Table 1. The main chemical characteristics of two slag-based silicon fertilizers tested in the present study (%).
| Si fertilizer | CaO | SiO2 | MgO | Al2O3 | Fe2O3 | MnO | TiO2 |
| Q | 43.6 | 26.9 | 8.1 | 10.9 | 3.1 | 0.9 | 1.2 |
| H | 50.9 | 21.0 | 7.7 | 6.0 | 5.0 | 1.5 | 0.6 |
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