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近年来,我乡麦田杂草危害逐年加重,特别是看麦娘危害普遍较重,已成为三麦夺高产的主要障碍。前几年推广麦田化学除草,由于受气象条件影响较大,有的使用时田上湿度较低,除草剂难以发挥药效,有的施药时间过晚,草情大,温度低,防除效果不够理想。因此,给大面积推广麦田化学除草带来了很大困难,为了摸索麦田杂草的防治技术,83年秋播时我们在东
In recent years, the harm of weeds in rural areas of our country has been increasing year by year. In particular, the harm of Ophiopogon japonicus is generally heavier and has become the major obstacle to the high yield of San Mai. A few years ago to promote wheat field chemical weeding, due to the greater impact of weather conditions, and some use when the field humidity is low, herbicides difficult to play a pharmacodynamic effect, and some spraying time too late, the lawn is big, the temperature is low, the control effect is not enough ideal. Therefore, to a large area to promote wheat field chemical weeding has brought great difficulties, in order to explore the wheat weeds prevention and control technology, the autumn of 83 when we are in the East