摘要
利用浓度为4.0×104～4.0×108个/mL的球孢白僵菌MZ050724分生孢子液对3龄和4龄亚洲玉米螟幼虫进行毒力测定研究。结果表明,该菌株具有较高的杀虫活性,对3龄幼虫最高累计校正死亡率为88.65%,致死中浓度WEI(2.195±0.135)×104个/mL,致死中时间(4.30±0.16)d;对4龄幼虫最高累计校正死亡率为85.75%,致死中浓度为(4.362±0.088)×105个/mL,致死中时间(4.77±0.11)d。相比较对3龄幼虫的防治效果好于对4龄幼虫的防治效果。
The virulence of Beauveryia bassiana MZ050724 to 3rd and 4th larvae of Ostrinia furnacalis under five different concentration from 4.0×104-4.0×108 spores/mL was studied.Results indicated that the virulence of Beauveryia bassiana MZ050724 to larvae of Ostrinia furnacalis was high.The adjusted accumulative mortality of 3rd larvae was 88.65 %,LC50 was（2.195±0.135）×104 spores/mL,LT50 was（4.30±0.16）d;and adjusted accumulative mortality to 4th larvae was 85.75 %,LC50 was（4.362±0.088）×105 spores/mL,LT50 was（4.77±0.11）d.The control effect of Beauveryia bassiana MZ050724 against 3rd larvae of Ostrinia furnacalis was higher than that of it to 4th larvae.
出处
《西南农业学报》
CSCD
北大核心
2011年第2期608-611,共4页
Southwest China Journal of Agricultural Sciences
基金
国家自然科学基金项目(30860005)
云南省基金项目(2008CD124)
关键词
球孢白僵菌
亚洲玉米螟
幼虫
毒力
Beauveryia bassiana
Ostrinia furnacalis
Larvae
Virulence
