Slow-release fertilizer comprising resin and resin-coated Chinese medical stone particles and preparation method thereof

Abstract

The invention discloses slow-release fertilizer comprising resin and resin-coated Chinese medical stone particles. The slow-release fertilizer comprises, by weight, 9-12 parts of Chinese medical stone, 7-9 parts of bagasse, 10-14 parts of peanut shell, 7-9 parts of shell powder, 8-10 parts of biogas waste residue, 14-17 parts of rapeseed cake, 5-7 parts of vegetable residue, 2-3 parts of EM biological inocula, 6-8 parts of potassium chloride, 4-6 parts of fulvic acid, 8-10 parts of ammonium humate, 9-11 parts of urea, 6-7 parts of calcium phosphate, 4-6 parts of magnesium sulfate, 6-7 parts of melamine-formaldehyde resin, 1-2 parts of isopropanol, 2-3 parts of alpha-olefin sulfonate, 5-6 parts of an auxiliary agent and a proper amount of water. The slow-release fertilizer is prepared from common organic matters as raw materials by fermentation and can be used as base fertilizer in plant plantation. The aqueous penetrative resin has degradability, and can slowly release chemical components in degradation. The Chinese medical stone particles can prevent soil hardening and promote water seepage so that an effective utilization rate is improved and a topdressing amount is greatly reduced.

Description

technical field [0001] The invention relates to a slow-release fertilizer with resin-coated medical stone particles and a preparation method thereof, belonging to the technical field of slow-release fertilizers in fertilizers. Background technique [0002] Melamine-formaldehyde resin (melamine-formaldehyde resin), the polymer obtained by the reaction of melamine and formaldehyde, also known as melamine-formaldehyde resin, melamine resin, English abbreviation MF. A cross-linking reaction occurs during processing and molding, and the product is an infusible thermosetting resin. It is customarily called amino resin together with urea-formaldehyde resin. [0003] The raw material is melamine (2,4,6-triamino-1,3,5-triazine) and 37% formaldehyde solution, the molar ratio of formaldehyde to melamine is 2~3, the first step generates different numbers of N-hydroxy The methyl substituent is then further condensed into a linear resin. The reaction conditions are different, and the mo...

AI Technical Summary

Problems solved by technology

[0006] The finished product of melamine has better hardness and wear resistance than the finished product of urea-formaldehyde resin, and has better resistance to chemicals and electrical insulation performance. However, the adhesive layer is easy to break after curing, and it is not suitable to use modified melamine resin glue alone.