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飞虱缨小蜂是褐稻虱、白背稻虱、灰稻虱等水稻害虫的卵期寄生性天敌,它们是抑制稻虱为害的重要因素。但是,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。探明外界环境因子对缨小蜂群落的消长关系,从而采取相应的保护措施加以利用,是生物防治的组成部分,1979年我们对此进行了一些调查研究,现将结果整理如下: 一、飞虱缨小蜂对低温敏感性的测定
Oviductus is a parasitoid egg-stage natural enemy of pests such as brown planthopper, white back planthopper and gray planthopper. They are the important factors inhibiting the damage of planthopper. However, due to environmental factors, different field management, especially the effects of pest control, the parasitism rates at different growth stages in different regions and rice vary greatly. To find out the relationship between environmental factors and the growth and development of the community of Cerambyces, so as to take appropriate protection measures to be used, is part of biological control, we conducted some research in 1979, the results are summarized as follows: First, the fly Determination of the sensitivity of the louse to the low temperature