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通过对太谷地区枣园害虫天敌群落的系统调查,并应用最优分割法。主分量分析法和1维和2维排序法,探讨了引起枣园害虫和天敌群落演替的主要类群及其演变规律.结果表明,群落具有明显的主导因子和时序演替格局,枣园害虫和天敌群落在前3个主分量上的变动较大,且跟随效应明显;枣园害虫和天敌群落的演替在时间过程中明显分为4个阶段:枣树发芽前、枣树展叶开花期、枣树结果期、枣果着色成熟期;利用主分量分析法,明确了主要害虫及其天敌的种类.
Through systematic investigation of natural enemies community of jujube orchards in Taigu area, the optimal segmentation method was applied. Main component analysis and one-dimensional and two-dimensional ordination methods to explore the main groups and their evolution of the succession of jujube pests and their natural enemies community.The results showed that the community has obvious dominant factor and temporal succession pattern, The natural enemy community changed greatly in the first three principal components, and the following effect was obvious. The succession of jujube garden pest and natural enemy community was obviously divided into four stages in time: before jujube emergence, , Jujube fruit period, jujube fruit coloring maturity; the use of principal component analysis, clear the main pests and their natural enemy species.