甘蓝小菜蛾常用单剂及甲维盐混剂药效试验研究

进行了甘蓝小菜蛾杀虫剂的田间药效试验,结果表明:2种甲维盐混剂2.8%甲维盐.三氟氯氰菊酯微乳剂和55.8%甲维盐.毒死蜱乳油药后10 d防效分别为:87.30%、91.24%;4个单剂40%毒死蜱乳油、0.5%甲维盐微乳剂、25 g/L高效氯氟氰菊酯乳油、0.5%甲氨基阿维菌素苯甲酸盐乳油药后10 d防效分别为:80.18%、85.60%、82.90%、81.76%。可见4个单剂对甘蓝小菜蛾防效和持效效果相当,甲维盐混合剂总体防效和持效好于单剂。

Efficacy Trial of Single Dose and Emamectin Mixture Against Cabbage Moth

The field efficacy trial about several insecticides against cabbage moth was studied.The results showed that control effect of 2.8% emamectin+Lambda-cyhalothrin emulsion and 55.8% of emamectin+Chlorpyrifos was 87.30%,91.24% 10 days after treating;the control effect of 40% chlogpyrifos EC,0.5% emamectin micro-emulsion,25 g/L lambda-cyhalothrin EC,0.5% emamectin benzoate emulsion was 80.18%,85.60%,82.90%,81.76% 10 days after treating.It indicated that the control effect and persitence of 4 single dose against...