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Microelement chelating fertilizer and preparation method thereof

A trace element and mixed solution technology, applied in urea compound fertilizer, nitrogen fertilizer, magnesium fertilizer, etc., can solve the problems of poor stability and low chelation rate of trace element chelated fertilizer, and achieve the improvement of stability and chelation rate, and improve chelation rate. Combine rate and ensure the effect of fertilizer efficiency

Inactive Publication Date: 2017-11-07
FUZHOU UNIV ASSET MANAGEMENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the existing trace element chelated fertilizer to be solved by the present invention has the defects of poor stability and low chelation rate, and then provides a kind of trace element chelate fertilizer with good stability, high chelation rate, high absorption rate and fertilizer efficiency, and balanced nutrition. Hefei and its preparation method

Method used

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  • Microelement chelating fertilizer and preparation method thereof
  • Microelement chelating fertilizer and preparation method thereof
  • Microelement chelating fertilizer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0034] The present embodiment provides a kind of trace element chelated fertilizer, by 45g cysteine, 8g magnesium sulfate, 5g ferrous chloride, 7g zinc sulfate, 12g calcium nitrate, 4g manganese nitrate, 6.5g carboxymethyl cellulose, 8g Composed of urea, 5.5g pectin and 1.5g citric acid;

[0035] The preparation method of above-mentioned trace element chelated fertilizer comprises the steps:

[0036] 1) dissolving the above-mentioned soluble metal salt, amino acid, carboxymethyl cellulose, urea, pectin and citric acid in water to obtain a mixed solution, wherein the mass fraction of the amino acid in the mixed solution is guaranteed to be 20%;

[0037] 2) Chelating the mixed solution at 80°C and pH 6.5 for 6.5 hours;

[0038] 3) Aging the mixed solution treated in step 2) at 55° C. for 18 hours;

[0039] 4) Concentrating the mixed liquid treated in step 3), and drying the concentrated liquid at 115°C to obtain a trace element chelated fertilizer.

Embodiment 2

[0041] This embodiment provides a kind of trace element chelated fertilizer, is made of 44g glycine, 8g magnesium nitrate, 4g ferrous nitrate, 7g zinc chloride, 12g calcium nitrate, 5g manganese sulfate, 6g carboxymethyl cellulose, 10g urea, 5g fruit gum and 2g citric acid;

[0042] The preparation method of above-mentioned trace element chelated fertilizer comprises the steps:

[0043] 1) dissolving the above-mentioned soluble metal salt, amino acid, carboxymethyl cellulose, urea, pectin and citric acid in water to obtain a mixed solution, wherein the mass fraction of the amino acid in the mixed solution is guaranteed to be 15%;

[0044] 2) Chelating the mixed solution at 75°C and pH 7 for 8 hours;

[0045] 3) Aging the mixed solution treated in step 2) at 50° C. for 20 h;

[0046] 4) Concentrating the mixed liquid treated in step 3), and drying the concentrated liquid at 130° C. to obtain a trace element chelated fertilizer.

Embodiment 3

[0048] The present embodiment provides a kind of trace element chelated fertilizer, by 46g alanine, 7g magnesium sulfate, 5g ferrous chloride, 6g basic zinc sulfate, 13g calcium chloride, 4g manganese nitrate, 7g carboxymethyl cellulose, Composed of 8g urea, 6g pectin and 1g citric acid;

[0049] The preparation method of above-mentioned trace element chelated fertilizer comprises the steps:

[0050]1) dissolving the above-mentioned soluble metal salt, amino acid, carboxymethyl cellulose, urea, pectin and citric acid in water to obtain a mixed solution, wherein the mass fraction of the amino acid in the mixed solution is guaranteed to be 25%;

[0051] 2) Chelating the mixed solution at 85°C and pH 6 for 9 hours;

[0052] 3) Aging the mixed solution treated in step 2) at 60° C. for 15 hours;

[0053] 4) Concentrating the mixed liquid treated in step 3), and drying the concentrated liquid at 100° C. to obtain trace element chelated fertilizer.

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Abstract

The invention discloses a microelement chelating fertilizer and a preparation method thereof. The microelement chelating fertilizer is prepared from the following raw materials in parts by weight: 40 to 50 parts of amino acid, 5 to 10 parts of soluble magnesium salt, 3 to 6 parts of soluble ferric salt, 5 to 8 parts of soluble zinc salt, 10 to 15 parts of soluble calcium salt, 3 to 6 parts of soluble manganese salt, 5 to 8 parts of carboxymethylcellulose, 5 to 12 parts of urea, 4 to 7 parts of pectin, and 1 to 2 parts of citric acid. Through selecting the carboxymethylcellulose, the pectin, the urea and the citric acid with specific matching ratio for cooperative use, the stability and the chelating rate of the microelement chelating fertilizer are improved, meanwhile, a slow-release property is realized, the persistence of the fertilizer is improved, and the crop yield is increased. Therefore, the microelement chelating fertilizer can be widely applied in crop production.

Description

technical field [0001] The invention belongs to the technical field of chemical fertilizer production, and in particular relates to a trace element chelated fertilizer and a preparation method thereof. Background technique [0002] During the growth process of plants, in addition to a large amount of nitrogen, phosphorus, and potassium, they also need a certain amount of trace elements. If these trace elements are lacking, plants cannot grow normally. The solution to this problem is to apply medium and micro fertilizers. In the case of normal application of nitrogen, phosphorus and potassium, adding fertilizers containing one or more trace elements can balance the elements needed by crops and prevent and control physiological diseases caused by deficiencies. Most of the medium and trace elements used in my country exist in the form of divalent metal ions. Once they are applied to the soil and plants, because of the presence of negative divalent carbonates in the soil and pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05C5/00C05G3/00C05C5/04C05C9/00C05C11/00C05D5/00C05D9/02C05D3/00
Inventor 江莉龙丁音琴詹瑛瑛林性贻
Owner FUZHOU UNIV ASSET MANAGEMENT CO LTD
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