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Method for preparing microelement fertilizer from ammonium aspartate

A technology of ammonium aspartate and trace element fertilizers, applied in the agricultural field, can solve the problems of affecting crops, not suitable for precise fertilization due to the principle of lack of fertilizers, absorption, etc., and achieve the effect of low production costs

Inactive Publication Date: 2019-06-28
杨清桦 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there are many trace elements in the inorganic state, it will not only affect the absorption of crops, but also may cause poisoning; secondly, this method produces a preparation containing iron, manganese, zinc, copper, and molybdenum elements with a fixed composition, which is not suitable for The principle of precise fertilization due to lack of fertilizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 1 kg of 40% by weight ammonium aspartate aqueous solution, add 0.665 kg of ferrous sulfate 7 hydrate, heat to 80°C under stirring, heat to boiling after stirring for 2 hours, and dehydrate to form a paste When the temperature was lowered to room temperature, 2 liters of absolute ethanol was slowly added under stirring, and the ethanol was removed to obtain 0.763 kg of the mixture. Pulverize in an environment with an ambient humidity lower than 45%, and pass through a 100-mesh sieve to obtain a mixture containing aspartic acid chelated iron. The mixture contains 41.7% amino acid, 17.5% iron and 9.09% inorganic nitrogen.

[0019] Get 572 grams of aspartic acid chelated iron mixture, 268.8 grams of urea, 30 grams of potassium bicarbonate, 19.2 grams of anhydrous citric acid, mix and pulverize, pass through a 100 mesh sieve to obtain fertilizer powder; get 10 grams of povidone, dissolve In 100 milliliters of absolute ethanol, obtain povidone ethanol solution. Add the...

Embodiment 2

[0021] Take 1 kg of 40% by weight ammonium aspartate aqueous solution, add 0.404 kg of manganese sulfate 1 water, heat to boiling while stirring, and dehydrate to obtain 0.761 kg of the mixture. After being crushed and passed through a 100-mesh sieve, it contains aspartic acid chelated manganese mixture. The mixture contains 41.83% amino acid, 17.08% manganese and 9.09% inorganic nitrogen.

[0022] Get 586 grams containing aspartic acid chelated manganese mixture, 255 grams of urea, all the other are with embodiment 7, get 1000 effervescent tablets containing manganese 10%.

Embodiment 3

[0024] Take 1 kg of ammonium aspartate aqueous solution with a weight percentage of 40%, add 0.666 kg of zinc sulfate 7 water, adjust the pH to 5 with citric acid under stirring, heat to 70°C, continue stirring for 2 hours, and heat to boiling , dehydrated to obtain a mixture of 0.786 kg. After crushing and passing through a 100-mesh sieve, a mixture containing aspartic acid chelated zinc is obtained. The mixture contains 40.4% amino acid, 19.28% zinc and 9.09% inorganic nitrogen.

[0025] Get containing aspartic acid chelated zinc mixture 519 grams, urea 322 grams, all the other are with embodiment 7, get 1000 zinc-containing 10% effervescent tablets.

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PUM

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Abstract

The invention provides a method for preparing a microelement fertilizer from ammonium aspartate. The method comprises the steps that sulfate or a molybdenum compound is added into an ammonium aspartate water solution, heating and stirring are conducted to obtain an aspartate chelate, and after dehydration, a fertilizer containing the aspartate chelate is prepared; the microelement fertilizer is prepared by adding additives. By means of the method, the three wastes are not generated, and the method is environmentally friendly and low in production cost.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a method for preparing trace element fertilizers by using ammonium aspartate. Background technique [0002] Amino acids are important sources of soil organic nitrogen and account for a considerable proportion of soil organic nitrogen. Plants can absorb and utilize amino acids, which is one of the ways to obtain nitrogen sources. Studies have shown that plants can absorb free amino acids in the soil, and amino acids can also be used by plants when they coexist with inorganic nitrogen. [0003] Aspartic acid is an important amino acid that constitutes protein and is ubiquitous in living organisms. Using aspartic acid chelate as fertilizer, plants can absorb quickly and have high utilization rate. [0004] As an acidic amino acid, aspartic acid can easily form chelates with stable chemical properties and high biological activity with iron, manganese, zinc and copper in minerals. [00...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 秦怀跃
Owner 杨清桦