Table 3 Simulation equations and eigenvalues of cotton aboveground biomass accumulation
Year | Treatment | Regression equation | t1/d | t2/d | T/d | Vt/(kg·hm−2·d−1) | Vm/(kg·hm−2·d−1) | Tm/d |
|---|---|---|---|---|---|---|---|---|
2013 | I1MC1 | Y = 39 189.187 6/(1 + 465.723 9e−0.071 1t) | 67.8 | 104.9 | 37.0 | 611.1 | 697.0 | 86.4 |
I1MC2 | Y = 37 721.907 3/(1 + 396.890 0e−0.069 0t) | 67.6 | 105.8 | 38.2 | 570.8 | 651.0 | 86.7 | |
I1MC3 | Y = 36 661.550 0/(1 + 331.029 7e−0.066 8t) | 67.2 | 106.6 | 39.4 | 536.6 | 612.0 | 86.9 | |
I1MT | Y = 38 922.490 8/(1 + 374.496 2e−0.067 2t) | 68.6 | 107.8 | 39.2 | 573.4 | 654.0 | 88.2 | |
I2MC1 | Y = 45 184.819 9/(1 + 298.497 0e−0.065 9t) | 66.5 | 106.5 | 40.0 | 652.5 | 744.2 | 86.5 | |
I2MC2 | Y = 47 738.069 4/(1 + 422.657 8e−0.069 1t) | 68.5 | 106.6 | 38.1 | 722.7 | 824.3 | 87.5 | |
I2MC3 | Y = 43 412.265 5/(1 + 324.714 3e−0.066 1t) | 67.5 | 107.4 | 39.8 | 629.1 | 717.6 | 87.5 | |
I2MT | Y = 46 227.585 2/(1 + 412.900 5e−0.068 6t) | 68.6 | 107.1 | 38.4 | 694.7 | 792.3 | 87.9 | |
I3MC1 | Y = 44 426.721 0/(1 + 515.977 7e−0.075 0t) | 65.8 | 100.9 | 35.1 | 730.0 | 832.6 | 83.3 | |
I3MC2 | Y = 44 931.277 7/(1 + 494.906 2e−0.073 5t) | 66.5 | 102.3 | 35.8 | 724.2 | 826.0 | 84.4 | |
I3MC3 | Y = 49 579.434 5/(1 + 401.142 2e−0.069 0t) | 67.8 | 106.0 | 38.2 | 749.9 | 855.3 | 86.9 | |
I3MT | Y = 47 421.597 2/(1 + 534.220 3e−0.073 6t) | 67.5 | 103.3 | 35.8 | 764.6 | 872.0 | 85.4 | |
2014 | I1MC1 | Y = 45 098.242 0/(1 + 205.223 2e−0.056 6t) | 70.8 | 117.3 | 46.5 | 559.7 | 638.4 | 94.0 |
I1MC2 | Y = 43 945.917 3/(1 + 184.797 6e−0.054 8t) | 71.2 | 119.2 | 48.0 | 528.2 | 602.4 | 95.2 | |
I1MC3 | Y = 40 262.221 0/(1 + 181.066 8e−0.055 9t) | 69.4 | 116.6 | 47.1 | 493.3 | 562.7 | 93.0 | |
I1MT | Y = 40 601.721 4/(1 + 319.224 1e−0.063 9t) | 69.6 | 110.8 | 41.2 | 568.7 | 648.6 | 90.2 | |
I2MC1 | Y = 45 367.516 2/(1 + 252.860 6e−0.063 0t) | 67.0 | 108.8 | 41.8 | 626.1 | 714.1 | 87.9 | |
I2MC2 | Y = 52 455.878 5/(1 + 208.022 6e−0.057 3t) | 70.1 | 116.1 | 45.9 | 659.3 | 752.0 | 93.1 | |
I2MC3 | Y = 46 278.329 3/(1 + 193.341 1e−0.058 2t) | 67.8 | 113.1 | 45.2 | 590.5 | 673.5 | 90.4 | |
I2MT | Y = 47 501.021 6/(1 + 240.842 6e−0.060 9t) | 68.5 | 111.8 | 43.3 | 633.6 | 722.6 | 90.1 | |
I3MC1 | Y = 42 584.477 7/(1 + 327.189 9e−0.070 0t) | 63.9 | 101.5 | 37.6 | 653.5 | 745.3 | 82.7 | |
I3MC2 | Y = 43 548.103 7/(1 + 333.394 7e−0.069 6t) | 64.5 | 102.3 | 37.8 | 664.7 | 758.1 | 83.4 | |
I3MC3 | Y = 47 725.614 0/(1 + 371.678 4e−0.069 4t) | 66.3 | 104.2 | 37.9 | 726.4 | 828.5 | 85.2 | |
I3MT | Y = 45 494.754 2/(1 + 361.552 5e−0.069 4t) | 65.9 | 103.9 | 38.0 | 692.0 | 789.2 | 84.9 |