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赤眼蜂是水稻螟虫的主要寄生天敌,对螟害的发生起了明显的抑制作用.但由于稻田长期施用杀虫脒等农药,赤眼蜂受到大量杀伤.据我们从1977年至1987年在泉州地区对稻螟赤眼蜂(Trichogrammajaponicum Ashmead)进行考察,发现十年来稻田中赤眼蜂的种群数量和寄生率均明显下降.为了摸清十年来防治水稻螟虫的主要农药杀虫脒对赤眼蜂的影响,我们在泉州农校农场进行了一些试验.
Trichogramma is the main parasitic natural enemy of rice stem borer, which has a significant inhibitory effect on the occurrence of stem borer.But Trichogramma was heavily killed in long-term application of pesticides such as chlordimeform in paddy fields.According to our from 1977 to 1987 in In Quanzhou, the investigation of Trichogrammajaponicum Ashmead showed that the population and the parasitism of Trichogramma were significantly decreased in the past ten years.In order to find out the effects of chlordimeform, a major pesticide against rice stem borer, The impact of bee, we farm in Quanzhou farms conducted some experiments.