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绿僵菌在室内对马尾松毛虫3～4龄幼虫的毒力与白僵菌相当，其LD50＝7．95×107个／L，LT50＝6．61～13．08天（孢子数在1．0×1011～1．0×107个／L）．本文还比较了绿僵菌和白僵菌在不同温度、湿度下的分生孢子萌发率．实验结果表明，绿僵菌在防治马尾松毛虫上具有较大的开发应用价值．
Metarhizium anisopliae brucellosis 3rd and 4th instar larvae virulence and Beauveria bassiana quite, LD50 = 7.95 × 107 个 / L, LT50 = 6.61 ~ 13.08 days (spores in 1 .0 × 1011 to 1.0 × 107 / L). This article also compared the Metarhizium anisopliae and Beauveria bassiana in different temperature and humidity conidia germination rate. The experimental results show that Metarhizium anisopliae in the prevention and control of Dendrolimus punctatus has greater development and application value.