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Functional fertilizer capable of improving soil structure and preparing method thereof

A technology to improve soil and function, applied in the direction of inorganic fertilizers, ammonium salt fertilizers, fertilizer mixtures, etc., can solve the problems of inability to realize scale-up production, limit laboratory scale, limit large-scale industrial production, etc., and achieve soil compaction improvement and improvement, Ease of technology promotion and simple production equipment

Inactive Publication Date: 2016-11-09
SHENYANG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the water-retaining slow-release and controlled-release fertilizers reported in existing articles and published patents have the following problems: the preparation of part of the water-retaining slow-release / controlled-release fertilizers uses slow-release and controlled-release fertilizers in the reactor, triggering polymerization and encapsulation. Layer water retaining agent is limited to the laboratory scale, and it cannot be scaled up in technology, which greatly limits its large-scale industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of a functional fertilizer for improving soil structure, the steps of the method are as follows:

[0029] (1) Weigh 20 kg of potassium polyacrylate, 15 kg of polyacrylamide, and 5 kg of hydroxypropyl cellulose, and put them into a high-speed pulverizer to pulverize them into powders with a particle size of <0.05 mm.

[0030] (2) Weigh 190kg of powdery urea, 87kg of powdery diammonium phosphate, 74kg of powdery potassium chloride, 2.5kg of zinc sulfate, 2.5kg of borax, 0.5kg of ammonium tetramolybdate, 2kg of sodium metasilicate and 2.5 kg of ferrous sulfate. kg into the pre-mixing device for pre-mixing, the above mixture is pre-mixed and ready to enter the next process and enter the mixing reaction device.

[0031] (3) Add the powdered material initially mixed in (2) into a reactor with temperature control facilities and a stirring device, and slowly add the powder of (1) to the stirred material in the reactor with a feeding device , and at the sam...

Embodiment 2

[0035] A preparation method of a functional fertilizer for improving soil structure, the steps of the method are as follows:

[0036] (1) Weigh 15 kg of potassium polyacrylate, 25 kg of polyacrylamide, and 5 kg of carboxymethyl cellulose, and put them into a high-speed pulverizer to pulverize them into powders with a particle size of <0.05 mm for use in the next process.

[0037] (2) Put 100kg of powdered urea, 180kg of powdered ammonium chloride, 375kg of powdered monoammonium phosphate, 280kg of powdered potassium chloride, 5kg of zinc sulfate, 2kg of borax and 40kg of other additives into the granulator, and simultaneously put 25kg of liquid ammonia and 25kg of sulfuric acid are evenly sprayed on the surface of the material through different infusion pipelines for granulation. After the granulation is completed, dry and sieve to obtain a 16-16-16 granular compound fertilizer for use in the next process.

[0038] (3) 930kg of the 16-16-16 granular compound fertilizer made in...

Embodiment 3

[0042] A preparation method of a functional fertilizer for improving soil structure, the steps of the method are as follows:

[0043] (1) Weigh 25 kg of polyacrylamide and 5 kg of carboxymethyl cellulose into a high-speed pulverizer to pulverize into a powder with a particle size of <0.05 mm for use in the next process.

[0044] (2) 100kg of powdery urea, 180kg of powdery ammonium chloride, 375kg of powdery monoammonium phosphate, 280kg of powdery potassium chloride, 4kg of zinc sulfate, 36kg of mixed powder made by borax and (1) are put into the granulator At the same time, 25kg of liquid ammonia and 40kg of sulfuric acid are evenly sprayed on the surface of the material through different infusion pipelines for granulation. After the granulation is completed, dry and sieve to obtain 16-16-16 granular compound fertilizer with the function of water retention and loose soil.

[0045] The field water holding capacity of the water-retaining and loose soil fertilizer treated by the...

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Abstract

The invention discloses a functional fertilizer capable of improving the soil structure. The functional fertilizer is prepared from, by mass, 85-98% of water-soluble fertilizer and 2-15% of water-retaining agent. The water-retaining agent is the combination of one or two of potassium polyacrylate, carboxymethylcellulose and hydroxy propyl cellulose and polyacrylamide. The functional fertilizer can achieve fertilizer and water retaining as well as soil loosening, and can improve soil hardening caused by long-term chemical fertilizer application in agricultural practice in China to a certain degree; the functional fertilizer also meets the urgent demand of western drought areas of China for water retaining.

Description

technical field [0001] The invention relates to the technical field of agricultural fertilizers, in particular to a functional fertilizer for improving soil structure and a preparation method thereof. Background technique [0002] Chemical fertilizers have a history of more than half a century in China and play a pivotal role in the development of agricultural production. my country is a large agricultural country, and the proportion of chemical fertilizers in agricultural production investment accounts for about 50%, but the utilization rate of fertilizers in our country is only 30%, which causes a huge waste of economic energy and various environmental problems. If there is no application of chemical fertilizers, China's grain production will be reduced by one-third or more. However, with the increasing input of chemical fertilizers, its negative impact has gradually emerged. At present, due to the long-term and large-scale application of chemical fertilizers in agricult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B7/00C05G3/00C05G3/80C05G5/12C05G5/30C05C3/00C05C9/00C05D1/02C05D9/02
Inventor 刘兴斌王月韩晓日杨劲峰战秀梅刘侯俊刘宁刘轶飞李娜罗培宇常壮关之昊曹靓雅马京莹董鑫
Owner SHENYANG AGRI UNIV
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