42%吡氟酰草胺悬浮剂对春小麦田一年生阔叶杂草防除效果研究  

Study on the Control Effect of 42%Diflufenican Suspension Concentrate on Annual Broad-leaved Weeds in Spring Wheat Field

作　　者：蔡青 翁华[2] CAI Qing;WENG Hua(Qinghai University,Xining Qinghai 810016,China;Academy of Agricultural and Forestry Sciences,Qinghai University,Xining Qinghai 810016,China)

机构地区：[1]青海大学,青海西宁810016 [2]青海大学农林科学院,青海西宁810016

出　　处：《青海农林科技》2023年第3期84-87,共4页Science and Technology of Qinghai Agriculture and Forestry

基　　金：国家科技基础资源调查(2022FY101600);青海省科技项目(2023-NK-P38)。

摘　　要：为明确42%吡氟酰草胺悬浮剂对春小麦田一年生阔叶杂草防除效果及对春小麦的安全性,本研究采用茎叶喷雾法进行田间药效试验。结果表明,42%吡氟酰草胺悬浮剂使用量为283.50 g a.i./hm^(2)时,药后20 d对杂草株防效为74.13%;药后40 d对杂草株防效为80.24%,鲜重防效为88.33%,对主要杂草密花香薷、野油菜、荞麦蔓鲜重防效达80%以上,对春小麦安全。In order to clarify the control effect of 42%diflufenican suspension concentrate(SC)on annual broad-leaved weeds in spring wheat field and its safety to spring wheat,the field efficacy test was carried out by spraying the stems and leaves.The results showed that at the dosage of 283.50 g a.i./hm^(2),the 42%diflufenican SC had a control effect of 74.13%on weed plants after 20 days;After 40 days of treatment,the control effect on weed plants was 80.24%,and the fresh weight control effect was 88.33%.and the control effect on fresh weight of Elsholtzia densa,Brassica juncea and Polygonum convolvlus was more than 80%,which was safe to spring wheat.

关 键 词：42%吡氟酰草胺悬浮剂 春小麦 防除效果 安全性 

分 类 号：S451.221[农业科学—植物保护]