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1957年在饲养田间采集的地老虎幼虫工作中,发现感染红僵菌而死的幼虫多头。1957、58年观察红僵菌对地老虎的寄生占总寄生率(包括寄生虫、菌)的50％以上。室内接种不同地老虎的感病性测定结果:大地老虎(A,tokionis Butler)、小地老虎(Agrotis Ypsilon Ro tt.)、黄地老虎[EnxoaSegetum(Schffermuller)]均呈易感性。接种室内3—6龄幼虫也全部罹病死亡。罹病6龄幼虫取食量为正常同龄幼虫的50.42％,后期已不能咬断烟株。该菌对地老虎幼虫致病力强、致死率高,对地老虎的为害有一定的抑制作用,且可降低虫口量。受于1958—1963年间陆续观察了该菌侵染循环,生物学特性,及对地老虎的防治效果等。现整理结果报导如下。
In 1957, in the field tiger larvae collected in the field, the larvae that died of the infection of the red bean were found to be long. In 1957, 58 years, the observation that the parasitism of M. anisopliae was over 50% of the total parasitism (including parasites and bacteria). Sensitivities of indoors to different tigers: Susceptibility to A to tokionis Butler, Agrotis ypsilon Ro tt., EnxoaSegetum (Schffermuller). Inoculation of indoor 3-6 instar larvae also all died. The 6th instar larvae fed on the disease had 50.42% of the normal larvae of the same age and could not sever the tobacco plants later. The bacteria on the ground tiger larvae strong virulence, high mortality rate, to the damage of the tiger has a certain degree of inhibition, and can reduce the amount of insects. By the 1958-1963 years successively observed the bacteria infection cycle, biological characteristics, and prevention and treatment of ground tiger effect. Finishing results are reported below.