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美国的屋顶园艺为解决屋顶开发问题，纽约市盖伊亚研究所的曼克维次研制成一种轻质土壤基质──小颗粒泡沫聚苯乙烯，比重仅为一般土壤的十分之一。另咸廉姆全辛格公司设计制造了一种屋顶移动吊架，跨度为２０英尺，可在轨道上通行，不必留出操作走道，可增加３０％种植面...
Roof Horticulture in the United States To solve the problem of roof development, Mankiewicz, of the Guyana Institute in New York City, developed a light-weight soil substrate, a small-particle styrofoam, that is one-tenth the size of a typical soil. Another Johnson & Johnson designed and manufactured a roof mobile hanger, spanning 20 feet, can be on the track, without leaving the operating aisle, can increase 30% of planting ...