鄂西北丹江口库区柑橘产业土壤肥力综合评价

Comprehensive Evaluation of Soil Fertility of Orange Industry in Danjiangkou Reservoir Area of Northwestern Hubei

对湖北省丹江口库区柑橘产业土壤肥力进行了评价。选取pH值、有机质、全氮、碱解氮、全磷、速效磷、速效钾等肥力因子,再将各属性值分级标准化,采用修正的内梅罗指数对各地块进行土壤肥力综合评价。结果显示:柑橘产业土壤生产力质量指数属肥力一般水平,碱解氮和有机质为主要限制性因子。

The soil fertility of orange industry in Danjiangkou Reservoir Area of Hubei Province was evaluated. A series of fertility factors such as pH value, organic matter, total N, alkali solution nitrogen, total P, available P and available K was selected and standardized with grades by each attribute value. The modified Revised Nemoro index was used to make a comprehensive evaluation on soil fertility. The results showed that soil productivity quality index of orange industry in Danjiangkou Reservoir Area reached the general level, and the alkali solution nitrogen and organic matter were the main restrictive factors.