Water-soluble fertilizer for inhibiting absorption and enrichment of heavy metal cadmium of rice and preparation method thereof

A heavy metal, water-soluble technology, applied in the direction of organic fertilizers, fertilizer mixtures, ammonium orthophosphate fertilizers, etc., can solve the problems of heavy soil damage, lack of nutrient elements, and difficulty in large-scale promotion, so as to promote growth and tillering, reduce absorption and enrichment. Concentrate, reduce the effect of absorption accumulation

Active Publication Date: 2017-06-09
FOSHAN ZHIBAO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The first measure is difficult to promote on a large scale due to the large amount of funds required for engineering restoration; the second measure is more destructive to the soil, and the necessary trace elements in the soil also precipitate, resulting in a l...

Method used

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  • Water-soluble fertilizer for inhibiting absorption and enrichment of heavy metal cadmium of rice and preparation method thereof
  • Water-soluble fertilizer for inhibiting absorption and enrichment of heavy metal cadmium of rice and preparation method thereof
  • Water-soluble fertilizer for inhibiting absorption and enrichment of heavy metal cadmium of rice and preparation method thereof

Examples

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preparation example Construction

[0027] A preparation method of water-soluble fertilizer, comprising the steps of:

[0028] (1) adding the glycine, alanine, complex sugar alcohol and potassium dihydrogen phosphate into water to heat respectively, and stirring until completely dissolved to obtain the mother liquor A;

[0029] (2) Add the EDTA-Zn, EDTA-Fe, EDTA-Mn, EDTA-Cu, disodium octaborate tetrahydrate and chelating agent respectively into the mother liquor A for chelation and stir until completely dissolved to obtain the mother liquor B ;

[0030] (3) Add the surfactant to the mother liquor B, continue heating and stirring for a period of time, then add the pH regulator to adjust the pH value, and stir until completely dissolved to obtain a water-soluble mixture that inhibits the absorption and enrichment of heavy metal cadmium in rice. fertilizer. The present invention can produce the water-soluble fertilizer that inhibits the absorption and enrichment of heavy metal cadmium in rice without using specia...

Embodiment 1

[0036] 1. Preparation of water-soluble fertilizer:

[0037](1) Add 3% glycine, 2.5% alanine, 4% complex sugar alcohol and 24% potassium dihydrogen phosphate into 41.9% water and heat to 50°C, and fully stir until completely dissolved to obtain mother liquor A;

[0038] (2) At 55°C, mix 12% EDTA-Zn, 8% EDTA-Fe, 0.3% EDTA-Mn, 0.2% EDTA-Cu, 1% disodium octaborate tetrahydrate, 0.4% ethylenediaminetetraacetic acid and Add 0.4% diethylenetriaminepentaacetic acid to the mother liquor A for chelation and stir until completely dissolved to obtain the mother liquor B;

[0039] (3) At 60°C, add 1.5% organosilicon surfactant to mother liquor B, continue heating and stirring for a period of time, add 0.8% potassium citrate, and stir until completely dissolved to obtain the inhibition of rice heavy metal cadmium absorption and Enriched water-soluble fertilizer with a pH of 5.

[0040] 2. Field experiment

[0041] (1) The water-soluble fertilizer prepared in Example 1 for inhibiting the ...

Embodiment 2

[0052] 1. Preparation of water-soluble fertilizer:

[0053] (1) Add 2% glycine, 2% alanine, 4% complex sugar alcohol and 22% potassium dihydrogen phosphate into 48% water and heat to 60°C, and fully stir until completely dissolved to obtain mother liquor A;

[0054] (2) At 50°C, mix 10% EDTA-Zn, 6% EDTA-Fe, 0.5% EDTA-Mn, 0.3% EDTA-Cu, 1.2% disodium octaborate tetrahydrate, 0.5% ethylenediaminetetraacetic acid and Add 0.5% diethylenetriaminepentaacetic acid to the mother liquor A for chelation and stir until completely dissolved to obtain the mother liquor B;

[0055] (3) At 55°C, add 1% silicone surfactant and 1% JFC to mother liquor B, continue heating and stirring for a period of time, then add 1% potassium citrate, and stir until completely dissolved to obtain the inhibited rice Water-soluble fertilizer for absorption and enrichment of heavy metal cadmium, pH value is 3.

[0056] 2. Field experiment

[0057] (1) The water-soluble fertilizer prepared in Example 2 to inhib...

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Abstract

The invention discloses a water-soluble fertilizer for inhibiting absorption and enrichment of heavy metal cadmium of rice and a preparation method thereof. The water-soluble fertilizer is prepared from the following components in percentage by weight: 2 to 3 percent of glycine, 2 to 2.5 percent of alanine, 3 to 4 percent of composite sugar alcohol, 22 to 24 percent of monopotassium phosphate, 10 to 12 percent of EDTA-Zn, 6 to 8 percent of EDTA-Fe, 0.3 to 0.5 percent of EDTA-Mn, 0.2 to 0.3 percent of EDTA-Cu, 1 to 1.2 percent of disodium octaborate tetrahydrate, 0.8 to 1 percent of a chelating agent, 1.5 to 2 percent of a surfactant, 0.6 to 1 percent of a pH regulating agent and the balance of water. The water-soluble fertilizer for inhibiting the absorption and enrichment of the heavy metal cadmium of the rice can reduce absorption accumulation of the heavy metal cadmium of the rice, ensure the eating safety of the rice and improve the quality of the rice, and accelerate the production increment of the rice.

Description

technical field [0001] The invention relates to the technical field of agricultural fertilizers, in particular to a water-soluble fertilizer and a preparation method for inhibiting the absorption and enrichment of heavy metal cadmium in rice. Background technique [0002] As one of the five major food crops in the world, rice is seriously threatened by heavy metal pollution, and its safety production has attracted much attention. With the rapid development of industry and agriculture, the pollution of heavy metals in farmland in my country is becoming increasingly worrying, especially the pollution of heavy metal cadmium. Cadmium is easily absorbed by gramineous crops such as rice and enriches and accumulates in the grain, thus affecting the edible safety of the grain. According to survey statistics, the area of ​​cultivated land polluted by heavy metals in my country has reached 20 million hectares, accounting for 1 / 6 of the total cultivated land area in the country. On a...

Claims

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Application Information

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IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05C11/00C05D9/02C05F11/00
Inventor 郭勇军杜建军伍志波于立红王颖周坚兵
Owner FOSHAN ZHIBAO CHEM
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