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经测定,敌百虫对荔蝽平腹小蜂的LC_(50)为17.9ppm.本试验取10ppm作为对该蜂的亚致死剂量,用此剂量处理成蜂1h,成蜂平均寿命为6.4d,而对照组(丙酮处理)平均寿命为30.9d,两者差异极显著;用此剂量处理过的成蜂,寄生率为30.1%。而对照组为47.5%,差异显著.用3种杀虫剂处理寄主卵内不同发育期的平腹小蜂,其中杀虫双、杀灭菊脂对各发育期影响均较小,最高死亡率不超过6%,故在防治果蛀虫时可选择使用;甲胺磷对荔蝽平腹小蜂的卵期、幼虫期和预蛹期可造成20%-30%的死亡率,而且该药残效期长,建议在释放寄生蜂的果园避免使用此药防治害虫.
It was determined that the LC_ (50) of Trichostrongylus on the Lygus aphid wasps was 17.9ppm.In this experiment, 10ppm was taken as the sublethal dose to the bee, and treated with this dose for 1h, the average life span of the bees was 6.4 days , While the average life expectancy of the control group (acetone treatment) was 30.9d, the difference between the two was extremely significant. The parasitism rate of adult bees treated with this dose was 30.1%. While the control group was 47.5%, the difference was significant.With three kinds of insecticides to deal with the eggs of different developmental stages in the host eggs, the insecticidal double and desaturase had little effect on each developmental stage, the highest mortality Not more than 6%, so it can be used in the prevention and treatment of fruit borer; Methamidophos can cause 20% -30% mortality in eggs, larvae and pre-pupal stages, Period, it is recommended in the orchard release parasitic bees to prevent the use of this medicine to control pests.