CN109169644A - A kind of argy wormwood microemulsion and preparation method thereof - Google Patents
A kind of argy wormwood microemulsion and preparation method thereof Download PDFInfo
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- CN109169644A CN109169644A CN201811040595.8A CN201811040595A CN109169644A CN 109169644 A CN109169644 A CN 109169644A CN 201811040595 A CN201811040595 A CN 201811040595A CN 109169644 A CN109169644 A CN 109169644A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/08—Magnoliopsida [dicotyledons]
- A01N65/12—Asteraceae or Compositae [Aster or Sunflower family], e.g. daisy, pyrethrum, artichoke, lettuce, sunflower, wormwood or tarragon
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Abstract
The present invention provides a kind of argy wormwood microemulsion and preparation method thereof, the method is as follows: acquisition argy wormwood in May adds ethyl alcohol, ultrasonic extraction is filtered, is concentrated in vacuo to paste, biennial wormwood extract can be obtained after crushing.Methanol, dehydrated alcohol, ethyl acetate are configured to solvent, agriculture breast 500, EL-90, Span80 are configured to emulsifier, by 3- chloro- 1,2- propylene oxide, 2,6- di-tert-butyl-4-methy phenol, sodium sorbate are configured to stabilizer, by ethylene glycol and propylene glycol by being configured to antifreezing agent, then 5~10 parts of biennial wormwood extract, 5~10 parts of solvent, 10~20 parts of emulsifier are taken, 1~3 part of stabilizer, 5~10 parts of antifreezing agent, 50~65 parts of deionized water in high pressure mixing kettle, lower holding a period of time is argy wormwood microemulsion after homogeneous.The present invention has the advantage that environmental pollution is small, the resistance problems of herbicide can be effectively relieved.
Description
(1) technical field
The present invention relates to a kind of biological weed killers, more particularly, to a kind of micro- using biennial wormwood extract as the argy wormwood of effective component
Emulsion and preparation method thereof.
(2) background technique
Pesticide prevents and treats the aspects such as crop diseases and pest crop smothering in the mankind and plays huge contribution, due to the quick hair of pesticide
Exhibition and the mankind protective awareness of living environment is constantly enhanced and chemical pesticide itself there are the shortcomings that, the development of chemical pesticide
It is more and more difficult.People start attention turn to low toxicity, low-residual, be not likely to produce drug resistance biological pesticide exploitation with make
With.Biological pesticide has many advantages, such as safe and free of toxic and side effects, free from environmental pollution, and the high speed development of biotechnology will welcome life
The new opportunities of object Agrochemicals, what it is instead of chemical pesticide will be biological pesticide.Biological pesticide is the important guarantor of pollution-free food production
Card.
Compounds with herbicidal activity from natural products have easily biological-degradable, toxicity is low, development cost are few, chemical structure is novel, effect
The advantage that mode is unique, the selectively high synthesis herbicide of target is incomparable, research are increasingly subject to the attention of people.Plant
It is the natural treasure-house of bioactive compound.It has been found that the plant of more than 30 a sections contains nearly hundred kinds there is weeding to make in the world at present
Native compound, some of them has been developed that into natural herbicide, and obtains patent protection and popularization and application.Screening extensively
There is the natural products of weeding characteristic in plant, separation identification is carried out to active material, new reactive compound is explored, as pesticide
The important sources of guide structure, derive structure and are optimized, it has also become the forward position of New pesticides discovery research and hot fields,
It is also to obtain one of the effective way with good environment friendly pesticide.
Argy wormwood (Artemisia scoparia) is composite family sagebruss, and 1~2 year sward sheet is distributed in all parts of the country, north
Side is the most universal, is born in desert, roadside or farmland.Weeding biological activity determination test discovery argy wormwood essential oil is to barnyard grass, dog tail
The weeds such as grass, Amaranthus retroflexus and piemarker have preferable preventive effect.Biennial wormwood extract is degradable in the environment, to people, animal low toxicity.
Activity of weeding based on argy wormwood, how to develop it is a kind of using biennial wormwood extract as the novel biopesticide of active constituent, be used for field
Between substitute high residue chemical pesticide, have become a very important task in environmental protection and agricultural production.
Argy wormwood microemulsion of the present invention is the raw material based on biennial wormwood extract, and a certain amount of solvent, emulsification is added
Agent, stabilizer, antifreezing agent and water, and a kind of argy wormwood microemulsion prepared.Product of the present invention overcomes chemical pesticide to people, animal poison
Property it is high, be difficult to the disadvantages of being also easy to produce drug resistance of degrading in the environment, there is the features such as efficient to harmful organism, safe to people, animal,
Its dosage form and environmental-friendly, the advantages of having fully demonstrated microemulsion.
