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。
Plants are held in place so their roots lie in soilless troughs, and water with dissolved nutrients is circulated over them.
不过，营养液是不能循环使用的，只能用一次。
However, the nutrient solution is not circulated but used only once.
为什么大规模营养液栽培中要进行营养液的循环流动？
Why the cycling of nutrient solution is needed in large scale nutrient solution culture?
本文采用深液流循环水培法（DFT）探讨了营养液中不同P、K浓度对水培番茄生长发育、产量及品质的影响。
This subject was studied the effect of different P, K concentration in nutrient by Deep Flow Technique(DFT) on growth, yield and quality of tomato .
本文采用深液流循环水培法（DFT）探讨了营养液中不同P、K浓度对水培番茄生长发育、产量及品质的影响。
This subject was studied the effect of different P, K concentration in nutrient by Deep Flow Technique(DFT) on growth, yield and quality of tomato .
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