在北美,核型多角体病毒(NPV)病的流行造成舞毒蛾种群密度下降.美国农业部用它来进行空中喷撒以压低舞毒蛾虫口密度.目前使用类似化学防治的方法来使用微生物杀虫剂控制舞毒蛾.由于生产病毒的成本关系,单独应用此法达到大面积传播病毒是行不通的.为此期望一个有效的办法把病毒从发病中心传播出去.一般认为,寄生和捕食天敌是传播昆 In North America, the population density of Gypsy moths has decreased due to the prevalence of NPV, and the USDA uses it for aerial spraying to lower the population density of Gypsy moths. A similar chemical control approach is currently being used to use microbiocidal insecticides Agent control of Gypsy moth.Because of the cost of producing the virus, the application of this method alone to achieve large-scale transmission of the virus is not feasible.To this end, an effective way to spread the virus out of the center of the disease is generally believed that the parasitic and predation of predators is the spread Kun