浏阳植烟土壤肥力状况的综合评价

Comprehensive Evaluation of Soil Fertility in Liuyang Tobacco-Growing Areas

利用模糊数学原理和多元统计分析方法,对浏阳植烟土壤肥力状况进行了综合评价.结果表明,浏阳烟区土壤肥力存在着广泛的变异,属于I级和IV级土壤肥力的面积均较小,分别占该烟区总面积的0.65%,1.67%;属于II级和III级土壤肥力的面积均较大,分别占总面积的48.23%和49.45%.占浏阳烟区总面积70.88%的5种主要植烟土壤类型相比较,土壤肥力综合指数(IFI)高低依次表现为:红黄泥田>青泥田>黄泥田>沙泥田>黄沙泥田.

Based on methods of multivariate statistical analysis and principles of fuzzy mathematics, the comprehensive evaluation of soil fertility of Liuyang tobacco-growing areas was conducted. The results indicated that there existed significant variation for the soil fertility of Liuyang tobacco-growing areas. The areas of grade Ⅰ and grade Ⅳ are both smaller, accounting for 0.65 % and 1.67 % of the total Liuyang tobaccogrowing areas, respectively ; the areas of grade Ⅱ and grade Ⅲ are both larger, accounting for 48.23 % and 49.45% of the total tobacco-growing areas, respectively. Comparison among five main soil types whose areas accounted for 70.88 % of the total Liuyang tobacco-growing areas showed that the integrated fertility index （IFI） was in the order of red yellow mud field 〉 blue mud field 〉 yellow mud field 〉 sand mud field 〉 yellow sand mud field.