增效醚及增效胺对3种杀虫剂防治德国小蠊的增效作用

Synergistic effects of PBO and MGK264 onthree insecticides against Blattella germanica

目的 通过测定增效醚(PBO)和增效胺(MGK264)对3种杀虫剂防治德国小蠊的增效作用,为增效剂在德国小蠊防治中的应用提供依据。方法 采用药膜法测定不同比例下增效剂对杀虫剂防治德国小蠊的增效作用,在此基础上利用选取增效作用最佳的浓度比例配制定量气雾剂,用圆筒法测定增效剂对杀虫气雾剂的增效作用。结果 2种增效剂对3种杀虫剂均有不同程度的增效作用,且除了PBO对残杀威外,基本表现出增效效果与增效剂浓度呈正比的关系。其中,PBO分别与0.05%高效氯氰菊酯、0.05%右旋苯醚氰菊酯及0.05%残杀威混配后,最佳增效含量分别为0.4%、0.4%、0.025%;MGK264与3种杀虫剂混配最佳增效浓度均为0.4%。配制成杀虫气雾剂后,PBO对0.1%高效氯氰菊酯气雾剂、0.2%右旋苯醚氰菊酯气雾剂和0.5%残杀威气雾剂的增效比分别为17%、15%、33%,MGK264对这3种杀虫剂的增效比分别为9%、19%、20%。结论 PBO和MGK264可作为防治德国小蠊杀虫剂的理想增效剂产品,在家卫杀虫产品中广泛应用。

Objective To determine the synergistic effects of piperonyl butoxide(PBO)and Octacide 264(MGK264)on three insecticides against Blattella germanica,and to provide evidence for the application of synergistic agents in the control of B.germanica.Methods The synergic effect of synergist on the insecticide on B.germanica was determined by the drug membrane contact method.On this basis,the quantitative aerosol was prepared by selecting the best concentration ratio of synergist,and the synergic effect of synergist on the insecticide in the aerosol was determined by the cylinder method.Results The two synergists had different degrees of synergistic effect on the three insecticides,and except PBO on propoxur,the synergistic effect was basically proportional to the concentration of synergistic agent.When PBO was mixed with 0.05%cypermethrin,0.05%d-cypermethrin and 0.05%propoxur,the optimal synergistic content was 0.4%,0.4%and 0.025%,respectively.The optimal synergistic concentration of MGK264 mixed with three insecticides was 0.4%.The synergies of PBO to 0.1%beta-cypermethrin,0.2%d-cypermethrin aerosol and 0.5%propoxur aerosol were 17%,15%and 33%,respectively,and the synergies of MGK264 to these three insecticides were 9%,19%and 20%,respectively.Conclusion PBO and MGK264 can be used as the ideal synergist products for the control of B.germanica widely in household sanitary insecticides.