小麦红吸浆虫大尺度空间格局的初步分析  

Geostatistical Analysis on the Spatial Pattern of Large Scale for the Wheat Midge,Sitodiplosis mosellana(Diptera:Cecidomyiidae)

作　　者：夏鹏亮[1,2] 武予清[2] 尚素琴[1] 魏永平[1] 刘顺通 段爱菊 张自启 

机构地区：[1]西北农林科技大学,陕西杨凌712100 [2]河南省农业科学院植物保护研究所,河南郑州450002 [3]洛阳市农业科学研究院,河南洛阳471022

出　　处：《河南农业科学》2010年第4期62-65,共4页Journal of Henan Agricultural Sciences

基　　金：国家现代农业产业技术体系(nycytx-03)

摘　　要：使用地学统计学的方法,对小麦红吸浆虫在较大空间尺度上的分布格局进行分析,建立半变异函数模型,发现其最佳拟合模型为线性有基台模型,模型的空间依赖范围为42.236 8 km,其自相关性和结构特征引起的种群变异为82.62%,说明模型具有较强的空间相关性。由试验结果推断,在小麦红吸浆虫大面积普查中抽样间距应该小于42 km。Geostatistical method was used to analyze spatial pattern in large scale for the orange wheat midge Sitodiplosis mosellana. The semivariogram curve model was established. The results showed that line-model as the best model revealed the correlation distance was 42. 236 8 km, and orphological variations induced by autocorrelation and structure characteristics was 82.62%, indicating strong spatial correlation in the model. The result suggested that the sampling distance should be less than 42 km in the large scale investigation for wheat midge.

关 键 词：小麦红吸浆虫 空间大尺度 地学统计学 半变异函数 

分 类 号：S435.122.1[农业科学—农业昆虫与害虫防治]