Preparation method and application of selenium-enriched cadmium-resistant foliar fertilizer special for rice

A technology for foliar fertilizer and rice is applied in the field of preparation of selenium-enriched and cadmium-resistant foliar fertilizer for rice, which can solve the problems of low conversion rate of selenium in agricultural products, residual inorganic selenium, and high labor costs, eliminate the risk of burning seedlings, increase Adhesion, the effect of saving usage

Inactive Publication Date: 2016-08-03
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

This method mainly has the following weaknesses: first, the residual inorganic selenium is serious, which has potential poisoning risks; second, the conversion rate of selenium in agricultural products is low, an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A special selenium-enriched and cadmium-resistant foliar fertilizer for rice is prepared by the following steps:

[0031] (1) Weigh 100 grams of sodium nitrite, 80 grams of zinc sulfate heptahydrate, 70 grams of manganese sulfate, and 100 grams of agricultural ferrous sulfate heptahydrate, dissolve them in 2 liters of distilled water or deionized water, and make the original mother liquor a;

[0032] (2) Shake 2 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 48-60 hours to form 9 liters of chelating solution b;

[0033] (3) Mix 9 liters of chelating solution b with 1 liter of aqueous solution containing 2 kg / L monosilicic acid to prepare 10 liters of mixed solution c;

[0034] (4) Add 20 grams of sodium alkylbenzene sulfonate chemically pure to 10 liters of mixed liquid c as an adhesive, and then stir with 10 liters of fermented sucrose alcohol fermentation filtr...

Embodiment 2

[0039] A special selenium-enriched and cadmium-resistant foliar fertilizer for rice is prepared by the following steps:

[0040](1) Weigh 120 grams of sodium nitrite, 60 grams of zinc sulfate heptahydrate, 80 grams of manganese sulfate, and 80 grams of agricultural ferrous sulfate heptahydrate, dissolve them in 2 liters of distilled water or deionized water, and make the original mother liquor a;

[0041] (2) Shake the original mother liquid a and 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 swings / minute, Chelate for 48-60 hours to form chelate solution b;

[0042] (3) Mix the chelating liquid with an aqueous solution with a monosilicic acid content of 1.5 kg / L at a volume ratio of 10:1 to form a mixed liquid c;

[0043] (4) Add the adhesive sodium alkylbenzene sulfonate to the mixed liquid c obtained in step (3), and add 1 g of the sodium alkylbenzene sulfona...

Embodiment 3

[0046] A special selenium-enriched and cadmium-resistant foliar fertilizer for rice is prepared by the following steps:

[0047] (1) Weigh 80 grams of sodium nitrite, 90 grams of zinc sulfate heptahydrate, 65 grams of manganese sulfate, and 110 grams of agricultural ferrous sulfate heptahydrate, dissolve them in 2 liters of distilled water or deionized water, and make the original mother liquor a;

[0048] (2) Shake the original mother liquid a and 15% amino acid solution at 35°C-45°C, the volume ratio of the original mother liquid a to the amino acid solution is 1:4, and the oscillation frequency is 60-120 swings / minute, Chelate for 48-60 hours to form chelate solution b;

[0049] (3) Mix the chelating solution with an aqueous solution with a monosilicic acid content of 2.5kg / L at a volume ratio of 8:1 to form a mixed solution c;

[0050] (4) Add the adhesive sodium alkylbenzene sulfonate to the mixed liquid c obtained in step (3), and add 3 g of the sodium alkylbenzene sulf...

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Abstract

The invention provides a preparation method and application of a selenium-enriched cadmium-resistant foliar fertilizer special for rice .The preparation method of the selenium-enriched cadmium-resistant foliar fertilizer special for the rice comprises the following steps that sodium selenite, zinc sulfate, manganese sulfate and ferrous sulfate are dissolved in water and prepared into an original mother liquid, wherein the concentration of sodium selenite ranges from 30 g/l to 60 g/l; the original mother liquid is mixed with an amino acid solution of which the mass concentration ranges from 15% to 20%, shaking chelating is conducted, and a chelating liquid is obtained; the chelating liquid and a single silicic acid aqueous solution are mixed to be uniform to be prepared into a mixed liquid; sodium alkyl benzene sulfonate is added, the mixture and filtrate obtained through saccharose alcohol fermentation are stirred at 25 DEG C to 35 DEG C for secondary chelating, and the selenium-enriched cadmium-resistant foliar fertilizer special for the rice is obtained .By means of the preparation method and application of the selenium-enriched cadmium-resistant foliar fertilizer special for the rice, 90% or above of inorganic selenium is converted into organic selenium such as selenomethionine and selenocystine, the poisoning risk is eliminated, the absorption conversion rate of selenium is increased, the raw material amount is reduced, the cost is reduced, and the rice has a good cadmium-resistant property.

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 a special selenium-enriched and cadmium-resistant foliar fertilizer for rice. Background technique [0002] At present, most of the selenium-enriched foliar fertilizers on the market generally use selenite or selenite to be fermented or complexed for multiple foliar sprays. Spray once respectively at the beginning of heading, and generally need to spray more than twice to realize the production of selenium-enriched agricultural products. This method mainly has the following weaknesses: First, the residual inorganic selenium is serious, which has a potential risk of toxicity; 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 plants themselves; The 4th, repeated spraying work...

Claims

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Application Information

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IPC IPC(8): C05G3/00A01C21/00
CPCC05G3/00A01C21/005C05C11/00C05D9/00C05D9/02C05F11/00
Inventor 刘永贤农梦玲潘丽萍黄雁飞危向峰吴志林梁潘霞熊柳梅
Owner AGRI RESOURCE & ENVIRONMENT RES INST GUANGXI ACADEMY OF AGRI SCI
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