大豆玉米带状复合种植田茎叶除草剂的防效及安全性  

Control Effects and Safety of Post-Emergence Herbicides in the Field with Soybean-Maize Intercropping

作　　者：刘磊 黄运友 周乐银 冯正锐 张亚[1] 刘双清[1] LIU Lei;HUANG Yun-you;ZHOU Le-yin;FENG Zheng-rui;ZHANG Ya;LIU Shuang-qing(College of Plant Protection,Hunan Agricultural University,Changsha 410128,PRC;Linxiang Bureau of Agriculture and Rural Affairs,Linxiang 414300,PRC)

机构地区：[1]湖南农业大学植物保护学院,湖南长沙410128 [2]湖南省临湘市农业农村局,湖南临湘414300

出　　处：《湖南农业科学》2024年第5期19-23,共5页Hunan Agricultural Sciences

基　　金：湖南省农业农村厅大豆玉米带状复合种植“揭榜挂帅”领办示范项目(湘财预[2023]157号)。

摘　　要：为探究不同茎叶除草剂对大豆玉米带状间作种植田杂草的防效及对作物的安全性,采用田间小区试验,测定了5种大豆茎叶除草剂和5种玉米茎叶除草剂对杂草的防治效果。结果表明:在施药14 d后,35%精喹·氟磺胺水乳剂和10%乙羧氟草醚乳油对大豆行间杂草的防效较好,株防效分别达到85.61%和84.34%,288 g/L氯氟吡氧乙酸异辛酯乳油和30%硝磺·莠去津可分散油悬浮剂对玉米行间杂草的防效较好,株防效分别达到90.04%和87.34%,且随着时间的推移药害指数逐渐降低,对大豆玉米安全。除草剂处理均增加了大豆和玉米的产量,分别比对照增产11.18%~19.42%和13.11%~25.77%。这4种除草剂在推荐剂量下可有效防除大豆玉米带状间作种植田一年生和多年生杂草,可在生产上推广应用。A field plot experiment was conducted to explore the control effects and safety of five post-emergence herbicides for soybean and five post-emergence herbicides for maize on weeds in the field with soybean-maize intercropping.The results showed that quizalofop-P-ethyl·fomesafen 35%EW and fluoroglycofen 10%EC demonstrated good control effects(85.61%and 84.34%,respectively)on the weeds in soybean rows 14 days after application.The control effects of fluroxypyr-meptyl 288 g/L EC and mesotrione·atrazine 30%OD were 90.04%and 87.34%,respectively,on the weeds in maize rows.Moreover,the phytotoxicity index decreased gradually over time,which indicated that the herbicides were safe for soybean and maize.Compared with the control,the tested herbicides increased the yields of soybean and maize by 11.18%-19.42%and 13.11%-25.77%,respectively.The four herbicides at the recommended doses can control annual and perennial weeds in the field with soybean-maize intercropping and be applied and promoted in production.

关 键 词：大豆玉米带状间作 茎叶除草剂 安全性 防效 

分 类 号：S482.4[农业科学—农药学]