着除草剂的使用日趋普及和常规,除草剂的选择就显得十分重要,要取得理想的除草效果就必须选用适当的除草剂与施药方法[7,8]。乙羧氟草醚(Fluoroglycofen-ethyl)作为新型高效苗后除草剂,具有高效、低毒、低残留、活性高、作用速度快、不影响下茬作物、应用范围广等特点,适用于小麦、大麦、花生、大豆和稻田阔叶杂草的防除[9-13]。
研究表明,大豆对不同类型的除草剂有不同反应,有的除草剂喷施以后会对大豆生长产生一定伤害。……
