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近年,一些建筑物密集,没有地面绿化条件的工厂、单位,试验在屋顶上养花和培育花苗,绿化厂区和空间环境,取得了很好的效果。屋顶养花通风和光照条件好,夏季晚间比地面降温快,昼夜温差大,土壤温度高,肥料容易分解,植株生长健壮。如月季、米兰、茉莉、扶桑、小石榴、无花果、夹竹桃等,在同样养护条件下,生长势态和着花座果率都比地面上长的好,病虫害少,盆花株型矮壮,既使密集摆放,也不会过于徒长。目前,一般屋顶多是由二层油毡、三层沥青、上敷一薄层豆石。在这样的屋顶上直接栽植花草,可用砖或木板做出花池,花池底部铺一层塑料薄膜,然后用隔年堆积的锯末或腐植土,掺一半面沙,填土10—15厘米,栽植草本花卉,
In recent years, some factories and units with intensive buildings and no greenery on the ground have experimented with raising flowers and cultivating flower seedlings on the rooftops, greening plant areas and the space environment, and achieved good results. The roof is well ventilated and has good lighting conditions. The summer evening is faster than the ground, the temperature difference between day and night is big, the soil temperature is high, the fertilizer is easy to decompose, and the plants grow robust. Such as rose, milan, jasmine, hibiscus, small pomegranate, fig, oleander and so on. Under the same conservation conditions, the growth vigor and the rate of planting fruit are better than the ground, less pests and diseases, Even if densely placed, it will not be too long. At present, the roof is mostly composed of two layers of linoleum, three layers of asphalt, coated with a thin layer of stone. Planting flowers and plants directly on such a roof can be made of brick or wood plank flower ponds, the bottom of the pool paved with a plastic film, and then stacked with sawdust or humus soil every other year, mixed with half of the sand, filling 10-15 cm, planting herbs flowers ,