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What are the key technical aspects of a water-fertilizer integration machine?

Release Date:

2022-06-07

With low-pressure irrigation systems, fertigation enables the dissolution of fertilizers in irrigation water, allowing simultaneous application during irrigation. This ensures that crop water and nutrient requirements are met promptly and appropriately, delivering water and nutrients to the soil in an optimal combined form for efficient uptake and utilization, thereby achieving synchronized management and use of water and fertilizer. The integrated water–fertilizer unit allows for precise setting of the water–fertilizer ratio as well as timed and quantified application.

　　With low-pressure irrigation systems, fertigation enables the dissolution of fertilizers in irrigation water, allowing simultaneous application during irrigation. This ensures that crop water and nutrient requirements are met promptly and appropriately, delivering water and nutrients to the soil in an optimal combination for uptake and utilization, thereby achieving synchronized management and use of water and fertilizer. The integrated water–fertilizer unit allows for precise setting of the water–fertilizer ratio as well as timed and quantitative application.

　　I. Fertigation machine Technical Advantages

　　Based on the results of trial demonstrations and application statistics, adopting Fertigation machine Fertilization can increase yields of protected vegetables and fruit trees by more than 20%, save 50–200 cubic meters of water per mu, reduce fertilizer use by 20–60 kilograms, and decrease labor requirements by 5–20 workers, thereby lowering production costs. For grain crops, fertilization can boost yields by over 10%, saving more than 40 cubic meters of water per mu, reducing chemical fertilizer use by at least 5 kilograms, cutting labor needs by 1–2 workers, and generating cost savings and additional economic benefits exceeding RMB 100 per mu.

　　II. Components of Integrated Water and Fertilizer Equipment

　　 Fertigation machine The system comprises pumps, power units, filtration equipment, control valves, and other components; the water delivery and distribution network, which includes main lines, lateral mains, and capillary tubes; drip irrigation tubing or micro-sprinklers; as well as flow and pressure control devices and measuring instruments. Common filtration systems include screen filters and cartridge filters. For water sources with high sand content, centrifugal filters should be installed; for water sources containing abundant moss or debris, media filters are recommended.

　　III. Fertigation machine Key points for use:

　　1. Reduce fertilizer application by 33% to 50% compared with farmers’ customary rates.

　　2. Select water-soluble fertilizers and adjust the nutrient ratio to achieve a well-balanced formulation.

　　3. Increase the frequency of irrigation to approximately 2–3 times the conventional rate, while reducing the volume of water applied per irrigation.

　　Fertilizer Application Recommendations:

　　1. Fertilizer specially formulated for micro-irrigation and fertigation (the formulation should be selected based on the crop’s growth stage).

　　2. Water-soluble fertilizers (apply after pre-dissolution and filtration).

　　3. Conventional fertilizers (urea, ammonium sulfate, ammonium nitrate, potassium nitrate, etc.).

　　So, what kinds of scenarios are suitable for using a fertigation machine?

　　1. Greenhouse

　　Greenhouse crops have stringent requirements for temperature, humidity, fertilization, and irrigation, which in turn place high demands on integrated water–fertilizer systems. Such systems must be highly precise and equipped with IoT devices to enable real-time monitoring of all key greenhouse parameters. Currently, China’s major greenhouse demonstration parks rely on advanced water–fertilizer equipment to manage their operations.

　　2. Open-air

　　The application of fertigation equipment in rural areas is limited. For example, it is suitable for crops such as vegetables and fruits, which require substantial amounts of water and fertilizer. However, it is not recommended to use fertigation equipment for staple crops like wheat, corn, and rice, as these crops have long irrigation periods and rely primarily on base fertilization.

　　3. Mountains and Hills

　　The primary challenge in irrigating crops in mountainous areas is the difficulty of achieving uniform water application due to the complex terrain. This utility model effectively addresses this issue by enabling uniform irrigation and fertilization.

　　4. Desert Regions

　　China has begun to combat desertification by planting trees and constructing greenhouses in desert areas; however, water is an extremely precious resource. Water-fertilizer integration systems have addressed this challenge. By prioritizing water conservation, drip irrigation combined with greenhouse-based aquaponics has led to a steady annual reduction in the country’s desertified land.


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