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The parameters of crop physiological growth.
| Parameters | Biological significances | Minimum value | Maximum value |
|---|---|---|---|
| TSUMEM | Thermal time from sowing to emergence (°C·d) | 0 | 170 |
| TSUM1 | Thermal time from emergence to anthesis (°C·d) | 150 | 1800 |
| TUSM2 | Thermal time from anthesis to maturity (°C·d) | 400 | 1550 |
| TBASEM | Lower threshold temperature for emergence (°C) | -10 | 8 |
| DLO | Optimum day length (hr) | 6 | 18 |
| DLC | Critical day length (hr) | 6 | 18 |
| TEFFMX | Maximum effective temperature for emergence (°C) | 18 | 32 |
