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