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Plant-sourced pesticide micron emulsion used for preventing aphid and locust, and preparation method thereof

A technology of botanical pesticides and microemulsions, applied in botany equipment and methods, plant growth regulators, insecticides, etc., can solve the problems of cumbersome extraction of active ingredients of medicinal materials, lack of large-scale production, and difficulty in popularization and use. Achieve the effects of reducing crop damage and fruit tree flower and fruit drop, which is beneficial to the quality of the ecological environment and good control effect

Inactive Publication Date: 2018-12-14
内蒙古联硕生物医药研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For the preparation of general botanical pesticides, its disadvantages are slow drug effect, selectivity to pests and slow drug effect
There are many types of botanical medicinal materials, and the extraction is complicated, and the extraction of active ingredients in medicinal materials is cumbersome, and it is difficult to promote and use without large-scale production.

Method used

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  • Plant-sourced pesticide micron emulsion used for preventing aphid and locust, and preparation method thereof
  • Plant-sourced pesticide micron emulsion used for preventing aphid and locust, and preparation method thereof
  • Plant-sourced pesticide micron emulsion used for preventing aphid and locust, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment is an example of the botanical pesticide microemulsion of the present invention against aphids and locusts and its preparation method, consisting of the following steps:

[0036] (1) Powder the rhizome of Tripterygium wilfordii to 20-40 meshes, take 1 part of tripterygium wilfordii powder and 8 parts of 70% industrial alcohol and put it into an ultrasonic extractor, extract at a power of 500W and a temperature of 30°C for 30 minutes. The extracted solution was filtered and evaporated to dryness with a rotary evaporator at a temperature of 70° C. to obtain an extract of the extract, which was set aside.

[0037] (2) Pulverize the root of Euphorbia chamaejasma into 20-30 meshes, take 1 portion of Euphorbia chamaejasma powder and add 10 portions of 95% ethanol into an ultrasonic extractor, select the power to be 500W, extract the temperature at 30°C, and extract the time for Extract once for 30 minutes, filter the extracted solution, and evaporate to drynes...

Embodiment 2

[0042] This embodiment is another example of the botanical pesticide microemulsion against aphids and locusts of the present invention and its preparation method, consisting of the following steps:

[0043] (1) Powder the rhizome of Tripterygium wilfordii 20-40 mesh, take 1 part of tripterygium wilfordii powder, 8 parts of 70% industrial alcohol, put it into an ultrasonic extractor, and extract it for 30 minutes at a power of 500W and a temperature of 30°C . The extracted solution was filtered and evaporated to dryness with a rotary evaporator at a temperature of 70° C. to obtain an extract of the extract, which was set aside.

[0044] (2) Crush the root of Euphorbia chamaejasma into 20-30 meshes, take 1 portion of Euphorbia chamaejasma powder and 10 portions of 95% ethanol into an ultrasonic extractor, select the power to be 500W, and extract at an extraction temperature of 30°C Extract once for 30 minutes, filter the extracted solution, and evaporate to dryness with a rotar...

Embodiment 3

[0049] This embodiment is to carry out indoor contact activity experiment to Orthoptera locusts to the botanical pesticide microemulsion prepared in embodiment 1:

[0050] The tested pests include: 1-2 instar locusts, 3-4 instar locusts, aphids.

[0051] experimental method:

[0052] Select 80 lively and healthy locusts of 1-2 ages and be divided into four groups,

[0053] Dilute 1% botanical pesticide microemulsion with standard hard water 10 times, 50 times, 100 times, such as figure 1 shown.

[0054] 1% botanical pesticide microemulsion diluted 10 times, the pesticide is stable, such as figure 2 shown.

[0055] Dilute 1% botanical pesticide microemulsion with standard hard water 10 times, 50 times, 100 times, spray locusts, and observe the activities of locusts

[0056]

[0057] Experimental results show that: 1% botanical pesticide microemulsion is diluted 10 times, 50 times and 100 times with standard hard water, and the contact killing effect of spraying locusts...

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Abstract

The invention discloses a plant-sourced pesticide micron emulsion used for preventing aphid and locust, and a preparation method thereof. According to the preparation method, raw material components tripterygium wilfordii root and stem, Euphorbia fischeriana root, and sophora alopecuroides seed are processed so as to obtain tripterygium wilfordii root and stem extract product, Euphorbia fischeriana root extract product, and sophora alopecuroides seed extract product; the tripterygium wilfordii root and stem extract product, Euphorbia fischeriana root extract product, and sophora alopecuroidesseed extract product are mixed at a ratio of 0.1-1% : 0.1-1% :0.1-1%, an appropriate amount of water and a small amount of ethanol are added for dissolving, tween 20 and span 20 are added, an obtainedmixture is stirred through magnetic stirring to be uniform so as to obtain an oil phase; the oil phase is heated to 50 DEG C; with stirring, n-butanol co-emulsifier is added slowly, and stirring is carried out continuously; distilled water, antifreezing agent 1, 2-propylene glycol, and antifoaming agent dimethicone are added for uniform stirring, and an obtained mixed material is added into the oil phase slowly with stirring so as to obtain the plant-sourced pesticide micron emulsion used for preventing aphid and locust. It is shown by experiment results that: 1% of the plant-sourced pesticide micron emulsion possesses contact toxicity on plant insects aphid and locust even at a dilution ratio of 100 times, and the plant-sourced pesticide micron emulsion is safe for crops.

Description

technical field [0001] The invention relates to the field of pesticide preparations, in particular to a botanical pesticide microemulsion against aphids and locusts and a preparation method thereof. Background technique [0002] my country is a large agricultural country, and pesticides play a very important role in agricultural production. The insecticidal pesticides used by farmers are mainly chemical pesticides. Examples include beta-cypermethrin and imidacloprid. Beta-cyhalothrin has the characteristics of drug efficacy, inhibits the conduction of insect nerve axons, has the effects of avoiding, knocking down and poisoning insects, has a wide insecticidal spectrum, high activity, rapid drug effect, and is resistant to It is washed by rain, but it is easy to develop resistance to it after long-term use, and it has a certain control effect on pests with piercing-sucking mouthparts. Due to the high toxicity and high residue of this type of pesticide, it is very harmful to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/20A01N25/04A01N25/30A01N25/02A01P7/04
CPCA01N25/02A01N25/04A01N25/30A01N65/00A01N65/14A01N65/18A01N65/20
Inventor 杨治国李旻辉张文婷
Owner 内蒙古联硕生物医药研究所
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