安徽农业科学2012，Vol.40Issue(26)：12843-12844,12851,3.
基于地统计学的苏北县域土壤全氮空间变异研究
Spatial Variability of Soil Total Nitrogen in County Region of North Jiangsu Based on Geostatistics
摘要
Abstract
With Peixian County as the study area, the spatial variability of soil total nitrogen was studied by the geostatistics method on the basis of 212 soil samples, which were collected with regular grids through the county. The results showed that the mean value of soil total nitrogen content (0.96 g/kg) belongs to lower-middle level. The variation coefficient is 0. 31, and belongs to the medium level of variability. The auto-correlation distance of soil organic matter is 14 250 m. Moreover, the content of soil total nitrogen is mainly concentrated in the two grades of 0.75 -1.00 and 1.00 - 1.25 g/kg. In terms of spatial distribution, the lower content of soil total nitrogen mainly distributes in the north and south parts of Peixian County, where the dry land is dominated. Conversely, the highly content mainly distributes in the areas near Weishan Lake or Dasha River, where the paddy rice-upland crop rotation is dominant. The results show the different promotion potential of soil total nitrogen in different parts of the county, and will provide references for making agricultural management measures in Peixian County and even other areas in North Jiangsu.关键词
土壤全氮/空间变异/地统计学/江苏沛县Key words
Soil total nitrogen/Spatial variability/Geostatistics/Peixian County in Jiangsu Province分类
农业科技引用本文复制引用
张忠启,李保杰,于法展,吴金龙..基于地统计学的苏北县域土壤全氮空间变异研究[J].安徽农业科学,2012,40(26):12843-12844,12851,3.基金项目
江苏师范大学自然科学研究基金项目(10XLR28) （10XLR28）
徐州市科技计划项目(XZZD1201). （XZZD1201）
