| Types of biochar | Biochar addition amount (t/hm2) | Crop species | Effect |
| SFWB | 11 g/kg soil | Rice crop | A lone with biochar has no evident influence, but rate production improved by 80% with mineral fertilizer |
| BB | 0.5 g/kg soil | Soybean crop | Feedstock of unit area improved by 51% |
| RHB | 10 g/kg soil | Corn crop, Soybean crop | rate production improved by 10% - 40% |
| CCB | 0.45 g/kg soil | Corn crop | Yield improved by 10.98% |
| BBC | 20 g/kg soil | Corn crop | Yield improved by 22.77% |
| BBC | 40 g/kg soil | Corn crop | Yield improved by 49.80% |
| PMSB | 10 g/kg soil | Wheat crop | Acid soil yield improved by 30% - 40% |
| CSB | 10 g /kg soil | Wheat crop | Yield improved by 21.89% |