Introduction to the principle of NFT hydroponic system

NFT (nutrient film technology) hydroponic system is an advanced plant soilless cultivation technology, and its principles mainly include the following aspects:

Nutrient solution supply: The NFT system extracts the nutrient solution from the storage tank through a circulation pump and then transports it to the planting tank through a pipeline. The nutrient solution forms a thin liquid film in the planting tank to provide water and nutrients for the plant roots.

Root growth: The roots of plants grow on the liquid film in the planting tank and absorb the water and nutrients in the liquid film to obtain the nutrients needed for growth. Since there is no soil constraint, the roots of plants can grow freely, which is more conducive to the development of the root system and the absorption of nutrients.

Liquid film renewal: When the nutrient solution circulates in the planting tank for a certain period of time, it will take away some of the organic acids and harmful substances secreted by the plant roots, so the liquid film needs to be renewed regularly. The NFT system realizes the automatic renewal of the liquid film by controlling the running time and frequency of the circulation pump.

Environmental control: NFT systems are usually used in conjunction with facilities such as greenhouses or plant factories to provide plants with optimal growth conditions by controlling environmental factors such as temperature, humidity, and light.

Nutrient solution management: NFT systems need to regularly monitor and adjust parameters such as the concentration, pH value, and conductivity of the nutrient solution to ensure that plants receive appropriate nutrient supply. At the same time, pipes, planting troughs and other equipment need to be cleaned and disinfected regularly to prevent the occurrence of pests and diseases.

NFT hydroponic systems have the advantages of water saving, fertilizer saving, high yield, and high quality. They are suitable for soilless cultivation of various plants, especially in the factory production of vegetables, flowers, fruit trees and other crops.