From: Photosynthetic characteristics of cotton are enhanced by altering the timing of mulch film removal
Item | Year | Soil layer depth /cm | CK | T1 | E1 | T10 | Air Temperature /°C |
---|---|---|---|---|---|---|---|
Average temperature /°C | 2015 | 10 | 23.56 | 23.08 | 22.27 | 23.48 | 23.54 |
 | 20 | 23.68 | 22.87 | 22.49 | 23.06 |  | |
 | 30 | 22.34 | 22.69 | 22.26 | 22.54 |  | |
2016 | 10 | 22.99 | 21.95 | 21.32 | 23.31 | 24.03 | |
 | 20 | 23.00 | 21.72 | 21.24 | 22.93 |  | |
 | 30 | 22.70 | 21.60 | 21.09 | 22.55 |  | |
Accumulated temperature /°C | 2015 | 10 | 2 572.90 | 2 562.80 | 2 535.62 | 2 563.53 | 2 571.68 |
 | 20 | 2 587.03 | 2 529.05 | 2 536.32 | 2 517.27 |  | |
 | 30 | 2 439.18 | 2 491.04 | 2 472.97 | 2 459.96 |  | |
2016 | 10 | 2Â 587.76 | 2Â 570.10 | 2Â 547.73 | 2Â 625.77 | 2Â 703.08 | |
 | 20 | 2 588.33 | 2 536.72 | 2 532.49 | 2 582.41 |  | |
 | 30 | 2 554.44 | 2 509.85 | 2 501.04 | 2 541.30 |  | |
Average temperature difference /°C | 2015 | 10 | 9.79 | 6.46 | 6.18 | 8.38 | 13.34 |
 | 20 | 5.58 | 4.59 | 4.22 | 5.28 |  | |
 | 30 | 2.45 | 2.30 | 2.22 | 2.45 |  | |
2016 | 10 | 3.76 | 2.83 | 2.94 | 5.78 | 13.33 | |
 | 20 | 2.85 | 1.56 | 1.74 | 2.33 |  | |
 | 30 | 1.28 | 0.84 | 0.81 | 0.85 |  | |
Accumulated temperature difference /°C | 2015 | 10 | 1 068.56 | 749.50 | 824.28 | 912.97 | 1 452.60 |
 | 20 | 609.13 | 524.83 | 538.85 | 571.94 |  | |
 | 30 | 265.95 | 265.55 | 271.44 | 265.98 |  | |
2016 | 10 | 419.60 | 378.80 | 430.62 | 655.84 | 1Â 514.70 | |
 | 20 | 319.50 | 217.42 | 264.24 | 258.89 |  | |
 | 30 | 144.81 | 114.12 | 124.48 | 96.89 |  |