Table 3.
Expressions and performance for the model with two growth stage involved.
| Combination grow stage | Model expression | R2 | RMSE(kg/ha) |
|---|---|---|---|
| TS, JS | y = 0.18 + 0.39x1 + 0.36x2 | 0.73 | 239.39 |
| TS, BS | y = -0.59 + 0.06x1 + 1.48x3 | 0.76 | 227.84 |
| TS, HS | y = 0.0026 + 0.43x1 + 0.50x4 | 0.68 | 261.48 |
| TS, FS | y = 0.087 + 0.74x1 + 0.12x5 | 0.64 | 276.90 |
| TS, RS | y = -0.0051 + 0.87x1 + 0.073x6 | 0.62 | 282.30 |
| JS, BS | y = -0.27 + 0.22x2 + 0.99x3 | 0.79 | 208.02 |
| JS, HS | y = 0.29 + 0.33x2 + 0.34x4 | 0.74 | 234.23 |
| JS, FS | y = 0.47 + 0.38x2 + 0.10x5 | 0.73 | 238.51 |
| JS, RS | y = 0.46 + 0.44x2 + 0.053x6 | 0.71 | 247.69 |
| BS, HS | y = -0.89 + 2.21x3-0.36x4 | 0.77 | 223.15 |
| BS, FS | y = -1.45 + 2.65x3-0.26x5 | 0.80 | 205.74 |
| BS, RS | y = -0.99 + 2.06x3-0.12x6 | 0.77 | 218.87 |
| HS, HS | y = 0.046 + 1.00x4-0.10x5 | 0.66 | 267.60 |
| HS, RS | y = -0.020 + 1.12x4-0.16x6 | 0.67 | 263.20 |
| FS, RS | y = 0.67 + 0.25x5 + 0.053x6 | 0.57 | 303.43 |