在实验室控温控湿条件下，研究了１０株白僵菌菌株对德国小蠊的侵染能力。试验结果表明不同菌株侵染力存在差异，其中菌株１１５９＃和１１５０＃的侵染力最强，死亡率达５６．７％，其它８个菌株的死亡率为１０．０％～５０．０％。随菌液浓度提高虫体死亡率增加，但死亡速度并无明显加快 Under the condition of controlled temperature and controlled humidity in lab, the infectivity of 10 strains of Beauveria bassiana against Blattella germanica was studied. The results showed that there were differences in the infectivity of different strains. Among them, the strains 1159 # and 1150 # had the strongest infectivity, the mortality rate was 56.7%, the mortality of the other 8 strains was 10.0% ~ 50.0% . With the concentration of bacteria increased worm mortality, but the speed of death did not significantly accelerated