Table 5.
Expressions and performance for the model with four growth stage involved.
| Combination grow stage | Model expression | R2 | RMSE(kg/ha) |
|---|---|---|---|
| TS, JS, BS, HS | y = -0.65-0.09x1 + 0.27x2 + 1.96x3-0.54x4 | 0.82 | 195.47 |
| TS, JS, BS, FS | y = -1.05-0.06x1 + 0.20x2 + 2.08x3-0.23x5 | 0.83 | 188.94 |
| TS, JS, BS, RS | y = -0.73-0.01x1 + 0.27x2 + 1.59x3-0.18x6 | 0.83 | 189.74 |
| TS, JS, HS, FS | y = 0.16 + 0.18x1 + 0.30x2 + 0.34x4-0.03x5 | 0.74 | 232.76 |
| TS, JS, HS, RS | y = -0.07 + 0.24x1 + 0.30x2 + 0.65x4-0.20x6 | 0.77 | 221.50 |
| TS, JS, FS, RS | y = 0.25 + 0.28x1 + 0.38x2 + 0.19x5-0.17x6 | 0.75 | 228.47 |
| TS, BS, HS, FS | y = -1.45 + 0.13x1 + 2.52x3 + 0.006x4-0.27x5 | 0.80 | 204.76 |
| TS, BS, HS, RS | y = -1.04 + 0.21x1 + 1.98x3-0.07x4-0.13x6 | 0.78 | 216.75 |
| TS, BS, FS, RS | y = -1.46 + 0.15x1 + 2.52x3-0.25x5-0.02x6 | 0.80 | 204.63 |
| TS, HS, FS, RS | y = -0.32 + 0.52x1 + 0.96x4-0.05x5-0.18x6 | 0.70 | 250.80 |
| JS, BS, HS, FS | y = -1.08 + 0.22x2 + 2.23x3-0.25x4-0.19x5 | 0.83 | 187.37 |
| JS, BS, HS, RS | y = -0.79 + 0.27x2 + 1.81x3-0.21x4-0.14x6 | 0.83 | 188.71 |
| JS, BS, FS, RS | y = -1.02 + 0.23x2 + 1.97x3-0.14x5-0.10x6 | 0.84 | 185.84 |
| JS, HS, FS, RS | y = 0.13 + 0.35x2 + 0.583x4 + 0.09x5-0.21x6 | 0.77 | 222.73 |
| BS, HS, FS, RS | y = -1.44 + 2.60x3 + 0.06x4-0.26x5-0.01x6 | 0.80 | 205.67 |