Table 1.
Results of three-way analysis of variance (ANOVA) for the effects of N addition dosage (D), N compounds type (T), species (S) and their interactions on plant nutrient contents and the statuses of nutrient resorption efficiency.
| Parameters | S | D | T | S*D | S*T | D*T | S*D*T |
|---|---|---|---|---|---|---|---|
| LNg | 574.08*** | 31.453*** | 2.587 | 0.584 | 0.106 | 1.229 | 0.87 |
| SNg | 151.85*** | 11.913*** | 4.753* | 1.481*** | 0.511 | 0.470 | 0.206 |
| LNs | 1.406 | 7.490*** | 2.635 | 6.058 | 0.496 | 1.070 | 0.781 |
| SNs | 1028.2*** | 5.388*** | 2.856 | 1.568 | 0.128 | 0.707 | 1.398 |
| LPg | 201.72*** | 2.318* | 2.440 | 3.120* | 0.682 | 2.025 | 1.933 |
| SPg | 29.200*** | 3.056* | 3.631* | 0.850 | 0.559 | 0.287 | 0.265 |
| LPs | 30.072*** | 0.398 | 0.054 | 1.113 | 0.184 | 0.723 | 0.348 |
| SPs | 37.945*** | 0.684 | 0.131 | 0.383 | 1.010 | 0.299 | 0.39 |
| LNRE | 94.683*** | 1.071 | 0.538 | 2.468* | 0.169 | 0.546 | 0.414 |
| SNRE | 42.233*** | 3.464** | 0.679 | 1.288 | 0.145 | 0.354 | 1.03 |
| LPRE | 45.788*** | 1.811 | 0.926 | 0.683 | 0.140 | 0.528 | 0.426 |
| SPRE | 0.052 | 0.877 | 2.822 | 0.859 | 0.058 | 0.557 | 0.301 |
Asterisks denote significant levels: ns, P > 0.05; *, P< 0.05; **, P< 0.01; and ***, P< 0.001, respectively. n = 8. LNg indicates green leaf nitrogen, LNs indicates senescent leaf nitrogen, LPg indicates green leaf phosphorus, LPs indicates senescent leaf phosphorus, SNg indicates green stem nitrogen, SNs indicates senescent stem nitrogen, SPg indicates green stem phosphorus and SPs indicates senescent stem phosphorus. LNRE indicates leaf nitrogen resorption efficiency, SNRE indicates stem nitrogen resorption efficiency, LPRE indicates leaf phosphorus resorption efficiency and SPRE indicates stem phosphorus resorption efficiency.
Bold characters indicate significant differences.