农业机械学报2013，Vol.44Issue(2)：214-217,231,5.DOI:10.6041/j.issn.1000-1298.2013.02.039
县域尺度玉米产量信息空间变异性研究
Spatial Variability of Corn Yield at County-scale
摘要
Abstract
For analyzing the spatial variability and correlation of corn yield, the combined method of traditional statistical methods and geostatistics methods were compared. Firstly, the reasonable sampling number was sampled and its statistical characteristics were analyzed. The crop yield information was obtained by traditional statistical methods. Then, the spatial variability and correlation of crop yield at county-scale were studied by geostatistics methods. The regional spatial distribution map of crop yield was made by kringing interpolation methods. The results showed that the corn yield and its components had intermediate variability and the coefficient of variability was 10% ~ 100% by traditional statistics. However, the spatial distribution of corn yield was found that it had relatively strong spatial correlation by geostatistics analysis. Further analysis showed that the spatial variability of corn yield was depended on its consistent factors rather than random factors and the spatial heterogeneity scales was about 3 400 m.关键词
玉米产量/克里格插值/相关性分析/空间变异性Key words
Corn yield Kriging interpolation Correlation analysis Spatial variability分类
农业科技引用本文复制引用
何亚娟,潘学标,裴志远,王连林,马志平..县域尺度玉米产量信息空间变异性研究[J].农业机械学报,2013,44(2):214-217,231,5.基金项目
农业部农业信息预警财政专项资助项目(2130111) （2130111）
