Solid microbial agent and preparation method thereof

Abstract

The invention belongs to the field of agricultural biochemical products, and particularly relates to a solid microbial agent and a preparation method thereof. The solid microbial agent is prepared from the following raw materials in parts by weight: 100 parts of microbial fermentation solution, 150 to 300 parts of absorbent and 40 to 60 parts of coating agent; the coating agent is a mixture of polyethylene glycol and polypropylene glycol according to a weight ratio of (60: 40) to (80:20) or a poly(ethylene glycol-propylene glycol)copolymer with the content of polyethylene glycol being 60 to 80percent; and the coating agent is dissolved in the diol ether solvent to form a film. The microbial agent is provided in a solid form, thereby being convenient to transport, store and use; and meanwhile, the solid microbial agent has the expected sustained-release performance. The invention further relates to a preparation method of the solid microbial agent.

Description

technical field [0001] The invention belongs to the field of agricultural biochemical products, and in particular relates to a solid microbial agent and a preparation method thereof. Background technique [0002] Microbial agent refers to the product that is considered to have a large number of beneficial microorganisms with specific functions after they are produced and multiplied, and then made into a product containing specific substances in the living bacteria. Show), not only in the field of pollutant treatment, but also in many agricultural fields such as increasing fertilizer and production, sterilization and sterilization ("Revised Edition of Manual of Common Fertilizers", Tu Shihua). [0003] In the prior art, the application of microbial agents focuses on strain selection, compounding, and fermentation production (CN107058167A, CN105400720A, CN107118998A), and its products are generally bacteria-containing fermentation liquids, so there are difficulties in product ...

AI Technical Summary

Problems solved by technology

However, the above-mentioned technical solution is simply to load the liquid preparation to obtain a solid preparation. This kind of preparation, especially in the field of agricultural chemistry, once put into the soil, will cause the bacterial species to be quickly lost with the rain, without any slow-release effect.

Also disclosed in the prior art is coated granular microbial agent (CN102925426A), but its purpose is to prevent the adhesion between particles, and it adopts such as molten urea, water glass, etc. as coating materials, objectively there are microorganisms The problem of death, and this coating material is still unable to achieve the sustained release of microbial agents