Plant pesticide for preventing and controlling tobacco aphid and use thereof

A technology for tobacco aphids and plants, applied in the direction of plant growth regulators, applications, insecticides, etc., to achieve obvious control effects and simple and easy-to-operate extraction processes

Inactive Publication Date: 2013-07-31
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] These three kinds of plants are common and easy to get, and all have good insecticidal effects, but n

Method used

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  • Plant pesticide for preventing and controlling tobacco aphid and use thereof
  • Plant pesticide for preventing and controlling tobacco aphid and use thereof
  • Plant pesticide for preventing and controlling tobacco aphid and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1:

[0013] Take the bulbs of the medicinal parts of garlic, the fruits of the medicinal parts of Litsea cubeba, and the bulbs of the medicinal parts of onion, each add 10 times the mass of water and stir evenly, soak at room temperature for 10 hours, and use the Chinese Pharmacopoeia (2005 Edition) Appendix XD volatile oil The volatile oil is extracted by the determination method. Add 30% of the total weight of the extracted volatile oil to anhydrous sodium sulfate, let it stand overnight, filter and dehydrate, and mix the volatile oil extracts of the above three raw materials according to a volume ratio of 1:1:1 to obtain the volatile oil. Stock solution.

[0014] The main effect of adding anhydrous sodium sulfate is to absorb the water molecules in the volatile oil to make the volatile oil more pure. Anhydrous sodium sulfate is a commonly used liquid dehydration reagent. Or use anhydrous magnesium sulfate instead of anhydrous sodium sulfate for dehydration.

[00...

Example Embodiment

[0024] Example 2:

[0025] Take the bulbs of the medicinal parts of garlic, the fruits of the medicinal parts of Litsea cubeba, and the bulbs of the medicinal parts of onion, each add 10 times the mass of water and stir evenly, soak at room temperature for 10 hours, and use the Chinese Pharmacopoeia (2005 Edition) Appendix XD volatile oil The volatile oil is extracted by the determination method. The extracted volatile oil is added with anhydrous sodium sulfate of 30% of the weight of the volatile oil, and it is allowed to stand overnight. After filtration and dehydration, the volatile oil extracts of the above three raw materials are mixed uniformly according to the volume ratio of 1:1:1 to obtain the volatile oil stock solution .

[0026] 5 parts of the mixed volatile oil stock solution, 10 parts by weight of 80wt% ethanol are added, and the mixture is stirred and mixed to form a plant medicine.

[0027] The use of plant medicine:

[0028] Choose rainless weather after 3 pm, dilute...

Example Embodiment

[0035] Example 3:

[0036] Take the bulbs of the medicinal parts of garlic, the fruits of the medicinal parts of Litsea cubeba, and the bulbs of the medicinal parts of onion, each add 10 times the mass of water and stir evenly, soak at room temperature for 10 hours, and use the Chinese Pharmacopoeia (2005 Edition) Appendix XD volatile oil The volatile oil is extracted by the determination method. The extracted volatile oil is added with anhydrous sodium sulfate of 30% of the weight of the volatile oil, and it is allowed to stand overnight. After filtration and dehydration, the volatile oil extracts of the above three raw materials are mixed uniformly according to the volume ratio of 1:1:1 to obtain the volatile oil stock solution .

[0037] 5 parts of the mixed volatile oil stock solution, 10 parts by weight of 80wt% ethanol are added, and the mixture is stirred and mixed to form a plant medicine.

[0038] The use of plant medicine:

[0039] Choose rainless weather after 3 pm, dilute...

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Abstract

The invention discloses a plant pesticide for preventing and controlling tobacco aphid and a use thereof, and belongs to the field of biopesticides. A preparation method of the plant pesticide comprises the following steps of respectively crushing allium sativum, litsea cubeba and allium cepa, respectively adding water into the crushed garlic, litsea cubeba and onion, wherein the amount of the water is 10 times amount of the crushed allium sativum, litsea cubeba and allium cepa, respectively extracting volatile oil, based on the weight of the volatile oil, respectively adding 30wt% of anhydrous sodium sulfate into the volatile oil, standing over night for dehydration, carrying out filtration, mixing the filtered volatile oil according to a volume ratio of 1: 1: 1 to obtain a mixed volatile oil stock solution, taking 5 weight parts of the mixed volatile oil stock solution, and adding 10 weight parts of ethanol having the content of 80wt% into the taken mixed volatile oil stock solution to obtain the plant pesticide for preventing and controlling tobacco aphid. The plant pesticide is subjected to 300 to 700-fold dilution and is sprayed on the tobacco leaf right side or back side after three o'clock in the afternoon of a rainless day according to a ratio of 50kg of plant pesticide per mu of the tobacco field. The preparation method adopts the easily-available raw materials and has simple and easy processes. The plant pesticide has obvious effects of preventing and controlling tobacco aphid, is safe and nontoxic, does not produce environmental harm, and does not influence tobacco leaf production quality.

Description

technical field [0001] The invention belongs to the technical field of biological pesticides, and in particular relates to a safe and pollution-free plant medicament capable of preventing and controlling tobacco aphids, and its application in tobacco planting. Background technique [0002] In the prior art, aphids are still one of the main pests in tobacco leaf production. Meanwhile, aphids also play a role in fueling the spread of tobacco leaf mosaic disease, causing huge losses to tobacco leaf production every year. At present, the control of aphids is still mainly carried out by chemical methods, which have played a certain role in controlling the occurrence of tobacco aphids. However, the extensive, large-scale and long-term use of chemical pesticides will easily lead to the increase of pesticide residues in tobacco leaves, the enhancement of drug resistance and re-emergence of disease and insect pests, and the use of chemical pesticides will easily lead to the destructi...

Claims

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Application Information

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IPC IPC(8): A01N65/42A01N65/24A01P7/04
CPCY02A50/30
Inventor 李琳王豹祥王林吴风光何结望闫铁军黎根
Owner HUBEI CHINA TOBACCO IND
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