The relationship between turfgrass evapotranspiration andturf quality of Festuca arundinacea

The trial was conducted to determine the relationship between evapotranspiration and turf quality of Festuca arundinacea in the growth moment by single random grouping design in Beijing. This study indicated that the turf quality was significantly influenced by the turfgrass ET under the different moisture conditions. The turfgrass ET changing the turf quality had a limit threshold value, indicating that the turf quality was increased with the increase of ET when the ET was less than the threshold value and the turf quality was not increased with the increase of ET while the ET was more than the threshold value. Under the Ⅳ (below 40% field capacity) moisture condition, the turf quality had linear relationship with the turfgrass evapotranspiration in the trial period. When the soil moisture content was between 60% field capacity to 100% field capacity, there had analogical relationship.