Table 3 The colloidal P content (mg kg⁻¹) of different-sized soil aggregates and the contribution rate of aggregates to colloidal P (CR) in the total 15 soils

14.04a

1.25b

2.05d

11.35a

2.28d

3.00a

6.10a

11.01b

9.87c

1.48b

1.78c

1.00d

5.89c

10.24b

16.35a

15.55a

1.55a

7.22a

11.33a

6.25a

2.2b

8.98a

17.11a

23.63ab

1.27bc

3.85b

2.87b

5.31c

12.70a

12.50b

6.88b

1.78a

7.10a

9.07b

4.48c

2.14c

8.82b

11.21b

22.68b

3.45a

1.57c

2.11c

17.83a

13.8a

10.17c

1.67c

0.86c

5.27b

5.55c

5.60b

3.45a

3.58c

5.55c

12.3c

1.00c

7.60a

4.50a

7.69b

10.22ab

15.24a

4.46c

2.17c

1.52d

4.10c

0.83c

4.43d

5.37b

4.78d

3.86d

3.18d

4.39b

2.58d

3.96c

6.25d

11.33a

10.75b

11.72a

7.03c

11.02b

5.05b

5.88c

10.29a

12.30a

5.39c

4.51c

6.18a

5.64b

4.51b

7.61c

5.51c

9.47b

12.86a

10.27b

10.17b

14.37a

7.98b

9.66a

7.41c

10.38a

5.82b

2.04c

4.17c

9.34a

9.81b

2.69d

26.14a

11.28a

15.92a

20.79a

15.06a

19.87a

4.43b

9.11b

9.21a

8.04a

4.07b

8.80a

8.32a

10.37a

7.11b