NFT Hydroponics

Nutrient Film Technique (NFT): The depth of the nutrient solution is only a few millimeters, and the liquid flow flows through the vegetable roots in a film-like manner. Part of the vegetable roots is immersed in the shallow flowing nutrient solution, and the other part is exposed to the moisture in the planting tank. It can better solve the oxygen demand of root respiration. The planting trough must have a certain slope (around 1:75). Shallow flow cultivation is widely used in some crops such as lettuce and tomatoes.

NFT hydroponics is also called nutrient liquid membrane technology. It is a practical method that is widely used in hydroponics and has low technical requirements. It is widely used in the cultivation of leafy vegetables. It is characterized by a thin nutrient solution layer. Most of the root system exists in the humid space, and it is unlikely to cause growth failure due to the lack of oxygen in the nutrient solution.

The use of square PVC pipes for NFT-style hydroponic cultivation, called NFT hydroponics, has the characteristics of easy management, convenient operation, and clean environment. It is suitable for pesticide-free cultivation in protected facilities and is also suitable for plant factories. Vegetable production, even the cultivation and utilization of open fields or urban squares, have been popularized and used in agricultural production, sightseeing agriculture or family greening.

The shallow liquid flow cultivation facility has five parts: nutrient solution tank, cultivation bed, liquid adding system, liquid drainage system and circulation system.

The planting tank of shallow flow cultivation contains about 5-10 mm of nutrient solution. The total amount of nutrient solution in the planting system is small. Therefore, the concentration and composition of the nutrient solution are prone to rapid changes. The liquid supply must be continuously circulated and energy consumption Larger, if there is a long-term power failure or a water pump failure, the problem is likely to occur if the cycle is not timely. During the high temperature and the peak period of crop production, the plant leaves will have a large amount of transpiration, consume a large amount of nutrient solution, and it is easy to supply it in time. Causes plants to wilt.

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