Table 1. Soil physicochemical properties in different stand ages of P. elliottii plantations.
| Stand ages | Ph | TOC/ (g·kg-1) | TN/ (g·kg-1) | AN/ (mg·kg-1) | TP/ (g·kg-1) | AP/ (mg·kg-1) | TK/ (mg·kg-1) | AK/ (mg·kg-1) | C/N |
|---|---|---|---|---|---|---|---|---|---|
| 3 | 6.36a | 21.86a | 1.12a | 38.22a | 0.56a | 3.76a | 23.99a | 109.11a | 19.51d |
| 10 | 6.01b | 19.54b | 0.95b | 34.09b | 0.53a | 3.05b | 20.06b | 89.17c | 20.56c |
| 18 | 5.82c | 17.37c | 0.81c | 27.84c | 0.41b | 2.67c | 19.97c | 96.24b | 21.44b |
| 25 | 5.78c | 16.28d | 0.75c | 19.96d | 0.33c | 1.98d | 13.96d | 76.08d | 21.70a |
Note: Values within a column followed by the same letter are not significantly different at P<0.05. The same is true in subsequent table columns.