个/ml浓度下,8 d后莱氏野村菌对甜菜夜蛾3龄幼虫的最大致死率达88.57%,其致死中时间为4.25 d,致死中浓度为2.43×10<'5>个/ml.%The pathogenicity of Nomuraea rileyi sporus at different concn. to the 3rd'/>
莱氏野村菌对甜菜夜蛾3龄幼虫的毒力测定-朱春燕袁盛勇孙士卿孔琼薛春丽李河-中文期刊【掌桥科研】
采用喷雾法测定莱氏野村菌不同浓度孢子对甜菜夜蛾3龄幼虫的致病性.结果表明,在4.2×10<'8>个/ml浓度下,8 d后莱氏野村菌对甜菜夜蛾3龄幼虫的最大致死率达88.57%,其致死中时间为4.25 d,致死中浓度为2.43×10<'5>个/ml.%The pathogenicity of Nomuraea rileyi sporus at different concn. to the 3rd aged larvae of asparagus caterpillar was determined by spraying method. The results indicated that at the concn. of 4. 2 × 108/ml, the maximum lethality of N. rileyi to the 3rd aged larvae of asparagus caterpillar reached 88.57％ after 8 d and its median lethal time and median lethal concn. were 4.25 d and 2.43 × 105/ml resp.
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