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通过对郑单958和通科1两个品种分别进行深松40 cm和30 cm处理,光合特性都有不同程度的影响,叶面积指数明显提高,玉米不同层位叶净光合速率均显著提高,深松40 cm处理的玉米不同层位叶蒸腾速率显著提高,气孔导度只有郑单958的上部叶和下部叶在深松40 cm处理增加显著,而胞间二氧化碳浓度只有通科1的穗位叶在深松40 cm处理降低显著,不同年份两个品种的产量都显著提高。说明深松促进了光合作用,提高了玉米产量,尤其深松40 cm处理效果明显。
Through the treatments of 40 cm and 30 cm of two treatments of Zhengdan 958 and Tongke 1 respectively, the photosynthetic characteristics had different degrees of influence, and the leaf area index increased obviously. The net photosynthetic rate of different layers of maize increased significantly, The leaf transpiration rate of maize layer under 40 cm deep submergence significantly increased. The stomatal conductance increased only significantly in the upper and lower leaves of Zhengdan 958 at the depth of 40 cm, while the intercellular carbon dioxide concentration was only the ear position of Tongke 1 The leaves decreased significantly at the depth of 40 cm, and the yield of two varieties in different years increased significantly. Deep pine promoted photosynthesis, increased corn yield, especially deep pine 40 cm treatment effect is obvious.