采样尺度和地形因子对土壤养分空间变异规律影响的研究

Research on the Influence of Sampling Scale and Topographic Factors on the Spatial Distribution of Soil Nutrients

由于我国疆域辽阔且地形分布复杂,因此研究土壤养分的空间变化,对精准农业有着重要的意义。本文探索2种采样尺度以及地形因子对土壤养分含量空间分布的影响,通过研究分析,得出在小范围区域内,适当增加采样尺寸,可以减少采样工作量,并准确地预测整个区域的土壤速效钾含量。而在实验研究区域内,对每种养分含量而言,加入地形因子后进行空间插值预测,养分含量分布的结果更为精细。

Due to my country's vast territory and complex terrain distribution,studying the spatial changes of soil nutrients is of great significance to precision agriculture.Explored the effects of two sampling scales and topographical factors on the spatial distribution of soil nutrient content.Through research and analysis,it is concluded that in a small area,appropriately increasing the sampling scale can reduce the sampling workload and accurately predict the soil quick effect of the entire area potassium content.In the experimental study area,for each nutrient content,spatial interpolation prediction is performed after adding topographic factors,and the nutrient content distribution results are more refined.