A Comprehensive Analysis of the Characteristics and Application Points of Humic Acid Compound Fertilizer

Humic acid compound fertilizer is a functional fertilizer made by adding humic acid substances to nutrients such as nitrogen, phosphorus and potassium. Humic acid raw materials mostly come from peat, lignite and weathered coal. It both supplies multiple nutrients like a compound fertilizer and improves soil and enhances fertilizer efficiency through humic acid, so it is often classified as a new type of functional fertilizer. Some similar products on the market are also written as humate compound fertilizer.

The characteristics of this type of fertilizer are quite distinctive. Humic acid can promote the formation of soil aggregate structure, improve compaction, and enhance the soil's water- and fertilizer-holding capacity; at the same time, it can chelate some secondary and trace elements, reduce nutrients being fixed by the soil, and help improve fertilizer use efficiency. In addition, humic acid has a certain stimulating effect on root growth, which helps crops grow strong seedlings and enhance stress resistance, so it is used more often on barren land, saline-alkali land or compacted plots.

In terms of application methods, humic acid compound fertilizer can be used as a base fertilizer or a topdressing; products with good water solubility are also suitable for flushing application or drip irrigation with water, and vegetables, fruit trees and many field crops can all use it. When used as a base fertilizer, it can be turned into the soil during land preparation; when used as a topdressing, the amount should be controlled and applied in stages. Care should be taken to avoid mixing it with strongly alkaline substances, so as not to affect the activity of humic acid, and it should be stored in a cool, dry place in daily use.

It should also be noted that humic acid compound fertilizer cannot completely replace organic fertilizer and farmyard manure; using it in reasonable combination with decomposed organic fertilizer gives better results. When purchasing, pay attention to the nutrient content and humic acid content labels on the product and choose products from reputable manufacturers. After application, combined with proper irrigation and field management, the fertilizer effect will be released more steadily.