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寄生于稻飞虱卵的缨翅缨小蜂(Anagrus spp.)在浙江温州地区已发现的有稻虱缨小蜂、拟稻虱缨小蜂5种。它们是褐稻虱、白背稻虱、灰稻虱卵期主要寄生性天敌,是抑制稻虱为害的重要因素。但由于环境因子、田间管理的不同,特别是施药治虫的影响,使不同地区和水稻不同生育期的寄生率差异很大。为探明外界环境因子对缨小蜂群落的影响,并采取相应的保护措施,我们于1977～1979年进行了一些调查研究,现将结果整理如下。
Anagrus spp. Parasitic on rice planthopper eggs There are 5 small wasps and 2 small wasps in the Zhejiang Wenzhou area. They are the major parasitic natural enemies of the brown planthopper, white back louse and gray slug in the egg stage, and they are the important factors inhibiting the planthopper damage. However, due to environmental factors, different field management, especially the impact of pesticides, so that different regions and rice at different growth stages of parasitism vary widely. In order to find out the influence of external environmental factors on the community of Celastrus xylostella, and take corresponding protective measures, we carried out some investigations and studies from 1977 to 1979, and the results are summarized as follows.