麦红吸浆虫土壤虫态的空间分布型及其抽样技术的研究  

STUDIES ON THE SPATIAL PATTERN AND SAMPLING TECHNIQUES OF WHEAT MIDGE SITODIPLOSIS MOSELLANA IN SOII

作　　者：李青森[1] 刘广瑞[1] 郭贵明[1] 

机构地区：[1]山西省农科院植保所

出　　处：《山西大学学报（自然科学版）》1994年第4期424-427,共4页Journal of Shanxi University(Natural Science Edition)

摘　　要：小麦红吸浆虫的幼虫和圆茧在土壤中均呈聚集分布，前者随虫口密度的增高其聚集强度增强，后者则随虫口密度的增高趋于均匀。应用ＩｗａｏＭ＊－Ｍ回归法求得理论抽样数模型，从而导出在一定置信概率七、允许误差Ｄ和不同虫口密度下的理论抽样数Ｎ。采用Ｉｗａｏ提出的序贯抽样法得到幼虫的序贯抽样型。The spatial pattern of larvae and cocoons of wheat midge Sitodiplosis mosellana wereof an aggregated pattern in soil,with the increase of population density,the patchiness oflarvae was enlarged,but cocoons tended to well-distributed. The models of the optimizationsampling and the sequential sampling were obtained with the model presented by Iwao.

关 键 词：麦红吸浆虫 空间分布型 土壤 

分 类 号：S154.5[农业科学—土壤学]