海南省暗红湿润铁铝胶园土壤肥力综合评价及其变化初探

An Integrated Evaluation of Soil Fertility in Dark Red Humid Ferralsol for Rubber Plantation and Initial Probe of Its Change in Hainan Province

对海南省暗红湿润铁铝胶园地的土壤肥力进行了评价分析,评价结果表明,海南省暗红湿润铁铝胶园的土壤综合肥力普遍较低,综合评价指标值介于0.23～0.50之间。不同割龄湿润铁铝胶园土壤综合评价指标平均值都低于0.4,等级都为低。同纬度地区的土壤综合评价指标值介于0.23～0.35之间,除文昌外从西向东升高;同经度地区的土壤综合评价指标值介于0.23～0.50之间,除海口外从南向北升高。

This paper evaluates the soil fertility of dark red humid ferralsol for rubber plantation in Hainan province. The evaluating results indicate the soil fertility of dark red humid ferralsol for rubber plantation is generally low and the integrated evaluation index is from 0.23 to 0.50. The average integrated evaluation indexes of soil fertility in different tapping years are all under 0.4 and the grades are all low. In the same latitude, east is above the west except WenChang, the integrated evaluation index of soil fertility is from 0.23 to 0.35; In the same longitude, north is above the south except HaiKou, the integrated evaluation index of soil fertility is from 0.23 to 0.50.