2.1%氯·阿乳油防治菜粉蝶试验研究

The Control Effect of 2.1% Cypermethrin-Abamectin EC on Cabbage Butterfly(Pieris rapae L.)

研究了 2 .1%氯·阿乳油对菜粉蝶的室内毒力和田间防效。结果表明 ,2 1%氯·阿乳油在室内对菜粉蝶的共毒系数为 2 0 4 3;田间使用 10 0 0～ 2 0 0 0倍液 ,药后 1～ 3天对菜粉蝶的防效为86 .8%～ 10 0 % ,药后 7天达 97.8%～ 10 0 %。

The toxicity and control effect of 2.1% cypermethrin-abamectin EC on cabbage butterfly (Pieris rapae L.)were studied.The results showed that its co-toxicity coefficient on cabbage butterfly (Pieris rapae L.)was 204.3 in green-house.The control effects of 2.1% cypermethrin-abamectin EC in field trial reached 86.8%～100% after 1～3 days,97.8%～100% after 7 days with 1000～2000 times diluents.