| Sample Numbers | Soil types | Available phosphorus (mg・kg−1) | Total phosphorus (g・kg−1) | Organic matter (g・kg−1) | pH |
| SPhigh | Red soil | 42.27 | 1.217 | 22.70 | 5.60 |
| SPmedium | Red soil | 22.45 | 0.985 | 34.47 | 5.75 |
| SPlow | Red soil | 9.07 | 1.023 | 23.82 | 5.83 |