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Table 1 Effect of the applications of biochar and biofertilizer on soil biochemical properties

From: Application of cotton straw biochar and compound Bacillus biofertilizer decrease the bioavailability of soil cd through impacting soil bacteria

Cd

(mg·kg-1)

Modifiers(%)

pH

C/N ratio

EC

(ms·cm-1)

H0

T

7.44±0.21 b

10.54±0.39 d

2.08±0.02 h

B

8.49±0.24 a

16.93±0.78 bc

2.88±0.02 ef

J

8.42±0.24 a

18.51±0.53 a

2.41±0.02 g

H1

T

7.23±0.20 b

9.60±0.38 d

3.96±0.03 b

B

8.58±0.25 a

16.41±0.62 c

4.91±0.04 a

J

8.57±0.24 a

17.62±0.48 abc

4.96±0.04 a

H2

T

7.97±0.23 ab

10.55±0.36 d

3.36±0.03 c

B

8.63±0.24 a

16.47±0.54 c

4.88±0.04 a

J

8.45±0.24 a

18.66±0.48 a

4.77±0.04 a

H3

T

7.56±0.21 b

9.57±0.33 d

2.68±0.02 gf

B

8.46±0.21 a

16.92±0.51 bc

3.30±0.03 cd

J

8.57±0.24 a

17.98±0.40 ab

3.03±0.05 de

Regression Analysis

H

ns

ns

ns

BJ

ns

*

ns

BJ*H

ns

*

ns

  1. T, no modifiers; B, 3% biochar was applied; J, 1.5% biofertilizer was applied; H0, no Cd; H1, 1 mg·kg−1 of Cd was applied; H2, 2 mg·kg−1 of Cd was applied; H3, 4 mg·kg−1 of Cd was applied. Different lowercase letters in the same column indicate significant differences (P < 0.05). **, P < 0.01; *, 0.01 < P < 0.05; ns, P ≥ 0.05