飞机喷洒5%复方敌杀死乳剂防治马尾松毛虫试验

Experiment on Spraying 5% Compound Disashi Emulsion with Plane to Control Dendrolimus punctatus Walker

应用5%复方敌杀死乳剂、25%菊乐合脂乳剂,进行飞机超低量喷雾,防治马尾松毛虫,效果显著。其中,复方敌杀死每亩用药3、4毫升,防治3～4龄幼虫,平均死亡率为95.2%、97.8%;每亩用药4.5毫升,防治5～6龄幼虫,平均死亡率为96.6%。药效稳定,成本较低,并可延缓害虫产生抗药性。

The effect is remarkable spraying 5% compound Disashi emulsion and 25%fenvalerate dimethoate emulsifier with plane to control Dendrolimus punctatus Walker. Aver-age rate of death is 95.2%, 97.8% spraying 3, 4 ml compound Disashi per mu to control larvaof 3～4-year-old larva; average rate of death is 96.6% Spraying 4.5 ml compound Disashi permu to control 5～6-year-old larva. The effectiveness of insecticide is in a calm and cost islower and it can delay destructive insect to become drug-fast.