Table 2 Soil type and soil basic fertility of three ecological regions in Inner Mongolia.
Ecological region | Soil type | Organic Matter (g/kg) | Total N (g/kg) | Available N (mg/kg) | Olsen P (mg/kg) | Available K (mg/kg) | pH |
|---|---|---|---|---|---|---|---|
Hetao plain irrigation area | Irrigated soil | 26 | 0.4 | 87.5 | 6.6 | 140.3 | 7.9 |
Tumochuan plain irrigation area | Silty loam | 26.7 | 0.5 | 92.4 | 8.8 | 118 | 7.6 |
Lingnan warm dry zone | Black soil | 29.1 | 1.3 | 100.6 | 13.7 | 112.8 | 7.8 |
