Water-soluble fertilizers refer to multi-component compound fertilizers that are highly soluble in water, with nutrients primarily in the form of water-soluble ions or molecules. They can be directly absorbed and utilized by crop roots or leaves via irrigation systems (e.g., drip irrigation, sprinkler irrigation, foliar application). Characterized by high solubility, they dissolve completely in water without residues or precipitation, thus preventing clogging of irrigation pipelines and making them ideal for water-fertilizer integration technologies in modern agriculture. Their nutrient composition is comprehensive and adjustable, typically encompassing macronutrients such as nitrogen, phosphorus, and potassium, secondary nutrients like calcium, magnesium, and sulfur, as well as micronutrients including iron, boron, and zinc. The nutrient ratio can be tailored to meet the demands of crops at different growth stages. Notably, they boast high absorption efficiency: as nutrients exist in water-soluble forms, crops can absorb them directly without prior transformation, minimizing nutrient loss. Their utilization rate generally ranges from 80% to 90%, significantly higher than that of traditional chemical fertilizers, which stands at 30% to 40%. Widely applied in cash crops such as greenhouse-grown produce, fruit trees, vegetables, and flowers, water-soluble fertilizers are particularly effective in arid regions or areas with limited water resources, enabling water and fertilizer conservation. Additionally, foliar-applied water-soluble fertilizers can rapidly supplement nutrients urgently required by crops and alleviate nutrient deficiency symptoms. Their development aligns with the trends of precision agriculture and green agriculture, playing a pivotal role in enhancing crop yield and quality while reducing environmental pollution.
){kind=link}