毛乌素沙地土壤养分空间变异性初步研究

Research on Spatial Variability of Soil Nutrients In the Mu Us Sandland

以乌审旗毛乌素沙地为研究区,以0~40 cm土壤全氮、速效磷、速效钾为研究对象,结合传统的经典概率统计理论和地质统计学理论对其进行全面研究,分析了三种土壤养分的空间分布特征,绘制了三种土壤养分的变异函数图以及空间分布图,从而得出该地三种土壤养分的空间分布规律。分析表明：该地土壤全氮、速效磷、速效钾养分的含量均极少,属于六级,土壤较贫瘠。通过对研究区土壤的采样分析,了解了研究区土壤养分的分布状况和空间变异情况,为促进和提高毛乌素沙地农业生产实践提供理论依据,为精确指导农业生产提供科学依据。

In this paper,the data of the soil total N,P and K used in this study are collected from the Wushen Mu Us Desert in the 0~40 cm of the soil,on the basis the traditional classical theory of probability and statistical theory,and three kinds of spatial distribution of soil nutrients are shown,the maps of variogram and spatial distribution of the three soil distribution regular patterns of soil nutrients are drawn.Nutrients are analyzed,which comes in three kinds of spatial distribution,the content of the soil total N,P and K are very small,they belong to six,relatively poor soil nutrients.By sampling and analyzing the soil,we conclude that the distribution and spatial variation of the soil nutrients in the research area,for the promotion and increase in the Mu Us Sandland of agricultural production,it serves as a theoretical and scientific reference for the accurate guidance of agricultural production.