Preparation method for agricultural bactericide of plant source

An agricultural fungicide and plant-sourced technology, applied in the field of preparation of plant-sourced agricultural fungicides, to achieve the effects of sustainable development, crop safety, and no environmental pollution

Inactive Publication Date: 2017-06-13
董晓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problems to be solved by the present invention are: aiming at the simplification of current plant resistant varieties, the genetic complexity of physiological races of plant pathogenic bacteria and the diversity of pathogenicity, as well as the toxicity of chemical pesticides and the drug resistance of pathogenic bacteria, resistant varieties The use of chemical pesticides and chemical pesticides is subject to certain restrictions in production, and a preparation method of botanical agricultural fungicides is provided. The present invention first uses Litsea cubeba as a raw material, crushes and homogenizes it, puts it into deionized water and extracts it, and then extracts it in deionized water. The effective substances are evaporated with water vapor, and the litsea cubeba essential oil is obtained after standing for stratification, and the bactericidal substances of alkylphenolic acids in ginkgo biloba are extracted with deionized water, and the antibacterial components in cinnamon patchouli are extracted with ethanol , and finally heat and stir Ginkgo biloba extract, cassia bark extract and Litsea cubeba oil, etc., and achieve the purpose of sterilization through the synergistic effect between multiple components, and obtain a botanical agricultural fungicide. The agricultural fungicide prepared by the present invention is effective for many Plant pathogenic bacteria have a broad-spectrum inhibitory effect, and are safe for crops, do not pollute the environment, have the advantages of high efficiency, low toxicity, and bacteria are not easy to develop resistance to them

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Weigh 3 kg of Litsea Cubeba, add 3 L of 1% sodium chloride solution, soak for 2 hours in a constant temperature water bath at 50°C, then transfer to a beater to break and homogenate to obtain Litsea Cubeba slurry, and Litsea Cubeba Add the slurry to 20L of deionized water at a temperature of 80°C, and use a 300W ultrasonic wave to assisted extraction for 10 minutes to obtain a mixed solution, then pass water vapor into the mixed solution for 3 hours at a rate of 1 L / min, collect the steam with a condensing reflux device, and let it stand for stratification for 1 hour , take the supernatant to get Litsea cubeba essential oil, weigh 1kg of ginkgo leaves, air-dry naturally, put them into a pulverizer and grind them, pass through a 60-mesh sieve, add the sifted ginkgo leaf powder to 5L of deionized water for decoction 3h, then filter, collect the ginkgo leaf filtrate, decoct the filter residue once more, combine the ginkgo leaf filtrate, then evaporate the ginkgo leaf filtra...

example 2

[0020] Weigh 5 kg of Litsea Cubeba, add 5 L of 1% sodium chloride solution by mass fraction, soak for 3 hours in a constant temperature water bath at 60°C, and then transfer to a beater to crush and homogenate to obtain Litsea Cubeba slurry. Add the slurry to 30L of deionized water at a temperature of 90°C, and use a 300W ultrasonic wave to assisted extraction for 15 minutes to obtain a mixed solution, then pass water vapor into the mixed solution at 2L / min for 5 hours, and collect the steam with a condensing reflux device, and let it stand for 2 hours. , take the supernatant to get Litsea cubeba essential oil, weigh 2kg of ginkgo leaves, air-dry naturally, put them into a pulverizer and grind them, pass through a 60-mesh sieve, add the sifted ginkgo leaf powder to 10L of deionized water for decoction 5h, then filter, collect the ginkgo leaf filtrate, decoct the filter residue twice, combine the ginkgo leaf filtrate, then evaporate the ginkgo leaf filtrate to dryness under redu...

example 3

[0023] Weigh 4 kg of Litsea Cubeba, add 4 L of 1% sodium chloride solution by mass fraction, soak for 3 hours in a constant temperature water bath at 55°C, and then transfer to a beater to break and homogenate to obtain Litsea Cubeba slurry. Add the slurry to 25L of deionized water at a temperature of 85°C, and use a 300W ultrasonic wave to extract it for 13 minutes to obtain a mixed solution, and then pass water vapor into the mixed solution for 4 hours at a rate of 2L / min, and collect the steam with a condensing reflux device, and let it stand for 2 hours. , take the supernatant to get Litsea cubeba essential oil, weigh 2kg of ginkgo leaves, air-dry naturally, put them into a pulverizer and grind them, pass through a 60-mesh sieve, add the sifted ginkgo leaf powder to 8L of deionized water for decoction 4h, then filter, collect the ginkgo leaf filtrate, decoct the filter residue twice, combine the ginkgo leaf filtrate, then evaporate the ginkgo leaf filtrate to dryness under ...

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PUM

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Abstract

The invention relates to a preparation method for the agricultural bactericide of a plant source, and belongs to the technical field of agricultural bactericide. The preparation method comprises the following steps: firstly, taking fruit of cubeb litsea tree as raw materials, breaking and homogenizing the fruit of cubeb litsea tree, adding into deionized water for extraction; carrying out transpiration by vapour to obtain effective substances; standing for layering to obtain the essential oil of the fruit of cubeb litsea tree; extracting bacteriocidal substances of alkylphenolic acids in ginkgo leaves by the deionized water; subsequently, extracting antibacterial substances in cinnamon herba pogostemonis by ethyl alcohol; and finally, carrying out heating stirring on ginkgo leaf extracts, cinnamon extracts, litsea cubeba oil and the like; through a synergistic effect among multiple ingredients, achieving a sterilization purpose to obtain the agricultural bactericide of plant source. The agricultural bactericide prepared with the preparation method has a broad-spectrum inhibition function on various plant pathogenic bacteria, is safe to crops, does not pollute environment and has the advantages of high efficiency and low toxicity, and resistance is unlikely to generate to the agricultural bactericide by the bacteria.

Description

technical field [0001] The invention relates to a preparation method of a plant source agricultural fungicide, belonging to the technical field of agricultural fungicides. Background technique [0002] Botanical fungicides refer to substances with fungicidal activity directly extracted from plants. Although there are not many plant-derived substances that can be used as fungicides, the research is still very deep and extensive. Artemisinin isolated from Artemisia annua plants, stearyl alcohol isolated from Salvia miltiorrhiza, alfalfaic acid present in the root of alfalfa, and pterostilbene in sea red bean all showed strong antifungal activity. Lvdi EC, which is made from active substances extracted and separated from ginkgo trees, has significant bactericidal and bacteriostatic effects on various vegetables, apples, wheat, and cotton, and is a broad-spectrum agricultural fungicide. [0003] Rice blast is one of the most serious rice diseases in the world's rice fields. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/24A01P3/00
CPCA01N65/00A01N65/24A01N2300/00
Inventor 董晓张潇赵玉林
Owner 董晓
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