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间作对氮调控玉米光合速率和光合氮利用效率的影响
朱启林1,向蕊1,汤利1,2,龙光强1,2,*()
Effects of intercropping on photosynthetic rate and net photosynthetic nitrogen use efficiency of maize under nitrogen addition
ZHU Qi-Lin1,XIANG Rui1,TANG Li1,2,LONG Guang-Qiang1,2,*()

图2. 不同氮水平下单作和间作对玉米光合特征参数的影响(平均值+标准偏差)。不同小写字母代表同一种植模式下的不同氮水平间差异显著(p < 0.05)。不同大写字母代表同一施氮水平下间作和单作之间差异显著(p < 0.05)。I-M, 靠近玉米侧玉米叶片; I-P, 靠近马铃薯侧玉米叶片; M, 单作; Pn, 净光合速率; Ci, 胞间CO2浓度; Gs, 气孔导度; Tr, 蒸腾速率; Ls, 气孔限制值; WUE, 水分利用效率。

Fig. 2. Effects of monoculture and intercropping on photosynthetic characteristics of maize under different nitrogen levels (mean + SD). Different lowercase letters indicate significant difference among different N levels in the same planting pattern (p < 0.05). Different capital letters mean significant difference between monoculture and intercropping at the same N level (p < 0.05). I-M, intercropping maize leaves close to maize of other row; I-P, intercropping maize leaves close to potato; M, monoculture, Pn, net photosynthetic rate; Ci, intercellular CO2 concentration; Gs, stomatal conductance; Tr, transpiration rate; Ls, stomatal limitation; WUE, water use efficiency.