In order to reveal the cause of water use efficiency (WUE) difference, water and photosynthetic characteristics of Tall Fescue genetic materials with different WUE were studied in pot experiment.

• 选用高羊茅不同水分利用效率的遗传材料，利用盆栽试验对其水分和光合特性进行了研究，旨在揭示其水分利用效率差异的原因。