Sample sites

Soil

layers

pH

OM

(%)

${\text{NO}}_3^{-}$ -N

${\text{NH}}_4^{+}$ -N

NH₄Ac-K

Olsen-P

EC

CEC

(mg∙kg⁻¹)

(mg∙kg⁻¹)

(mg∙kg⁻¹)

(mg∙kg⁻¹)

(mS∙cm⁻¹)

Me/100g

Xiwang

T

S

7.04

7.13

3.14

1.28

59.80

52.10

65.8

58.8

292.8

264.1

91.8

69.2

65.5

61.0

30.7

24.2

Wenchang

T

S

7.42

7.55

2.34

1.50

690.7

541.9

102.0

90.2

260.0

197.6

92.9

87.2

63.9

60.5

26.6

15.9

Fanyao

T

S

7.32

7.36

1.51

1.24

783.2

731.1

47.5

44.8

191.2

166.2

78.1

50.8

58.4

56.6

25.6

15.7

Sanyuan

T

S

7.02

7.19

2.90

1.89

787.3

738.6

280.2

163.6

465.8

399.3

134.2

109.7

99.5

86.5

34.7

24.9

Dongzhang

T

S

7.35

7.56

1.58

1.34

199.5

154.9

191.1

153.3

394.7

232.2

62.8

29.8

57.9

52.6

26.5

21.5

Nanzhuang

T

S

7.39

7.59

2.08

1.35

138.2

97.9

111.8

103.1

185.8

112.5

82.5

53.6

52.8

47.2

27.9

22.9

Dongbai

T

S

7.11

7.38

2.80

2.18

331.9

249.1

118.3

79.91

332.4

281.4

120.5

115.3

93.9

89.4

30.9

26.79