(3) summary of the invention
It is an object of that present invention to provide a kind of argy wormwood microemulsions and preparation method thereof.
The object of the present invention is achieved like this: the present invention involved in ratio except as otherwise indicate except be mass ratio,
What product of the invention was prepared using such method:
1. preparation process
The preparation of 1.1 biennial wormwood extracts
Acquire argy wormwood May, clip cauline leaf is cleaned and dried in the shade, and is crushed, is 80% by crushed material mass percent concentration
Ethyl alcohol carries out ultrasonic wave extraction.The mass ratio of crushed material and ethyl alcohol is 1:20, ultrasonic extraction power 800w, ultrasonic extraction temperature
50 DEG C, ultrasonic extraction time 40min, clear liquid, vacuum distillation recycling ethyl alcohol are then filtered to take, control clear liquid temperature is lower than 55 DEG C,
Extracting solution is condensed into paste, biennial wormwood extract can be obtained.
The preparation of 1.2 solvents
The ratio that 3 kinds of methanol, dehydrated alcohol, ethyl acetate solvents are 1:3:2 in mass ratio is added at room temperature
In high speed compounding jar, feed liquid needs not cross stirring rotator, and the revolving speed that stirring rotator is adjusted after closed is 2500 revs/min, high speed
Stirring 15 minutes, is sufficiently mixed solvent and mixes.
The preparation of 1.3 emulsifiers
The ratio that 3 kinds of agriculture breast 500, EL-90, Span80 emulsifiers are 1:3:2 in mass ratio is added at room temperature
In high speed compounding jar, feed liquid needs not cross stirring rotator, and the revolving speed that stirring rotator is adjusted after closed is 2500 revs/min, high speed
Stirring 20 minutes, is sufficiently mixed emulsifier and mixes.
The preparation of 1.4 stabilizers
In mass ratio it is 1 by epichlorohydrin, 2,6 di tert butyl 4 methyl phenol (BHT), sodium sorbate:
The ratio of 1:1 is added at room temperature in high speed compounding jar, and feed liquid needs not cross stirring rotator, adjusts stirring rotator after closed
Revolving speed be 2500 revs/min, high-speed stirred 20 minutes, be sufficiently mixed stabilizer and mix.
The preparation of 1.5 antifreezing agents
It with propylene glycol is in mass ratio that 2:1 is mixed by ethylene glycol.
The preparation of 1.6 argy wormwood microemulsions
Take 5~10 parts of biennial wormwood extract, 5~10 parts of solvent, 10~20 parts of emulsifier, 1~3 part of stabilizer, antifreezing agent 5~
10 parts, 50~65 parts of deionized water in high pressure mixing kettle, adjustment rotating speed of agitator be 2500 revs/min, mixing kettle pressure 0.4
~0.5MPa, is kept for 45~50 minutes, then slowly bleed, after kettle to be mixed is safely opened, by the mixing in mixing kettle
Object imports homogenizer, and adjustment homogenizer operating pressure is 12~15MPa, while being handled with cooling water temperature, keeps by homogeneous
Fluid temperature is no more than 50 DEG C, and filling after homogeneous is argy wormwood microemulsion.
The invention has the advantages that or good effect: (1) preparation changes harmful to treasure using weeds argy wormwood as raw material, have compared with
Big ecological benefits and social benefit；(2) using water as matrix, flash-point is high, does not burn and does not explode, and produces, stores and using all pacifying
Entirely；(3) environmental pollution is small, comparatively safe to the producer, user and environment；(4) drug resistance that herbicide can be effectively relieved is asked
Topic；(5) working condition of preparation is simple, and the producer that missible oil can be produced under room temperature can produce said preparation.
2. application effect
The application effect of the invention patent is proved below by specific experiment
2.1 test materials and method
2.1.1 for trying herbicide
Argy wormwood microemulsion
2.1.2 for studying object
Soybean (eastern agriculture 42)
2.1.3 for trying weeds
Barnyard grass (Echinochloa crusgalli (L.) Beauv)
Herba setariae viridis (Setaria viridis (L.) Beauv)
Amaranthus retroflexus (Amaranthus retroflexus L.)
Piemarker (Abutilon theophrasti Medic.)
