土层Soil layer (cm) | 不同年限退耕地含水量Water content of reclaimed farmland in different years (%) | ||||||||
1 a | 2 a | 3 a | 4 a | 5 a | 8 a | 15 a | 24 a | 31 a | |
0~10 | 5.85 ± 0.12b | 5.66 ± 0.12b | 2.90 ± 0.16d | 1.32 ± 0.04e | 2.92 ± 0.06ad | 7.26 ± 0.05a | 3.90 ± 0.29c | 1.63 ± 0.02e | 3.28 ± 0.24d |
10~20 | 7.75 ± 0.11c | 7.45 ± 0.10d | 6.51 ± 0.07e | 3.65 ± 0.03g | 6.53 ± 0.19e | 9.61 ± 0.09a | 7.23 ± 0.06d | 4.92 ± 0.08f | 8.09 ± 0.10b |
20~30 | 6.52 ± 0.24c | 8.00 ± 0.04b | 6.74 ± 0.03c | 3.28 ± 0.21e | 6.87 ± 0.05c | 9.19 ± 0.33a | 8.12 ± 0.07b | 5.03 ± 0.05d | 8.25 ± 0.07b |
30~40 | 10.05 ± 1.84a | 9.02 ± 0.06a | 6.94 ± 0.06bc | 2.97 ± 0.41d | 6.37 ± 0.06bc | 10.00 ± 0.19a | 9.30 ± 0.05a | 5.11 ± 0.03c | 8.27 ± 0.01ab |