Table 1 Effect of soil conditioners on the contribution of soil organic carbon and total nitrogen (%).
From: Mechanisms of carbon and nitrogen distribution in soil aggregates in response to soil conditioners
Years | Item | Treatment | Aggregate size(mm) | ||
|---|---|---|---|---|---|
< 0.053 mm | 0.053–0.25 mm | > 0.25 mm | |||
2021 | Organic C | CK | 18.78 ± 0.82 a | 68.23 ± 1.29 b | 16.09 ± 0.21 d |
Om-20% | 14.14 ± 0.77 bc | 62.81 ± 2.62 c | 19.56 ± 0.78 ab | ||
Om-30% | 14.27 ± 0.54 bc | 55.84 ± 0.83 d | 18.45 ± 0.17 ab | ||
Om-45% | 15.37 ± 0.73 b | 72.26 ± 1.79 a | 18.30 ± 0.57 bc | ||
Om-40% | 15.16 ± 1.04 bc | 59.02 ± 3.64 d | 18.01 ± 0.95 bc | ||
Hu-20% | 12.72 ± 1.35 d | 49.21 ± 1.90 e | 17.09 ± 2.05 cd | ||
Am-25% | 13.62 ± 0.64 cd | 58.18 ± 1.47 d | 20.16 ± 0.77 a | ||
Total N | CK | 18.02 ± 0.63 a | 70.34 ± 1.77 a | 14.33 ± 0.71 d | |
Om-20% | 13.41 ± 0.42 c | 66.12 ± 1.91 b | 17.24 ± 0.84 ab | ||
Om-30% | 13.39 ± 0.76 c | 64.49 ± 1.89 bc | 16.22 ± 0.34 bc | ||
Om-45% | 14.74 ± 0.50 b | 66.27 ± 1.55 b | 16.12 ± 0.18 bc | ||
Om-40% | 13.94 ± 0.59 bc | 62.71 ± 0.35 c | 15.27 ± 0.28 cd | ||
Hu-20% | 13.19 ± 0.43 c | 66.74 ± 2.22 b | 16.79 ± 0.89 ab | ||
Am-25% | 13.25 ± 0.31 c | 66.58 ± 1.31 b | 17.62 ± 0.97 a | ||
2022 | Organic C | CK | 18.26 ± 0.83 a | 64.86 ± 1.83 a | 14.39 ± 0.27 b |
Om-20% | 12.92 ± 0.83 b | 62.70 ± 4.43 a | 15.99 ± 0.24 a | ||
Om-30% | 12.96 ± 0.78 b | 64.02 ± 0.86 a | 16.89 ± 0.42 a | ||
Om-45% | 16.83 ± 1.76 a | 63.12 ± 3.27 a | 14.40 ± 1.47 b | ||
Om-40% | 13.75 ± 0.36 b | 60.81 ± 0.76 a | 16.80 ± 0.86 a | ||
Hu-20% | 13.09 ± 1.17 b | 64.46 ± 2.39 a | 16.38 ± 0.51 a | ||
Am-25% | 12.32 ± 0.73 b | 65.59 ± 1.29 a | 17.56 ± 1.12 a | ||
Total N | CK | 17.33 ± 0.61 a | 65.19 ± 2.35 b | 12.71 ± 0.60 b | |
Om-20% | 13.43 ± 0.73 b | 67.96 ± 2.22 ab | 16.88 ± 0.49 a | ||
Om-30% | 13.49 ± 0.91 b | 69.69 ± 0.84 a | 16.53 ± 0.10 a | ||
Om-45% | 17.02 ± 2.29 a | 67.04 ± 1.40 ab | 13.98 ± 1.02 b | ||
Om-40% | 14.27 ± 0.47 b | 70.58 ± 4.45 a | 17.29 ± 1.11 a | ||
Hu-20% | 13.62 ± 1.12 b | 67.49 ± 0.42 ab | 16.52 ± 0.69 a | ||
Am-25% | 12.95 ± 0.72 b | 70.33 ± 1.15 a | 17.72 ± 1.09 a | ||
