Compound microbial fertilizer and preparation method thereof

Abstract

The invention discloses a preparation method of a compound microbial fertilizer and the compound microbial fertilizer prepared by adopting the method. The preparation method comprises the steps that 30-70 parts of amino acid fermentation liquid waste with 30-70% of water content, 0-10 parts of urea, 3-8 parts of ammonium sulfate, 5-25 parts of monoammonium phosphate, 5-15 parts of potassium sulfate, 15-35 parts of potassium humate, 5-15 parts of stone powder, 10-20 parts of coal cinder, 0.5-2 parts of magnesium sulfate, 0.3-0.5 parts of borax, 0.5-1 part of zinc oxide and 5-10 parts of bentonite are granulated; the surfaces of the material granules are coated with composite microbial agents through a coating agent under the condition of the temperature lower than 60 DEG C. The preparation method utilizes the amino acid fermentation liquid waste containing rich micromolecular organic matter such as free amino acids, the surfaces of the material granules are coated with the composite microbial agents through the coating agent, the raw material costs can be reduced, and more abundant nutrients can be also provided. The survival rate of strains is improved, the problems of powder falling and loss and infection of mixed bacteria are decreased, and a better fertilizer effect is obtained.

Description

technical field [0001] The invention relates to the technical field of compound fertilizers, in particular to a compound microbial fertilizer and a preparation method thereof. Background technique [0002] Compared with traditional organic / inorganic fertilizers, microbial compound fertilizers can combine the primary colors of inorganic nutrients, organic matter and bacterial microorganisms, supply a variety of macro and trace elements required for crop growth in a balanced manner, and resolve soil compaction, repair and condition soil Ingredients, strengthen the soil microflora, and enhance the stress resistance of crops. [0003] Microbial fertilizer itself is a living fertilizer, and its function is mainly completed by the life activity metabolism of a large number of beneficial microorganisms contained in it. Only when these beneficial microorganisms are vigorously multiplying and metabolizing, can material transformation and beneficial metabolites be continuously formed...

AI Technical Summary

Problems solved by technology

Microbial bacteria are affected by high temperature, salinity, drying and other factors in the preparation method of using microbial mixed granulation production. The mortality of microbial bacteria is relatively high, and the survival rate is lower than 70%, and some are even lower than 40%. The effect of bacteria

Although the direct spraying method is conducive to survival, there are many problems of bacterial loss, de-powdering and miscellaneous bacterial infection

And in the product combination of compound bacterial fertilizer, the combination of organic components, inorganic components and microbial strains is too high or too low, showing obvious randomness, and the quality of the same type of products varies greatly, which affects the effect of compound fertilizers