5种杀虫剂对梨冠网蝽室内毒力测定及药剂筛选  

Indoor Toxicity Test and Pesticide Screening of Five Pesticides to the Stephanitis nashi Esaki et Takeya

作　　者：范伟彦 张嘉宇 杨德松[1] 张国强[1] 陈刘生[1] FAN Weiyan;ZHANG Jiayu;YANG Desong;ZHANG Guoqiang;CHEN Liusheng(Key Laboratory for Oasis Agricultural Pest Management and Plant Resource Utilization,College of Agronomy,Shihezi University,Shihezi Xinjiang 832003,China)

机构地区：[1]石河子大学农学院/新疆生产建设兵团新疆绿洲农业病虫害治理与植保资源利用重点实验室

出　　处：《新疆农业科学》2020年第2期303-310,共8页Xinjiang Agricultural Sciences

基　　金：新疆生产建设兵团科技计划“城镇绿化苗木梨冠网蝽的生物防治关键技术研究与示范”(2016AC025)~~

摘　　要：【目的】筛选对梨冠网蝽若虫、成虫具有良好防效的杀虫剂,为梨冠网蝽的药剂防治提供参考。【方法】选用5种药剂采用室内浸叶生测法对梨冠网蝽进行毒力测定。【结果】45%毒死蜱EC 800、1000倍液,25%噻虫嗪WG 500、1000倍液,20%啶虫脒SP 500、1000倍液对梨冠网蝽具有较好的防治效果,且每个药剂各浓度之间防效并无显著差异,对若虫的LC 50值分别为497.47、574.765、589.3436 mg/L;对成虫的LC 50值分别为505.445、545.484、596.2546 mg/L。这5种药剂的毒力排序为45%毒死蜱EC>25 g/L高效氯-氰菊酯EC>20%啶虫脒SP>25%噻虫嗪WG>6%阿维氯苯酰SC。【结论】5%毒死蜱EC 800、1000倍液,25%噻虫嗪WG 500、1000倍液,20%啶虫脒SP 500、1000倍液可用于梨冠网蝽的防治。【Objective】In order to screen out insecticides with good control effect on nymphs and adults of Stephanitis nashi Esaki et Takeya,and provide references for the control of the pest.【Methods】The toxicity of five insecticides to the Stephanitis nashi Esaki et Takeya was determined by the method of leaf immersion bioassay in laboratory.【Results】45%chlorpyrifos EC 800,1,000 times liquid,25%thiamethoxam WG 500,1,000 times liquid,20%acetamiprid SP 500,1,000 times liquid had better control effect on Stephanitis nashi Esaki et Takeya.The LC 50 values of nymphs were 497.476,574.765,and 589.343 mg/L,respectively;the LC 50 values for adults were 505.445,545.484,and 596.254 mg/L respectively.The virulence of these five agents ranked as 45%chlorpyrifos EC>25 g/elevated potency Cyhalothrin EC>20%acetamiprid SP>25%thiamethoxam WG>6%averochlorobenzoyl SC.【Conclusions】5%chlorpyrifos EC 800,1,000 times liquid,25%thiamethoxam WG 500,1,000 times liquid,20%acetamiprid SP 500,1,000 times liquid can be used for the prevention and treatment of Stephanitis nashi Esaki et Takeya.

关 键 词：梨冠网蝽 毒力测定 药效筛选 防效 

分 类 号：S47[农业科学—农业昆虫与害虫防治]