不同水分处理对冬小麦光合生理的影响

[目的]为提出适宜生态环境的农田水分灌溉制度提供理论依据.[方法]在盆栽试验条件下,在冬小麦的拔节期、扬花期、灌浆期进行不同的水分处理,研究不同水分处理对小麦光合生理的影响.[结果]不同水分处理对小麦的蒸腾效率、光合效率、水分利用效率等均有影响;相比之下,低水处理对蒸腾速率的影响比对光合速率更为明显,不同的水分处理对冬小麦的光合生理的各项指标包括蒸腾速率、气孔导度、光合速率、胞间CO2浓度、水分利用效率等均有较大的影响,只对叶片温度的影响较小.[结论]该研究有助于实现水分的有效利用,达到节约用水和实现农业高产的目的.

Effects of Different Water Treatment on Winter Wheat Photosynthetic Physiology

[Objective] The research aimed to provide the theoretical basis for the proposal of the cropland water irrigation program suitable for the environment.[Method] Under pot experiment conditions,in jointing stage,flowering stage,filling stage of winter wheat in all the different water treatments,the effects of different water treatment on photosynthesis of wheat were studied.[Result] The different water treatments had impacts on wheat transpiration rate,photosynthetic rate,water use efficiency and so on.Compared with low water treatment,the transpiration rate and photosynthetic rate were more obvious,different water treatments of winter wheat in the optical and physiological indexes including the transpiration rate,stomatal conductance,photosynthetic rate,intercellular CO2 concentration and water use efficiency had great influence,and only minor effects on the blade temperature.[Conclusion] The research was conductive to realize the effective utilization of the water,and achieve the goal of saving water and the achievement of the high yield.