论文部分内容阅读
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 principle of spatial interpolation, using the kriging interpolation method in ArcGIS software, the spatial distribution of soil organic matter, available nitrogen, available phosphorus and available potassium in Wenxian County in 2008 was interpolated to obtain the spatial distribution maps of four kinds of soil nutrients. According to the analysis of abundance distribution of soil nutrients in towns and villages, using the grading function of ArcGIS software, according to soil nutrient classification standard of cultivated soil in Gansu Province, the spatial distribution of soil nutrient in cultivated soil in Wen County is organic matter, Nitrogen, phosphorus deficiency.