Evapotranspiration and reasonable irrigation amount of the common turfgrasses in Beijing

Under different water conditions in the field, the evapotranspiration (ET) of Kentucky bluegrass, tall fescue, perennial ryegrass, buffalograss, Japanese lawngrass and bermudagrass were investigated by the microlysimeter method. The results indicated that the ET of six turfgrasses was mainly influenced by turfgrass species, the second factor is water condition. Then the consumed water of turfgrass was valued by comparing the K_C of the turfgrass and the general crops in North China. The reasonable irrigation amount of six turfgrasses were estimated according to the ET as follows: tall fescue (391.8 mm)> Kentucky bluegrass (368.3 mm)>perennial ryegrass (315.1 mm)>Bermudagrass (300.7 mm)>buffalograss (184.0 mm)>Japanese lawngrass (110.5 mm).