Principle and efficiency of oxygen enrichment of dynamic solution surface in nutrient solution

The method of dynamic solution surface (DSS), used in the deep solution flow culture, was put forward after having summarized and analyzed the technique and methods of oxygen enrichment used in the hydro-culture. DSS applied the following technique and methods: solution dripping, solution flowing, root exposure and moisture root. When the nutrient solution was pumped into the planting beds, it was led to flow toward the bottom of the planting beds by the sleeve pipe. The flowing of nutrient solution can offer more nutrition and oxygen to the plant root. When the pump stopped, the solution surface fell down. That would result in the up-root of the plant being exposed in the air, in which the oxygen could be absorbed sufficiently.