陕西关中富硒土壤研究及开发利用——以三原—阎良地区为例

乔新星, 晁旭, 任蕊, 张继军, 胡奎, 李傲瑞, 张志敏

Research, development and utilization of selenium-rich soil of Shaanxi:A case study of Sanyuan-Yanliang area

QIAO Xin-Xing, CHAO Xu, REN Rui, ZHANG Ji-Jun, HU Kui, LI Ao-Rui, ZHANG Zhi-Ming

表2 三原—阎良地区土壤环境质量评价结果

Table 2 Results of soil environmental quality assessment in Sanyuan-Yanliang area

元素 一等(无风险) Ci≤Si 二等(风险可控) Si<Ci≤Gi 三等(风险较高) Ci>Gi 面积/km2 比例/% 面积/km2 比例/% 面积/km2 比例/% Cd 1245.190 99.227 9.582 0.764 0.120 0.010 Hg 1254.892 100 0 0 0 0 As 1254.892 100 0 0 0 0 Pb 1254.892 100 0 0 0 0 Cr 1254.830 99.995 0.062 0.005 0 0 综合等级 1245.128 99.222 9.644 0.769 0.120 0.010