敌敌畏·除虫菊提取液混配对中华微蛾的增效作用

Synergistic Effects on Sinopticula sinica Yang of the Mixture of Dichlorvos and Extract of Pyrethrum

[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 research aimed to screening the best ratio of dichlorvos and extract of pyrethrum,and to provide references for the control of Sinopticula sinica Yang.[Method]The toxicological effects of dichlorvos and extract of pyrethrum on S.sinica Yang were determined using sensitive layer method under laboratory conditions.[Result]The results showed that all treatments of dichlorvos combined with extract of pyrethrum had different synerghism,and the synergism was most significant when the proportion of dichlorvos to extract of pyrethrum was 1∶3,and the CTC was 307.74.[Conclusion]This study showed that it was reasonable to treat S.sinica Yang with the mixture of dichlorvos and extract of pyrethrum.