伤根对春小麦光合特性及水分利用效率的影响研究

Effect of cutting spring wheat roots on the photosynthesis and the water use efficiency

盆栽春小麦伤根处理试验结果表明 ,苗期春小麦伤根适度处理可提高叶片光合速率及水分利用效率 ,促进光合产物积累 ,增加春小麦产量。拔节期春小麦伤根处理则抑制春小麦生长 ,降低其产量。

The treatment of cutting the spring wheat roots in pot experiment shows that injuring the spring wheat roots moderately in early time can boost the photosynthetic rate and promote the accumulation of the photosynthetic production, improve the water use efficiency (WUE) of spring wheat leaves, and finally increase the grain yield. However, injuring the spring wheat roots in the time of stem elonging mostly restrains the growth of the spring wheat, and the yield is decreased.