球孢白僵菌Bb-10-12对苜蓿叶象甲的室内毒力研究  

A Study on Hypera postica Gyllenhal in Door by Virulence of Beauveria bassiana Bb-10-12

作　　者：李益[1] 徐晓婷[1] 麦合普拜.木合塔尔 赵莉[1] 李克梅[1] 

机构地区：[1]新疆农业大学农学院新疆草地资源与生态实验室,乌鲁木齐830052

出　　处：《新疆农业大学学报》2012年第1期34-37,共4页Journal of Xinjiang Agricultural University

基　　金：现代农业产业技术体系建设专项(CARS-35);公益性行业(农业)项目(201003079)

摘　　要：利用孢子浓度为1.65×105～1.65×109个孢子/mL的球孢白僵菌Bb-10-12菌悬液对苜蓿叶象甲幼虫和成虫进行毒力研究。结果表明,该菌株具有较高的杀虫活性,孢子浓度为1.65×108个孢子/mL时,对2龄幼虫最高累计校正死亡率为100%,致死中浓度为1.3959×106个孢子/mL,致死中时间(7.73±2.81)d;对4龄幼虫最高累计校正死亡率为89.29%,致死中浓度为3.3175×106个孢子/mL,致死中时间(9.10±0.28)d;对成虫最高累计校正死亡率为61.11%,致死中浓度为4.8287×108个孢子/mL,致死中时间(27.48±0.15)d。比较可知,该菌株对苜蓿叶象甲2龄幼虫防治效果最好。The virulence of Beauveria bassiana Bb-10-12 to larvae and adult of Hypera postica Gyllenhal was studied by five different concentrations from 1.65×105~1.65×109 spores/mL.Results indicated that the virulence of Beauveria bassiana Bb-10-12 to Hypera postica Gyllenhal was high.The adjusted accumulative mortality of 2nd larvae was 100%,LC50 was 1.3959×106spores/mL,LT50 was（7.73±2.81） d;Adjusted accumulative mortality of 4th larvae was 89.29%,LC50 was 3.3175×106 spores/mL,LT50 was（9.10 ±0.28） d;Adjusted accumulative mortality of adult was 61.11%,LC50 was 4.8287×108 spores/mL,LT50 was（27.48 ±0.15） d;The control effect of Beauveryia bassiana Bb-10-12 against 2nd larvae of Hypera postica was the best.

关 键 词：球孢白僵菌 苜蓿叶象甲 毒力测定 

分 类 号：S476.12[农业科学—农业昆虫与害虫防治]