Preparation method and application of liquid selenium-rich fertilizer

A selenium-enriched fertilizer, liquid technology, applied in the direction of fertilization methods, applications, liquid fertilizers, etc., can solve the problems of high labor costs, inorganic selenium residues, low selenium conversion rate, etc., to reduce the number of spraying, increase adhesion, The effect of saving consumption

Inactive Publication Date: 2016-10-26
AGRI RESOURCE & ENVIRONMENT RES INST GUANGXI ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It mainly has the following weaknesses: first, the residual inorganic selenium is serious, which has a potential risk of poisoning; second, the conversion rate of selenium in agricultural products is low, and the cost is high; third, the application process of foliar fertilizer has the risk of burning seedlings to the plant itself; fourth, The workload of multiple spraying is heavy, the labor cost is high, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A liquid selenium-enriched fertilizer is prepared by the following steps:

[0035] (1) Weigh 120 grams of sodium selenite, dissolve it in 3 liters of distilled water or deionized water, and make it into the original mother solution a;

[0036] (2) Shake 3 liters of the original mother solution a with 7 liters of 15%-20% amino acid solution at 35°C-45°C at a frequency of 60-120 swings / minute, and chelate for 48-72 hours to form 10 liters of chelating solution b;

[0037] (3) Add 20 grams of sodium alkylbenzene sulfonate to 10 liters of chelating solution b as an adhesive, and then stir with 10 liters of fermented alcohol fermentation filtrate at 25°C-35°C, stirring The speed is 20-40 rpm, and the secondary chelation is carried out for 36-48 hours to obtain 20 liters of universal liquid selenium-enriched fertilizer.

[0038] Five samples were prepared according to the above steps. After the steps (2) and (3) in the sample preparation process were completed, the chromato...

Embodiment 2

[0041] A liquid selenium-enriched fertilizer is prepared by the following steps:

[0042] (1) Weigh 90 g of sodium selenite, dissolve it in 3 liters of distilled water or deionized water, and make the original mother solution a;

[0043] (2) Mix and shake the original mother liquid a and 15%-20% amino acid solution at 35°C-45°C. The volume ratio of the original mother liquid a to the amino acid solution is 1:2, and the oscillation frequency is 60-120 pendulum times / minute, chelation for 48-72 hours, forming 10 liters of chelation solution b;

[0044] (3) Add 30 grams of sodium alkylbenzenesulfonate to 10 liters of chelating solution b as an adhesive, and then stir with 8 liters of fermented alcoholic fermentation filtrate at 25°C-35°C. The speed is 20-40 rpm, and the secondary chelation is carried out for 36-48 hours to obtain a universal liquid selenium-enriched fertilizer.

[0045] After step (2) and step (3) are completed, the chromatographic separation system, atomic fluor...

Embodiment 3

[0047] A liquid selenium-enriched fertilizer is prepared by the following steps:

[0048] (1) Weigh 150 g of sodium selenite, dissolve it in 3 liters of distilled water or deionized water, and make it into the original mother solution a;

[0049] (2) Mix and shake the original mother liquid a with 15%-20% amino acid solution at 35°C-45°C, the volume ratio of the original mother liquid a to the amino acid solution is 1:3, and the oscillation frequency is 60-120 pendulum times / minute, chelation for 48-72 hours, forming 10 liters of chelation solution b;

[0050] (3) Add 10 grams of sodium alkylbenzenesulfonate to 10 liters of chelating solution b as an adhesive, and then stir with 12 liters of fermented alcoholic fermentation filtrate at 25°C-35°C. The speed is 20-40 rpm, and the secondary chelation is carried out for 36-48 hours to obtain a universal liquid selenium-enriched fertilizer.

[0051] After step (2) and step (3) are completed, the chromatographic separation system,...

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PUM

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Abstract

The invention provides a preparation method and application of a liquid selenium-rich fertilizer. The preparation method of the liquid selenium-rich fertilizer comprises the following steps: dissolving sodium selenite in water to form original mother solution, concentration of the sodium selenite being 30-50 g / l; mixing the original mother solution with amino acid solution with a mass concentration of 15%-20%, a volume ratio of the original mother solution to the amino acid solution being 1:(2-3), and shaking and chelating at 35-45 DEG C for 48-72 h to obtain chelate; adding 1-3 g of sodium alkyl benzene sulfonate per liter of the chelate, stirring and secondarily chelating with alcoholic fermentation filtrate at 25-35 DEG C for 36-48 h, the volume ratio of the alcoholic fermentation filtrate to the chelate being 1:(0.8-1.2) to obtain the liquid selenium-rich fertilizer. In the technical scheme of the invention, 90% or more of inorganic selenium is converted into organic selenium such as selenomethionine and selenocystine, toxin and harm risks are eliminated, and materials are saved.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilization, and in particular relates to a preparation method and application of liquid selenium-enriched fertilizer. Background technique [0002] Most of the liquid selenium-enriched fertilizers on the market are generally sprayed with selenite or selenite after fermentation or complexing agent. At least two or more sprays are required to achieve the goal of selenium-enriched agricultural products. Production. It mainly has the following weaknesses: first, the residual inorganic selenium is serious, which has a potential risk of poisoning; second, the conversion rate of selenium in agricultural products is low, and the cost is high; third, the application process of foliar fertilizer has the risk of burning seedlings to the plant itself; fourth, The workload of multiple spraying is heavy, the labor cost is high, and so on. Contents of the invention [0003] Aiming at the above techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00A01C21/00
CPCA01C21/005C05C11/00C05G5/20C05D9/00C05F5/004C05G3/00
Inventor 刘永贤吴志林农梦玲潘丽萍梁潘霞李文宝黄雁飞
Owner AGRI RESOURCE & ENVIRONMENT RES INST GUANGXI ACADEMY OF AGRI SCI
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