鱼藤酮和除虫菊素与化学杀虫剂复配对麦二叉蚜和荻草谷网蚜的室内毒力测定  

Determination of the Indoor Toxicity of Combined Mixtures of Rotenone or Pyrethrins with Chemical Insecticides to Schizaphis graminum and Sitobion miscanchi

作　　者：毋正花 徐肄昊 苗菲 闫恒旭 欧行奇[1] 周锋 徐莉 刘润强[1] WU Zhenghua;XU Yihao;MIAO Fei;YAN Hengxu;OU Xingqi;ZHOU Feng;XU Li;LIU Runqiang(School of Resources and Environment,Henan Institute of Science and Technology,Xinxiang Henan 453003,China)

机构地区：[1]河南科技学院资源与环境学院,河南新乡453003

出　　处：《植物医学》2024年第6期42-52,共11页Plant Health and Medicine

基　　金：河南省重大科技专项(221100110100);河南省青年人才托举工程项目(2023HYTP003).

摘　　要：为高效防治麦二叉蚜和荻草谷网蚜,本研究采用浸渍法测定了10种植物源杀虫剂和5种化学源杀虫剂对其的室内毒力,结合共毒因子法和共毒系数法,筛选了植物源中毒力较高的鱼藤酮、除虫菊素与5种化学杀虫剂的复配增效配方.单剂毒力测定结果显示,植物源杀虫剂中鱼藤酮和除虫菊素均对麦二叉蚜和荻草谷网蚜表现出最高毒力,LC 50值介于2.522和20.719 mg/L之间,化学杀虫剂噻虫嗪、联苯菊酯、功夫菊酯、啶虫脒、氟啶虫酰胺对两种试虫的LC 50值介于0.404和148.732 mg/L之间.综合共毒因子法和共毒系数法的筛选结果,发现共有3种配比方案对荻草谷网蚜具有明显的增效效果,分别为鱼藤酮+噻虫嗪1∶2、鱼藤酮+氟啶虫酰胺5∶1、除虫菊素+噻虫嗪1∶5.共毒因子法结果表明,所有复配配方及其配比对麦二叉蚜均未表现出增效作用,研究结果为防治麦二叉蚜和荻草谷网蚜的复配制剂开发或生产中抗性蚜虫的防治提供了理论依据.In order to effectively control Schizaphis graminum and Sitobion miscanchi,this study determined the toxicity of 10 botanical insecticides and 5 chemical insecticides by leaf-dip method,and screened synergistic mixtures containing rotenone or pyrethrins with chemical insecticides using co-toxicant factor and co-toxicity coefficient methods.The results showed that,among the botanical insecticides,rotenone and pyrethrins showed the highest toxicity to S.graminum and S.miscanchi,with LC 50 values ranging from 2.522-20.719 mg/L.The LC 50 values of chemical insecticides,including thiamethoxam,bifenthrin,cyhalothrin,acetamiprid,flonicamid to these aphids were ranging from 0.404-148.732 mg/L.A total of 3 mixtures including rotenone+thiamethoxam at 1∶2,rotenone+flonicamid at 5∶1,pyrethrin+thiamethoxam at 1∶5,were screened out,which showed obvious synergistic effect on S.miscanchi.All the determined mixtures showed no synergistic effect on S.graminum.The results provided a theoretical basis for the development of insecticides mixtures for controlling S.graminum and S.miscanchi,and managing their resistance to pesticides.

关 键 词：麦二叉蚜 荻草谷网蚜 杀虫剂复配 共毒因子 共毒系数 

分 类 号：S435.122.1[农业科学—农业昆虫与害虫防治] S436.661.1[农业科学—植物保护]