Table 2 Classification of soil P leaching risk in arid agricultural soils and paddy land soils (mg Olsen-P kg−1)
Risk level | No risk | Low risk | Medium risk | High risk |
|---|---|---|---|---|
Arid agricultural soils | ≤ 59.63 | 59.63 ~ 119.26 | 119.26 ~ 178.89 | > 178.89 |
Paddy land soils | ≤ 35.35 | 35.35 ~ 70.70 | 70.70 ~ 106.05 | > 106.05 |