土默特左旗农田土壤环境质量综合评价及特色农业开发建议

包凤琴, 成杭新, 永胜, 杨宇亮, 马志超, 赵丽娟

The comprehensive evaluation of farmland soil environmental quality and suggestions on the development of agriculture with distinctive local features in Tumed Left Banner, Inner Mongolia

BAO Feng-Qin, CHENG Hang-Xin, YONG Sheng, YANG Yu-Liang, MA Zhi-Chao, ZHAO Li-Juan

表4 农用地土壤污染风险筛选值

Table 4 Screening value of soil pollution risk for agricultural land

污染物 项目 风险筛选值 pH≤5.5 5.5< pH≤6.5 6.5< pH≤7.5 pH>7.5 w(Cd)/10-9 300 300 300 600 w(Hg)/10-9 1300 1800 2400 3400 w(As)/10-6 40 40 30 25 w(Pb)/10-6 70 90 120 170 w(Cr)/10-6 150 150 200 250 w(Cu)/10-6 50 50 100 100 w(Ni)/10-6 60 70 100 190 w(Zn)/10-6 200 200 250 300