Table 3. The effects of mulching, basal fertilizer and top dressing nitrogen fertilizer on grain yield, dry matter accumulation, Nitrogen recovery efficiency (NRE), nitrogen use efficiency (NUE) and the partial factor productivity of the fertilizer (PFP) in the study years.
| Treatment | GY (Mg ha−1) | DM (Mg ha−1) | NRE (%) | NUE (%) | PFP (kg kg−1) | |
|---|---|---|---|---|---|---|
| 2012 | CK | 3.75±0.33d | 10.12±0.53e | – | – | – |
| MN0 | 3.33±0.06d | 9.43±0.14e | – | – | – | |
| BN1 | 4.93±0.39c | 12.48±0.36d | 17.91±5.26 | 28.12±1.47 | 30.84±2.42 | |
| MN1 | 5.19±0.09bc | 13.3±0.48c | 33.35±4.60 | 29.45±0.45 | 32.46±0.54 | |
| BN2 | 5.63±0.14b | 15.79±0.61b | 42.92±4.67 | 18.91±0.55 | 23.45±0.60 | |
| MN2 | 6.72±0.36a | 16.91±0.28a | 60.05±2.95 | 20.16±0.72 | 28.01±1.51 | |
| 2013 | CK | 3.57±0.24d | 9.8±0.25d | – | – | – |
| MN0 | 3.24±0.28d | 9.68±0.25d | – | – | – | |
| BN1 | 4.76±0.07c | 11.79±0.64c | 6.97±4.26 | 26.48±0.67 | 29.77±0.44 | |
| MN1 | 5.53±0.24b | 12.33±0.83c | 20.30±10.46 | 29.45±0.77 | 34.58±1.47 | |
| BN2 | 5.54±0.36b | 13.75±1.37b | 34.85±9.90 | 17.34±0.95 | 23.09±1.49 | |
| MN2 | 6.56±0.08a | 15.29±0.23a | 60.25±3.05 | 18.14±1.22 | 27.34±0.34 | |
Means within columns followed by the same lowercase letters are not significantly different (p < 0.05) according to Duncan’s multiple range tests for irrigation treatments within same season.