【摘要】 对草地早熟禾和高羊茅在整个生长季内的蒸散量 (ET)进行了田间测定 ,研究了北京地区冷季型草坪草的ET变化规律。结果表明 ,生长季内高羊茅的总ET为 6 2 9 5 9mm ,比草地早熟禾的 5 6 0 85mm高出11% ;2个草种的ET变化趋势基本一致 ,均受气象因子的影响 ,各气象因子的作用不是孤立的 ;在整个生长季内草地早熟禾需灌水 344 2 2mm(0 344m3 ) ,高羊茅为 393 5 5mm(0 394m3 )。更多还原

【Abstract】 ET of kentncky bluegrass and tall fescue in the whole period of growth was measured in field conditions, and the change of ET of the cool season turfgrass in Beijing was studied The results showed that the total ET of tall fescue was higher than that of kentucky bluegrass by 11% Meteorological factors influenced the ET, and the role of each factor was not lonely 344 22mm irrigation water was needed by bluegrass, and tall fescue needed 393 55mm water for the whole period of growth更多还原