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通过田间释放带毒卵寄生蜂,实施玉米螟卵期接毒并加快寄生蜂世代繁殖,有效发挥卵寄生蜂直接寄生和病毒杀虫的双重作用。应用结果显示,带毒卵寄生蜂对2代玉米螟的防治效果平均为81.1%,对3代玉米螟的防控效果平均为55.5%;草蛉、蜘蛛、瓢虫等天敌田间数量比单一化学防治田平均增加30%,百株玉米天敌数量平均增加63.8头。
Through the release of poisonous eggs parasitic wasps in the field, the implementation of corn borer poisoning and speed up the parasitic wasp generation multiplication, effectively play a direct role in egg parasitoid parasites and virus insecticidal dual role. The results showed that the control effect of the parasitoid with poisonous eggs on the second generation of corn borer was 81.1% on average and that of the third generation of corn borer was 55.5% on average. The numbers of natural enemies such as weeds, spiders, ladybugs, The control field increased by 30% on average, and the number of natural enemies per 100 plants increased by an average of 63.8.