临猗县耕地有机质与大量元素的空间变异

根据临猗县实地采集的土壤样品,应用GS+软件对该地区土壤养分的空间变异特征进行研究,采用地统计学方法分析了土壤有机质与大量元素的空间变异。结果表明:土壤有机质、全氮的变异程度较小,速效钾次之,变异最大的是有效磷,各养分的变异都属于中等变异;土壤有机质、全氮和速效钾的空间变异主要是由区域因素引起,空间分布体现为中等空间相关性;有效磷的空间变异受随机因素影响较大,空间分布体现为弱空间相关性。

Spatial Variability of the Farmland Organic Matters and Macroelements in Linyi County

Based on the soil sample of the Linyi county and GS+ software,the spatial variation characteristics of the soil nutrients were studied.The geographical statistical method was carried on the analysis to spatial variation of the soil organic matters and macroelements.Result indicated that the soil organic matters and total nitrogen had small variation degree,the rapidly available potassium taking the second place,the available phosphorus showing the biggest variation,they all belonged to the medium variation;The spatial variation of the soil organic matter,total nitrogen and rapidly available potassium mainly caused by the area factor,and the spatial distribution manifests for the medium spatial relativity.The spatial variation of the available phosphorus fiercely caused by the stochastic factor,and spatial distribution manifests for the weak spatial relativity.