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关于稻螟赤眼蜂Trichogramma japonicamAshmead在稻螟种群演变中的作用,周圻同志已有论述(本刊1986,23(5):193—196),他的结论“三化螟种群的盛衰,又能强烈地影响稻螟赤眼蜂的盛衰,稻螟赤眼蜂的盛衰,又转而强烈地影响二化螟种群的消长”,揭示了稻田诸种昆虫之间微妙联系之一例,是很有意义的。我们也曾形象而又诙谐地提出过“三化螟可以防治二化螟”这一说法,其原因也在于此。除周文中已说到的①三化螟是稻螟赤眼蜂在田间最大的补充和繁殖寄主;②赤眼蜂对二化螟控制有效果,即二化螟卵块单层,卵寄生率可高达90％以上这两点原因外,我们认为还有一点,即三化
As for the role of the Trichogramma japonicam Ashmead in the evolution of the rice borer population, Comrade Zhou Li (1986,23 (5): 193-196) concluded that “the succession or decline of the rice borer population, Can strongly influence the rise and fall of Trichogramma ostriniae, the rise and fall of Trichogramma ostriniae, which in turn has a strong effect on the growth and decline of the rice stem borer population, ”revealing one of the subtle associations between various insect species in paddy fields meaningful. We also have the image and witty put forward the “Three Borer can prevent Chilo suppressalis” this reason, this is why. In addition to Zhou Wenzhong has said ① Borer is the largest red silkworm beetles in the field of the largest supplement and propagation host; ② Trichogramma on the control of Chilo suppressal results, that is, a single layer of Chilo suppressalis, egg parasitization rate Up to 90% above these two reasons, we think there is one thing, that is, three