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Method for preparing crop nutrient solution with chitosan oligosaccharide chelate ferrous zinc

A technology containing chitosan oligosaccharide and chelated iron, which is applied in the preparation of organic fertilizers, fertilizer mixtures, liquid fertilizers, etc., can solve the problems of extensive production process, complex raw material components, and product quality cannot be guaranteed, and achieves low equipment requirements. , the production process is simple, the effect of increasing the amount of chelation

Inactive Publication Date: 2017-05-31
YANTAI GOODLY BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production cost of the biotransformation method is relatively low, but the raw material composition is complex, the production process is extensive, and the product quality cannot be guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Stir 10kg of chitosan, 10kg of citric acid, and 900L of water until fully dissolved, add 1kg of rhamnose and 0.5kg of ammonium sulfate, and ferment under airtight conditions at room temperature, and stop the fermentation when the viscosity of the chitosan solution is less than 20mPa·s;

[0025] 2) Take the supernatant from step 1) and add dilute nitric acid to adjust the pH value to 2.5, add 25kg of ferrous sulfate, heat up to 55°C, and keep warm for 2 hours;

[0026] 3) Add an appropriate amount of calcium carbonate to adjust the pH value to 4.5, add 30kg of zinc nitrate, raise the temperature to 65°C, and keep it warm for 1 hour;

[0027] 4) Stand for stratification, re-filter the supernatant, compound 120kg of amino acid powder, 90kg of fish protein powder, and 100kg of seaweed extract, and fill it into an agricultural quick-acting nutrient solution.

[0028] 5) The nutrient solution is directly sprayed on the apple tree, sprayed once every 7 days during the growt...

Embodiment 2

[0030] 1) Stir 20kg of chitosan, 20kg of citric acid, and 1000L of water until fully dissolved, add 2kg of rhamnose and 1kg of ammonium sulfate, and ferment under airtight conditions at room temperature, and stop the fermentation when the viscosity of the chitosan solution is less than 20mPa·s;

[0031] 2) Take step 1) and add phosphoric acid to the supernatant to adjust the pH value to 3.0, add 40kg of ferrous sulfate, heat up to 65°C, and keep warm for 2 hours;

[0032] 3) Add an appropriate amount of calcium carbonate to adjust the pH value to 5.0, add 80kg of zinc chloride, raise the temperature to 70°C, and keep it warm for 1 hour;

[0033] 4) Stand for stratification, re-filter the supernatant, compound 200kg amino acid solution, 150kg fish protein solution, 150kg seaweed extract solution, and fill it into an agricultural quick-acting nutrient solution.

[0034] 5) Apply the nutrient solution to the tomato roots, once every 15 days during the growth period, twice in tota...

Embodiment 3

[0036] 1) Stir 5kg of chitosan, 7.5kg of citric acid, and 450L of water until fully dissolved, add 1.35kg of rhamnose and 0.45kg of ammonium sulfate, and ferment under airtight conditions at room temperature, and stop the fermentation when the viscosity of the chitosan liquid is less than 20mPa·s;

[0037] 2) Take step 1) and add sulfuric acid to the supernatant to adjust the pH value to 2.5, add 15kg of ferrous chloride, heat up to 70°C, and keep warm for 2 hours;

[0038] 3) Add an appropriate amount of calcium carbonate to adjust the pH value to 5.0, add 25kg of zinc nitrate solution, raise the temperature to 65°C, and keep it warm for 1 hour;

[0039] 4) Stand for stratification, re-filter the supernatant, compound 250kg amino acid solution, 100kg fish protein solution, and 200kg seaweed extract and fill it to get agricultural quick-acting nutrient solution.

[0040] 5) Apply the nutrient solution to the spinach once every 10 days, twice in total. It can be seen that the ...

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Abstract

The invention relates to a method for preparing a crop nutrient solution from low molecular weight chitosan oligosaccharide chelate ferrous ions and zinc ions. The method comprises the following steps: dissolving chitosan in an acid solution, adding a small amount of rhamnose and ammonium sulfate, performing anaerobic fermentation for 7-10 days, adding acid into supernate to adjust the pH value to 1-4, adding a ferrite solution, heating to 55-70 DEG C, keeping the temperature for 2 hours, adding a proper amount of calcium carbonate to adjust the pH value to 4-6, adding a zinc solution, heating to 65-75 DEG C, keeping the temperature for 1 hour, leaving to sand to layer the solution, and repeatedly filtering the supernate, thereby obtaining the crop nutrient solution. By adopting the crop nutrient solution, elements of iron and zinc essential for crops can be effectively supplemented, little leaves and chlorotic disorder can be prevented and relieved, the content of heavy metals in fruits and vegetables can be reduced, the quality can be improved, and the yield can be increased.

Description

technical field [0001] The invention relates to a preparation method of crop nutrient solution, belonging to the technical field of fertilizer production. Background technique [0002] Both iron and zinc are essential trace elements for crop growth. Iron is an essential element for the formation of chlorophyll, and is also a component of various oxidases, ferritin and nitrogenase in plants. Zinc is closely related to protein synthesis, young leaf meristem, mineral element content in mature leaf, cell membrane integrity, and carbohydrate metabolism. Due to the low absorption and utilization efficiency of inorganic iron fertilizer or zinc fertilizer, it has been gradually eliminated in recent years. Screening high-quality carriers to produce high-efficiency chelates is the current research focus of trace element fertilizers. [0003] Patent CN201010516714.X uses squid ink melanin to chelate iron ions under certain conditions; patent CN201410042456.4 discloses a method for p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05C3/00C05G3/00C05G5/23C05C11/00C05D3/02C05D9/02C05F11/00C05F17/00
Inventor 高筱莎常大勇常晓菲
Owner YANTAI GOODLY BIOTECH
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