摘要
莱氏野村菌对棉铃虫幼虫致病力以及田间控制作用的初步研究结果表明,该菌对棉铃虫幼虫有较强的致病力,致病适温24~27℃。田间喷施其孢子液,6d后棉铃虫被寄生率平均达226%。
Infectivity and control of Nomuraea rileyi to Heicoverpa armigera in the fields were studied. Bioassay and spraying the spores in the field showed that the infectivity of N. rileyi to H. armigera was high. LC 50 and LT 50 to the larvae were different in different instars. From 24 ℃ to 27 ℃ N. rileyi could infect H. armigera easily. The infected average rate of the larvae reached 22 6% at 6 days after the spores were sprayed in the fields.
出处
《植物保护》
CAS
CSCD
北大核心
1998年第4期14-17,共4页
Plant Protection
基金
安徽省科委"九五"科技攻关项目
关键词
莱氏野村菌
棉铃虫
致病力
田间控制
Nomuraea rileyi, Heicoverpa armigera, Infectivity, control