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以5种混播草坪为试材,通过水量平衡法研究了5种混播草坪的蒸散量,比较了蒸腾耗水规律及节水潜力,并计算了5种混播草坪的坪草系数。结果表明:充分灌水条件下的蒸散量为混播Ⅴ(456.20mm)>混播Ⅲ(412.04mm)>混播Ⅰ(397.38mm)>混播Ⅱ(378.95mm)>混播Ⅳ(363.17mm),限制灌水时的蒸散量为混播Ⅳ(347.87mm)>混播Ⅴ(329.99mm)>混播Ⅱ(316.23mm)>混播Ⅰ(310.97mm)>混播Ⅲ(279.26mm);5种混播草坪节水潜力从大到小依次为混播III(132.78mm)>混播V(126.21mm)>混播I(86.41mm)>混播II(62.72mm)>混播IV(15.30mm);5种混播草坪的坪草系数介于0.93~1.52之间。
Five kinds of mixed grass were used as tested materials, the evapotranspiration of five kinds of mixed grass was studied by water balance method, the transpiration water consumption and water saving potential were compared, and the lawn grass coefficient of five kinds of mixed grass was calculated. The results showed that the evapotranspiration under the condition of full irrigation was the highest in terms of V ^ (456.20mm)> mixed broadcasting III (412.04mm)> mixed broadcasting Ⅰ (397.38mm)> mixed broadcasting Ⅱ (378.95mm)> mixed broadcasting Ⅳ (363.17mm) The evapotranspiration was in the range of 347.87mm> mixed Ⅴ (329.99mm)> mixed Ⅱ (316.23mm)> mixed I (310.97mm)> mixed Ⅲ (279.26mm) The results showed that the grass coefficient of the five kinds of mixed grass was between 0.93 and 1.52 for the mixed broadcasting III (132.78mm)> mixed broadcasting V (126.21mm)> mixed broadcasting I (86.41mm)> mixed broadcasting II (62.72mm)> mixed broadcasting IV between.