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3 增温增CO2对间作玉米光合-光强响应曲线参数的影响

Table 3 Effects of elevated temperature and CO2 on the parameters of photosynthetic response curve to light intensity of intercropping maize

年份 Year 苗后天数 Days after seedling (d) 磷水平 P level 处理 Treatment 表观量子效率 AQY (μmol·mol -1) 光饱和时净 光合速率LSPn (μmol CO2·m-2·s-1) 光饱和点 LSP (μmol·m-2·s-1) 光补偿点 LCP (μmol·m-2·s-1) 2018 59 P0 TC 0.036b 31.7b 1958b 80.5a +T+C 0.039ab 33.8b 2179ab 56.4b P180 TC 0.039ab 36.8a 2138ab 89.9a +T+C 0.043a 38.4a 2236a 82.7a 2019 34 P0 TC 0.047a 37.6c 1810a 97.5b +TC 0.048a 40.0bc 1865a 92.1c +T+C 0.050a 42.6abc 1880a 76.2d P180 TC 0.048a 45.5ab 2007a 101a +TC 0.051a 46.8ab 2018a 93.8c +T+C 0.051a 49.3a 2123a 90.7c 55 P0 TC 0.033d 28.8c 2150a 96.4b +TC 0.036b 31.9bc 1941ab 68.7d +T+C 0.043b 34.4ab 2150a 65.4e P180 TC 0.033d 33.2bc 2054ab 138a +TC 0.039bc 36.9ab 2353a 90.5c +T+C 0.058a 38.8a 2407b 70.6d 65 P0 TC 0.029cd 25.5bc — 47.0d +TC 0.025d 23.3c — 67c +T+C 0.045b 28.2b — 47.2d P180 TC 0.033c 28.7b — 86.2a +TC 0.029cd 26.1bc — 87.8a +T+C 0.053a 35.2a — 83.0b 82 P0 TC 0.038b 24.9ab — 62.3c +TC 0.031c 18.7c — 66.2b +T+C 0.038b 22.9ab — 85.6d P180 TC 0.057a 26.8a — 62.0c +TC 0.038b 21.4bc — 46.8d +T+C 0.038b 23.7ab — 48.9d