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Fertilizer for reducing rice cadmium content, preparation method and application thereof

A fertilizer and rice technology, which is applied in the field of preparation and fertilizers to reduce cadmium content in rice, can solve problems such as human health and safety hazards, achieve the effect of inhibiting migration and reducing cadmium content in rice

Inactive Publication Date: 2018-12-18
JIANGSU HONGYU ENVIRONMENTAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cadmium (Cd) element pollution ranks second among the "five poisonous" elements (mercury, cadmium, lead, chromium, arsenic). Excessive heavy metal cadmium is one of the quality and safety problems of rice, and there is a huge safety hazard to human health

Method used

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  • Fertilizer for reducing rice cadmium content, preparation method and application thereof

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preparation example Construction

[0043] The embodiment of the present invention also provides a method for preparing a fertilizer for reducing cadmium content in rice as described above, including:

[0044] For the preparation of the first intermediate, add the amino acid, complex sugar alcohol and potassium dihydrogen phosphate into a reaction kettle equipped with an appropriate amount of water according to mass percentage, and stir until completely dissolved under the first temperature condition to obtain the first intermediate;

[0045] For the preparation of the second intermediate, the metal chelating agent, instant boron and complexing agent are added to the first intermediate by mass percentage under the second temperature condition, and stirred until completely dissolved to obtain the second intermediate;

[0046] The surfactant is added to the second intermediate by mass percentage, and the fertilizer for reducing the cadmium content of rice is obtained after stirring under the third temperature condi...

Embodiment 1

[0054] The fertilizer that reduces the cadmium content of rice in the present embodiment comprises the component of following mass percent: glycine 6%, alanine 7%, xylitol 3%, potassium dihydrogen phosphate 22.5%, EDTA-Zn 10%, EDTA -Fe 5%, EDTA-Mn 0.7%, EDTA-Cu 0.5%, edetate disodium 0.8%, octylphenol ethoxylate 1.6%, citric acid 1.1% and water balance.

[0055] The preparation method of the fertilizer that reduces the rice cadmium content of the present embodiment comprises:

[0056] Glycine, alanine, xylitol and potassium dihydrogen phosphate are respectively added into a reaction kettle filled with an appropriate amount of water according to the mass percentage, heated to 50°C-55°C, and fully stirred for 15min-30min to obtain the first intermediate. At a temperature of 50°C to 55°C, EDTA-Zn, EDTA-Fe, EDTA-Mn, EDTA-Cu, and disodium ethylenediaminetetraacetate were added to the first intermediate according to mass percentage, and stirred for 45min to 70min to Complete dissol...

Embodiment 2

[0058] The fertilizer that reduces the cadmium content of rice in the present embodiment comprises the following mass percent components: glycine 8%, alanine 6.5%, mannitol 3.5%, potassium dihydrogen phosphate 24%, EDTA-Zn 9%, EDTA-Zn 6% Fe, 0.78% EDTA-Mn, 0.7% EDTA-Cu, 0.92% diethylenetriaminepentaacetic acid, 1.8% silicone surfactant, 1.3% potassium citrate and the balance of water.

[0059] The preparation method of the fertilizer that reduces the rice cadmium content of the present embodiment comprises:

[0060] Glycine, alanine, mannitol and potassium dihydrogen phosphate are respectively added into a reaction kettle filled with an appropriate amount of water according to the mass percentage, heated to 50°C-55°C, and fully stirred for 15min-30min to obtain the first intermediate. At a temperature of 50°C to 55°C, add EDTA-Zn, EDTA-Fe, EDTA-Mn, EDTA-Cu, and diethylenetriaminepentaacetic acid into the first intermediate according to mass percentage, and stir for 45min to 70...

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Abstract

The invention discloses a fertilizer for reducing a rice cadmium content, a preparation method and application thereof. The fertilizer for reducing the rice cadmium content is prepared from the following ingredients in weight ratio: 10% to 16% of amino acid, 2% to 3% of compound sugar alcohol, 25% to 28% of monopotassium phosphate, 1.3% to 1.6% of instant boron, 14% to 21% of a metal chelating agent, 0.6% to 0.9% of a complexing agent, 2% to 4% of a surface active agent and the balance of water. According to the fertilizer for reducing the rice cadmium content, the preparation method and the application thereof disclosed by the invention, the content of cadmium metal in the rice can be effectively reduced, the content can be lower than the maximum limit standard of the national cereal cadmium content, and the rice quality is improved.

Description

technical field [0001] The invention relates to the technical field of rice planting, in particular to a fertilizer for reducing cadmium content in rice, a preparation method and application thereof. Background technique [0002] Soil is not only the material basis for human survival and development, but also an important part of the ecological environment. Its environmental quality is directly related to the safety of agricultural products and has a profound impact on human health. Along with the further development of economic globalization, human factors such as mining and smelting, vehicle exhaust emissions, urban garbage dumps, industrial "three wastes" emissions, and unreasonable use of heavy metal-containing pesticides, fertilizers, and plastic films have intensified. In addition to soil heavy metal pollution, the safety of heavy metals in rice has become increasingly prominent. Soil heavy metal pollution has the characteristics of concealment, latent, long-term and ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04A01C21/00A01G22/22C05G3/80
CPCA01C21/005A01G22/22C05B7/00C05G3/00C05G3/80C05C11/00C05D9/02
Inventor 吴丛杨慧杨万
Owner JIANGSU HONGYU ENVIRONMENTAL TECH CO LTD
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