高效氯氰菊酯与甲胺基阿维菌素苯甲酸盐的联合毒力

Determination of Co-Toxicity of Beta-Cypermethrin and Emamectin Benzoate to Laphygma exigua H. and Plutella xyllostella L.

室内测定了不同配比的高效氯氰菊酯和甲胺基阿维菌素苯甲酸盐对甜菜夜蛾的联合毒力,结果表明,用6%高效氯氰菊酯乳油和3%甲胺基阿维菌素苯甲酸盐乳油按有效成分质量比为9∶1配制的3%高氯·甲维盐乳油对甜菜夜蛾的增效作用最强,其共毒系数达到了141.11;同时,研究了该配比药剂对小菜蛾的联合作用,结果表明,也具有明显的增效作用,其共毒系数达到了138.74。

Laboratory bioassay was conducted to determine the co-toxicity of beta-cypermethrin and emamectin benzoate to Laphygma exigua H.The result showed that,in the two insecticides different proportions,the mixture(beta-cypermethrin-emamectin benzoate=9∶1)had the highest synergistic activity on Laphygma exigua H.(CTC=141.11). The synergistic activity of that mixture(9∶1) was also evaluated to Plutella xyllostella L.The result showed the mixture also had significant synergistic activity on Plutella xyllostella L.(CTC=138.74).