Analysis on Grey Correlation between Soil pH Value and Soil Nutrients

Soil nutrient is necessary for plant growth and development, Its effectiveness is directly related with plant growth, soil fertility and soil productivity. Soil p H has a great influence on the effectiveness of the nutrients. In order to study their correlation, this research collected soil samples from four villages in Datong District, Daqing, and then standardized the analysis data. The relationships between soil p H value and soil nutrients were analyzed using the method of grey correlation. Soil p H value and available N showed the largest gray correlation value, 0.928. This result suggested that positive measures should be taken to improve soil p H value, reasonably apply nitrogen fertilizer, in order to promote crop development.