The Study On Evapotranspiration Features And Photosynthetic Performance During The Water Control Experiment Of The Kentucky Bluegrass Turf

In order to save water resources in arid and semi-arid region, we selected kentucky bluegrass (Connie, Kentucky, Eva, Merit, Kate, Jade, Smurf, Rhapsody, Jules, Fortner) which were common seen in the north China to do the water controlled experiment.. During the experiment, we measured the wilting coefficient of grass, the evaporation during the experiments, and the number of days needed to restore the original landscape of each turfgrass species, then found out the most drought resistanced variety—Eva. After that, we observed how different stubble heights and irrigations influenced Eva and found the most water-saving stubble height and irrigation. At the same time, we tested the photosynthesis of Eva and environmental index. The results showed that:1.The different kind of turf grasses’ wilting coefficient were significant difference. The time of Kentucky bluegrass tur’s evapotranspiration was piunged or daily evaporation’s peak appeared too early or too late could be the right time to irrigate.2. During the water controlled experiment, stubble heights and irrigations affected the turf’s demanded total wate to restorable r, the days of maintain and recover the landscape. The95%of field capacity and the3cm height’s treatment was the ideal maintenance.3. When the Kentucky bluegrass turf was in normal landscape, the temperature, the light and the stoma status were the most impact factors to influence the photosynthesis.