35%氟唑磺隆WDG对春小麦田一年生杂草防除效果及安全性评价

Efficacy of 35% Flucarbazone WDG in Controlling Annual Weeds in the Spring Wheat Field and its Safety Assessment

为明确35%氟唑磺隆WDG防除春小麦田杂草效果及对小麦的安全性,设35%氟唑磺隆WDG制剂量90、105、120、210m L/hm^2不同处理对水300 L/hm^2,于春小麦3~5叶期均匀喷施。结果表明,35%氟唑磺隆WDG使用量105 m L/hm^2以上,对春小麦田禾本科杂草株防效可达到81.19%以上,鲜质量防效可达到90.07%以上,小麦安全且产量增加。

In order to determine the efficacy of 35%Flucarbazone WDG in preventing and controlling weeds in spring wheat fields and assess its safety,35%Flucarbazone WDG was applied at the rates of 90,105,120,and 210 m L/hm^2,each mixed with 300 L/hm^2 water,in different treatments,which was sprayed evenly onto weeds and wheat plants in the spring wheat field at the three-five leaf stage.The results showed that when 35%Flucarbazone WDG was applied at the rate of 105 m L/hm^2 or higher,it achieved the weed-number based efficacy of 81.19%in controlling the weeds of gramineae in the spring wheat field,and the corresponding control efficacy based on the fresh weight of weeds reached 90.07%.Moreover,this agent was found to be safe for wheat,and the yield of wheat increased with its application.This research provides the data supporting the application and later promotion of the agent in wheat fields and has practical application value.