No

Experimental treatments

Bacterial biomass (×108 cells g−1)

N circulation activity (point)

NH+ 4 oxidation activity (point)

NO− 2 oxidation activity (point)

P circulation activity (point)

1

Natural farming

2.6

22

15

99

10

2

Natural farming

10.0

47

58

52

16

3

Natural farming

7.5

75

82

79

23

4

Organic farming

7.6

100

100

100

40

5

Organic farming

4.5

39

75

40

29

6

Organic farming

12.4

99

100

99

16

7

Hybrid farming

6.6

48

30

89

1

8

Hybrid farming

7.2

30

40

36

16

9

Hybrid farming

4.8

41

23

90

32

10

Conventional farming

1.8

7

10

47

0

11

Conventional farming

3.0

10

6

51

1

12

Conventional farming

5.1

1

4

0

0