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Insect-proofing charcoal rot slow-release urea

A slow-release urea and pest control technology, applied in urea compound fertilizers, organic fertilizers, nitrogen fertilizers, etc., can solve problems such as urea pulverization and failure, and achieve the effects of deepening soil color, improving aeration, and reducing fertilization operations.

Inactive Publication Date: 2017-02-08
TIANJIN SHIYIDE FERTILIZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A major problem in the application of humic acid is the reaction between humic acid and urea: urea is easy to react with humic acid to pulverize, deliquescence and become invalid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] Add 4kg of water and 1kg of glycerol into a stirring container, stir evenly, then add 1kg of glucomannan and 1kg of dextrin, stir, heat to 85°C, after the temperature is stable, add 1kg of activated dextrin in sequence Humic acid and 2kg biochar. The solution was stirred for 0.5h.

[0103] In this proportion, the water content is higher, so the heating temperature is higher and the stirring time is longer. Weigh 1kg of the solution, spray it on 20kg of urea in the fluidized bed, stir and mix it thoroughly, and dry it at 85°C after 0.5h to obtain the patented insect-proof charcoal rot slow-release urea.

[0104] This product is suitable for crops or growing environments that require nitrogen to be released as soon as possible. After testing, the release period of nitrogen is 3 months.

Embodiment 2

[0106] Add 3.5kg of water and 1kg of glycerol into a stirring container, stir evenly, then add 1.5kg of glucomannan and 1.0kg of dextrin, stir, heat to 60 ° C, after the temperature is stable, add 2.5 kg kg activated humic acid and 0.5kg biochar. The solution was stirred for 2h.

[0107] Weigh 1kg of the solution, spray it on 100kg of urea in the fluidized bed, stir and mix thoroughly, and dry it at 60°C after 1 hour to obtain the patented insect-resistant charcoal rot slow-release urea.

[0108] This product is suitable for blending fertilizers that require high nitrogen, such as 40-0-0 nitrogen fertilizer, and the cumulative release period of nutrients is 5 months.

Embodiment 3

[0110] Add 2kg of water and 3.5kg of glycerol into a stirring container, stir evenly, then add 0.5kg of glucomannan and 1kg of dextrin, stir, heat to 85°C, after the temperature is stable, add 1.5kg in turn Activated humic acid and 1.5kg biochar. The solution was stirred for 1 h.

[0111] Weigh 1kg of the solution, mix it with 40kg of urea in the fluidized bed, stir it thoroughly, and dry it at 60°C after 1 hour to obtain the patented insect-resistant carbon rot slow-release urea.

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PUM

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Abstract

The invention aims to provide insect-proofing charcoal rot slow-release urea. The technical scheme comprises that the slow-release urea is composed of 1 to 5.5 parts by mass of a slow-release film-coating agent and 94.5 to 99 parts by mass of urea. The slow-release film-coating agent comprises the raw materials: activated humic acid, biochar, glucomannan, dextrin, glycerol and water. The insect-proofing charcoal rot slow-release urea has the beneficial effects that the film-coating agent plays a role in slow-releasing urea nutrients, prolongs the urea nutrient release period and reduces the operation process of fertilizer application. Humic acid in the film-coating agent has an effect of inhibiting on the activity of urease on decomposing urea, the ammonia stability performance is kept, and nutrients are released gradually. Biochar can play roles in improving the soil ability and keeping the balance of water and fertilizers, and also has the effect of expelling insects.

Description

technical field [0001] The invention relates to the technical field of agricultural chemical fertilizers, in particular to an insect-resistant carbon rot slow-release urea. Background technique [0002] Urea, the molecular formula is CO(NH 2 ) 2 , Molecular mass 60. Urea is easily soluble in water. At 20°C, 105 grams can be dissolved in 100 milliliters of water, and the aqueous solution is neutral. [0003] Urea is an organic nitrogen fertilizer. It is currently the nitrogen fertilizer with the highest nitrogen content. It is suitable for base fertilizer and top dressing. As a neutral fertilizer, urea is suitable for various soils and plants. It is easy to store, easy to use, and has little damage to the soil. It is a chemical nitrogen fertilizer that is currently used in large quantities. In practical application, slow-release technology is used to improve the utilization rate of urea. [0004] The existing sustained-release technology mainly adopts the method of coati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/02C05G3/04C05G3/60C05G3/80
CPCC05C9/00C05G3/00C05G3/60C05G3/80C05G5/30C05F11/00C05F11/02
Inventor 武庆树韩述伯宋天月
Owner TIANJIN SHIYIDE FERTILIZER
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