中国生物防治学报2017，Vol.33Issue(6)：752-759,8.DOI:10.16409/j.cnki.2095-039x.2017.06.006
球孢白僵菌与三种农药对萝卜蚜的协同防治效果
Synergistic Effect of Beauveria bassiana and Three Pesticides on Lipaphis erysimi
摘要
Abstract
A highly virulent strain of entomopathogenic fungus Beauveria bassiana against aphids was obtained.However,its field application is restricted because aphid reproduction is rapid while B.bassiana infection is relatively slow.To overcome the problem,we conducted a series of bioassay tests against the aphid Lipaphis erysimi,using B.bassiana and three pesticides individually,imidacloprid,dimethoate and beta-cypermethrin at different concentrations,as well as mixtures of the fungus with each pesticide.The results showed that B.bassiana alone at 0.08 × 106-50 × 106 spores/mL caused a 47.0％-89.3％ mortality rate of the aphids.The mortality was significantly increased to 97.3％～ 100％ by a mixed treatment of 2 × 106 spores/mL ofB.bassiana with a sublethal concentration of each of the three pesticides,i.e.,1/10 of the recommending concentration of imidacloprid,1/5 of the recommending concentration of dimethoate or beta-cypermethrin.Moreover,the LTs0 of mixed treatment was shortened to 46.9-56.5 h from 76.8 h for B.bassiana alone.In addition,the germination rates of B.bassiana conidia mixed with each pesticide were compatible with each other.This experiment confirmed the synergistic effect of B.bassiana with the three pesticides,and determined the appropriate concentration in the mixed application.The data offer a potential opportunity for reducing chemical pesticide use and improving the effect of B.bassiana in aphid management in the field.关键词
球孢白僵菌/萝卜蚜/吡虫啉/乐果/高效氯氰菊酯/协同增效Key words
Beauveria bassiana/aphid/imidacloprid/dimethoate/cyhalothrin/synergism分类
农业科技引用本文复制引用
王峰,郑鹏飞,农向群,王广君,曹广春,张泽华..球孢白僵菌与三种农药对萝卜蚜的协同防治效果[J].中国生物防治学报,2017,33(6):752-759,8.基金项目
国家重点研发计划(2017YFD0201205) （2017YFD0201205）
中俄合作项目(2012DFR30810) （2012DFR30810）
国家产业技术体系(CARS-35-07) （CARS-35-07）
农业科技成果转化资金项目(2013GB23260581) （2013GB23260581）
