【摘要】 调查并比较了浙江省自然环境条件与水稻栽培制度明显不同的三个地区即安吉、嘉兴和兰溪单季稻、双季晚稻与茭白田中二化螟的自然寄生情况。结果表明，寄生蜂种类以安吉地区相对较多，二化螟绒茧蜂是三地共有的主要寄生蜂。嘉兴与安吉稻田中二、三代二化螟的卵寄生率均很低。幼虫寄生率，各地均以茭白上的为相对较高。三个地区中，单季稻田与双季晚稻田内幼虫寄生率均以兰溪地区相对较高，茭白田内寄生率则以安吉地区相对较高。在嘉兴与安吉，二化螟绒茧蜂与稻螟小腹茧蜂两者发生的时间格局有明显的差异。更多还原

【Abstract】 This paper surveys and compares parasitism of the striped stem borer, Chilo suppressalis, in single rice, double rice and wild rice fields in Anji, Jiaxing and Lanxi, representing three significantly different natural environments and rice culture systems in Zhejiang province. The results showed that more wasp species was found in Anji than in Jiaxing and Lanxi Apanteles chilonis was a dominant species in all three areas In Jiaxing and Anji, the parasitic rates of egg masses of the insect were significantly lower in both single and double rice fields The parasitic rates of the insect larvae in wild rice fields were much higher than those in the other habitats Among the 3 areas larval parasitic rates in single and double rice fields were higher in Lanxi, and the highest parasitic rate in wild rice fields occured in Anji The occurrence patterns of two important wasps, A chilonis and Microgaster russata, were significantly different both in Jiaxing and Anji更多还原