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从青杨天牛虫尸上分离出枝顶孢霉、球孢白僵菌、金龟子绿僵菌、轮状镰刀菌和尖孢镰刀菌5种病原真菌,其中枝顶孢霉为国内新记录。利用青杨天牛蛹对五种致病真菌进行了生物测定,5种病原菌的致病力顺序为:金龟子绿僵菌>球孢白僵菌>枝顶孢霉>尖孢镰刀菌>轮状镰刀菌。青杨天牛不同虫期对金龟子绿僵菌的易感性顺序为:1龄幼虫>蛹>老熟幼虫。利用金龟子绿僵菌和枝顶孢霉菌液田间防治青杨天牛幼虫,死亡率分别为95.56％及48.72％。
Five species of pathogenic fungi, Acremonium species, Beauveria bassiana, Metarhizium anisopliae, Fusarium graminearum and Fusarium oxysporum were isolated from the insect body of P. chingii. Five pathogenic fungi were determined by using the pupae of Populus euphratica. The pathogenicity of the five pathogenic fungi was Metarhizium anisopliae> Beauveria bassiana> Acremonium cladospora> Fusarium oxysporum> Fusarium verticillium . The order of susceptibility to Metarhizium anisopliae at different stages was as follows: 1st instar larvae> pupae> mature larvae. Mortality of Metarhizium anisopliae and Acremonium sp. Was 95.56% and 48.72%, respectively.