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经大面积试验示范表明,利用松毛虫赤眼蜂防治苹果小卷叶蛾、梨小食心虫,寄生率可达90％左右,效果好于化学防治。放蜂园松毛虫赤眼蜂寄生率始终稳定在80.8～98.65％的范围内,而对照园波动幅度颇大。果园赤眼蜂释放技术主要是:①适期放蜂,用性诱剂诱捕,确定始蛾期,后推3～5天即为放蜂始期;②在害虫产卵盛期末前,分4次将蜂放完;③在虫情发生稍重时,亩放12万头蜂即可获得较高寄生率。
After a large area demonstration shows that the use of trichogramma dendrolimi apple small leaf roller prevention and control, parasitism rate of up to 90%, better than chemical control. The release rate of parasitism of Trichogramma dendrolimi in bee-bee park was always within the range of 80.8-98.65%, while that of control park was quite fluctuant. Orchard Trichogramma release technology is mainly: ① appropriate to put the bees, sexual lure trapping, to determine the initial moth period, push 3 to 5 days is the release of the beginning of the beekeeping; ② pest spawning peak before the end of 4 times The bee finished; ③ in the case of insects slightly heavier, mu put 120,000 bees to get a higher parasitic rate.