Tables
Characteristics of irrigated lands according to
salinity degree in 1998 |
| Normal soils |
85% |
| Light saline soils |
10% |
| Moderate saline
soils |
4% |
| Heavily saline
soils |
1% |
Characteristics of irrigated lands according to
ground water level in 1998 |
| Less 1 m |
2% |
| From 1 to 2 m |
13% |
| From 2 to 3 m |
16% |
| More 3 m |
67% |
Average productivity of agricultural crops (100 kg/ha) |
|
1980 |
1990 |
2001 |
| Cotton |
32.8 |
27.7 |
17.9 |
| Grain |
12.1 |
13.7 |
14.3 |
Main causes for poor state of
irrigated lands (thousand ha) |
| High ground water
level |
48 |
| Salinization |
24.4 |
| Combined impact |
14.6 |
Sources: National
Sustainable Development Report, Ministry for Nature Protection |
