水土保持研究2012，Vol.19Issue(3)：48-53,6.
喀斯特地区烟田土壤养分的空间变异特征
Spatial Heterogeneity of Soil Nutrients in Karst Tobacco-growing Areas
摘要
Abstract
In order to provide basis for tobacco balanced fertilization and ecological environment protection in karst areas, the spatial heterogeneity of soil nutrients in karst tobacco-growing areas of Bijie, Guizhou province, was studied by the methods of geostatistics and GIS. Statistic analysis showed each soil nutrient had moderate variation. Spherical model fitted best for total N, total K and available P, linear model fitted best for soil total P and available K, and exponential model fitted best for other variables. By analysis of ratios of nugget to sill, soil available P showed strong spatial autocorrelation fundamentally controlled by structural factors, while other variables showed moderate spatial autocorrelation affected by both structural and random factors. According to the spatial distribution maps of soil nutrients, the distribution of total N, total K, available P and available K was continuous, other than total P, alkaline N, pH and organic matter,which should be due to the complicated site factors in karst areas and human impact.关键词
喀斯特/毕节地区/烟田/土壤养分/空间变异/地统计学/地理信息系统Key words
karst/Bijie region/tobacco growing areas/soil nutrient/spatial variability/geostatistics/GIS分类
农业科技引用本文复制引用
腊贵晓,顾怀胜,刘国顺,李祖良,翟欣..喀斯特地区烟田土壤养分的空间变异特征[J].水土保持研究,2012,19(3):48-53,6.基金项目
国家烟草专卖局重大科技项目“品牌导向的原料体系研究” （）
