Water-fertililizer integration technology delivers soluble fertilizers to crop roots along with water through the irrigation system, boasting remarkable advantages of saving fertilizer, water and labor while increasing efficiency. It has been rapidly popularized in fruit trees, vegetables and field crops in recent years. The stable operation of a water-fertililizer integration system largely depends on whether water quality filtration is in place.
In practical applications, once sediment, organic matter and impurities in the water source enter the system, they will cause a series of problems such as poor fertilizer absorption of Venturi fertilizer applicators, dripper blockage, and solenoid valve jamming, which will seriously affect fertilization uniformity and system service life. Therefore, the water-fertililizer integration system must be equipped with a reasonable filtration combination at the head: a sand filter or centrifugal filter for primary treatment, a disc filter or screen filter for fine filtration, and supporting exhaust valves and pressure holding valves to ensure stable pipe network pressure.
When selecting filtration equipment, comprehensive consideration should be given to water source type, system flow and fertilizer characteristics. Soluble fertilizers are prone to crystallization, so pipelines need to be flushed in time after fertilization, and the backwashing function design of filters is also crucial. Professional filtration system configuration is the fundamental guarantee for the long-term stable operation of water-fertililizer integration projects.