无土栽培是在人工温室内采用水培、砂培等方法种植作物,使作物能四季生长,连续不断的供应新鲜农产品。自40年代美国学者格里克首次将无土栽培用于商业化生产,这一技术得以迅速发展,作为农业生产大国的中国发展无土栽培已刻不容缓。它的优越性表现在以下几点。 Soilless culture is the use of hydroponics, sand culture and other methods in the artificial greenhouse cultivation of crops, so that crops can grow seasons, a continuous supply of fresh produce. Since the American scholars Glick first used soilless culture for commercial production in the 1940s, this technology has been rapidly developed. As a large agricultural country, developing soilless cultivation in China has become an urgent task. Its superiority is manifested in the following points.