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采用药膜法测定了0．5％林素杀虫乳油对广赤眼蜂、螟黄赤眼蜂和松毛虫赤眼蜂的毒力。结果表明，三种赤眼蜂对0．5％楝素杀虫乳油的敏感性均显著低于对照药剂溴氰菊酯约60倍以上，其LC50分别为140．07、504．07和54．54mg／L。田间药效试验证明，0.5％楝素杀虫乳油对菜青虫绒茧峰、蚜茧蜂及瓢虫、食蚜蝇等昆虫天敌无明显影响。
The cytotoxicity of 0.5% Linus pesticide EC against Trichogramma, Trichogramma dendrolimi and Trichogramma trichogramma was determined by the membrane method. The results showed that the sensitivity of three Trichogramma species to 0.5% azadirachtin insecticidal EC was significantly lower than that of the control agent deltamethrin about 60 times, with LC50 of 140.07, 504.07 and 54 respectively. 54mg / L. Field trials showed that 0.5% azadirachtin insecticide EC had no significant effect on insect cocoon peak, aphid Braconidae, and ladybug and hoverfly insects.