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Preparation method of low-temperature-resistant anti-freezing agent for fruit trees

An antifreeze and low-temperature-resistant technology, applied in botany equipment and methods, biocides, pest control, etc., can solve problems such as short action time, poor cold resistance effect, and simple components of cold resistance agents, and achieve bond length Growth, structural stability, long-lasting effect of frost protection

Inactive Publication Date: 2019-02-15
尹启龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet this anti-cold agent composition of this invention is simple, and anti-cold effect is relatively poor; And action time is not long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of low-temperature resistant antifreeze for fruit trees, comprising:

[0026] (1)Fe 3 O 4 Magnetic fluid preparation: mix 3mol / L sodium hydroxide solution and 50g / L sodium dodecylbenzene sulfonate, pass N 2 Protect, heat up to 45℃, slowly add a mixed salt solution of ferric chloride and ferrous sulfate, Fe 3+ The concentration is 0.1mol / L, Fe 2+ The concentration is 0.1mol / L, and Fe 3+ With Fe 2+ The ratio of the substance is 1.5:1, the pH of the mixture solution is adjusted to 10, and the reaction is stirred at 40°C for 50min; the resulting product is washed with deionized water to neutrality, centrifuged down, vacuum dried at 50°C, and ground (particle size is 40 -100nm), save for future use;

[0027] (2) Fe immobilized by polysaccharides 3 O 4 Magnetic fluid preparation: Fe 3 O 4 The magnetic fluid is dispersed in a solution of chitosan and polyethylene glycol, and then dispersed by ultrasound; the concentrations of chitosan and polyethylene glycol are...

Embodiment 2

[0034] A preparation method of low-temperature resistant antifreeze for fruit trees, comprising:

[0035] (1)Fe 3 O 4 Magnetic fluid preparation: mix 3mol / L sodium hydroxide solution and 60g / L polyethylene glycol, pass N 2 Protect, heat up to 50℃, slowly add a mixed salt solution of ferric chloride and ferrous sulfate, Fe 3+ The concentration is 0.3mol / L, Fe 2+ The concentration is 0.3mol / L, and Fe 3+ With Fe 2+ The ratio of the substance is 1.5:1, the pH of the mixture solution is adjusted to 11, and the reaction is stirred at 60°C for 60min; the resulting product is washed with deionized water to neutrality, centrifuged down, vacuum dried at 50°C, and ground (particle size 40 -100nm), save for future use;

[0036] (2) Fe immobilized by polysaccharides 3 O 4 Magnetic fluid preparation: Fe 3 O 4 The magnetic fluid is dispersed in a solution of chitosan and polyethylene glycol, and then dispersed by ultrasound; the concentrations of chitosan and polyethylene glycol are respectively 3...

Embodiment 3

[0042] A preparation method of low-temperature resistant antifreeze for fruit trees, comprising:

[0043] (1)Fe 3 O 4 Magnetic fluid preparation: mix 3mol / L sodium hydroxide solution and 100g / L dodecyltrimethylammonium bromide, pass N 2 Protect, heat up to 60℃, slowly add a mixed salt solution of ferric chloride and ferrous sulfate, Fe 3+ The concentration is 0.3mol / L, Fe 2+ The concentration is 0.1mol / L, and Fe 3+ With Fe 2+ The ratio of the substance is 2.5:1, the pH of the mixture solution is adjusted to 12, and the reaction is stirred at 60°C for 70min; the resulting product is washed with deionized water to neutrality, centrifuged down, vacuum dried at 50°C, and ground (particle size is 40 -100nm), save for future use;

[0044] (2) Fe immobilized by polysaccharides 3 O 4 Magnetic fluid preparation: Fe 3 O 4 The magnetic fluid is dispersed in a solution of carboxymethyl cellulose and polyethylene glycol, and then dispersed ultrasonically; the concentrations of chitosan and polye...

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PUM

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Abstract

The invention provides a preparation method of a low-temperature-resistant anti-freezing agent for fruit trees and belongs to the field of plant anti-freezing agents. The anti-freezing agent is obtained by adding an aqueous solution to an oil solution and then performing emulsification under the action of an external magnetic field. The aqueous solution comprises a polysaccharide immobilized Fe3O4magnetic fluid, and a preparation method of the Fe3O4 magnetic fluid comprises the steps as follows: mixing a sodium hydroxide solution and a surfactant, introducing N2 for protection, increasing thetemperature to 45-60 DEG C, slowly adding a mixed salt solution of ferric chloride and ferrous sulfate and stirring the mixture for a reaction; washing an obtained product with deionized water to beneutral, performing centrifugal sedimentation, vacuum drying and grinding, and storing the anti-freezing agent for later use. The anti-freezing agent is safe, environmentally friendly, long in life and long in effective acting time, has remarkable benefits for cold resistance and freezing prevention of fruit trees and can promote growth of fruit trees and enhance immunity of fruit trees.

Description

Technical field [0001] The invention belongs to the field of plant antifreeze, and specifically relates to a preparation method of a low-temperature resistant antifreeze for fruit trees. Background technique [0002] During the wintering period, when the temperature is below 0°C, plants often suffer cell injury or death. At present, one of the main antifreeze measures for plants is to spray antifreeze. Antifreeze is also called antifreeze. When applied to various plants, it can significantly improve the disease resistance and low temperature resistance of green plants and various fruit trees and seedlings. , Effectively prevent morning and evening frost attacks, avoid or reduce frost damage. There are many types of chemical antifreeze products on the market, but the principle of antifreeze can be roughly divided into three categories. One is the type of inducer, which uses growth hormones to induce the production of antifreeze genes in plants to enhance the antifreeze ability; t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N27/00A01N57/20A01N59/06A01N37/44A01N47/14A01N37/42A01N43/90A01N59/16A01P21/00A01G13/00
CPCA01N27/00A01G13/00A01N37/42A01N37/44A01N43/90A01N47/14A01N57/20A01N59/06A01N59/16
Inventor 尹启龙
Owner 尹启龙
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