The activity of weeding of 2.2 argy wormwood microemulsions and safety to soybean
2.2.1 test process is arranged
Pot experiment, test are located at Northeast Agricultural University's plant protection greenhouse, and soil is black loam, and the content of organic matter is about
4.17%, soil pH=6.75, sow soybean, while sow weeds-Amaranthus retroflexus (Amaranthus retroflexus L.),
Piemarker (Abutilon theophrasti Medic.), barnyard grass (Echinochloa crusgalli (L.) Beauv), herba setariae viridis
(Setaria viridis(L.)Beauv).Soybean first trifoliolate leaf expansion, when 3~5 leaf of weeds, carry out cauline leaf process, adopt
With KNAPSACK Hydraulic Sprayer knapsack sprayer, four spray heads, nozzle model TEEJET80015VS is sprayed
214kPa, spouting liquid 150L/hm2.Argy wormwood microemulsion dosage is respectively 0 (CK), 50,80,110,140 and 170g a.i./hm2, 4
Secondary repetition.Application is placed on greenhouse normal management, the damage symptoms of routine observation weeds, 15 days after processing, 30 days secondary tune
Activity is looked into, is for the first time range estimation activity, second is fresh weight activity, and dose value is converted into logarithm, the conversion of fresh weight activity
At probability value, one probability value straight line of dosage logarithm is drawn, linear regression equation and ED are found out90(agent needed for inhibiting 90% weeds
Amount).The growth and development situation of routine observation soybean, safety of the visual assessment reagent agent to soybean, 15 days, 30 days after application
Measure soybean plant height and fresh weight.
2.2.2 Data Management Analysis method and formula
Data application Excel and the DPS software of investigation records is analyzed and processed, and statistical analysis is minimum using Fisher '
Significant difference LSD method, p=0.05, difference do not mark same letter significantly.Statistical analysis refers to " field experiment and statistics analysis "
(Ma Yuhua volume) and " agricultural experiment optimized regression design ".
Data processing formula:
2.2.3 result and analysis
2.2.3.1 the activity of weeding of argy wormwood microemulsion
Estimate the activity of weeding (table 1) managed everywhere, argy wormwood microemulsion 50g a.i./hm within 15 days after application2When, to barnyard grass
Activity of weeding is 60%, and the activity of weeding to herba setariae viridis is 60%, total activity of weeding 60% of gramineae weed；Piemarker is removed
Careless activity is 70%, and the activity of weeding to Amaranthus retroflexus is 70%, and total activity of weeding to broadleaf weeds is 70%；140g a.i./
hm2When, the activity of weeding to barnyard grass is 90%, and the activity of weeding to herba setariae viridis is 90%, total activity of weeding of gramineae weed
It is 90%；Activity of weeding to piemarker is 90%, and the activity of weeding to Amaranthus retroflexus is 90%, to total activity of weeding of broadleaf weeds
It is 90%.This shows that argy wormwood microemulsion has stronger activity of weeding to gramineae weed and broadleaf weeds.Variance analysis shows
Each test dose of argy wormwood microemulsion reaches extremely significant level to the activity of weeding difference of gramineae weed and broadleaf weeds.
1 argy wormwood microemulsion cauline leaf process of table 15 days to the range estimation activity for trying weeds
Variance analysis is carried out using Fisher ' least significant difference LSD method, is indicated with same letter person is indicated after column data
It is not significant in 5% level difference.
The weeds fresh weight (table 2) of each processing, argy wormwood microemulsion 50g a.i./hm are measured within 30 days after application2When, to grass family
The fresh weight activity of weeds is 88.2%, and the fresh weight activity to broadleaf weeds is 80.3%；140g a.i./hm2When, to grass family
Total fresh weight activity of weeds is 95.7%, and the fresh weight activity to broadleaf weeds is 87.6%.This shows argy wormwood microemulsion to grass
Section weeds and broadleaf weeds have stronger activity of weeding.Variance analysis show each dosage of argy wormwood microemulsion to and undergraduate course weeds
Extremely significant level is reached with the fresh weight activity difference of broadleaf weeds.
2 argy wormwood microemulsion cauline leaf process of table 30 days to the fresh weight activity for trying weeds
Variance analysis is carried out using Fisher ' least significant difference LSD method, is indicated with same letter person is indicated after column data
It is not significant in 5% level difference.
2.2.3.2 safety of the argy wormwood microemulsion to soybean
Each processing is estimated after application on the growth and development of soybean without influence, is administered 15 days and measures for 30 days the soybean of each processing
Plant height shows with fresh weight (table 3): each processed soybeans plant height of argy wormwood microemulsion and fresh weight with compare no significant difference.
Influence of the 3 argy wormwood microemulsion of table to soybean plant height and fresh weight
Variance analysis is carried out using Fisher ' least significant difference LSD method, is indicated with same letter person is indicated after column data
It is not significant in 5% level difference.
(4) specific embodiment
It is for a more detailed description to the present invention combined with specific embodiments below:
Embodiment one:
1. preparation process
The preparation of 1.1 biennial wormwood extracts
Acquire argy wormwood May, clip cauline leaf is cleaned and dried in the shade, and is crushed, is 80% by crushed material mass percent concentration
Ethyl alcohol carries out ultrasonic wave extraction.The mass ratio of crushed material and ethyl alcohol is 1:20, ultrasonic extraction power 800w, ultrasonic extraction temperature
50 DEG C, ultrasonic extraction time 40min, clear liquid, vacuum distillation recycling ethyl alcohol are then filtered to take, control clear liquid temperature is lower than 55 DEG C,
Extracting solution is condensed into paste, biennial wormwood extract can be obtained.
