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 nitrog

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1:

[0017] Uroa is a nitrogen source, the preparation of slow-release urea fertilizer containing molar olegose is: the raw material is based on 92 parts of urea particles, 4 yellow oligosaccharides, 0.5 parts of polyteenine, 0.05 serviles (N- Butyl thiophosphorctamine, Nbpt), 5 parts of ethylcellulose copolymer, industrial ethanol solution 500ml; wherein the nitrogen having a nitrogen in urea particles is 50%, the particle size is 0.5 mm; the molecular weight is: 4000, structural formula C4H6NO3 polyteenine.

[0018] Preparation:

[0019] 1) Formulated a suspension solution: 5 parts of the copolymer of ethylcellulose dissolve into 500 mL of industrial ethanol solution, and then 4 drown oligosaccharides, 0.5 parts of polyteenine, 0.05 serviles (N-butyl) The phosphorimide, NBPT) is mixed and uniformly added, and the mixed copolymer is stirred into a mixed suspension solution and standby.

[0020] 2) Use fluidized bed coating technology to place a well-prepared mixed ...

Example Embodiment

[0021] Example 2:

[0022] The urea is a nitrogen source, and it is prepared to prepare a slow-release urea fertilizer containing tweet oligosaccharide: the raw material is based on 92 servinals, and 4 nitrose oligosaccharides, 0.5 parts of polyteenine, 0.05 parts nitrification inhibitor (3, 4-dimethylpyrazole phosphate, DMPP), 5 parts of an ethylcellulose copolymer, industrial ethanol solution 500ml; wherein the nitrogen having a nitrogen in urea particles is 50%, the particle size is 0.5 mm; the molecular weight is: 4000, Polyteenine of structural formula C4H6NO3.

[0023] Preparation:

[0024] 1) Formulated suspension: 5 parts of the copolymer of ethylcellulose dissolve into 500 ml of industrial ethanol solution, and then 4 drown ol oligosaccharides, 0.5 parts of polyteenine, 0.05 parts nitrification inhibitor (3, 4- Dimethylpyrazole phosphate, DMPP) mixed and uniformly added, stirred and uniform copolymers composition mixed suspension solution, to be used.

[0025] 2) Use flui...

Example Embodiment

[0026] Example 3:

[0027] Uroa is a nitrogen source, the preparation of slow-release urea fertilizer containing molar olegose is: the raw material is based on 92 parts of urea particles, 4 yellow oligosaccharides, 0.5 parts of polyteenine, 0.05 serviles (N- Butyl thiophosphorimine, Nbpt) and nitrification inhibitor (3,4-dimethylpyrazolium phosphate, DMPP) mixture, 5 parts of ethylcellulose copolymer, industrial ethanol solution 500ml; urea particles The nitrogen is 50%, the particle size is 0.5 mm; the molecular weight is: 4000, the polyteenine of the structural formula C4H6NO3.

[0028] Preparation:

[0029] 1) Formulated a suspension solution: 5 parts of the copolymer of ethylcellulose dissolve into 500 mL of industrial ethanol solution, and then 4 drown oligosaccharides, 0.5 parts of polyteenine, 0.05 serviles (N-butyl) The mixture of phosphorimine, NBPT) and nitrification inhibitors (3,4-dimethylpyrazolic acid salts, DMPP) were mixed, and the uniform copolymer was stirred, an...

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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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