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Slow-release urea fertilizer containing mineral-derived potassium fulvate and preparation method of slow-release urea fertilizer

A technology of potassium fulvic acid and slow-release urea, which is applied in urea compound fertilizers, nitrogen fertilizers, organic fertilizers, etc., can solve the problems of reducing the nitrogen utilization rate of fertilizers, increasing soil pH, and easy leaching of nitrate nitrogen. Improve utilization rate, enhance drought resistance, and stimulate growth and development

Inactive Publication Date: 2022-01-04
成都金禄福生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After urea is applied to the soil, it is quickly converted into ammonium nitrogen under the action of urease in the soil. A large amount of ammonium nitrogen makes the soil pH value rise rapidly and ammonia volatilization increases; Under the action of nitrification, ammonium nitrogen is converted into nitrite nitrogen and nitrate nitrogen in a short period of time. Nitrate nitrogen is easily leached in the soil, and nitrite nitrogen will also be converted into nitrogen oxides ( Such as NO2) in the form of gaseous loss, resulting in a large loss of fertilizer nitrogen, thereby reducing the utilization rate of fertilizer nitrogen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Using urea as a nitrogen source, prepare slow-release urea fertilizer containing mineral-sourced potassium fulvic acid. The raw materials are: based on 93 parts of urea granules, 1.5 parts of mineral-sourced potassium fulvic acid, 0.5 part of polyaspartic acid, and 0.05 part of urease inhibitor agent (N-butyl thiophosphoric triamide, NBPT), 5 parts of ethyl cellulose copolymer, 500ml of industrial ethanol solution; the nitrogen content in urea granules is 50%, and the particle size is 0.5mm; the molecular weight is : 4000, polyaspartic acid of structural formula C4H6NO3.

[0018] Preparation:

[0019] 1) Preparation of suspension solution: dissolve 5 parts of ethyl cellulose copolymer into 500ml industrial ethanol solution, then add 1.5 parts of mineral source potassium fulvic acid, 0.5 parts of polyaspartic acid, 0.05 parts of urease inhibitor (N- Butylthiophosphoric triamide, NBPT) was added after mixing evenly, and the homogeneously stirred copolymer formed a mixed ...

Embodiment 2

[0022] Using urea as a nitrogen source, prepare slow-release urea fertilizer containing mineral-sourced potassium fulvic acid. The raw materials are: based on 93 parts of urea granules, 1.5 parts of mineral-sourced potassium fulvic acid, 0.5 part of polyaspartic acid, and 0.05 part of nitrification inhibitor agent (3,4-dimethylpyrazole phosphate, DMPP), 5 parts of ethyl cellulose copolymer, 500ml of industrial ethanol solution; the nitrogen content in urea granules is 50%, and the particle size is 0.5mm; the molecular weight For: 4000, polyaspartic acid of structural formula C4H6NO3.

[0023] Preparation:

[0024] 1) Preparation of suspension solution: Dissolve 5 parts of ethyl cellulose copolymer into 500ml industrial ethanol solution, then add 1.5 parts of mineral source potassium fulvic acid, 0.5 parts of polyaspartic acid, 0.05 parts of nitrification inhibitor (3, 4-Dimethylpyrazole Phosphate, DMPP) was added after mixing evenly, and the homogeneously stirred copolymer fo...

Embodiment 3

[0027] Using urea as a nitrogen source, prepare slow-release urea fertilizer containing mineral-sourced potassium fulvic acid. The raw materials are: based on 93 parts of urea granules, 1.5 parts of mineral-sourced potassium fulvic acid, 0.5 part of polyaspartic acid, and 0.05 part of urease inhibitor The mixture of agent (N-butyl thiophosphoric triamide, NBPT) and nitrification inhibitor (3,4-dimethylpyrazole phosphate, DMPP), 5 parts of ethyl cellulose copolymer, industrial ethanol solution 500ml ; The nitrogen content in the urea granules is 50%, the particle size is 0.5 mm; the molecular weight is: 4000, polyaspartic acid with the structural formula C4H6NO3.

[0028] Preparation:

[0029] 1) Preparation of suspension solution: dissolve 5 parts of ethyl cellulose copolymer into 500ml industrial ethanol solution, then add 1.5 parts of mineral source potassium fulvic acid, 0.5 parts of polyaspartic acid, 0.05 parts of urease inhibitor (N- Butylthiophosphoric triamide, NBPT) ...

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Abstract

The invention relates to a slow-release urea fertilizer containing mineral-derived potassium fulvate and a preparation method of the slow-release urea fertilizer, belonging to the technical field of agricultural fertilizers. The fertilizer is prepared from the following raw materials in parts by weight: 97-99 parts of a urea nitrogen fertilizer, 1-2 parts of mineral-derived potassium fulvate, 0.001-1 part of a synergist and 0.001-0.1 part of a biochemical inhibitor. The slow-release urea fertilizer containing the mineral-derived potassium fulvate can effectively inhibit the conversion speed of urea to ammonium nitrogen, prolong the retention time of urea in soil, complex medium trace elements, improve the utilization rate of the urea nitrogen fertilizer, promote the absorption of plants to nutrient elements including nitrogen, phosphorus, potassium and trace elements, effectively stimulate the growth and development of plants, and accelerate rooting, root nourishing and root protecting of crops; and in addition, active factors of the mineral-derived potassium fulvate can activate the granular structure of soil, break hardening, improve the looseness of the soil, enhance ventilation and water retention functions, activate the soil, achieve the balance of water and nutrients of crops, and enhance the stress resistance of the crops, such as drought resistance, cold resistance, disease resistance and the like.

Description

technical field [0001] The invention relates to a slow-release urea fertilizer containing ore-sourced potassium fulvic acid and a preparation method thereof, belonging to the technical field of agricultural fertilizers. Background technique [0002] my country has a large population and the average arable land area is very limited. It is of great significance to protect the existing arable land, improve the use of obstructive soil, increase the effective action time of fertilizers, promote the effective absorption of fertilizers by crops, and improve the utilization rate of fertilizers. Therefore, how to prepare a fertilizer with rich nutrients, coordinated and long-lasting release of nutrients, and high nutrient utilization efficiency of fertilizers, especially the utilization rate of urea nitrogen fertilizer (the overall utilization rate of urea nitrogen is currently 30-35%), because ordinary urea fertilizer has a short validity period, It is easy to be leached and volatil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/40C05G3/80C05G3/90C05G5/12C05G5/30
CPCC05C9/00C05G3/00C05G3/40C05G3/80C05G3/90C05G5/12C05G5/37C05F11/02
Inventor 曹志贵王永向
Owner 成都金禄福生物科技有限公司
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