Cellulose-based coated fertilizer and preparation method thereof

Abstract

The invention belongs to the technical field of fertilizers, and discloses a cellulose-based coated fertilizer and a preparation method thereof. The cellulose-based coated fertilizer comprises a fertilizer core and a coated layer, wherein the coated layer wraps the outside of the fertilizer core; the fertilizer core comprises a granular fertilizer and an additive; and the coated layer comprises celluloses and a solvent for dissolving the celluloses. The releasing speed of the cellulose-based coated fertilizer is low, the releasing period of the fertilizer can be prolonged, slow absorption andutilization of a root system are facilitated, high yield of crops is promoted, meanwhile, a water retaining function is fulfilled, a soil environment can be improved, furthermore, the coated materialis formed quickly, the efficiency is high, a drying procedure is not required, sieving is not required either, waste residues are not produced in a production process, and an ecological environment isprotected favorably.

Description

technical field

[0001] The invention belongs to the technical field of fertilizers, and in particular relates to a cellulose-based coated fertilizer and a preparation method thereof, in particular to a cellulose-based coated fertilizer with water retention and slow-release functions and a preparation method thereof. Background technique

[0002] Fertilizer is one of the most important means of production in agricultural production and the material basis for crop growth. Most of the chemical fertilizers currently used in agricultural production are water-soluble quick-acting fertilizers, and the utilization rate of quick-acting fertilizers is very low because they are easy to lose, decompose and fix. For example, ordinary nitrogen fertilizers and compound fertilizers are easily decomposed when applied to the soil, nitrogen volatilization and soil leaching occur, resulting in waste loss of chemical fertilizers, greenhouse effect and non-point source pollution, resulting in low...

Examples

Embodiment 1

[0038] Main materials: sodium carboxymethyl cellulose, ether and urea. Prepare materials according to the following substance types and ratios. Weigh 8.8kg of urea, 400ml of ether, 0.4kg of sodium carboxymethylcellulose, 0.2kg of sodium alginate, 0.05kg of triamide thiophosphate, 0.05kg of dicyandiamide, 0.03kg of urease inhibitor, and 0.04kg of nitrification inhibitor. kg, polymer adsorption binder 0.03kg.

[0039] Mix urea, sodium alginate, triamide thiophosphate, dicyandiamide, urease inhibitor, nitrification inhibitor and polymer adsorption binder uniformly in proportion, send it to the disc granulator, and spray carboxymethyl fiber Ether solution of plain sodium, the granular fertilizer is placed until the surface is dry to become a product fertilizer, the powder does not need to be sieved, and it is mixed with the granular fertilizer for packaging.

[0040] Take an appropriate amount of finished product, bury it in the soil layer 3-5cm in the flower pot, keep the soil ...

Embodiment 2

[0042] Main ingredients: sodium carboxymethyl cellulose, ethanol and urea. Prepare materials according to the following substance types and ratios: Weigh 8.8kg of urea, 400ml of ethanol, 0.4kg of sodium carboxymethyl cellulose, 0.2kg of sodium alginate, 0.05kg of triamide thiophosphate, 0.05kg of dicyandiamide, urease Inhibitor 0.03kg, nitrification inhibitor 0.04kg, polymer adsorption binder 0.03kg.

[0043] Mix urea, sodium alginate, triamide thiophosphate, dicyandiamide, urease inhibitor, nitrification inhibitor and polymer adsorption binder uniformly in proportion, send it to the disc granulator, and spray carboxymethyl fiber The ethanol solution of plain sodium and the granular fertilizer are placed until the surface is dry to become the product coated fertilizer. The powder does not need to be sieved, and the coated fertilizer and the granular fertilizer are mixed and packaged according to the mass ratio of 5:1.

[0044] Take an appropriate amount of finished product, b...

Embodiment 3

[0046] Main ingredients: sodium carboxymethyl cellulose, ethanol and diammonium phosphate. Prepare materials according to the following substance types and ratios: Weigh 8.8kg of diammonium phosphate, 400ml of ethanol, 0.4kg of sodium carboxymethyl cellulose, 0.2kg of sodium alginate, 0.05kg of triamide thiophosphate, and 0.05kg of dicyandiamide , 0.03kg of urease inhibitor, 0.04kg of nitrification inhibitor, and 0.03kg of polymer adsorption binder.

