增温增CO2对间作玉米光合特性的影响

王飞,孙增光,尹飞,郭彬彬,刘领,焦念元

Effects of Elevated Temperature and CO2 on the Photosynthetic Characteristics of Intercropping Maize

WANG Fei,SUN ZengGuang,YIN Fei,GUO BinBin,LIU Ling,JIAO NianYuan

表4 增温增CO2对间作玉米光合-CO2响应曲线参数的影响

Table 4 Effect of elevated temperature and CO2 on the parameters of photosynthetic response curve to CO2 concentration of intercropping maize

年份 Year 苗后天数 Days after seedling (d) 磷水平 P level 处理 Treatment 羧化效率 CE CO2饱和时 净光合速率 Amax (μmol CO2·m-2·s-1) Rubisco最大 羧化速率 Vc,max (μmol·mol-1) 最大电子 传递速率 Jmax (μmol·mol-1) 磷酸丙糖利用率TPU (μmol·mol-1) 2018 59 P0 TC 0.133d 29.0d 80.0c 88.0c 8.40b +T+C 0.170c 30.9c 93.3b 103b 8.75b P180 TC 0.198b 34.0b 101a 112a 9.85a +T+C 0.206a 35.4a 102a 113a 9.95a 2019 34 P0 TC 0.145d 29.4e 88.2d 97.0d 8.52d +TC 0.153cd 32.1d 90.5d 99.6d 9.29d +T+C 0.196b 38.0b 113b 125b 10.9bc P180 TC 0.149d 35.8c 101.4c 111c 10.3c +TC 0.163c 39.1b 99.9c 109c 11.5ab +T+C 0.220a 41.8a 127.8a 141a 11.8a 55 P0 TC 0.159d 26.9e 86.2d 95.1d 7.51d +TC 0.162c 27.7e 95.2c 105c 7.57d +T+C 0.184b 33.6c 104.1b 115b 9.55b P180 TC 0.174bc 29.7d 95.2c 105c 8.49c +TC 0.179bc 35.3b 107.9b 119b 10.2b +T+C 0.238a 39.4a 123.6a 137a 11.1a 65 P0 TC 0.090c 22.7e 47.1d 51.1c 5.99cd +TC 0.078f 22.1e 37.1e 41.1d 5.50d +T+C 0.122b 24.6d 50.5d 54.9c 6.52c P180 TC 0.095d 28.0b 84.6b 104a 7.86b +TC 0.087e 25.9c 60.2c 93.0b 7.52b +T+C 0.149a 30.4a 93.7a 105a 8.52a 82 P0 TC 0.090a 19.9d 48.2b 51.6a 5.42b +TC 0.069d 17.8e 36.5d 39.6c 4.94d +T+C 0.084c 18.5e 38.0cd 40.6c 4.98d P180 TC 0.099b 27.0a 51.6a 54.4a 6.54a +TC 0.085bc 21.1c 40.0cd 42.3bc 5.67b +T+C 0.086bc 22.2b 41.6c 44.7b 5.79b