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1978～1982年,在成都调查水稻二化螟寄生性天敌,寄生蜂有19种,优势种为稻螟赤眼蜂、螟甲腹茧蜂、稻螟小腹茧蜂、夹色姬蜂和大螟钝唇姬蜂。卵粒寄生率第一代为2.63％,二代40.73％,三代85.54％;幼虫寄生率一代为28.30％,主要寄生于3～5龄幼虫体内,3龄寄生率为28.57％,4龄55.56％,5龄33.33％,蛹寄生率一代为56.25％,二代57.53％,越冬代8.82％。对二化螟有一定的控制作用。本文还就化学农药对寄生蜂的影响进行了分析。
From 1978 to 1982, 19 species of parasitoids were investigated in Chengdu, China. The dominant species were Trichogramma ostriniae, Aphis gossypii, Polyps myeater. Oviposition rate was 2.63% for the first generation, 40.73% for the second generation and 85.54% for the third generation. The parasitism rate of the larvae was 28.30% for one generation, which was mainly parasitized in 3rd to 5th instar larvae. The parasitism rate of the 3rd instar larvae was 28.57% , The fifth instar 33.33%, the pupal parasitism rate was 56.25% for one generation, 57.53% for the second generation and 8.82% for the overwintering generation. Stem borer has some control. The article also analyzes the influence of chemical pesticides on parasitoids.