Water-soluble fertilizers: the core of precise and efficient fertigation

Water-soluble fertilizers (WSF) are a type of fast-acting fertilizer with high-purity raw materials that dissolve completely in water. Their core characteristics are no residue and easy absorption. They can be applied through drip irrigation, sprinkler irrigation, and fertigation to achieve integrated water and fertilizer management, precisely matching the nutrient needs of crops at different growth stages. They are a mainstream high-efficiency fertilizer variety for facility agriculture and cash crop cultivation. I. Core Characteristics and Raw Material Requirements Completely Water-Soluble: The raw materials for water-soluble fertilizers must be high-purity chemical salts or chelated compounds. After dissolving, they leave no solid residue and will not clog irrigation equipment such as drip tapes and sprinklers. Macronutrient Raw Materials: Industrial-grade urea, potassium dihydrogen phosphate, potassium nitrate, potassium magnesium sulfate, etc., with a purity typically ≥98%. Micronutrient Raw Materials: Chelated zinc (EDTA-Zn), chelated iron (EDTA-Fe), boric acid, etc., avoiding binding with ions in the soil and loss of efficacy. Micronutrient Raw Materials: Flexible Nutrient Ratios Formulas can be customized according to crop nutrient requirements, for example: Seedling Stage Fertilizer: High-phosphorus formula to promote root development; Fruit Expansion Stage Fertilizer: High-potassium formula to enhance fruit sweetness and color; All-Purpose Fertilizer for the Entire Growth Stage: Balanced nitrogen, phosphorus, and potassium formula to meet the basic growth needs of crops.

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