金龟子绿僵菌 CQMa421 与 4 种新烟碱类农药混配对西花蓟马毒力的增 效作用.

In this study, leaf tube film method was used to determine the indoor virulence of Metartaria anisopliae CQMa421 mixed with neonicotinoid pesticides（thiamethoxam, thiamethoxidin, imidacloprid, and amidine） in different active component ratios（1∶ 9,3∶ 7,5∶ 5,7∶ 3,9∶ 1）.The results showed that the virulence of four neonicotinoid pesticides at 24 h and 48 h was in the order of thiamethoxam ＞ thiamethoxam ＞ acetamidine ＞ imidacloprid, which was higher than that of Metarium anisopliae CQMa421,but the mixture of Metarium anisopliae with thiamethoxam and imidacloprid（1∶ 9,3∶ 7,5∶ 5,7∶ 3,9∶ 1） had significant synergistic effect. Metarhizium anisopliae mixed with clothianidin and acetamidine（9∶ 1,7∶ 3） also had a good synergistic effect.It can be seen that the mixture of Metartaria anisopliae and neonicotinoid pesticides can alleviate the pesticide resistance, which provides a reliable scientific basis and a new way for the resistance management of neonicotinoid pesticides in Frankliniella occidentalis. [ABSTRACT FROM AUTHOR]