微生物农药联合防治亚洲玉米螟的研究

Study on Microbial Insecticides Combined Control of Asian Corn Borer in Field

本研究使用植保无人机联合喷施球孢白僵菌(Beauveria bassiana)(Bb)、金龟子绿僵菌(Metarhizium anisopliae)(Ma)和苏云金芽孢杆菌(Baci1lus thuringiensis)(Bt)三种微生物杀虫剂菌悬液,防治第二代亚洲玉米螟。结果表明:球孢白僵菌和金龟子绿僵菌联合使用的处理中亚洲玉米螟幼虫发生密度、被害株率、蛀孔率以及孔道长度均显著低于其他接种组和空白对照组,田间防治效果最好。结果证明,针对特定害虫的特定防治时期,生物防治的联防技术可以取得很好的防治效果。

The research of biological control the 2nd generation Asian corn borer was conducted using unmanned aerial vehicle to spray Beauveria bassiana,Metarhizium anisopliae and Baci1lus thuringiensis synthetically in field.The result shows that pest density,percentage of damaged plants,percentage of borehole,and length of borehole in treatment of B.bassiana with M.anisopliae were significant lower than other treatments and the control,which indi⁃cated that the treatment achieved significant control effect.The results shows that the biocontrol technology of bio⁃logical control can achieve good control effect in the specific control period of specific pests.