摘要
利用奉新县水田土壤1985年的土壤普查数据和2006年耕地地力调查数据,选取了水田土壤有机质、全氮、有效磷和速效钾4个养分因子,在SPSS统计软件对其统计特征分析的基础上,运用地统计软件GS+7.0进行半方差分析,最后在利用ArcGIS软件的空间插值和空间叠加功能对土壤养分变化的进行分析。结果表明:由于土地利用、管理方式以及耕作方式等改变促进奉新县水田土壤养分整体上有较大提高。
The area of this study were paddy soil in Fengxin county, the four nutrient factors ,（organic matter , total nitrogen, available phosphorus and potassium ）of soil survey data of 1985 and cultivated land productivity survey data of 2006 were choosed. The statistical eigenvalues were analyzed by Spss software , the semi-variagram were analyzed by GS plus 7.0 software, the spatial change were analyzed by Arcgis software . The results showed that the nutrient increased。 The land use type, management and cultivation fashion were the main driving factor for the changes in Fengxin county.
出处
《天津农业科学》
CAS
2010年第6期85-92,共8页
Tianjin Agricultural Sciences
基金
国家自然科学基金项目(30760048)
中科院知识创新重大项目(KSCX1-YW-09-08)
关键词
水田
土壤养分
时空变异
paddy
soil nutrient
dpatio-temporal change
