苏联研制成功一种人造土壤,系利用合成纤维下脚料制成。这种松软并富含气孔的团块土壤,使用前放入营养液中浸泡数天,即可种植作物和花卉。在地铁、矿井、潜水艇、宇宙飞船甚至嘈杂的工厂车间里利用这种土壤栽花种菜,可达到美化环境、净化空气及抑制噪音的目的。 The Soviet Union successfully developed a man-made soil, the Department of the use of synthetic fiber scraps. This loose, stomata-rich clump of soil is planted in crops and flowers for several days before being soaked in nutrient solution. In the subway, mines, submarines, spacecraft and even noisy factory workshop to use this soil planting vegetables, can beautify the environment, purify the air and suppress the purpose of noise.