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为探讨不同栽植形式下轻型屋顶绿化植物的抗旱能力,对3组不同科属的九种屋顶绿化常用植物,采用3种栽植方式(单独栽植、3种混栽和9种混栽)进行了不同梯度的水胁迫处理。结果表明:物种在不同栽植形式下,有不同的响应。生物量受到栽植方式和水胁迫程度的影响。混合栽植在存活率和外观表型等方面均优于单一品种栽植。景天属植物抗旱能力优于其他两组植物。其他2组植物在水分胁迫2～3周后,达到永久萎蔫点,必须浇水。凡超过50%叶片出现干旱的植物,在试验结束时都已死亡。
In order to explore the drought resistance of light roof greenery under different planting patterns, three kinds of common green roof plants of different genera in three different planting styles (single planting, three kinds of mixed planting and nine kinds of mixed planting) Gradient water stress treatment. The results showed that: the species in different planting forms, have different responses. The biomass is affected by the mode of planting and the degree of water stress. Mixed planting in the survival rate and appearance of phenotype are better than a single variety of planting. Sedum plants better drought resistance than the other two groups of plants. The other two groups of plants in the water stress 2 to 3 weeks, reaching a permanent wilting point, we must watering. Plants in which more than 50% of the leaves are droughts have died at the end of the trial.