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自1980年以来,小麦吸浆虫在我市迅速回升,并逐年加重,一般密度由过去的每小方3～9头上升到目前的21～31头,最高密度由过去的每小方110头上升到2492头。1980年全市发生20万亩,1987年增加到44万亩,已成为我市小麦生产中的严重问题。1985～1987年,我们先后用有机磷类农药防治出土前的幼虫和蛹,筛选出了有效的药剂种类和施药方法,经大面积示范推广,取得了较好的防治效果和经济效益。
Since 1980, Midazolam rose rapidly in our city and increased year by year. The average density has risen from 3 to 9 heads per square meter in the past to the present 21 to 31 heads. The highest density has risen from 110 heads per square foot in the past to 2492 head. In 1980, the city took 200,000 mu and increased to 44,000 mu in 1987, which has become a serious problem in the wheat production in our city. From 1985 to 1987, we used organic phosphorus pesticides to prevent and control larvae and pupae before excavated, and we screened out effective pesticide types and application methods. After large area demonstration and popularization, we achieved good control effects and economic benefits.