在不远的将来,也许会出现不需要阳光、不需要土壤,而又能进行大量生产菠菜、莴苣、柿子椒和生菜的蔬菜工厂。东京的一家研究所正在进行这项研究。在实验室里,生菜翠绿欲滴、长势喜人。在那里,萤光灯和白炽灯代替了阳光,溶有粉末肥料的水代替了土壤。实验室中的温度为二十度、湿度为80%,并且二氧化 In the near future, there may be vegetable factories that do not need sunshine and do not need soil, but are capable of mass-producing spinach, lettuce, bell pepper and lettuce. A research institute in Tokyo is conducting the study. In the laboratory, green lettuce green, growing gratification. There, fluorescent and incandescent lamps replaced the sun, and powdered fertilizer-dissolved water replaced the soil. Laboratory temperature of twenty degrees, humidity of 80%, and dioxide