棉蚜空间格局参数特征及其应用

The Characteristics and Application of the Spatical Parameters of Cotton Aphid

应用聚集度指数测定了棉蚜的空间格局 ,分析了平均密度 x与 m ,S2 ,K值 , L ,λ的关系。结果表明 ,棉蚜的空间格局为具有公共Kc值的负二项分布。

The spatial distribution pattern of cotton aphid in cotton field had been analyzed with aggregation indices.The relation between mean density and ,S 2,K value ,λ were also analyzed.The results showed that the spatial distribution was the negative binomial with common value k c.And the reasons of aggregation were probed.