Table 1 Soil physicochemical properties under different treatments.

From: Changes in soil microbial community composition and organic carbon fractions in an integrated rice–crayfish farming system in subtropical China

Soil depths

pH

Bulk density (g·cm−3)

Total N (g·kg−1)

Total P (g·kg−1)

Total K (g·kg−1)

C:N ratio

(cm)

MR

CR

MR

CR

MR

CR

MR

CR

MR

CR

MR

CR

0–10

7.17 ± 0.13a

7.29 ± 0.04a

1.09 ± 0.03a

0.90 ± 0.01b

1.94 ± 0.22b

2.52 ± 0.28a

0.41 ± 0.01b

0.45 ± 0.02a

17.30 ± 0.25b

18.17 ± 0.09a

8.09 ± 0.18a

8.35 ± 0.69a

10–20

7.20 ± 0.08a

7.34 ± 0.04a

1.36 ± 0.02a

1.10 ± 0.05b

1.70 ± 0.13b

2.09 ± 0.19a

0.40 ± 0.02a

0.43 ± 0.01a

17.60 ± 0.19b

18.48 ± 0.15a

8.34 ± 0.32a

8.32 ± 1.05a

20–30

7.21 ± 0.11a

7.38 ± 0.06a

1.29 ± 0.03a

1.18 ± 0.11b

1.44 ± 0.12b

1.85 ± 0.18a

0.38 ± 0.02a

0.37 ± 0.05a

17.11 ± 0.34b

18.56 ± 0.20a

7.98 ± 0.37a

8.47 ± 0.52a

30–40

7.31 ± 0.11a

7.45 ± 0.05a

1.28 ± 0.02a

1.16 ± 0.01b

0.94 ± 0.07a

1.13 ± 0.12a

0.34 ± 0.03a

0.34 ± 0.04a

17.27 ± 0.06b

19.01 ± 0.06a

8.17 ± 0.47a

9.02 ± 0.35a

  1. MR, rice monoculture model; CR, Integrated rice–crayfish model. Means with different letters for the same property in the same soil layer indicate significant differences at p < 0.05. Values are means ± standard errors.
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