China is a big agricultural country, but with the continuous growth of population and the continuous deterioration of cultivated land, the per capita possession of land is decreasing, and it is urgent to strengthen the high-tech development of agriculture. One of the material foundations for the development of agriculture is the development of the fertilizer industry. Therefore, chemical fertilizers will appear on the scene, which not only solves the food problem of more than one billion people, but also brings huge economic benefits to human beings. As everyone knows, the large amount of fertilizer application has caused the decline in the quality of cultivated land and the adverse effects on the ecological environment.
The 21st century is the era of the green revolution. It is of vital importance to develop and produce green and environmentally friendly fertilizers. In recent years, great progress has been made in using potassium humate fertilizer to improve soil and improve fertilizer efficiency. The scientific and rational application of potassium humate in agriculture and the development and production of humic acid potassium products are feasible ways to develop organic-inorganic compound fertilizers in China. Practice has shown that the high utilization rate of humic acid potassium, improved soil, increased crop resilience and improvement of agricultural products have gradually received attention, and are known as the third generation of fertilizer.
The humic acid functional group in potassium humate can absorb potassium ions, prevent water loss in sandy soil and leaching soil, and prevent potassium from sticking in sticky soil. In addition, some parts of potassium humate are low-molecular humic acids such as fulvic acid, which have a dissolution effect on minerals such as potassium silicate and potassium feldspar, which can slowly decompose to increase the release of potassium and increase the content of available potassium. It is 87%–95% higher than the common potassium fertilizer utilization rate, which increases fertilizer efficiency, improves crop yield and improves quality. It has the special effects of combining land and land; long-acting and quick-acting coordination; water-retaining and fertilizer-retaining effects. It combines the advantages of inorganic fertilizer and farmyard manure and is superior to them. It has a good nutrient release regulation function. It is a good controlled release fertilizer, so that the nutrient is not too much in the early stage, the nutrient is not too low in the later stage, and the fertilizer supply curve is stable. The release rate can also be controlled by physical and chemical biotechnology to achieve two-way regulation of sustained release and sustained release. The balance between the supply of nutrients in the fertilizer and the demand for nutrients in the crop is basically synchronized to achieve a dynamic balance. Ordinary chemical fertilizers (such as urea, 50% – 60% potassium fertilizer, diammonium phosphate, etc.) are easy to produce soil compaction and water and gas pollution, potassium humate can be avoided or significantly reduced. And obviously high crop yield, improve crop quality, improve crop nutrient content, nitrate content, color, aroma, taste and storability. It is the material basis for agricultural clean production and green food with environmental protection functions. The loss of potassium humate is low, the utilization rate is high, the plant absorption is stable, and the yield and quality are improved in both directions. It is a “green” potash fertilizer for agricultural application and a substitute for ordinary agricultural potassium chloride and potassium sulfate. Potassium humate is suitable for any crop and can also be applied in combination with common fertilizers.