无土栽培是近几十年来发展起来的一种作物栽培的新技术。作物不是栽培在土壤中，而是种植在溶有矿物质的水溶液（营养液）里；或在某种栽培基质中，用营养液进行作物栽培。只要有一定的栽培设备和有一定的管理措施，作物就能正常生长，并获得高产。由于不使用天然土壤，而用营养液浇灌来栽培作物，故被称为无土栽培。

Soilless cultivation is a new technology of crop cultivation developed in recent decades. Crops are not cultivated in the soil, but in the mineral solution (nutrient solution); Or use nutrient solution for crop cultivation in a certain cultivation medium. As long as there are certain cultivation equipment and management measures, crops can grow normally and obtain high yield. It is called soilless culture because it does not use natural soil but uses nutrient solution to irrigate crops.