220g/L氯氰·毒死蜱EC对小麦蚜虫的防效及应用技术初探

A Report of 220g/L CypermethrinChlorpyrifos EC against Wheat Aphid

为了寻求防治小麦蚜虫的高效、低毒、低残留药剂,进行了氯氰·毒死蜱EC防治小麦蚜虫试验,结果表明,220 g/L氯氰·毒死蜱EC对小麦蚜虫有较好的防治效果,其药效随用药量增加而上升,其中药后3 d、7 d 220 g/L氯氰·毒死蜱EC 50 mL/667m2的校正防效分别为92.4%、90.8%,与40%毒死蜱EC 100 mL/667m2效果相仿,并极显著优于10%氯氰菊酯EC 50 mL/667m2的防效(P<1%),药后14 d 220 g/L氯氰·毒死蜱EC 50 mL/667m2的校正防效达88.9%,极显著优于40%毒死蜱EC 100 mL/667m2、10%氯氰菊酯EC 50 mL/667m2(P<1%)。220 g/L氯氰·毒死蜱EC50 mL/667m2速效性较高、持效期较长、安全性较好,因此可以在生产上加以推广与应用。

Field efficacy trials indicated 220 g/L CypermethrinChlorpyrifos EC had a good effect on controlling the wheat aphid.Pest preventing efficiency grow with dose increaseing,the treatment of 50 mL/667m 2 with a efficiency up to 92.4%,90.8% when 3 days and 7 days after pesticide spraying,respectively,which was significantly better than 10% Cypermethrin EC,but had no significant difference with 40% Chlorpyrifos EC.And pest controlling efficiency still stayed in a high level after 14 days,which was significantly better than 10% Cypermethrin EC and 40% Chlorpyrifos EC.Moreover,220 g/L CypermethrinChlorpyrifos EC 50 mL/667m 2 was quickacting, safe,and had long residual activity.A regional application could be developed.