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1、选择最佳施药期:冬季用药,安全高效,多产增收有些农户把麦田使用除草剂的时间选在春季,等到杂草的草龄和密度很大时才施药防治。此时,杂草草龄大,抗药性增强,防治时就必须增加药量,这样既增加了成本,也容易对小麦和后茬及邻近的作物产生药害。因此强烈建议冬前用药,以拜耳公司的世玛为例,最佳施药时间为霜冻前禾本科杂草3~5叶期(普遍出齐苗时)施用,杂草幼小、耐药力差,除草效果高,用药量少、成本低、安全性好。补救用药期大约在2月1日~3月1日,冬后作物返青后拔节前,禾草4~6叶,晴天且用药后3日内田间无霜冻和积水。2、调配好喷雾器:雾化良好的喷雾器,是确保施药质量
1, choose the best application period: winter medication, safe and efficient, prolific yield Some farmers use the herbicide in the wheat field in the spring time, wait until weeds grass age and density before spraying control. At this time, weeds of older age, enhanced resistance, prevention and control must increase the dose, which will not only increase the cost, but also easy to wheat and crop and neighboring crop phytotoxicity. Therefore, it is strongly recommended to take pre-winter medication. Taking Baymar’s Bima as an example, the optimum application time is 3 to 5 leaf stage of pre-frost gramineous weeds (generally when Qi Miao), young weeds and poor resistance , Herbicidal effect is high, less dosage, low cost, good safety. Recovery period of about February 1 ~ March 1, after winter crop reburning before jointing, grasses 4 to 6 leaves, sunny and 3 days after treatment within the field without frost and water. 2, deployment of a good sprayer: atomized sprayer, is to ensure the quality of pesticides