Table 2.
Comparison of irrigation suitability in Hainan Island and other agricultural areas in China.
| Parameters | Range | Percentage of samples (%) | ||||
|---|---|---|---|---|---|---|
| Hainan Island | Dar es Salaam, Tanzania | North of Algeria | Muda Basin, Malaysia | KwaZulu-Natal, Africa | ||
| SAR | < 10 | 100 | 89.575 | 79.27 | 100 | 100 |
| 10–18 | – | 8.3 | 20.83 | – | – | |
| 18–26 | – | 2.04 | – | – | – | |
| > 26 | – | – | – | – | – | |
| %Na | < 20 | 11.11 | 8.30 | – | 7.44 | – |
| 20–40 | 33.33 | 24.3 | 66.67 | 33.88 | 34 | |
| 40–60 | 41.27 | 36.05 | 20.83 | 48.76 | 55 | |
| 60–80 | 12.70 | 31.25 | 12.5 | 12.40 | 11 | |
| > 80 | 1.59 | – | – | – | – | |
| EC | Average | 444.82 | 1854.17 | 2607 | 340.72 | 312 |