Table 3.
Climatic characteristics of agroecological zones of the country
| Agroecological zones | Average rainfall (mm) | Standard deviation of rainfall | Average temperature (°C) | Standard deviation of temperature | Yield of rain-fed wheat (Kg/ha) | Yield of irrigated wheat (Kg/ha) | Yield of rice (Kg/ha) |
|---|---|---|---|---|---|---|---|
|
AEZ.1 Northwestern zone |
307.6 | 83.7 | 11.6 | 0.97 | 2671 | 2884 | - |
|
AEZ.2 Caspian coastal plain |
926.3 | 166.7 | 16.8 | 0.61 | 2250 | 2721 | 3954 |
|
AEZ.3 Central Zagros zone |
450.7 | 107.8 | 15.1 | 0.93 | 2798 | 2945 | - |
|
AEZ.4 Central zone |
232.5 | 67.7 | 16.5 | 0.75 | 3256 | 3176 | - |
|
AEZ.5 Khorasan zone |
222.20 | 68.1 | 14.8 | 0.79 | 2482 | 2630 | - |
|
AEZ.6 Arid central zone |
91.7 | 37.3 | 18.2 | 0.75 | 1544 | 2184 | 4818 |
|
AEZ.7 Khozestan zone |
226.4 | 79.6 | 25.8 | 0.75 | 2464 | 2551 | 3263 |
|
AEZ.8 Southern Zagrose zone |
363.1 | 127.7 | 17.8 | 0.71 | 2923 | 3037 | 4264 |
|
AEZ.9 Arid southern zone |
105.8 | 46.2 | 17.9 | 0.81 | - | 2378 | - |
|
AEZ.10 Southern coastal plain |
207.4 | 113.9 | 26.1 | 0.48 | - | 2436 | - |
Source: research calculations based on data from the Meteorological Organization of Iran (2018) and the Ministry of Agriculture – Jahad of Iran, 2018