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Preparation method of composite coated fertilizer containing amino acid chelating solution specially used for soybean basal fertilizer

A compound fertilizer and amino acid technology, applied in the field of preparation of compound coated fertilizers, can solve problems such as lack of pertinence, achieve slow release, excellent slow release performance, and increase nutrition

Active Publication Date: 2012-12-12
南通惠农生物有机肥有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing coated fertilizers lack pertinence

Method used

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Examples

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Embodiment Construction

[0017] A kind of preparation method of the compound coating fertilizer special-purpose containing amino acid chelating liquid of soybean base fertilizer, comprises the following steps:

[0018] (1) Mix raw materials 3kg calcium carbonate, 1kg iron ore, 1kg dolomite, 1kg potassium feldspar, 1kg slag, burn at 500°C for 6 hours, add 1% of the total weight of the above raw materials and grind them into powder , after mixing with 4kg fulvic acid by weight, the compound powder is ready for use;

[0019] (2) First add animal feathers to 30% sulfuric acid and hydrolyze at 100-110°C for 1-2 hours to generate amino acids, then add lime to neutralize to a pH value of 6.0-6.8 to obtain a hydrolyzate, add 3kg per 15kg of hydrolyzate Carboxymethyl cellulose, then add 1kg of ferrous sulfate and 3kg of ammonium molybdate to dissolve, and react at 90-105°C for 5-6 hours to obtain the amino acid chelating solution for later use;

[0020] (3) Mix 10kg of urea, 25kg of diammonium phosphate, 20kg...

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Abstract

The invention discloses a preparation method of a composite coated fertilizer containing amino acid chelating solution specially used for a soybean basal fertilizer. The preparation method comprises the steps of mixing the following materials by weight: 10-12 parts of urea, 22-25 parts of diammonium phosphate, 18-22 parts of potassium chloride, 2-5 parts of zinc sulfate, 1-2 parts of borax, 1-3 parts of radix sophorae flavescentis powder, 1-2 parts of gelatin powder, and 3-5 parts of compound powder; spraying 4-6 parts of amino acid chelating solution and 4-5 parts of a binding solution; granulating to obtain compound fertilizer granules; and spraying 7-10 parts of molten paraffin wax to surface of 100 parts of the fertilizer granules and then coating. The preparation method reasonably formulates various nutrition elements required by soybean growth to obtain the composite fertilizer with light weight, and excellent water-retaining, fertilizer-retaining and sustained-release properties.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a method for preparing a compound-coated fertilizer specially used for soybean base fertilizers containing amino acid chelating liquid. Background technique [0002] Coated fertilizers are also called coated fertilizers and film fertilizers. Fertilizers made of quick-acting fertilizer granules wrapped with semi-permeable or impermeable film substances. Film-forming substances include plastics, resins, paraffin, polyethylene and elemental sulfur. The purpose of the coating is to slowly release the quick-acting nutrients in the coated fertilizer after it is applied to the soil, so as to prolong the fertilizer effect. The release rate depends on the type of coating, thickness, particle size, fertilizer solubility, soil temperature, soil water content, and soil microbial activity. It is suitable for crops with high economic value, long growth period, large amount of fertilizer but incon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/02C05G3/60C05G3/90
Inventor 杨柳唐旺全杨红兵
Owner 南通惠农生物有机肥有限公司
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