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Slow-release urea fertilizer containing alginate oligosaccharide and preparation method

A technology of brown algae oligosaccharide and slow-release urea, applied in the direction of urea compound fertilizer, nitrogen fertilizer, organic fertilizer, etc., can solve the problems of reducing fertilizer nitrogen utilization rate, increasing soil pH value, easy leaching of nitrate nitrogen, etc. The effect of application amount, improving utilization rate and stimulating growth and development

Inactive Publication Date: 2022-01-07
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, a slow-release urea fertilizer containing fucoidan oligosaccharides was prepared. The raw materials were: based on 92 parts of urea granules, 4 parts of fucoidan oligosaccharides, 0.5 parts of polyaspartic acid, and 0.05 parts of urease inhibitor (N- Butylthiophosphoric 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, structural formula Polyaspartic acid of C4H6NO3.

[0018] Preparation:

[0019] 1) Preparation of suspension solution: dissolve 5 parts of ethyl cellulose copolymer into 500ml industrial ethanol solution, then add 4 parts of fucoidan oligosaccharide, 0.5 part of polyaspartic acid, 0.05 part of urease inhibitor (N-butyl Thiophosphoric triamide, NBPT) are mixed evenly and then added, and the evenly stirred copolymer forms a mixed suspension solution, which is ready for use. ...

Embodiment 2

[0022] Using urea as a nitrogen source, a slow-release urea fertilizer containing fucoidan oligosaccharides was prepared. The raw materials were: based on 92 parts of urea granules, 4 parts of fucoidan oligosaccharides, 0.5 parts of polyaspartic acid, and 0.05 parts of nitrification inhibitors (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 is: 4000, Polyaspartic acid of the formula C4H6NO3.

[0023] Preparation:

[0024] 1) Preparation of suspension solution: dissolve 5 parts of ethyl cellulose copolymer into 500ml industrial ethanol solution, then add 4 parts of fucoidan oligosaccharide, 0.5 part of polyaspartic acid, 0.05 part of nitrification inhibitor (3,4- Dimethylpyrazole phosphate, DMPP) is mixed evenly and then added, and the evenly stirred copolymer forms a mixed suspension solution for use.

[0025]...

Embodiment 3

[0027] Using urea as a nitrogen source, a slow-release urea fertilizer containing fucoidan oligosaccharides was prepared. The raw materials were: based on 92 parts of urea granules, 4 parts of fucoidan oligosaccharides, 0.5 parts of polyaspartic acid, and 0.05 parts of urease inhibitor (N- A mixture of butyl thiophosphoric triamide, NBPT) and nitrification inhibitor (3,4-dimethylpyrazole phosphate, DMPP), 5 parts of ethyl cellulose copolymer, 500ml of industrial ethanol solution; among them, urea granules The nitrogen content is 50%, the particle size is 0.5 mm; the molecular weight is: 4000, polyaspartic acid with 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 4 parts of fucoidan oligosaccharide, 0.5 part of polyaspartic acid, 0.05 part of urease inhibitor (N-butyl Thiophosphoric triamide, NBPT) and nitrification inhibitor (3,4-dim...

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Abstract

The invention relates to a slow-release urea fertilizer containing alginate oligosaccharide and a preparation method, and belongs to the technical field of agricultural fertilizers. The fertilizer is prepared from the following raw materials in parts by weight: 94-98 parts of urea nitrogen fertilizer, 2-5 parts of alginate oligosaccharide, 0.001-1 part of synergist and 0.001-0.1 part of biochemical inhibitor. The slow-release urea fertilizer containing alginate oligosaccharide 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 urea nitrogen fertilizer, and promote the absorption of plants to nitrogen, phosphorus, potassium and trace element nutrient elements; growth and development of plants are effectively stimulated, and rooting, root nourishing and root protecting of crops are accelerated; and plants are induced to generate disease resistance, the disease resistance of the plants is improved, and the application amount of chemicals can be reduced.

Description

technical field [0001] The invention relates to a slow-release urea fertilizer containing brown algae oligosaccharides and a preparation method, 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 volatilized, which l...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/40C05G3/90C05G5/12C05G5/30
CPCC05G3/00C05G3/40C05G3/90C05G5/12C05G5/30C05C9/00C05C11/00C05F11/00
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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