Research and application of multifunctional hydroponics installations and nutrient solution auto control system

Multifunctional hydroponics installations were composed of cultivation bed, closed nutrient solution circulating system, nutrient solution temperature control system, dissolved oxygen adding system and nutrient solution automatic check and control system. The experiments were performed for half a year. The results shows that the system could improve the heat preservation capability of cultivation bed, supply plant with needed oxygen and automatically collect nutrient solution data in order to modify the nutrient of plants. Lots of problems were solved such as low utilization efficiency of nutrient solution, pur control capacity, pollution and water wasting and so on. The system can improve the yield and quality of plant by the technique.