文县耕层土壤养分空间分布研究

Study on the Spatial Distribution of Arable Laye Soil Nutrient in Wenxian

根据空间插值的基本原理,使用Arcgis软件中kriging插值法,对2008年文县耕层土壤有机质、碱解氮、有效磷和速效钾实测数据进行空间插值,得到4种土壤养分的空间分布图。根据对各乡镇土壤养分丰缺分布状况的分析,使用Arcgis软件的分级功能,按照甘肃省耕层土壤养分分级标准,得出文县耕层土壤养分的空间分布为有机质、速效钾含量丰富,碱解氮、有效磷缺乏。

According to the basic principles of spatial interpolation, and the kriging interpolation Law of Arcgis software, analyzing the spatial interpolation on soil organic matter, nitrogen, available phosphorus and available potassium measured data in 2008, then obtaining the spatial distribution of the four kinds of soil nutrients. In the light of the analysis of the township soil nutrients distribution, using the classification function of Arcgis software, and The Gansu Province Soil Nutrient grading standards, finally drawing the conclusion that the spatial distribution of Wenxian soil nutrients was the contents of organic matter and available potassium are rich, but this area was lack of alkaline hydrolysis nitrogen and available phosphorus.