基质成分改变对绿色屋顶植物抗旱性的影响  

Effect of Substrate Composition on Drought Resistance of Green Roof Plants

作　　者：薛明珂 XUE Mingke(Yangling Vocational and Technical College,Yangling,Shaanxi 712100,China)

机构地区：[1]杨凌职业技术学院生物工程分院,陕西杨凌712100

出　　处：《陕西农业科学》2021年第8期28-34,共7页Shaanxi Journal of Agricultural Sciences

基　　金：杨凌职业技术学院自然科学基金项目(A2018055)。

摘　　要：绿化屋顶提供的服务质量很大程度上取决于绿化屋顶上植被的健康状况。研究评估了3种基质成分,有不同粒径碎砖、聚丙烯酰胺凝胶、和活性覆盖物(景天属多肉植物的混合种植)添加的基质,对新栽植的羊茅和柳穿鱼在生长、生理和视觉健康方面的影响。研究表明,在受控温室环境中经历极端干旱天气25 d后,聚丙烯酰胺凝胶和大粒径碎砖的混合基质提高了基质的保水性,从而使两种绿色屋顶植物具有较强的抗旱能力,而景天属多肉覆盖物则没有影响。The service quality provided by green roofs largely depends on the health of the plant.In this study,three substrate components,including polyacrylamide gel,different brick particle size,and living mulch(mixed planting of sedum succulents),were evaluated.The results showed that after 25 days of extreme dry weather in a controlled greenhouse environment,the mixed substrate of polyacrylamide gel and large-size bricks improved the water-holding capacity of the substrate,so that two green roof plants have strong drought resistance.However,the succulent mulch had no effect on tolerance of plant.

关 键 词：聚丙烯酰胺凝胶 景天属覆盖物 碎砖 持水力 抗旱性 

分 类 号：S688.9[农业科学—观赏园艺]