Fruits, vegetables, flowers and other crops grown in greenhouses feature high added value, and set strict requirements for irrigation water quality and fertilization precision. Poor irrigation water quality will cause clogging of drip tapes and micro-sprinklers, and affect irrigation uniformity; inaccurate fertilization will compromise crop quality and yield.
In light of the application characteristics of greenhouses, an automated water and fertilizer management solution consisting of disc filters, Venturi fertilizer injectors, solenoid valves and controllers can be adopted: Disc filters have high filtration precision and large dirt-holding capacity, which meet the fine filtration requirements of greenhouse irrigation; Venturi fertilizer injectors are connected in parallel with the main pipe, and the fertilizer suction volume is accurately controlled through regulating valves; solenoid valves work with irrigation controllers to realize zoned, timed automatic irrigation, which greatly reduces labor costs.
This solution supports setting irrigation and fertilization programs according to the water and fertilizer demand patterns of different crops, realizes refined water and fertilizer management, improves water and fertilizer utilization efficiency, and reduces labor intensity. Given the high ambient humidity in greenhouses, attention should be paid to the corrosion resistance of materials during equipment selection. It is recommended to select high-strength engineering plastic materials for key components such as filters and valves to ensure long-term stable operation.