土层深度(cm)

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

保水剂

13.82a

14.33a

13.91a

13.57a

12.89b

12.32b

12.21ab

10.5c

10.04bc

8.78c

7.81c

6.89c

6.61c

6.42c

6.37c

树枝覆盖

13.68a

13.81b

13.22bc

13.12b

12.53c

12.25ab

12.45a

11.52b

10.83ab

10.38b

9.31b

7.89b

6.67c

6.45c

6.39c

聚水沟

13.21b

13.73b

13.47b

13.45a

13.23a

12.95a

12.62a

12.12a

11.53a

11.35a

11.23a

10.84a

10.34b

9.87b

9.82b

对照

12.12c

12.29d

12.18d

11.87c

11.78d

11.67c

11.15b

10.24c

9.72c

8.86c

7.79c

6.89c

6.63c

6.41c

6.38c

坡地农田

13.12b

13.15c

13.12c

13.11b

12.82b

12.81a

12.5a

11.68b

11.32a

11.31a

11.25a

10.99a

10.97a

11.01a

11.04a