Table 1 Physical and chemical properties of the trial field.

From: Effect of Nitrate Leaching Caused by Swine Manure Application in Fields of the Yellow River Irrigation Zone of Ningxia, China

Soil depth (cm)

Bulk density (g cm−3)

SOM (g kg−1)

TN (g kg−1)

TP (g kg−1)

Soil available nutrients (mg kg−1)

Soil salt

pH

N

P

K

NO3 −N

NH4 +−N

00–30

1.49

13.78

0.87

0.80

93.43

27.34

145.87

10.21

0.98

1.13

8.59

30–60

1.58

7.33

0.75

0.78

63.76

14.89

137.10

6.97

0.96

0.91

8.76

60–90

1.43

4.14

0.49

0.50

34.17

4.42

98.25

6.23

0.93

0.74

9.21

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