白僵菌防治烟田小地老虎试验

Experiment on Control of Agrotis ypsilon Rottemberg in Tobacco Field with Beauveria bassiana

摘要: 观测了小地老虎的生活史,并用白僵菌对烟田小地老虎进行了防治试验。结果表明:云南省玉溪烟区小地老虎1年发生4代,以老龄幼虫和蛹在4~8cm土层中越冬;利用白僵菌防治烟田小地老虎效果显著,白僵菌对小地老虎的侵染死亡率在95%以上,校正死亡率为98.2%,施用白僵菌防治小地老虎的烟田中烟苗和烟株受害率显著下降。

Abstract: The life history of Agrotis ypsilon Rottemberg was observed, and the control of Agrotis ypsilon Rottemberg in tobacco field with Beauveria bassiana was experimented.The results showed that there were 4 generations per year for Agrotis ypsilon Rottemberg and the aged larva and pupa overwintered in the soil depth of 4-8 cm;the effects of Beauveria bassiana on Agrotis ypsilon Rottemberg controlling in field were obvious, the infected mortality was over 95% and corrected mortality was 98.2%, and the attacked seedlings and plants in test tobacco field decreased significantly.