大气CO2与温度升高对北方冬小麦旗叶光合特性、碳氮代谢及产量的影响

宗毓铮,张函青,李萍,张东升,林文,薛建福,高志强,郝兴宇

Effects of Elevated Atmospheric CO2 Concentration and Temperature on Photosynthetic Characteristics, Carbon and Nitrogen Metabolism in Flag Leaves and Yield of Winter Wheat in North China

ZONG YuZheng,ZHANG HanQing,LI Ping,ZHANG DongSheng,LIN Wen,XUE JianFu,GAO ZhiQiang,HAO XingYu

图1 CO2浓度和气温升高对小麦净光合速率与气孔导度的影响 CK：CO2浓度和气温与外界大田环境相同;EC：CO2浓度为大田浓度+200 μmol·mol-1,气温与外界大田环境相同;ET：CO2浓度与大田环境相同,气温为大田气温+2℃;ECT：CO2浓度为大田环境浓度+200 μmol·mol-1,气温为大田气温+2℃。P<0.05表示差异显著;P<0.01表示差异极显著。下同

Fig. 1 Effects of elevated CO2 and increased temperature on net photosynthetic rate (Pn) and stomatal conductance (Gs) of wheat CK: Ambient CO2 concentration, ambient temperature; EC: Ambient concentration +200 μmol·mol-1; ET: Ambient temperature +2℃; ECT: Ambient concentration +200 μmol·mol-1, ambient temperature +2℃. P<0.05, significant difference; P<0.01, extremely significant difference. The same as below