黑龙港平原中南部土壤养分空间变异研究

In order to clarify the spatial variation characteristics of soil nutrients in the south-central plain of Heilonggang, scientific basis was provided for the promotion of reasonable and effective soil fertilization and precision agriculture in this area. In this paper, the spatial variation characteristics of soil nutrients in this area were obtained by descriptive statistical analysis and Kriging interpolation analysis of sample data. The results showed that the soil nutrients were all of medium variation. The organic matter, available potassium and slow available potassium had strong spatial autocorrelation. Soil nutrients were distributed relatively low in the middle and relatively high in the surrounding area. The content of potassium was in the middle and high levels, and the content of other nutrients was in the middle and low levels. The distribution of nutrients was more balanced, indicating the interaction and influence among soil nutrient contents. In addition, there are low level soil nutrients in this area, so the combination of planting and cultivation should be emphasized in daily land management.