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Sample | pH | SOM (g/kg) | AN (mg/kg) | AP (mg/kg) | AK (mg/kg) |
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CK | 6.80 ± 0.00a | 39.21 ± 0.71a | 102.63 ± 1.42a | 60.00 ± 1.08a | 178.47 ± 0.31a |
CM | 4.83 ± 0.01b | 20.81 ± 0.48b | 69.99 ± 0.90b | 35.83 ± 0.90b | 169.70 ± 0.34b |
- CK soil from non-continuous crop farmland, CM soil from planting tobacco for 7 years. Data are presented as the mean ± standard error (n = 3), and different letters in the same column indicate significant differences between different treatments (p < 0.01)