小麦红吸浆虫大尺度空间格局的初步分析.pdfVIP

2010 年第 4 期 小麦红吸浆虫大尺度空间格局的初步分析 夏鹏亮i ， 2 ，武于清2\ 尚素琴l ，魏永平1 ，刘顺通3 ，段爱菊3 ，张自启3 (1.西北农林科技大学，陕~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，同南洛阳 471022) 摘要t 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，皮现其最佳拟合模型为线性有基台模型，模型的空间依赖范周为 42. 2368km，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*大面积普查中抽样间跟应该小于 42kmò 关键词:小麦红吸隶*;空间大尺度;地学统计学;半变异函数 中国分棠号: 8435. 122. 1 文献标识码:A 文章编号: 1004 - 3268(2010)04 - 0062 - 04 Geostatistical Analysis on the Spatial Pattern of Large Scale for the Wheat Midge ,Sitodiρlosis mosellana (Diptera: Cecidomyiidae) XIA Peng-liang1 2 ,WU Yu-qingZ* , SHANG Su-qin1 , WEI Yong-ping 1 , • 3 3 LIU Shun-tong ,DUAN Ai-ju ,ZHANG Zi-qj3 (1. Northwest A . F University. Yangling 712100.China; 2. Henan Academy of Agricultural Sciences.Zhengzhou 450002.China; 3. The Municipal Scientiíic Research Institute of Luoyang.Luoyang 471022 ,China) Abstract: 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 re- sults showed that lineωmodel as the best model revealed the correlation dístance was 42. 2368 km , and orphological variations induced by autocorrelation and structure characteristics was 82.62% , indicating strong spatial correlation in the mode l. The result suggested that the sampling distance should be less than 42 km in the large scale investigation for wheat midge. K