如何在楼顶种花?
如何在楼顶种花?大中城市人口稠密,高层建筑鳞此栉比,城市绿化面积不足,而许多建筑为平顶屋面,有的居民住房也有晒台或楼顶平台。为了增加绿化面积,现在世界上很多国家也在利用楼顶绿化。楼顶平台上空气好,光照充足,夏季昼夜温差大,土壤温度高,肥料容易分解,对植物生长有利。在楼顶种花要注意下列几点:
(1)减轻建筑物的负荷,选用木屑、蛭石、砻糠灰等掺人土壤中,既可减少重量,又有利于增加土壤透气性,促使根系生长,增加吸收水肥的能力。同时土层厚度应控制在最低限度,一般草皮及草本花卉,栽培土深16厘米;灌木,栽培土深40~50厘米;乔木,栽培土深75~80厘米。
(2)将花池、种植槽、花盆等重物设置在承重墙或柱上。
(3)排水畅通,勿使水聚积在屋面上。花池及花盆浇灌、雨淋后,多余的水分要及时排尽,灌溉设备也要方便,最好能有喷淋装置,以增加空气湿度。楼顶风大,空气干燥,经常喷雾有利植物生长。
(4)楼顶风大,宜设置风障保护,夏季要适当遮阴。
(5)应该选择喜阳、耐旱、根系发达的植物种类。最好选择须根的花卉,因它们水平根系发达,能适应土层浅薄的土壤。也可搭设棚架,种植攀缘花卉,在其下种一些耐阴性花卉。
(6)若仅为防暑降温用,可种植垂盆草等地被植物,据实践证明,楼顶绿化后温度可下降4~5℃,还可保护屋顶建筑结构。月季、米兰、茉莉、玫瑰、迎春、六月雪、石榴等喜阳花卉,都能在楼顶上生长良好,以上就是关于如何在楼顶种花的介绍。
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