摘要
本文在系统分析土壤肥力结构的基础上，运用模糊隶属函数及主成分分析的原理和方法生成了反映水稻土肥力状况的综合肥力指数（ＩＦＩ），以此对江西省临川县４３个水稻土种（属）的肥力状况进行了分析与评价，划分了水稻土的肥力等级，并考察了不同肥力级别水稻土各肥力指标的状况。
On the Basis of the systematic analysis of soil fertility structure, the integrated fertility index(IFI)that reflects the fertility of paddy soil is proposed by using the fuzzy subordinate function and the principal component analysis theories and methods in this paper. In accordance with the values of IFI, the fertility levels of 43 species (genus)of paddy soil in Linchuan County, Jiangxi Province, are analysed and evaluated, the fertility grades of paddy soil are determincd, and the fertility index of each paddy soil of different fertility grades is examined.
出处
《自然资源学报》
CSSCI
CSCD
1994年第4期341-349,共9页
Journal of Natural Resources
关键词
土壤肥力
水稻土
综合肥力指数
模糊隶属函数
paddy soil, integrated fertility index (IFI), red soil region of south China, fuzzy subordinate function, principal component analysis.
