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根据2008年广西沙塘林场马尾松毛虫越冬代幼虫虫口密度,采用分布型指数及回归模型法探讨了广西沙塘林场马尾松毛虫越冬代幼虫空间分布格局。结果表明,马尾松毛虫越冬代幼虫呈聚集分布,分布的基本成分为个体群。列出了林间调查最适抽样数及序贯抽样分析表,提出了马尾松毛虫越冬幼虫防治的上下限指标,为害虫综合治理提供了一定的理论依据。
According to the population density of overwintering larvae of Dendrolimus punctatus in ShaTuang Forest Farm in Guangxi in 2008, the spatial distribution pattern of overwintering larvae of Dendrolimus punctatus in ShaTang Forest Farm of ShaTu Forest Farm in Guangxi Province was discussed by means of distributional index and regression model. The results showed that the overwintering larvae of Pinus massoniana were aggregated and distributed, and the basic components were individual groups. The optimal sampling number and sequential sampling analysis table of forest survey were listed. The upper and lower limits of overwintering larvae of Dendrolimus punctatus were proposed, which provided a theoretical basis for the comprehensive management of pests.