Table 1. Changes in temperature, precipitation, and fertilizer application crop growth period during 1980–2010.
| Factors | Mean | Trend | Highest positive anomaly | Highest negative anomaly |
|---|---|---|---|---|
| Tave | 13.5±0.1°C | 0.05°Ca-1 ** | 1.2°C | -0.8°C |
| Tmax | 20.2±0.1°C | 0.03°Ca-1 ** | 1.2°C | -1.0°C |
| Tmin | 7.3±0.1°C | 0.05°Ca-1 ** | 1.0°C | -1.0°C |
| P | 447.4±13.1 mm | -3.33 mm a-1 * | 218.0 mm | -99.5 mm |
| F | 111.7±11.4 kg ha-1 | 6.83 kg ha-1 ** | 113.3kg ha-1 | -80.9 kg ha-1 |
* Represents the 5% level of significance.
** Represents the 1% level of significance.