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通过对南岳茶场害虫一天敌群落的系统调查,应用群落指数进行多样性、主分量和聚类分析。结果表明:南岳茶场害虫一天敌群落的季节动态明显受到气候条件、茶树生长习性及农事活动的影响。全年大体可分为3个阶段:即10月至翌年3月为群落的越冬期,4～6月为群落的活跃期,7～9月为群落的波动期。由于采取了生态控制措施,全年中群落丰富度、多样性指数和均匀度都较大,害虫优势度指数较小,害虫与天敌之间处于较好的平衡状态。
Based on the systematic investigation of a natural enemy pest community in Nanyue tea plantation, the community index was used for diversity, principal component and cluster analysis. The results showed that the seasonal dynamics of pest - natural enemy community in Nanyue Tea Plantation were significantly affected by climatic conditions, tea tree growth habit and agricultural activities. The whole year can be roughly divided into three stages: the wintering period from October to next March, the active period from April to June and the fluctuation period from July to September. As a result of ecological control measures, the community richness, diversity index and evenness are larger, the pest dominance index is smaller, and pests and natural enemies are in a better balance.