Humic Acid Coated Fertilizer: Sustained Release and Enhanced Efficiency

BB fertilizer, full name is bulk blended fertilizer. It is a kind of compound fertilizer made by blending several granular single fertilizers or compound fertilizers in a certain proportion. Its advantages are: comprehensive nutrient, high concentration, significant production savings, strong pertinence, easy processing, low production cost, no pollution, and flexible formulation. Humic acid-coated fertilizer is a full-fertilizer, slow-release, and synergistic BB fertilizer, and is suitable for mechanical application. These three characteristics determine that the fertilizer has the characteristics of saving fertilizer, saving water, saving labor and increasing production.

Sustained-release synergistic function The humic acid-coated fertilizer uses three series of coating materials to apply large-particle urea, granular ammonium phosphate, and agglomerate granulation potash, thereby realizing the “separation of the three elements”. "To achieve "nitrogen control, phosphorus, potassium" purposes.

In terms of “nitrogen control”, the coating material is improved from the single controlled nutrient dissolution rate of common coated slow-release fertilizers to the integrated system of delayed physical dissolution, controlled dissolution and diffusion control, multiple physical controlled release combined with urease or nitrification inhibition. , And through the different coating times (layers), to obtain different slow-release period of the product to meet the changes in nutrient demand for different crops throughout the growth period. As far as "promoting phosphorus" is concerned, it can effectively reduce the fixation of phosphorus by soil ions, increase the movement of phosphorus in soil and stimulate the absorption of phosphorus by crops. As far as "preserving potassium" is concerned, it can effectively reduce the probability of fixation of potassium ions by the crystal lattice and activate mineral potassium in the soil.

The process concept of promoting separation and control is combined with the production mode of BB fertilizer to change the mode of full or controlled nutrient release of controlled and controlled release fertilizers to form a new type of BB fertilizer product with slow release and increased efficiency.

Total nutrient supply Full nutrition means that under the premise that a large number of elements are supplied in sufficient quantities, the effective supply and even distribution of microelements are guaranteed. The process mode of humic acid-coated fertilizers provides the possibility of effective supply and even distribution of microelements. In the production process of the coating material, the medium and trace elements are added into the mixed liquid of the humic acid and the organic hydrophilic polymer to form a complex state, which is favorable for the absorption and utilization of the crop. At the same time, the coating materials containing medium and trace elements are coated on the surface of nitrogen, phosphorus and potassium granule fertilizers, and are evenly distributed in the soil. This solves the problem of uneven application of trace element roots and becomes a true “full nutrition”. "BB fat.

The humic acid-coated fertilizer suitable for mechanical application of BB fertilizer adopts the technical concept of stimulating separation and control, and adopts a process of grading and utilization on the design of production process, that is, granulation of large-particle urea, granular ammonium phosphate and powdered potassium fertilizer. During the process, the sub-sieving process was added to form semi-finished products with large, medium, and small particle sizes, and then the semi-finished products with similar particle sizes were blended into the soil testing formula fertilizer, thereby increasing the evenness index of the fertilizer.