Table 3. Soil water storage (0–300 cm soil layer) at sowing, anthesis and maturity of winter wheat under different N levels.
| Years | N rate | Soil water storage (mm) | ||
|---|---|---|---|---|
| before sowing | anthesis | maturity | ||
| 2014/15 | 0 | 600.3 a | 435.1 b | 374.1 e |
| 90 | 600.3 a | 416.8 bc | 354.6 ef | |
| 150 | 600.3 a | 393.3 cd | 328.3 fg | |
| 210 | 600.3 a | 376.7 d | 319.5 g | |
| 2015/2016 | 0 | 414.6 a | 285.1 c | 319.1 bc |
| 90 | 414.6 a | 280.5 c | 316.0 b | |
| 150 | 414.6 a | 262.3 c | 312.5 c | |
| 210 | 414.6 a | 260.5 c | 302.7 b | |
| 2016/2017 | 0 | 412.7 a | 332.7 b | 304.5 d |
| 90 | 412.7 a | 319.2 b | 293.8 d | |
| 150 | 412.7 a | 329.8 b | 283.5 d | |
| 210 | 412.7 a | 323.3 b | 295.4 d | |
| ANOVA (F-values) | Years (Y) | 2315.8∗∗∗ | 900.4∗∗∗ | 117.3∗∗∗ |
| Nitrogen (N) | 0.00ns | 26.56∗∗∗ | 21.54∗∗∗ | |
| Y × N | 0.00ns | 8.08∗∗∗ | 6.47∗∗∗ | |
Notes.
*, **, *** significant at 0.05, 0.01 and 0.001 probability level, respectively. Different letters indicate significant differences (p ≤ 0.05) among treatments by least significant difference.