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Humic acid synergia compound fertilizer and preparation method thereof

A technology of humic acid and compound fertilizer, which is applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of difficult popularization and application, high production cost, complicated process, etc., and achieves the effect of simple process, low cost and good effect.

Inactive Publication Date: 2013-01-30
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the complex process, high production cost, low production capacity and high price of the existing compound fertilizer, it is difficult to popularize and apply it on a large scale in agricultural production, especially in field crops.

Method used

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  • Humic acid synergia compound fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Embodiment 1: produce humic acid synergistic compound fertilizer of the present invention

[0073] Crush the weathered coal to 80 mesh, add 0.3% by weight sodium hydroxide solution with a concentration 10 times its weight, heat and continue to boil for 20 minutes, then carry out centrifugation to obtain a supernatant, and concentrate the supernatant to the solid The content of humic acid is 8% by weight to obtain humic acid synergist liquid A.

[0074] Put the humic acid synergist liquid A and urea into the urea melting tank at a weight ratio of 6:62, and fully melt at 120°C to obtain a humic acid-urea molten liquid.

[0075] The granulation materials monoammonium phosphate, potassium sulfate, bentonite and monocalcium phosphate are mixed according to the weight ratio of 18.2:24:10:8.6 and put into the drum granulator.

[0076] Then, adjust the pressure of the pressure pump to 15 atmospheres, spray the previously prepared co-melt on the granulated material at a flow ra...

Embodiment 2

[0077] Embodiment 2: produce humic acid synergistic compound fertilizer of the present invention

[0078] Pulverize lignite to 100 mesh, add 0.5% by weight potassium hydroxide solution with a concentration 12 times its weight, heat and continue to boil for 25 minutes, then carry out centrifugation to obtain a supernatant, and concentrate the supernatant to the solid When the content is 0.5%, humic acid synergist liquid A is obtained.

[0079] Put the humic acid synergist liquid A and urea into the urea melting tank at a ratio of 1:32, and fully melt it under the condition of 110°C to obtain the humic acid urea molten liquid.

[0080] The granulation materials monoammonium phosphate, potassium sulfate, bentonite and calcium dihydrogen phosphate are mixed according to the weight ratio of 32.6:30:6.5, and then put into the drum granulator.

[0081] Then, adjust the pressure of the pressure pump to 12 atmospheres, spray the previously prepared co-melt on the granulated material a...

Embodiment 3

[0082] Embodiment 3: produce humic acid synergistic compound fertilizer of the present invention

[0083] Mix the sulfuric acid aqueous solution with a concentration of 0.1% by weight and sodium humate at a weight ratio of 3:1, stir thoroughly for 15 minutes, and then perform centrifugation to obtain a supernatant, and concentrate the supernatant to a solid content of 0.5% by weight , to obtain humic acid synergist solution B.

[0084] Put the humic acid synergist liquid B and urea into the urea melting tank at a ratio of 4:40, and fully melt at 125°C to obtain a humic acid-urea melt.

[0085] The granulation materials monoammonium phosphate, potassium sulfate, bentonite, calcium magnesium phosphate fertilizer are mixed according to the ratio of 21.7:20:8:12 and put into the drum granulator.

[0086] Then, adjust the pressure of the pressure pump to 18 atmospheres, spray the previously prepared co-melt on the granulated material at a flow rate of 1200kg / h, and rotate with the...

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Abstract

The invention relates to a humic acid synergia compound fertilizer and a preparation method thereof. The method comprises the steps of: preparing a humic acid synergia solution, preparing a granulating material, coating an enveloping layer and drying, screening, cooling and the like. A humic acid synergist disclosed by the invention has the characteristics of being trace and efficient, low in addition volume, free from influence on nutrient content of the fertilizer, and favorable for regulation on the formula, and has the advantages of being high in output, low in cost, good in effect and the like. With the coated humic acid synergia compound fertilizer, the nitrogen utilization efficiency can be improved by 5-10 percentage points by inhibiting the soil urease activity; phosphorus, potassium and medium trace elements in soil can be activated; the absorption of crops is enhanced; and the humic acid synergia compound fertilizer has the characteristics of being excellent in slow release performance, high in utilization rate of butrients in season, and environment-friendly, and is wide in application prospect in specific production practice.

Description

【Technical field】 [0001] The invention belongs to the technical field of fertilizers. More specifically, the present invention relates to a humic acid synergistic compound fertilizer, and also relates to a preparation method of the humic acid synergistic compound fertilizer. 【Background technique】 [0002] Compound fertilizer is an important fertilizer variety in my country. At present, the fertilizer compounding rate in my country is about 32%, and the physical output is about 55 million tons. However, a large number of studies have shown that the nutrient utilization efficiency of existing compound fertilizers is low. For example, the seasonal utilization efficiency of nitrogen is about 30%, that of phosphorus is about 25%, and that of potassium is about 45%. Therefore, how to improve the nutrient utilization efficiency of fertilizers has always been a hot spot of concern and research. In recent years, there are two main ways to improve fertilizer utilization at home and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/90
Inventor 赵秉强袁亮李燕婷林治安温延臣杨相东李娟李日升梁爱新
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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