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Humic acid chelating slow release fertilizer special for rice and preparation method thereof

A special fertilizer, humic acid technology, applied in fertilizer mixtures, applications, fertilization devices, etc., can solve the problems of crop growth restriction, high concentration of harmful ions, unbalanced soil fertility, etc., to reduce energy consumption, improve crop quality and Yield, the effect of promoting fertilizer efficiency

Inactive Publication Date: 2016-01-27
天津芦阳肥业股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the extensive use of chemical fertilizers for a long time has also caused excessive soil salinity, excessive concentration of harmful ions, poor structure, easy compaction, uneven fertility in the soil, decreased fertility, and restricted crop growth and development.

Method used

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  • Humic acid chelating slow release fertilizer special for rice and preparation method thereof

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preparation example Construction

[0024] The preparation method of described humic acid chelated slow-release rice special fertilizer comprises the following steps:

[0025] (1) In the production of compound fertilizer by the acid method, the measured humic acid, zinc sulfate, sulfuric acid and water are added in proportion to the sealed reaction tank, heated and stirred for 10-15 minutes, and the temperature is 60-80°C, A mixed solution with a concentration of 70%-80% by mass percentage, for standby;

[0026] (2) Liquid ammonia is added to the tubular reactor, mixed with the mixed solution prepared from step (1) in the tubular reactor to make a mixed slurry, and the acidification and reaction of humic acid are completed by utilizing a large amount of heat of reaction of the acid reaction The chelation of humic acid and medium and trace elements combines the chelation process of medium and trace elements with the production process of compound fertilizer by the acid method, which reduces the chelation equipmen...

Embodiment 1

[0031] Embodiment 1: 20-13-12 products

[0032] 1. Put 100 kilograms of humic acid (mass percentage, the same below, containing 65 percent organic matter), 20 kilograms of zinc sulfate (containing sulfur and zinc elements), and 40 kilograms of concentrated sulfuric acid (containing sulfur elements) with a concentration of 98% in a reaction tank Neutralize and 105 kg of water to make a mixed solution with a mass percentage concentration of 75% and a temperature of 80°C, heat and stir for 15 minutes, and set aside;

[0033] 2. Add 50 kg of liquid nitrogen to the tubular reactor after metering, pump the mixed solution prepared in step 1 into the tubular reactor to make a mixed slurry, and use the reaction heat of acid to complete the humification Acidification of acid and chelation of humic acid and trace elements;

[0034] 3. Add 280 kg of urea (containing N46.2%) and powdered monoammonium phosphate (containing N12%, P 2 o 5 53%) 250 kg, potassium chloride (containing K 2 (0...

Embodiment 2

[0037] Embodiment 2: 22-13-10 product

[0038] 1. 90 kilograms of humic acid (mass percentage, the same below, containing 65% organic matter), 20 kilograms of zinc sulfate (containing sulfur and zinc elements), and 40 kilograms of concentrated sulfuric acid (containing sulfur elements) with a concentration of 98% are placed in a reaction tank Neutralize and 112.5 kg of water to make a mixed solution with a mass percentage concentration of 75% and a temperature of 80°C, heat and stir for 15 minutes, and set aside;

[0039]2. Add 50 kg of liquid nitrogen to the tubular reactor after metering, pump the mixed solution prepared in step 1 into the tubular reactor to make a mixed slurry, and use the reaction heat of acid to complete the humification Acidification of acid and chelation of humic acid and trace elements;

[0040] 3. Add 325 kg of urea (containing N46.2%) and powdered monoammonium phosphate (containing N12%, P 2 o 5 53%) 245 kg, potassium chloride (containing K 2 (26...

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Abstract

The present invention discloses a humic acid chelating slow release fertilizer special for rice and a preparation method thereof, and humic acid, urea, monoammonium phosphate, potassium chloride, liquid ammonia, zinc sulfate, liquid sodium silicate and concentrated sulfuric acid are added during dosing. The preparation method is as follows: by use of ammonia-acid method compound fertilizer production equipment, the humic acid, the zinc sulfate, the sulfuric acid and water are prepared into a mixed solution, the mixed solution and the liquid ammonia are in a tubular reactor to complete humic acid acidification and medium-trace element chelating, and mixed slurry is used as granulation liquid phase amount to complete material granulation process. The humic acid chelating slow release fertilizer can obtain slow-release function by coating of fertilizer granules with the liquid sodium silicate, can ensure the needs of the whole growing season of the rice by one-time fertilizer application, the ratio of nutrients, rich medium-trace elements and organic matters are more suitable for rice growing needs, and the humic acid chelating slow release fertilizer also has the effects of promotion of fertilizer efficiency increase, improvement and repair of soil, and improvement of crop yield and quality.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a humic acid chelated slow-release special fertilizer for rice and a preparation method thereof. Background technique [0002] "A single flower in a crop depends entirely on fertilizer", the widespread use of chemical fertilizers in my country's agricultural production for many years has made great contributions to agricultural development, farmers' income increase and rural prosperity. However, the extensive use of chemical fertilizers for a long time has also caused excessive soil salinity, excessive concentration of harmful ions, poor structure, easy compaction, uneven fertility in the soil, decreased fertility, and restricted crop growth and development. According to data, soil pollution in my country is becoming more and more serious, and saline-alkaline soil is growing rapidly. Improving the soil and protecting the ecological environment have attracted grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 李云利
Owner 天津芦阳肥业股份有限公司
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