几种不同类型药剂防治麦蚜的效果及对天敌的影响

The Efficacy of Different Insecticides to Wheat Aphids and the Impact to Natural Enemy

室内毒力测定和田间药剂试验表明,小麦穗期使用生物性、植物性和低毒性杀虫剂代替高毒性的有机磷杀虫剂防治麦蚜,可以达到既有效控制麦蚜危害又保护天敌的目的。药后5～7d,其防效为75.61%～98.95%,对天敌的保护效果为34.89%～69.77%,对天敌多样性指数的影响明显低于氧化乐果。

The research result showed that the biologic,Vegetal and low toxicity insecticide to wheat aphids was effective in wheat fringe period. The control efficacy could reach 75.61%～98.95% and protection effect rate for natural enemy reach 34.89%～69.77% at 5～7 days latter. The impact to diversity index of natural enemy was lower than the omethoate.