Abstract:

In order to reveal nutrient fertility characteristics in cinnamon soil in eastern Hebei Province and guide scientific management of soil nutrient resources and rational fertilization, field typical samples investigation combination with indoor analysis research methods, principal components analysis and cluster analysis were applied in this paper to study the comprehensive evaluation index and management countermeasures of nutrient resource in cinnamon soil. The results showed that: cinnamon soil nutrient resources could use nitrogen nutrient supply strength and biological activities, soil potassium potential, soil organic matter accumulation strength as the main body of the comprehensive index to evaluate. The characteristics of the nutrient resources totally showed that, organic carbon, total nitrogen content was low, long-term potassium supply potential declined, while total phosphorus and effective phosphorus content was high. Fertilization and fertility management should first pay attention to organic fertilizer (material) to keep and improve soil organic carbon and total nitrogen level, next to enhance soil potassium potential. Chemical fertilizer application was suitable for N, K, P in order. Dynamic clustering analysis showed that, nutrients fertility levels of cinnamon soil could be divided into 5 kinds, in the production practice should be based on the characteristics of all kinds of fertility, formulated target-oriented soil nutrient fertility management plan, in order to use nutrient resources efficiently.