棉叶螨是赣北地区棉花生产上的重要叶面害虫。近年来,防治棉叶螨一直使用三氯杀螨醇,用药品种单一,防治次数增多,剂量不断提高,害螨抗药性明显增强,大多数地方的防治效果下降。鉴此,笔者采用多噻烷可溶性粉剂进行防治棉叶螨的田间药效试验,取得了较好的防治效果。现将试验结果整理如下。 Cotton spider mite is an important foliar pest on cotton production in northern Jiangxi. In recent years, the prevention and treatment of cotton spider mites have been using dicofol, a single drug species, prevention and control increased the number of rising doses of pest mite resistance was significantly enhanced, and most of the local control effect decreased. In view of this, the author used polythiazine soluble powder for the prevention and treatment of cotton spider mite field efficacy test, and achieved good control effect. The test results are summarized below.