Organic fertilizer with inorganic fertilizer isolation layer and production method thereof

Abstract

The invention discloses an organic fertilizer with an inorganic fertilizer isolation layer, and a production method thereof. The organic fertilizer comprises an organic fertilizer core, the surface ofthe organic fertilizer core is wrapped with the inorganic fertilizer isolation layer for preventing the organic fertilizer core from being exposed in air and deteriorating, and the inorganic fertilizer isolation layer comprises an ammonium dihydrogen phosphate crystallization shell attached to the surface of the organic fertilizer core; and a reinforced isolation layer is arranged outside the ammonium dihydrogen phosphate crystallization shell, the reinforced isolation layer is formed by bonding calcium superphosphate or a mixture of calcium superphosphate and potassium sulfate outside the ammonium dihydrogen phosphate crystallization shell by using urea-formaldehyde glue, and the thickness of the ammonium dihydrogen phosphate crystallization shell is 0.2-1 mm. The organic fertilizer candirectly form an inorganic fertilizer crystal shell on the surface of the organic fertilizer core, prevents the organic fertilizer core from contacting with air, does not deteriorate after being exposed to air for a long time, and is rich in nutrition, higher in fertility, free of soil pollution and safer in crop production.

Description

technical field [0001] The invention relates to an organic fertilizer and a production method thereof, in particular to a granular fertilizer formed by wrapping an organic fertilizer core with an inorganic fertilizer and a production method thereof. Background technique [0002] Organic fertilizers are rich in a large amount of organic matter, which can not only provide comprehensive nutrition for crop growth, but also have a long fertilizer effect, which can increase and renew soil organic matter, promote microbial reproduction, and improve soil physical and chemical properties and biological activity. However, if the organic fertilizer made into granules is exposed to the air for a long time, it will absorb moisture and oxygen in the air and deteriorate, causing the fertilizer granules to disintegrate, which will not only easily cause the loss of fertilizer efficiency, but also bring inconvenience to mechanized fertilization. In order to overcome this defect, it is usually...

AI Technical Summary

Problems solved by technology

However, if the organic fertilizer made into granules is exposed to the air for a long time, it will absorb moisture and oxygen in the air and deteriorate, causing the fertilizer granules to disintegrate, which will not only easily cause the loss of fertilizer efficiency, but also bring inconvenience to mechanized fertilization

In order to overcome this defect, it is usually necessary to wrap a layer of resin cured film on the surface of fertilizer particles when producing organic fertilizers. Although this kind of organic fertilizer particles wrapped with resin cured film can solve the problem that organic fertilizer particles are easily disintegrated when exposed to the air for a long time However, after the resin film and organic fertilizer are applied to the soil together, the natural degradation time of the resin material will be longer, which will easily pollute the soil and affect the safety of crop production