农业机械学报2012，Vol.43Issue(11)：51-57,7.DOI:10.6041/j.issn.1000-1298.2012.11.011
盐渍化平原区玉米产量空间变异与地形关系研究
Spatial Variability of Maize Yield and Relations to Terrain Attributes in Salinized Plain Region
摘要
Abstract
Using Yucheng county with soil salinization as a typical area of the north China plain, spatial variability of maize yields was described and influence of the terrain attributes on maize yields were discussed by space interpolation techniques based on measuring maize yields in field and extracting terrain information. The results showed that maize yields gradually increased along the northeast to southwest of the county with increasing the elevation. Although terrain undulated very slightly, the increasing trend of the elevation was agreement with the distribution of yields from low to high. A very significantly positive correlation ( R = 0. 263 , p < 0. 01 ) existed between maize yields and elevation. Meanwhile, a significantly negative correlation ( R = - 0. 245 , p < 0. 05 ) existed between maize yields and plane curvature, indicating that the bigger plane curvature, the easier saline accumulation leading to decreased maize yields. The combined effects of elevation and plane curvature explained 12. 4% of the observed variability of maize yields.关键词
盐渍化土地/玉米产量/地形/空间变异Key words
Salinized land/ Maize yield/ Terrain/ Spatial variability分类
管理科学引用本文复制引用
张晓光,黄标,张贝尔,赵永存,孙维侠,胡文友..盐渍化平原区玉米产量空间变异与地形关系研究[J].农业机械学报,2012,43(11):51-57,7.基金项目
公益性行业(农业)科研专项经费资助项目(200903001-01)和中国科学院知识创新工程重大项目(KSCX1-YW-09-02) （农业）
