Degradable multinuclear chelated fertilizer and preparation method thereof

A multi-nuclear, iminodisuccinate technology, applied in the field of degradable multi-nuclear chelated fertilizer and its preparation, can solve the problems of restricting the popularization and application of green and environmentally friendly chelated fertilizers, limited leaf surface adsorption, and the inability to metal ions, etc., to achieve high greenness Environmentally friendly use value, improved surface tension, enhanced adsorption effect

Inactive Publication Date: 2019-09-06
SHENZHEN BATIAN ECOTYPIC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although iminodisuccinate (IDS) has the above advantages, in actual implementation, IDS is a mononuclear ligand that cannot bond with all metal ions in the system, and there are excess metal ions outside the free system; And when using the foliage spraying method, the adsorption amount of the foliage is limited, it is easy to volatilize and be washed by rain, and the fertilizer effect period is short, which greatly limits the popularization and application of IDS green environmental protection chelated fertilizer

Method used

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  • Degradable multinuclear chelated fertilizer and preparation method thereof
  • Degradable multinuclear chelated fertilizer and preparation method thereof
  • Degradable multinuclear chelated fertilizer and preparation method thereof

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Experimental program
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Embodiment 1

[0034] After each raw material is weighed according to mass fraction in this embodiment 1, the mass ratio after conversion into percentage is as follows:

[0035] components Proportion(%) IDS 46 citric acid 11 Mannitol 2 Manganese Sulfate Monohydrate 9 Zinc Sulfate Monohydrate 23 Anhydrous copper sulfate 8 KOH 1

[0036] Prepare as follows:

[0037] S10, add the above IDS, citric acid, and mannitol into the reaction kettle, stir at room temperature for 10 minutes, and rotate at a speed of 15 Hz;

[0038] S20, adding KOH, adjusting the pH value to 5.0, forming an acid-base environment for the chelation reaction;

[0039] S30, add the above manganese sulfate monohydrate, zinc sulfate monohydrate, and copper sulfate anhydrous into the reaction kettle, raise the reaction temperature to 80°C, adjust the speed to 30Hz, keep stirring for 1 hour, if there is no dissolution or agglomeration, reduce the temperature Adjust to 90...

Embodiment 2

[0041] After each raw material is weighed according to mass fraction in this embodiment 2, the mass ratio after conversion into percentage is as follows:

[0042] components Proportion(%) IDS 45 citric acid 13 Sorbitol 2.5 Manganese Sulfate Monohydrate 8 Zinc Sulfate Monohydrate 22.5 Calcium acetate monohydrate 7 KOH 2

[0043] S10, add the above IDS, citric acid, and sorbitol into the reaction kettle, stir at room temperature for 10 minutes, and rotate at 20 Hz;

[0044] S20, adding KOH, adjusting the pH value to 5.5, forming an acid-base environment for the chelation reaction;

[0045] S30, add the above manganese sulfate monohydrate, zinc sulfate monohydrate, and calcium acetate monohydrate into the reaction kettle, raise the reaction temperature to 75°C, adjust the speed to 35Hz, keep stirring for 1 hour, if there is no dissolution or agglomeration, adjust the temperature To 90°C, keep the rotation speed at 35Hz, h...

Embodiment 3

[0047] After each raw material is weighed according to mass fraction in this embodiment 3, the mass ratio after conversion into percentage is as follows:

[0048]

[0049]

[0050] S10, add the above IDS, citric acid, and sorbitol into the reaction kettle, stir at room temperature for 10 minutes, and rotate at 20 Hz;

[0051] S20, adding KOH, adjusting the pH value to 5.5, forming an acid-base environment for the chelation reaction;

[0052] S30, add the above manganese sulfate monohydrate, zinc sulfate monohydrate, and calcium acetate monohydrate into the reaction kettle, raise the reaction temperature to 85°C, adjust the speed to 35Hz, keep stirring for 1.5h, if there is no dissolution or agglomeration, the temperature Adjust to 95°C, keep the rotation speed at 35Hz, keep stirring for 45min, and obtain degradable multi-nuclear chelate fertilizer after cooling at room temperature.

[0053] The fertilizer prepared by each of the above embodiments further illustrates the...

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Abstract

The invention discloses degradable multinuclear chelated fertilizer. The fertilizer includes 30-70 parts of iminodisuccinate, 5-20 parts of citric acid, 1-10 parts of sugar alcohols, 10-50 parts of medium and trace element salts, and 1-5 parts of an acid-base regulator. The degradable multinuclear chelated fertilizer of the invention forms a multinuclear ligand by combining the iminodisuccinate, the citric acid and the suger alcohols, which improves the stability of a chelating system, minimizes the existence of excess metal ions, improves the utilization of medium and trace elements, effectively improves the surface tension of a fertilizer solution after foliar fertilizer application of the chelated fertilizer, enhances the adsorption of the chelated fertilizer on leaf surfaces of crops,and prolongs the absorption time of the fertilizer on the leaf surfaces. Moreover, all the components can be completely metabolized and absorbed by plants, can be degraded by soil microorganisms and has the advantages of good safety and no environmental residues.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a degradable polynuclear chelate fertilizer and a preparation method thereof. Background technique [0002] Fertilizer application and practice have proved that the antagonism between large, medium and trace elements is a key issue related to the fertilizer efficiency of multivariate compound fertilizers. Most of the currently used medium and trace elements exist as divalent metal ions, and most of them exist as divalent metal ions. Once applied to the soil and into the plant, it is easy to react with the negative divalent carbonate in it to form water-insoluble carbonate, which affects the absorption effect of plants. Therefore, in order to improve the absorption and utilization of medium and trace elements by crops, it is usually used to combine medium and trace elements with chelating agents to form metal chelates, which can maintain a stable ion form after application. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05D1/00C05G3/00C05D9/02C05F11/00
Inventor 孟品品邓宝元韩冬芳陈贵有朱伟根
Owner SHENZHEN BATIAN ECOTYPIC ENG
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