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无土栽培是一种新的农业生产技术,它依据植物生理、栽培、营养及农业工程等多学科的理论与技术,形成了不同于传统农业生产的新的栽培方式。它不是用土,而是用水、砂子、草炭、蛭石、锯末等作为栽培基质,并定期供给营养液来栽培作物。它具有提高作物产量和产品品质、减少病虫害、节水节肥、避免连作障碍等特点。无土栽培已有很长的历史,但它被用于农业生产则是近几十年来的事。本世纪二十年代后期,这一技术开始被用于蔬
Soilless culture is a new technique of agricultural production. Based on multidisciplinary theories and techniques such as plant physiology, cultivation, nutrition and agricultural engineering, soilless cultivation forms a new cultivation method different from traditional agricultural production. Instead of using soil, it uses water, sand, peat, vermiculite, sawdust and the like as a cultivation medium and regularly supplies nutrient solution to grow crops. It has to improve crop yield and product quality, reduce pests and diseases, water and fertilizer, to avoid continuous obstacles and so on. Soilless cultivation has a long history, but its use in agricultural production has been in recent decades. The late twenties of this century, this technology began to be used for vegetables