去秋明雨天气多，油菜、麦田杂草相比常年生长旺盛。多数地方使用除草剂后都收到了良好的除草效呆，但也有少数麦菜田防效不佳，在喷药后不长时间草枯草又青。究其原因，我们通过调查认为，除了少数用药量不足，药液浓度过低外，主要还有三种情况：一是没有抓住杂草敏感或用药 To the Tyumen rainy weather, rapeseed, wheat weeds compared to annual growth robust. In most places, herbicides have received good herbicidal efficacy, but there are also a few wheat fields that are not very effective in control. They are not green after a long period of spraying. The reason, we through the survey that, in addition to a small number of drug shortage, drug solution concentration is too low, there are three main conditions: First, do not grasp the weed sensitive or medication