指标 | 河北省土壤背景值 | 施肥前生菜土 | 作物成熟期生菜土 | 施肥前草莓土 | 作物成熟期草莓土 | ||||
平均值 ± 标准差 | 风险筛 选值 | 平均值 ± 标准差 | 风险筛 选值 | 平均值 ± 标准差 | 风险 筛选值 | 平均值 ± 标准差 | 风险筛 选值 | ||
pH | 6.45 ± 0.01 |
| 7.2 ± 0.03 | - | 6.09 ± 0.01 |
| 7.58 ± 0.01 | - | |
Zn | 78.40 | 79.8 ± 0.02 | 200 | 144 ± 4.24 | 250 | 84.2 ± 0.01 | 200 | 173 ± 2.83 | 300 |
Ni | 30.80 | 35 ± 1.25 | 70 | 26 ± 1.41 | 100 | 21 ± 0.08 | 70 | 21 ± 2.82 | 190 |
As | 13.60 | 2.53 ± 0.02 | 40 | 7.18 ± 0.08 | 30 | 3.56 ± 0.02 | 40 | 6.1 ± 0.21 | 25 |
Cd | 0.09 | 0.11 ± 0.01 | 0.3 | 0.14 ± 0.03 | 0.3 | 0.13 ± 0.01 | 0.3 | 0.28 ± 0.01 | 0.6 |
Pb | 21.50 | 4.2 ± 1.01 | 90 | 30 ± 1.41 | 120 | 4.8 ± 1.43 | 90 | 38 ± 1.41 | 170 |
Cr | 68.30 | 51 ± 1.22 | 150 | 51 ± 1.42 | 200 | 48 ± 0.09 | 150 | 65 ± 0.71 | 250 |
Cu | 21.80 | 36 ± 2.11 | 50 | 33 ± 2.12 | 100 | 30 ± 2.43 | 50 | 31 ± 0.7 | 100 |