| 指标 | 处理 | 时间(d) | ||||||||||
| 5 | 10 | 15 | 20 | 25 | 30 | |||||||
| 净光合速率Pn μmol∙m−2∙s−1 | CK | 3.467 ± 0.432a | 3.773 ± 0.200a | 4.410 ± 0.352a | 6.697 ± 0.189a | 7.250 ± 0.262a | 8.947 ± 0.435a | |||||
| T1 | 3.263 ± 0.525a | 3.620 ± 0.361a | 3.87 ± 0.451ab | 4.267 ± 0.438b | 4.734 ± 0.075b | 4.620 ± 0.341b | ||||||
| T2 | 3.207 ± 0.165a | 3.347 ± 0.188ab | 3.503 ± 0.055bc | 4.077 ± 0.261b | 4.453 ± 0.215b | 4.890 ± 0.520bc | ||||||
| T3 | 2.81 ± 0.137a | 2.977 ± 0.380b | 3.097 ± 0.274c | 3.637 ± 0.732b | 3.903 ± 0.136c | 4.220 ± 0.050c | ||||||
| 蒸腾速率 Tr μmol∙m−2∙s−1 | CK | 1.353 ± 0.493a | 1.340 ± 0.036a | 1.343 ± 0.042b | 1.423 ± 0.015b | 1.423 ± 0.006b | 1.437 ± 0.025b | |||||
| T1 | 1.433 ± 0.147a | 1.367 ± 0.057a | 1.433 ± 0.060ab | 1.543 ± 0.070a | 1.437 ± 0.012b | 1.447 ± 0.021b | ||||||
| T2 | 1.263 ± 0.211a | 1.327 ± 0.015a | 1.367 ± 0.066b | 1.567 ± 0.042a | 1.547 ± 0.021a | 1.453 ± 0.153b | ||||||
| T3 | 1.353 ± 0.252a | 1.403 ± 0.040a | 1.477 ± 0.025a | 1.5967 ± 0.074a | 1.553 ± 0.153a | 1.503 ± 0.029a | ||||||
| 气孔导度 Gs μmol∙m−2∙s−1 | CK | 0.307 ± 0.008a | 0.317 ± 0.007a | 0.324 ± 0.009b | 0.380 ± 0.014c | 0.320 ± 0.023c | 0.312 ± 0.007a | |||||
| T1 | 0.309 ± 0.042a | 0.315 ± 0.003a | 0.334 ± 0.001b | 0.393 ± 0.023bc | 0.399 ± 0.046ab | 0.342 ± 0.009b | ||||||
| T2 | 0.308 ± 0.060a | 0.321 ± 0.011a | 0.330 ± 0.009b | 0.428 ± 0.030b | 0.359 ± 0.038bc | 0.3137 ± 0.009a | ||||||
| T3 | 0.330 ± 0.012a | 0.326 ± 0.002a | 0.348 ± 0.007a | 0.472 ± 0.015a | 0.434 ± 0.005a | 0.351 ± 0.025a | ||||||
| 胞间CO2浓度Ci μmol∙m−2∙s−1 | CK | 238.567 ± 11.015a | 230.900 ± 5.411a | 221.967 ± 6.240a | 217.567 ± 6.311b | 223.300 ± 6.151b | 229.733 ± 2.875b | |||||
| T1 | 232.433 ± 16.892a | 222.567 ± 9.329a | 229.467 ± 5.065a | 234.233 ± 15.168ab | 240.733 ± 4.022a | 237.033 ± 7.240ab | ||||||
| T2 | 230.600 ± 12.040a | 226.333 ± 29.285a | 230.333 ± 8.353a | 228.167 ± 13.773ab | 236.867 ± 4.384a | 234.200 ± 6.322ab | ||||||
| T3 | 264.567 ± 32.654a | 238.533 ± 8.458a | 232.267 ± 5.798a | 245.567 ± 5.608a | 244.767 ± 3.014a | 242.467 ± 4.499a | ||||||
| 总叶绿素 Chl mg∙g−1 | CK | 0.988 ± 0.013a | 1.222 ± 0.009a | 1.492 ± 0.026a | 1.917 ± 0.017a | 2.300 ± 0.023a | 2.831 ± 0.024a | |||||
| T1 | 0.939 ± 0.040a | 1.184 ± 0.028a | 1.402 ± 0.242b | 1.729 ± 0.027b | 1.976 ± 0.046b | 2.074 ± 0.011b | ||||||
| T2 | 0.986 ± 0.015a | 1.025 ± 0.019b | 1.410 ± 0.010b | 1.663 ± 0.041c | 1.845 ± 0.018c | 2.044 ± 0.024b | ||||||
| T3 | 0.939 ± 0.022a | 0.990 ± 0.043b | 1.169 ± 0.019c | 1.538 ± 0.017d | 1.706 ± 0.015d | 1.776 ± 0.046c | ||||||