高温干旱复合胁迫对夏玉米产量和茎秆显微结构的影响

邵靖宜,李小凡,于维祯,刘鹏,赵斌,张吉旺,任佰朝

Combined Effects of High Temperature and Drought on Yield and Stem Microstructure of Summer Maize

SHAO JingYi,LI XiaoFan,YU WeiZhen,LIU Peng,ZHAO Bin,ZHANG JiWang,REN BaiZhao

表3 高温干旱对夏玉米光合特性的影响

Table 3 Effects of high temperature and drought on photosynthesis of summer maize (2019)

时期 Stage 处理 Treatment 气孔导度 Stomatal Conductance (Gs) (mmol·m-2·s-1) 净光合速率 Net photosynthetic rate (Pn) (µmol CO2·m-2·s-1) 蒸腾作用 Transpiration rate (Tr) (mmol H2O·m-2·s-1) VT+7 d CK 312.3a 32.5a 5.7a T 200.3c 24.8c 4.1c D 293.7b 27.1b 4.8b T+D 138.3d 20.3d 3.0d R3 CK 164.0a 26.5a 6.7a T 112.5c 25.1b 6.0b D 143.0b 25.9b 5.4c T+D 91.0d 22.4c 5.0d