Table 5 Physicochemical properties of soils.

From: Study on the dynamics of phosphorus adsorption and the risk of release in black soils by conservation tillage

Treatment

pH

TN g·kg− 1

AN mg·kg− 1

TP g·kg− 1

Olsen-p mg·kg− 1

AK mg·kg− 1

SOM g·kg− 1

Aggregate size(%)

> 2 mm

2–0.25 mm

0.25–0.053 mm

< 0.053 mm

CK

5.29 ± 0.095a

1.25 ± 0.004b

108.53 ± 0.010c

0.139 ± 0.006c

22.289 ± 0.619c

243.85 ± 0.006c

21.55 ± 0.213c

33.24 ± 1.001b

39.54 ± 1.028b

21.05 ± 1.078a

6.17 ± 1.050a

FS

5.03 ± 0.145b

1.28 ± 0.045b

116.91 ± 0.050b

0.156 ± 0.172b

26.135 ± 0.825b

301.20 ± 0.004b

26.59 ± 0.236b

34.86 ± 0.324a

40.46 ± 0.751ab

19.83 ± 1.015ab

4.85 ± 0.547b

GH

4.87 ± 0.040c

1.43 ± 0.037a

123.21 ± 0.010a

0.173 ± 0.008a

32.323 ± 0.512a

435.00 ± 0.007a

28.71 ± 0.610a

35.56 ± 0.394a

41.83 ± 0.452a

18.33 ± 0.328b

4.29 ± 0.029c

  1. For vertical comparisons, different lower case letters indicate significant differences between soils (P < 0.05) and ns indicates no differences (below).
Back to article page