无土栽培是指在人工温室内采用水培、沙培等方法种植作物,使作物周年生长,连续不断地供应新鲜农产品。自20世纪40年代美国科学家格里克首次将无土栽培用于商业化生产以来,这一技术发展迅速。它的优越性表现在以下几个方面。1、无土栽培的作物产量高,效益好。它可根据不同作物配 Soilless cultivation refers to the cultivation of crops in hydroponics, sand cultivation and other methods in artificial greenhouses, so as to ensure the annual growth of crops and continuously supply fresh agricultural products. This technique has developed rapidly since the American scientist Glick first commercialized soilless culture for commercial use in the 1940s. Its superiority is manifested in the following aspects. 1, soilless cultivation of high yield, good efficiency. It can be based on different crops