Table 1 Characteristics of soil microbial communities under different treatments.

From: Tillage practices and straw-returning methods affect topsoil bacterial community and organic C under a rice-wheat cropping system in central China

Microbial community

CTNS

CTS

NTNS

NTS

T

S

T × S

Total PLFAs (nmol g−1)

10.93 ± 0.05 d

24.74 ± 0.05 b

15.89 ± 0.06 c

36.14 ± 0.07 a

**

**

**

Bacterial PLFA (nmol g−1)

2.79 ± 0.05 d

8.40 ± 0.09 b

5.12 ± 0.05 c

14.40 ± 0.07 a

**

**

**

Gram-positive bacterial PLFA (nmol g−1)

2.00 ± 0.04 d

5.14 ± 0.09 b

3.37 ± 0.04 c

8.06 ± 0.03 a

**

**

**

Gram-negative bacterial PLFA (nmol g−1)

0.78 ± 0.02 d

3.26 ± 0.00 b

1.75 ± 0.01 c

6.33 ± 0.05 a

**

**

**

G+/G−

2.56 ± 0.04 d

1.58 ± 0.03 b

1.92 ± 0.01 c

1.27 ± 0.01 a

**

**

**

MUFA/STFA

0.04 ± 0.00 d

0.07 ± 0.00 b

0.05 ± 0.00 c

0.09 ± 0.00 a

*

**

*

  1. Different letters denote significant differences among treatments. **P < 0.01; *P < 0.05; ns, not significant. CTNS, conventional intensive tillage with straw removal; CTS, conventional intensive tillage with straw returning; NTNS, no-tillage with straw removal; NTS, no-tillage with straw returning. T, tillage; S, straw; G+/G−, gram-positive bacteria/gram negative bacteria; MUFA/STFA, monounsaturated fatty acids/saturated fatty acids. Values are mean ± standard errors.
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