Items | n | pH | SOM/% | DOC/mg/g | DON/mg/g | DOC/DON | CEC/cmol kg−1 | TN/% | TC/% | TC/TN |
---|---|---|---|---|---|---|---|---|---|---|
All soils | 59 | 6.52 ± 1.34 | 4.07 ± 1.51 | 0.09 ± 0.09 | 0.02 ± 0.01 | 7.0 ± 3.6 | 28.60 ± 7.42 | 0.19 ± 0.09 | 1.86 ± 1.28 | 11.9 ± 9.2a |
Chernozem soils | 16 | 7.82 ± 0.80a | 6.61 ± 3.38a | 0.16 ± 0.05a | 0.02 ± 0.01a | 7.2 ± 3.3a | 32.12 ± 8.28a | 0.17 ± 0.08a | 1.69 ± 1.26a | 10.8 ± 9.5a |
Natural | 7 | 7.57 ± 0.99 | 9.45 ± 3.18* | 0.18 ± 0.03 | 0.03 ± 0.01 | 5.0 ± 1.7 | 33.96 ± 9.84 | 0.15 ± 0.10* | 1.70 ± 1.92 | 8.4 ± 2.6 |
Cropped | 9 | 8.01 ± 0.62 | 4.40 ± 1.16* | 0.15 ± 0.06 | 0.02 ± 0.01 | 9.8 ± 2.9 | 32.91 ± 8.72 | 0.16 ± 0.05* | 1.67 ± 0.45 | 14.0 ± 14.0 |
Cinnamon soils | 14 | 7.96 ± 0.89a | 3.39 ± 2.50b | 0.11 ± 0.02ab | 0.03 ± 0.01a | 4.6 ± 2.3b | 23.03 ± 8.90b | 0.21 ± 0.07a | 2.71 ± 1.84a | 15.7 ± 14.5a |
Natural | 5 | 8.67 ± 0.43 | 4.03 ± 3.81* | 0.12 ± 0.02 | 0.03 ± 0.01 | 3.9 ± 1.7 | 17.46 ± 9.70* | 0.14 ± 0.06* | 3.63 ± 2.56 | 27.1 ± 19.8 |
Cropped | 9 | 7.56 ± 0.83 | 2.59 ± 1.67* | 0.11 ± 0.02 | 0.02 ± 0.01 | 5.9 ± 2.9 | 21.67 ± 9.01* | 0.29 ± 0.22* | 2.20 ± 1.17 | 9.4 ± 4.5 |
Paddy soils | 18 | 6.71 ± 1.17b | 3.92 ± 1.55b | 0.08 ± 0.08b | 0.01 ± 0.01b | 9.0 ± 2.8a | 25.96 ± 6.93ab | 0.22 ± 0.13a | 2.66 ± 1.76a | 12.2 ± 4.0a |
Red soils | 11 | 6.44 ± 1.49b | 4.06 ± 1.73b | 0.12 ± 0.11ab | 0.02 ± 0.02a | 6.5 ± 4.8a | 27.60 ± 9.60a | 0.16 ± 0.13a | 1.84 ± 1.5a | 8.3 ± 4.1a |
Natural | 4 | 5.01 ± 0.73 | 5.46 ± 1.48* | 0.10 ± 0.10* | 0.03 ± 0.02 | 6.2 ± 5.6 | 26.54 ± 11.85* | 0.08 ± 0.05* | 0.84 ± 0.46 | 9.0 ± 4.4 |
Cropped | 7 | 7.25 ± 1.14 | 3.26 ± 1.54* | 0.13 ± 0.12* | 0.02 ± 0.02 | 7.1 ± 3.6 | 29.44 ± 4.39* | 0.21 ± 0.14* | 2.41 ± 1.68 | 6.9 ± 3.8 |