Study on Oxygen Content of Nutrient Solution in NFT System of Hydroponic Culture

By exploring the significant relationship between the environment fectors and the oxygen content of nutrient solution in NFT system, some suggestion a bout engineering design of the NFT system are offered to improve oxygen supply to roots. For instances:· Enlarging the volume of solution tank properly;· Attaching the sprinkling device of circulating solution;· Enlarging the tunnel of bed properly.Using the cold underground water to make up the nutrient solution in the tank, or reducing the greenhouse temperature in summer.