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[目的]筛选敌敌畏与除虫菊提取液混配的最佳配比,从而为中华微蛾的治理提供依据。[方法]在室内条件下,采用药膜法测定敌敌畏、除虫菊提取液及其混剂对中华微蛾的毒力。[结果]敌敌畏与除虫菊提取液混配的各个配比均有不同程度的增效作用,其中以1∶3的配比混配增效作用最大,对中华微蛾的共毒系数为307.74。[结论]该研究表明敌敌畏、除虫菊提取液的混配用于中华微蛾的治理是合理的。
[Objective] The aim of the study was to screen the best proportion of mixture of dichlorvos and pyrethrum extract to provide basis for the treatment of Chinese moth. [Method] Under laboratory conditions, the toxicity of dichlorvos, pyrethrum extract and their mixture to the Chinese moth was determined by membrane method. [Result] The various proportions of the mixture of dichlorvos and pyrethrum extract had different synergistic effects. Among them, the synergistic effect with the mixture ratio of 1: 3 was the highest, and the synergistic coefficient to dichlorvos was 307.74. [Conclusion] The study showed that the mixture of dichlorvos and pyrethrum extract was reasonable for the treatment of Chinese moth.