几种杀虫剂对酢浆草如叶螨的毒力及增效作用研究  

Research on toxicities and synergism of several pesticides against the oxalis spider mite,Tetranychina hatri

作　　者：杨丽红[1] 陈光升[1] 贾小东[1] 苏瑞军[1] 朱利君[1] 

机构地区：[1]绵阳师范学院生命科学与技术学院,四川绵阳621006

出　　处：《环境昆虫学报》2017年第6期1382-1386,共5页Journal of Environmental Entomology

基　　金：四川省教育厅项目(12ZA078);绵阳师范学院项目(2012A15;QD2013A06)

摘　　要：采用药膜法,研究了甲氰菊酯、氧乐果及毒死蜱对酢浆草如叶螨的毒力及增效作用。结果表明,酢浆草如叶螨对氧乐果最敏感,LC_(50)为28.48 mg/L,甲氰菊酯次之,LC_(50)为394.55 mg/L,毒死蜱最不敏感,LC_(50)高达5876.43 mg/L;增效试验表明,磷酸三苯酯(TPP)、增效醚(PBO)及顺丁烯二酸二乙酯(DEM)对3种杀虫剂均有一定的增效作用,总体上,TPP的增效最好,PBO次之,DEM增效作用稍差。因此,氧乐果和甲氰菊酯对酢浆草如叶螨有较好防治作用,应减少毒死蜱使用;酯酶、多功能氧化酶及谷胱甘肽S-转移酶是该螨最重要的解毒代谢酶。Using the residual contact vial method,the toxicities and synergism of fenpropathrin,omethoate and chlorpyrifos against the oxalis spider mite,Tetranychina hatri were studied. The results showed that T.hatri was the most susceptible to omethoate and LC50 was 28. 48 mg/L,fenpropathrin followed and the LC50 was 394. 55 mg/L,but chlorpyrifos was worst and LC50 was 5876. 43 mg/L. The synergism study results showed that the toxicities of fenpropathrin,omethoate and chlorpyrifos to the mite increased by TPP,PBO and DEM on some extent. In total,the synergism of TPP was best,PBO followed,and DEM was worst.So,omethoate and fenpropathrin have better control effect on T. hatri,but chlorpyrifos should be used as little as possible. Esterases and mixed-functional oxidases are the most important detoxification enzymes in the mite.

关 键 词：杀虫剂 酢浆草如叶螨 毒力 增效剂 

分 类 号：Q965.9[生物学—昆虫学] S433.7[农业科学—农业昆虫与害虫防治]