The Design and Research on Intelligent Fertigation System

There exists a severe but normal problem that the crop fertilization is uneven such as over or too less fertilized and the concentration can´t be well controlled. As to this situation, this paper presents the intelligent fertilization system, which can realize automatic irrigation, fertilization, injecting fertilizer and mixing fertilizer. The paper introduces the system structure, design of piping system and computer control system, and three control algorithms: fertilization control algorithm, injecting fertilizer and mixing fertilizer control algorithm and system priority algorithm. The experimental result proves that this system has a good quality for EC and pH adjustment, steady performance and good practicability.