Much of the research on nutrient deficiencies is based on growing plants hydroponically, that is, in soilless liquid nutrient solutions.

许多关于营养不足的研究是基于水培法种植植物，即在无土液体营养液中。

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Plants are held in place so their roots lie in soilless troughs, and water with dissolved nutrients is circulated over them.

其方法是：把作物固定在无土水槽里扎根，溶解在水里的营养液在根系周围循环。

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Sprouting vegetables can be produced in disused light industry workshops through semi-closed, spatial and soilless culture. It is a new production method combined tradition with intensive production.

利用轻工业生产用厂房进行芽苗蔬菜半封闭、立体、无土栽培，是传统农业生产与工业集约化规模生产相结合的一种新型生产方式。

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However, with a soilless system you obviously cannot grow anything that would be subterranean - so no onions or carrots, for instance.

BBC: The technology that's transforming gardening

Like high-end winemakers, these producers obsess about methods, singing the virtues of organic gardening, hydroponics (soilless agriculture), even aeroponics (with nutrient misted on the plants).

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