Preparation method of high-activity humic acid high-tower compound fertilizer

Abstract

The invention discloses a preparation method of a high-activity humic acid high-tower compound fertilizer. The high-activity humic acid high-tower compound fertilizer is prepared from 5%-8% of a coating agent, 80%-85% of a base material, 1.2%-2% of an ammoniating agent, 0.12%-0.2% of a defoaming agent, 6%-10% of humic acid and 1%-2% of biological bacteria. The base material is prepared from the following raw materials in parts by weight: 130 to 210 parts of urea, 60 to 90 parts of monoammonium phosphate, 2 to 3 parts of magnesium nitrate, 7 to 10 parts of potassium chloride and 1 to 2 parts ofpolyvinyl alcohol; the urea-formaldehyde resin coating agent is prepared from the following raw materials in parts by weight: 15 to 25 parts of urea and 25 to 35 parts of formaldehyde. After the humic acid fertilizer is processed according to the steps of the method, the humic acid fertilizer has a remarkable soil improvement effect, a high tower can be used for producing a humic acid compound fertilizer and inhibiting slurry from overflowing through an improved process, the moisture content of humic acid is reduced through pretreatment, the moisture content is low, pulverization, caking andother quality problems are not likely to happen, and a coating agent does not pollute the environment.

Description

technical field [0001] The invention relates to the technical field of chemical fertilizer processing, in particular to a method for preparing a high-activity humic acid high-tower compound fertilizer. Background technique [0002] Compound fertilizer production often uses soil testing formulas to measure soil nutrients. Soil testing formula fertilization is based on soil tests and fertilizer field experiments. According to the law of crop fertilizer requirements, soil fertilizer supply performance and fertilizer effects, organic fertilizers are used rationally. On the basis of this, the application amount, fertilization period and application method of nitrogen, phosphorus, potassium, and medium and trace elements are proposed. In layman's terms, it is scientific application of formula fertilizer under the guidance of agricultural scientific and technological personnel. The core of soil testing and formula fertilization technology is to adjust and solve the contradiction b...

AI Technical Summary

Problems solved by technology

[0003] At present, humic acid fertilizers have a significant effect on soil improvement. However, due to the reaction of humic acid and urea under high temperature conditions in the high-tower process, the slurry will leak out, affecting normal production and causing safety hazards. Above, the water content of the prepared product is high, and quality problems such as pulverization and agglomeration are prone to occur, and the coating agent pollutes the environment