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Preparation method for special amino acid chelating liquid-containing composite coated base fertilizer for rape

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

Inactive Publication Date: 2012-12-19
好生活农产品集团有限公司
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  • Summary
  • 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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Embodiment Construction

[0017] A kind of preparation method of compound coated fertilizer containing amino acid chelating liquid special for rapeseed base fertilizer, it is characterized in that: comprise the following steps:

[0018] (1) Mix raw materials 1-2 parts by weight of calcium carbonate, 0.1-0.5 parts by weight of iron ore, 1-2 parts by weight of dolomite, 1-2 parts by weight of potassium feldspar, 2-4 parts by weight of slag, and then mix them in 400 After burning at -500°C for 6-8 hours, add vegetable oil of 1-2% of the total weight of the above-mentioned raw materials and grind it into a powder, mix it with 2-4 parts by weight of fly ash to obtain a compound powder for use;

[0019] (2) First add animal feathers to 25-35% 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, per 15 parts by weight Add 3-4 parts by weight of carboxymethyl cellulose to the hydrolyzate, then add 1-2 parts...

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Abstract

The invention discloses a preparation method for a special amino acid chelating liquid-containing composite coated base fertilizer for rape. The preparation method comprises the following steps: uniformly mixing 25 to 30 parts by weight of urea, 10 to 12 parts by weight of diammonium phosphate, 10 to 15 parts by weight of calcium superphosphate, 18 to 22 parts by weight of potassium chloride, 12 to 15 parts by weight of magnesium sulfate, 0.1 to 0.2 part by weight of borax, 1 to 3 parts by weight of catnip powder, 1 to 2 parts by weight of diatomite, 3 to 5 parts by weight of compound powder; then spraying 4 to 6 parts of amino acid chelating liquid and 4 to 5 parts by weight of bonding liquid and carrying out granulation so as to obtain composite fertilizer particles; and sprinkling 8 to 10 parts by weight of molten paraffin on the surface of 100 parts by weight of the composite fertilizer particles to realize coating so as to obtain the special composite coated base fertilizer for rape. According to the invention, a variety of nutrient elements needed in growth of the rape are reasonably compounded to prepare the fertilizer, and the fertilizer has the advantages of a light weight and excellent water retention, fertilizer retention and slow release performance.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a method for preparing a composite coated fertilizer containing amino acid chelating liquid special for rapeseed base fertilizer. 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 inconvenien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G5/00
Inventor 杨柳唐旺全杨红兵
Owner 好生活农产品集团有限公司
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