| Variables | Unstandardized Coefficients | Standardized Coefficients | t | Sig. | ||
| B | Std. Error | Beta | ||||
| 氮 | (Constant) | 128.861 | 8.410 |
| 15.322 | 0.000 |
| 基质氮 | −1.249 | 0.292 | −0.344 | −4.283 | 0.000 | |
| 肥料氮 | −16.385 | 2.488 | −0.529 | −6.587 | 0.000 | |
| 磷 | (Constant) | −0.206 | 0.073 |
| −2.828 | 0.006 |
| 基质磷 | 3.336E−02 | 0.008 | 0.344 | 4.283 | 0.000 | |
| 肥料磷 | 0.147 | 0.022 | 0.529 | 6.587 | 0.000 | |
| 钾 | (Constant) | 129.638 | 8.530 |
| 15.198 | 0.000 |
| 基质钾 | −0.906 | 0.212 | −0.344 | −4.283 | 0.000 | |
| 肥料钾 | −12.958 | 1.967 | −0.529 | −6.587 | 0.000 | |