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该文对在2003-2013年间施甸县1 225个土壤样品的9项指标进行了测试分析,并利用模糊数学原理和多元统计方法进行了综合评价。结果表明:全县土壤肥力存在较大差异,甚至有的土壤有机质、碱解氮、速效磷、速效钾、有效硼、有效锌、水溶性氯极度缺乏;全县土壤肥力综合指标值平均为0.623,变幅为0.199~0.928,变异系数为19.74%,其中Ⅰ、Ⅱ、Ⅲ、Ⅳ级土壤所占比例分别为16.08%、54.04%、27.02%、2.86%,水长、仁和的Ⅰ~Ⅲ级土壤达100%。因此,施甸烟区在足量施用有机肥的基础上,控氮,增磷钾,补施氯硼锌,以实现烟区土壤养分平衡。
In this paper, 9 indexes of 1 225 soil samples from Shidian County in 2003-2013 were tested and analyzed, and the comprehensive evaluation was made based on fuzzy mathematics and multivariate statistical methods. The results showed that there were great differences in soil fertility in the whole county, and even some soil organic matter, available nitrogen, available phosphorus, available potassium, available boron, available zinc and water-soluble chlorine were extremely scarce. The average index of soil fertility in this county was 0.623 , Ranging from 0.199 to 0.928, with a coefficient of variation of 19.74%. The proportions of soil types Ⅰ, Ⅱ, Ⅲ and Ⅳ were 16.08%, 54.04%, 27.02% and 2.86% Soil up to 100%. Therefore, on the basis of full application of organic fertilizer, Shi-Dian tobacco-planting areas control nitrogen, increase potassium and potassium, and add chlorine, boron, and zinc to achieve soil nutrient balance in tobacco-growing areas.