广西荔浦市土壤—农作物中重金属迁移转化及生态效应

蒋羽雄, 文美兰, 潘启明, 蒋柏昌, 王忠伟

The migration,transformation and ecological effects of heavy metals in soil-cropsystem in Lipu, Guangxi

JIANG Yu-Xiong, WEN Mei-Lan, PAN Qi-Ming, JIANG Bo-Chang, WANG Zhong-Wei

表3 农作物样品重金属元素含量特征值

Table 3 Characteristic values of heavy metal contents in crop samples

元素 均值/10-6 标准差/10-6 变异系数 极小值/10-6 极大值/10-6 中值/10-6 水稻籽实 (n=30) As 0.183 0.153 0.837 0.110 0.950 0.150 Cd 0.138 0.278 2.016 0.006 1.190 0.030 Cr 0.099 0.013 0.127 0.082 0.120 0.095 Hg 0.006 0.008 1.351 0.002 0.043 0.003 Pb 0.057 0.004 0.073 0.050 0.069 0.057 水稻茎叶 (n=10) As 2.655 1.075 0.405 0.590 4.800 2.565 Cd 0.639 0.782 1.224 0.014 2.210 0.209 Cr 4.269 0.598 0.14 3.470 5.040 4.405 Hg 0.009 0.001 0.166 0.007 0.011 0.008 Pb 0.386 0.124 0.322 0.260 7.000 0.350 水稻根 (n=10) As 62.29 40.21 0.646 13.900 140.000 57.650 Cd 1.307 1.413 1.081 0.068 3.410 0.550 Cr 22.18 7.242 0.326 14.300 35.60 20.750 Hg 0.021 0.007 0.336 0.012 0.034 0.023 Pb 5.332 1.846 0.346 2.310 8.190 5.485 荔浦芋 (n=18) As 0.009 0.002 0.176 0.006 0.012 0.008 Cd 0.095 0.061 0.647 0.008 0.185 0.097 Cr 0.030 0.005 0.171 0.017 0.041 0.030 Hg 0.002 0.001 0.423 0.000 0.003 0.002 Pb 0.032 0.015 0.456 0.012 0.062 0.030 柑橘 (n=46) As 0.0076 0.0013 0.166 0.0059 0.0110 0.0076 Cd 0.0011 0.0002 0.183 0.0000 0.0016 0.0011 Cr 0.0239 0.0028 0.119 0.0200 0.0330 0.0230 Hg 0.0002 0.0000 0.219 0.0001 0.0002 0.0002 Pb 0.0121 0.0023 0.186 0.0100 0.0230 0.0120 马蹄 (n=18) As 0.028 0.012 0.426 0.011 0.062 0.028 Cd 0.002 0.002 0.650 0.001 0.006 0.002 Cr 0.017 0.003 0.152 0.014 0.023 0.017 Hg 0.002 0.001 0.339 0.001 0.003 0.002 Pb 0.008 0.003 0.408 0.004 0.013 0.007