Skip to main content

Table 2 Changes in microbial diversity after the applications of biochar and biofertilizer

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

(%)

Diversity index of soil microbial community

Simpson

Chao1

Coverage

H0

T

0.0070±0.0002 f

1801±51.99 e

0.9853±0.028 a

B

0.0117±0.0003 c

2165±62.48 bcd

0.9819±0.028 a

J

0.0095±0.0003 d

2119±61.17 cd

0.9820±0.028 a

H1

T

0.0059±0.0002 g

1964±56.69 de

0.9835±0.028 a

B

0.0070±0.0002 f

2030±58.61 d

0.9841±0.028 a

J

0.0128±0.0004 b

2397±69.22 a

0.9809±0.028 a

H2

T

0.0057±0.0002 g

2083±60.13 cd

0.9824±0.028 a

B

0.0095±0.0005 d

2453±70.81 a

0.9800±0.028 a

J

0.0086±0.0004 de

2277±65.74 abc

0.9799±0.028 a

H3

T

0.0078±0.0004 ef

2333±67.36 ab

0.9797±0.028 a

B

0.0090±0.0003 d

2251±64.99 abc

0.9811±0.028 a

J

0.0315±0.0009 a

2251±64.98 abc

0.9806±0.028 a

Regression Analysis

H

ns

*

**

BJ

ns

*

**

BJ*H

ns

*

**

  1. T, no application of modifiers; B, 3% biochar was applied; J, 1.5% biofertilizer was applied; H0, no application of 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) in Cd content. **, P < 0.01; *, 0.01 < P < 0.05; ns, P ≥ 0.05