不同除草剂防除小麦田杂草使用技术探讨
2021-04-20范美娟朱慧沈晴
范美娟 朱慧 沈晴



摘要:55%吡酰·异丙隆悬浮剂(SC)在小麦播后苗前使用,对杂草有较好的封闭效果,对小麦安全。2019年秋播期间,在天气干旱的情况下,单用55%吡酰·异丙隆悬浮剂 1次封闭,无法控制小麦全生育期杂草危害;但是,如果先封闭处理再在春季茎叶处理,除草效果则显著上升。4月上旬调查显示,55%吡酰·异丙隆悬浮剂1次封闭处理对单子叶草的株防效和鲜重防效分别为56.91%和74.05%;55%吡酰·异丙隆SC封闭处理结合5%唑啉草酯乳油茎叶处理的防效分别为79.57%和89.93%,与大面积生产中使用的除草剂2次处理防效相当。
关键词:除草剂;小麦田;杂草;防除技术
中图分类号:S451.22+1 文献标志码:A 文章编号:1003-935X(2021)04-0056-05
Application Technology of Different Herbicides for Weed Control in Wheat Field
FAN Mei-juan1,ZHU Hui1,SHEN Qing2
(1.Zhangjiagang Station of Plant Protection and Plant Quarantine,Zhangjiagang 215600,China;
2.Suzhou Station of Plant Protection and Plant Quarantine,Suzhou 215000,China)
Abstract:Diflufenican·isoproturon 55% SC effectively controlled weeds and was selectivity to wheat when applied after sowing and before crop seedling emergence. The formulated mixture applied alone once in pre-emergence did not provide season-long control under the drought condition during autumn sowing in 2019. But weed control efficacy increased significantly when diflufenican·isoproturon 55% SC in pre-emergence was supplemented by a foliar treatment in spring. In the first ten days of April,monocotyledonous-weed control based on plant density and fresh weight provided by diflufenican·isoproturon 55% SC applied once in pre-emeergence was 56.9% and 74.05%,respectively. When the pre-emergence treatment was supplemented by a foliar application of pinoxaden 5% EC control increase to 79.57% and 89.93%,respectively,which was equivalent to the control obtained with herbicided used in large-scale production.
Key words:herbicide;wheat fields;weed;control technology
收稿日期:2021-04-20
基金项目:江苏省苏州市农业科技创新项目(编号:SNG2018101)。
作者简介:范美娟(1968—),女,江苏张家港人,高级农艺师,从事农作物病虫草害的监测与推广工作。E-mail:987836989@qq.com。
通信作者:沈 晴,硕士,高级农艺师,从事农作物病虫害预测预报和绿色防控工作。E-mail:99253027@qq.com。
小麦是江苏省张家港市的重要粮食作物之一,2019年种植面积16.09万亩(1亩≈667 m2),以扬麦16号和镇麦12号为主。长期以来,小麦生产一直偏重追求产量,随着生活水平提高,人们对小麦面粉制品的品质要求也逐年提高[1-4],小麦生产在保证粮食安全中起着至关重要的作用,但是近年来麦田杂草蔓延迅速,严重影响了小麦的生长,加强麦田杂草防治已成为提高小麦产量和品质的重要方面[5-7]。江苏省张家港市麦田杂草发生普遍,表现出自然出草量大、密度高、出草时间长、危害重等特点。……
