浙西水田土壤镉形态与有效性研究
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刘道荣, 周漪
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Speciation characteristics and bioavailability of cadmium in paddy soils, western Zhejiang Province
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LIU Dao-Rong, ZHOU Yi
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表1 土壤全量Cd、各形态Cd含量、pH及稻谷Cd含量
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Table 1 The total and fraction Cd content and pH in soil as well as Cd content in rice grains
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指标 | 土壤样品(n=32) | 水稻(n=15) | 总Cd | F1 | F2 | F3 | F4 | F5 | F6 | F7 | pH | 稻谷Cd | 最大值 | 13.0 | 0.091 | 8.200 | 1.980 | 0.800 | 1.730 | 0.640 | 0.610 | 7.66 | 3.513 | 最小值 | 0.23 | 0.001 | 0.047 | 0.006 | 0.025 | 0.025 | 0.022 | 0.015 | 4.58 | 0.016 | 平均值 | 1.71 | 0.013 | 0.705 | 0.292 | 0.163 | 0.245 | 0.107 | 0.101 | 5.37 | 0.740 | 标准偏差 | 2.76 | 0.020 | 1.516 | 0.596 | 0.218 | 0.368 | 0.117 | 0.111 | 0.76 | 1.010 | 变异系数/% | 161.60 | 148.04 | 215.09 | 204.36 | 133.32 | 149.91 | 109.99 | 110.19 | 14.15 | 136.47 |
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