What is water-soluble fertilizer? Let me tell you.

  Water-soluble fertilizer, simply put, is fertilizer that dissolves in water. It contains all the nutrients plants need for growth. These nutrients vary in size. The larger ones are called macronutrients, such as nitrogen, phosphorus, and potassium. The smaller ones are called micronutrients, such as calcium, magnesium, sulfur, iron, manganese, zinc, copper, boron, molybdenum, and so on. In the fertilizer solution, many of these nutrients become tiny particles (ions). Plant roots can directly absorb these tiny particles for use. This is crucial because it enables rapid absorption.

  Take nitrogen as an example. Nitrogen is something plants require in large quantities. It serves as the fundamental building block for many vital components within the plant body, such as proteins and nucleic acids. The nitrogen in water-soluble fertilizers may be in the form of ammonium nitrogen or nitrate nitrogen. Both are readily available forms of nitrogen that plants can absorb quickly. Therefore, when plants urgently need nitrogen, water-soluble fertilizers can immediately fill the gap.

  Water-soluble fertilizers typically come in solid or liquid forms. Solid water-soluble fertilizers are usually powders or small granules. Their defining feature is their exceptional solubility in water. At normal temperatures (around 20°C), they dissolve completely and quickly, turning into a clear, residue-free solution. Liquid water-soluble fertilizers are even more convenient, as they are already in liquid form and can be applied directly to the soil.
  Therefore, they are particularly well-suited for use alongside irrigation. For instance, they are ideal for modern water-saving irrigation methods like drip irrigation and micro-sprinkler systems. Consider the advanced greenhouses where liquid water-soluble fertilizers are delivered drop by drop through fine tubes directly to the plant roots. This method of fertilization is precise, economical, and highly effective, with no waste.