3种观赏草的持水性能

本研究以福建地区比较常见的3种观赏草旱伞草（Cyperus alternifolius）、狼尾草（Pennisetum alopecuroides）和麦冬（Ophiopogon japonicus）为研究对象，应用浸泡法分别测定3种观赏草根、茎、叶的持水量并进行分析。研究表明，3种观赏草的持水性能存在差异，其中狼尾草的持水性能最强。观赏草的各部位持水性同样存在差异，浸泡时间与持水率呈极显著正相关关系，与吸水速率呈极显著负相关关系（P<0.001）。3种观赏草均有良好的持水性能，对园林造景和生态保护具有积极的作用。

Water-holding capacity of three mainly ornamental grasses in Fujian

Three common ornamental grasses Cyperus alternifolius, Pennisetum alopecuroides and Ophiopogon japonicus in Fujian were studied and the soaking method was applied in determining and analyzing the water holding capacity of their roots, stems and leaves. P.alopecuroide was proved to have the highest water holding capacity and the rest two were generally lower in water holding rate. In various soaking periods, the water holding rates had significantly positive correlation with the soaking time while the water holding rate showed significantly negative correlation. The results showed that three kinds of ornamental grass had good water holding capacity, there were the positive effect on landscape gardening and ecological protection.