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[目的]近年河北省太行山区黑绒鳃金龟成虫对苹果幼树为害严重,筛选其有效控制药剂十分迫切和必要。[方法]采用浸虫法和饲喂法在室内测定了8种药剂对黑绒鳃金龟的生物活性。[结果]480 g/L毒死蜱乳油、20%丁硫克百威乳油和2.5%高效氯氟氰菊酯乳油有较高的药效;进一步毒力测定结果显示:48 h胃毒毒力的LC50值分别为0.3699、0.1860、0.0498 g/L;触杀毒力为0.0379、0.0693、1.6494 g/L。[结论]以上3种药剂有较好防治效果,可用于目前黑绒鳃金龟成虫的防治。
[Objective] In recent years, the adults of T.gitica in the Taihang Mountains of Hebei Province were seriously damaged by the young apple trees. It is urgent and necessary to screen their effective control agents. [Method] The biological activity of 8 kinds of medicaments on Plutella xylostella was determined indoors by the method of dipping and feeding. [Result] The efficacy of 480 g / L chlorpyrifos EC, 20% carbosulfoturil and 2.5% lambda-cyhalothrin EC had higher efficacy. Further virulence determination showed that LC50 Values were 0.3699,0.1860,0.0498 g / L; contact toxicity was 0.0379,0.0693,1.6494 g / L. [Conclusion] The above three kinds of medicaments had better control effects and could be used in the prevention and treatment of the present adult.