室内测定了氰戊菊酯残留对菜蛾绒茧蜂成虫的致死和亚致死效应。结果发现,氰戊菊酯对菜蛾绒茧蜂成虫的毒力比对小菜蛾2龄幼虫的高10倍以上,因此可以肯定田间施用氰戊菊酯后,可以直接(喷雾)或间接(残留)杀死部分菜蛾绒茧蜂成虫。小菜蛾2龄幼虫LC_(50)剂量的氰戊菊酯残留显著降低了雌蜂的产卵量和供试小菜蛾幼虫的被寄生率,在氰戊菊酯残留存在的情况下,雌蜂的死亡率高于雄蜂,蜂子代存活率及性比显著低于对照。氰戊菊酯残留对菜蛾绒茧蜂的搜索行为也有显著的影响,雌蜂在叶片上停留的时间及用于搜索的时间均高于对照,表明残留对菜蛾绒茧蜂雌蜂的搜寻有刺激作用,但产卵寄生的发生次数与对照间无显著差异。文中对产生上述结果的原因进行了讨论。 The lethal and sublethal effects of fenvalerate residues on adults of the parasitoid Apanteles plutellae were determined indoors. The results showed that the virulence of fenvalerate was higher than that of the 2nd instar larvae of Plutella xylostella by more than 10 times higher than that of the 2nd instar larvae of Plutella xylostella, so we could affirm that fenvalerate could be applied directly (sprayed) or indirectly ) Kill part of the diamondback moth adults. The LC_ (50) dose of fenvalerate residues in the 2nd instar larvae of the diamondback moth significantly decreased the fecundity of the female bee and the parasitic rate of the test moth larvae. In the presence of fenvalerate residues, Mortality higher than drone, bee generational survival rate and sex ratio was significantly lower than the control. Residues of fenvalerate also had a significant effect on the search behavior of the parasitoids of the parasitoid Apanteles plutellae. The time spent on the leaves of the female wasps and the time for searching were higher than that of the control There is a stimulating effect, but there is no significant difference between the number of spawning parasites and the control. The reasons for the above results are discussed in this paper.