棉铃虫是危害棉花生长的主要害虫,九十年代以来连续几度暴发。由于棉铃虫抗药性逐年增加,防效下降,严重影响了棉花产量,对许多棉农植棉积极性有较大的影响。为有效地控制棉铃虫的猖獗危害。1997年我们选择了几种最近开发研制的新农药,于四代棉铃虫发生期间,按照推荐剂量,进行了室内测定和田间小区试验,取得了较理想的 Cotton bollworm is a major pest that endangers the growth of cotton and has been outbreaks for several consecutive times since the 1990s. As the resistance of cotton bollworm increased year by year, the fall of the control effect seriously affected the yield of cotton and had a great impact on the enthusiasm of many cotton-planting cotton-planting. In order to effectively control the rampant damage of cotton bollworm. In 1997 we selected several recently developed new pesticides, in the fourth generation of cotton bollworm occurred in accordance with the recommended dose, conducted indoor determination and field plot test, and achieved a more satisfactory