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自１９９５～１９９７年在杭州市郊对菜粉蝶绒茧蜂的田间种群消长动态进行了调查，并在室内测定了７类１１种常用杀虫剂对该蜂的毒性。结果表明，该蜂在５～７月份的寄生率较高，８～９月份较低，晚秋后又有回升，年度之间有一定差异。在供试的１１种药剂中，抑太保和Ｂｔ对该蜂成虫最为安全，其次为杀灭菊酯，而有机磷和氨基甲酸酯类农药的毒性最大；在供试的９种农药中，巴丹对茧的毒性最大，羽化率为０，其它药剂对该蜂的羽化影响不大，但辛硫磷和乐果对羽化后的成虫有极高的毒性。本文对如何协调农药与天敌的关系进行了讨论。
The dynamics of the population dynamics of the field population of Braconid parakerella in the suburbs of Hangzhou during 1995-1997 were investigated and the toxicity of 7 classes of 11 commonly used insecticides to this species was determined indoors. The results showed that the parasitism rate of the bee was higher from May to July, lower from August to September and then rose again after the late autumn with a certain difference between the years. Among the eleven pesticides tested, both epididymal and Bt were the most safe for the bee adults, followed by fenvalerate, while the organophosphate and carbamate pesticides were the most toxic. Among the nine pesticides tested, Dan had the highest toxicity to cocoons with a rate of emergence of 0, while other agents had little effect on the eclosion of the bee, but phoxim and dimethoate were extremely toxic to adult adults after emergence. This article discusses how to coordinate the relationship between pesticides and natural enemies.