小麦吸浆虫空间格局参数及其应用

The spatial distribution parameters of wheat midge Sitodiplosis mosellana (Gehin) in wheat fields and their application

本文应用聚集度指数、分析表明了小麦吸浆虫在麦田中的空间格局呈负二项分布，并探讨了吸浆虫在田间的聚集原因以及小麦吸浆虫穗虫平均密度（ｘ）与负二项分布公共ｋｃ值的关系。

The spatial distribution pattern of wheat midge, Sitodiplosis mosellana (Gehin), in wheat fields has been analysed with five aggregation indices, demonstrate the negative binomial distribution in the spatial distribution pattern of wheat badge.The relationship between mean density x and common value k. of negative binomical distribution and the reason for wheat midge agregation are also analysed.