Preparation method of slow release type caking-preventing granular fertilizer

Abstract

The invention discloses a preparation method of a slow release type caking-preventing granular fertilizer, and belongs to technical field of agricultural fertilizer preparation. Poly (allyl amine) andan organic solvent are used under the effects of carbon dioxide gas, pretreatment is used for granular urea; chicken feather, water and sucrose are stirred and mixed, Baclicus lincheniformis is added, and after isothermal stirring and fermentation are carried out, disinfection, filtering and condensation are carried out in order to prepare feather hydrolysate; ultrasonic dispersion is carried outfor mica powder, phosphatide, mucoprotein and water in order to obtain dispersion liquid; feather hydrolysate and dispersion liquid are mixed in order to obtain film forming liquid; and finally, in afluidized bed, the film forming liquid is atomized and coated on the surface of the pretreated granular urea, drying is carried out, and the slow release type caking-preventing granular fertilizer isobtained. The slow release type caking-preventing granular fertilizer has excellent slow releasing effects and anti-caking performance.

Description

technical field

[0001] The invention discloses a preparation method of a slow-release anti-caking granular fertilizer, which belongs to the technical field of agricultural chemical fertilizer preparation. Background technique

[0002] With the rapid development of economy and urbanization and the increase of population, people's demand for crops is increasing, so it is required that crops have a higher yield to meet people's growing needs. The addition of chemical fertilizers has attracted more and more attention as a way to increase crop yields. Chemical fertilizers are mostly made into granular fertilizers, which can reduce the hygroscopicity of fertilizers, reduce environmental pollution, and facilitate application.

[0003] However, all fertilizers have agglomeration to varying degrees, which will affect their properties and performance. Agglomeration not only destroys the free-flowing state of the product, but also often needs to be crushed during use. Therefore, wheth...

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