无土栽培是不用土壤而用化学溶液培植农作物的一种新的栽培方法。早在一九二九年,美国加里福尼亚大学就有人用这种方法种植蕃茄成功。以后由于远途运输中途供应蔬菜和军事的需要,这一栽培技术有所发展,如泛美航空公司为了在中途供应飞行人员和旅客 Soilless cultivation is a new cultivation method of cultivating crops without using soil and chemical solution. As early as 1929, some people in the University of California, California, used this method to grow tomatoes successfully. This cultivation technique has since evolved as a result of the long-distance transport of vegetables and military supplies, such as the Pan American Airlines flight in order to supply pilots and passengers