三穗县何首乌种植基地的土壤质量综合评价

摘要

In order to provide a reference for efficient Polygonum production and scientific base selection,the soil quality of Polygonum planting base in Sansui County was comprehensively evaluated. The results showed that the soil fertility indexes of the three bases were respectively 0.52,0.54 and 0.91. fertility grades were medium,medium and high;Nemoro contamination indexes were 0.91,0.88 and 1.11.Base 3 was slightly polluted,base 1 and base 2 were still clean;the ecological hazard indexes were separately 134.16, 145.03 and 159.97,with the hazard rating of slight, slight and medium; the comprehensive indexes of soil quality in base 1~3 were 0.569,0.610 and 0.823,base 3 was of the highest quality.Comprehensively considering soil fertility and pollution status,the comprehensive evaluation results could truly reflect the objective facts.%为给何首乌高效生产及基地科学选址提供依据，采用模糊线性隶属度模型等评价方法，对三穗县何首乌种植基地的土壤质量进行了综合评价。结果表明：3个基地的土壤肥力指数依次为0．52、0．54和0．91，肥力等级分别为中、中和高；土壤重金属内梅罗污染指数依次为0．91、0．88和1．11，显示基地3有轻度污染，基地1～2尚清洁；生态危害指数依次为134．16、145．03和159．97，危害等级分别为轻微、轻微和中等；采用指数乘法将肥力指数和污染指数结合起来进行综合评价，基地1～3的土壤质量综合指数分别为0．569、0．610和0．823，基地3的土壤综合质量最高。将土壤肥力和土壤污染状况综合考虑，得出的综合评价结果更能真实反映客观事实。