应用灰色关联分析对银南灌区土壤肥力的综合评价  

Application of Grey Relational Analysis to Comprehensive Evaluation of Soil Fertility in Irrigation Area on the South of Yinchuan

作　　者：何文寿[1] 毕红[2] 

机构地区：[1]宁夏农学院银川 [2]永宁县政府

出　　处：《宁夏农林科技》1997年第2期7-10,共4页Journal of Ningxia Agriculture and Forestry Science and Technology

摘　　要：应用灰色关联分析方法对宁夏引黄灌区土壤肥力状况进行了综合评价。结果表明，灰色关联分析是综合评价土壤肥力状况及肥力等级划分的一种有效方法。供试土壤的肥力水平依关联度大小划分为５级。A comprehensive evaluation of the soil fertility in the irrigation area on the south of Yinchuan was conducted using the relational grade analysis of the grey system theory.The results show that this new method is an effective one which can be used for comprehensively evaluating the level of soil fertility and establishing soil fertility grades.Based on the value of the grey relational grade the fertility types of the soil used in this experiment were divided into five grades as very high,high,medium,low and very low.The contributions of the fertility factors to soil fertility were in order:soil organic matter>total N >olsen P>alkali hydrolysis N.

关 键 词：土壤肥力 灰色磁联分析 综合评价 银南灌区 

分 类 号：S158.3[农业科学—土壤学]