广西靖西县新甲乡田七土壤肥力及重金属含量的调查与分析

摘要

The fertility and heavy metals (As, Hg, Cr, Pb, Cd) contents in the Panax pseudoginseng-growing soil of Xinjia Town, Jingxi County, Guangxi Province were investigated. The results showed that the organic matter content and available K content in the investigated area reached the grade I and II, respectively, but the available K content in the plot 2 stayed at the grade III; the available N contents in the three plots were al in the grade IV, a deficiency state; the contents of four (As, Hg, Pb, Cd) out of the five kinds of heavy metals did not exceed the relevant standards, but that of Cr reached the slight pol ution state. However, from the per-spective of comprehensive pol ution index, the heavy metal contents in the three plots al exceeded the cordon, and the heavy metals needed to be removed from the P. pseudoginseng-growing soil.%对广西靖西县新甲乡田七土壤肥力及重金属（As、Hg、Cr、Pb、Cd）污染现状进行调查与分析。结果表明，在研究区域范围内，新甲乡田七土壤中有机质和速效钾养分达到 I级、II级，但区域2中速效钾是 III级，但3个区域土壤速效氮均为 IV级，处于缺乏状态。土壤重金属含量除 Cr达到轻微污染外，其他均未超出警戒范围。从综合污染指数结果可知，3个区域土样重金属含量已达到警戒线，土壤污染水平还处于尚清洁。