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1984～1986年在浙江省衢州市上林村,开元寺村和下山溪村进行马尾松毛虫寄生天敌种群数量周年消长的研究,结果表明,一年中,马尾松毛虫卵期天敌寄生率第1代最高,第Ⅱ代次之,第Ⅲ代最低;茧蛹期天敌寄生率第Ⅱ代最高,越冬代次之,第Ⅰ代最低。松毛虫卵期和茧蛹期天敌寄生率随松毛虫虫口密度的增加而上升,但与松毛虫种群的变动趋势有关。松毛虫处于下降阶段,天敌种类多,寄生率高,而松毛虫处于发生初期和上升阶段,天敌种类少,寄生率低。无论是卵期或蛹期的天敲种类和寄生率,上林村明显地比开元寺和下山溪村两地的种类多,寄生率高。卵期优势天敌第Ⅰ代主要是平腹小蜂,第Ⅱ代和第Ⅲ代主要是赤眼蜂和黑卵蜂,茧蛹期优势天敌主要是寄蝇类。溴氰菊脂和苏云金杆菌两种农药对蛹期寄生天敌数量没有显著影响。
From 1984 to 1986, the annual population growth of parasitoid natural enemies of Dendrolimus punctatus in Shanglin village, Kaiyuan temple village and Xia shaxi village of Quzhou City, Zhejiang Province was studied. The results showed that in the first year, , Followed by the second generation and the third generation with the lowest. The parasitism rate of the natural enemies in the pupal stage was the highest in the second generation, followed by the overwintering generation and the lowest in the first generation. The parasitism rate of the pine leafworm eggs and the pupal pupal stage increased with the population density of the pine caterpillars, but was related to the tendency of the population dynamics of the pine caterpillars. Dendrolimus in descending stage, natural enemies and more species, parasitism rate, and Dendrolimus in the initial and rising stage, less natural enemies, low parasitism. No matter the type of egg knocking or parasitism on the days of egg or pupal stage, Shanglin Village obviously has more parasites than the two types of Kaiyuan Temple and Xiaoshanxi Village. The dominant predominant eggs of the first generation of Baphicanthus wasp, the second generation and the third generation are mainly Trichogramma and black eggs, the predominant pupal pupal stage is mainly flies. Two pesticides, deltamethrin and Bacillus thuringiensis, had no significant effect on the number of parasitoids in the pupal stage.