[0047] Mix diammonium phosphate, sodium alginate, triamide thiophosphate, dicyandiamide, urease inhibitor, nitrification inhibitor and polymer adsorption binder uniformly in proportion, send it to the disc granulator, and spray the cellulose Sodium ethanol solution and granule fertilizer are placed until the surface is dry to become the product coated fertilizer. The powder does not need to be sieved, and the coated fertilizer and granule fertilizer are mixed and packaged according to the mass ratio of 7:1.

[0048] Take an appr...

technical field

[0001] The invention belongs to the technical field of fertilizers, and in particular relates to a cellulose-based coated fertilizer and a preparation method thereof, in particular to a cellulose-based coated fertilizer with water retention and slow-release functions and a preparation method thereof. Background technique

[0002] Fertilizer is one of the most important means of production in agricultural production and the material basis for crop growth. Most of the chemical fertilizers currently used in agricultural production are water-soluble quick-acting fertilizers, and the utilization rate of quick-acting fertilizers is very low because they are easy to lose, decompose and fix. For example, ordinary nitrogen fertilizers and compound fertilizers are easily decomposed when applied to the soil, nitrogen volatilization and soil leaching occur, resulting in waste loss of chemical fertilizers, greenhouse effect and non-point source pollution, resulting in low...

Examples

Embodiment 1

[0038] Main materials: sodium carboxymethyl cellulose, ether and urea. Prepare materials according to the following substance types and ratios. Weigh 8.8kg of urea, 400ml of ether, 0.4kg of sodium carboxymethylcellulose, 0.2kg of sodium alginate, 0.05kg of triamide thiophosphate, 0.05kg of dicyandiamide, 0.03kg of urease inhibitor, and 0.04kg of nitrification inhibitor. kg, polymer adsorption binder 0.03kg.

[0039] Mix urea, sodium alginate, triamide thiophosphate, dicyandiamide, urease inhibitor, nitrification inhibitor and polymer adsorption binder uniformly in proportion, send it to the disc granulator, and spray carboxymethyl fiber Ether solution of plain sodium, the granular fertilizer is placed until the surface is dry to become a product fertilizer, the powder does not need to be sieved, and it is mixed with the granular fertilizer for packaging.

[0040] Take an appropriate amount of finished product, bury it in the soil layer 3-5cm in the flower pot, keep the soil ...

Embodiment 2

[0042] Main ingredients: sodium carboxymethyl cellulose, ethanol and urea. Prepare materials according to the following substance types and ratios: Weigh 8.8kg of urea, 400ml of ethanol, 0.4kg of sodium carboxymethyl cellulose, 0.2kg of sodium alginate, 0.05kg of triamide thiophosphate, 0.05kg of dicyandiamide, urease Inhibitor 0.03kg, nitrification inhibitor 0.04kg, polymer adsorption binder 0.03kg.

[0043] Mix urea, sodium alginate, triamide thiophosphate, dicyandiamide, urease inhibitor, nitrification inhibitor and polymer adsorption binder uniformly in proportion, send it to the disc granulator, and spray carboxymethyl fiber The ethanol solution of plain sodium and the granular fertilizer are placed until the surface is dry to become the product coated fertilizer. The powder does not need to be sieved, and the coated fertilizer and the granular fertilizer are mixed and packaged according to the mass ratio of 5:1.

[0044] Take an appropriate amount of finished product, b...

Embodiment 3

[0046] Main ingredients: sodium carboxymethyl cellulose, ethanol and diammonium phosphate. Prepare materials according to the following substance types and ratios: Weigh 8.8kg of diammonium phosphate, 400ml of ethanol, 0.4kg of sodium carboxymethyl cellulose, 0.2kg of sodium alginate, 0.05kg of triamide thiophosphate, and 0.05kg of dicyandiamide , 0.03kg of urease inhibitor, 0.04kg of nitrification inhibitor, and 0.03kg of polymer adsorption binder.

[0047] Mix diammonium phosphate, sodium alginate, triamide thiophosphate, dicyandiamide, urease inhibitor, nitrification inhibitor and polymer adsorption binder uniformly in proportion, send it to the disc granulator, and spray the cellulose Sodium ethanol solution and granule fertilizer are placed until the surface is dry to become the product coated fertilizer. The powder does not need to be sieved, and the coated fertilizer and granule fertilizer are mixed and packaged according to the mass ratio of 7:1.

[0048] Take an appr...