The preparation of 1.2 solvents
The ratio that 3 kinds of methanol, dehydrated alcohol, ethyl acetate solvents are 1:3:2 in mass ratio is added at room temperature
In high speed compounding jar, feed liquid needs not cross stirring rotator, and the revolving speed that stirring rotator is adjusted after closed is 2500 revs/min, high speed
Stirring 15 minutes, is sufficiently mixed solvent and mixes.
The preparation of 1.3 emulsifiers
The ratio that 3 kinds of agriculture breast 500, EL-90, Span80 emulsifiers are 1:3:2 in mass ratio is added at room temperature
In high speed compounding jar, feed liquid needs not cross stirring rotator, and the revolving speed that stirring rotator is adjusted after closed is 2500 revs/min, high speed
Stirring 20 minutes, is sufficiently mixed emulsifier and mixes.
The preparation of 1.4 stabilizers
In mass ratio it is 1 by epichlorohydrin, 2,6 di tert butyl 4 methyl phenol (BHT), sodium sorbate:
The ratio of 1:1 is added at room temperature in high speed compounding jar, and feed liquid needs not cross stirring rotator, adjusts stirring rotator after closed
Revolving speed be 2500 revs/min, high-speed stirred 20 minutes, be sufficiently mixed stabilizer and mix.
The preparation of 1.5 antifreezing agents
It with propylene glycol is in mass ratio that 2:1 is mixed by ethylene glycol.
The preparation of 1.6 argy wormwood microemulsions
Take 5 parts of biennial wormwood extract, 5 parts of solvent, 10 parts of emulsifier, 1 part of stabilizer, 5 parts of antifreezing agent, 50 parts of deionized water in
In high pressure mixing kettle, adjustment rotating speed of agitator is 2500 revs/min, mixing kettle 0.4~0.5MPa of pressure, is kept for 45~50 points
Clock, then slowly bleed, after kettle to be mixed is safely opened, imports homogenizer for the mixture in mixing kettle, adjusts homogeneous
Machine operating pressure is 12~15MPa, while being handled with cooling water temperature, keeps being no more than 50 DEG C by the fluid temperature of homogeneous,
Filling after matter is argy wormwood microemulsion.
Embodiment two:
1. preparation process
The preparation of 1.1 biennial wormwood extracts
Acquire argy wormwood May, clip cauline leaf is cleaned and dried in the shade, and is crushed, is 50% by crushed material mass percent concentration
Ethyl alcohol carries out ultrasonic wave extraction.The mass ratio of crushed material and ethyl alcohol is 1:10, ultrasonic extraction power 800w, ultrasonic extraction temperature
50 DEG C, ultrasonic extraction time 30min, clear liquid, vacuum distillation recycling ethyl alcohol are then filtered to take, control clear liquid temperature is lower than 55 DEG C,
Extracting solution is condensed into paste, biennial wormwood extract can be obtained.
The preparation of 1.2 solvents
The ratio that 3 kinds of methanol, dehydrated alcohol, ethyl acetate solvents are 1:3:2 in mass ratio is added at room temperature
In high speed compounding jar, feed liquid needs not cross stirring rotator, and the revolving speed that stirring rotator is adjusted after closed is 2500 revs/min, high speed
Stirring 15 minutes, is sufficiently mixed solvent and mixes.
The preparation of 1.3 emulsifiers
The ratio that 3 kinds of agriculture breast 500, EL-90, Span80 emulsifiers are 1:3:2 in mass ratio is added at room temperature
In high speed compounding jar, feed liquid needs not cross stirring rotator, and the revolving speed that stirring rotator is adjusted after closed is 2500 revs/min, high speed
Stirring 15 minutes, is sufficiently mixed emulsifier and mixes.
The preparation of 1.4 stabilizers
In mass ratio it is 1 by epichlorohydrin, 2,6 di tert butyl 4 methyl phenol (BHT), sodium sorbate:
The ratio of 1:1 is added at room temperature in high speed compounding jar, and feed liquid needs not cross stirring rotator, adjusts stirring rotator after closed
Revolving speed be 2500 revs/min, high-speed stirred 15 minutes, be sufficiently mixed stabilizer and mix.
The preparation of 1.5 antifreezing agents
It with propylene glycol is in mass ratio that 2:1 is mixed by ethylene glycol.
The preparation of 1.6 argy wormwood microemulsions
Take 10 parts of biennial wormwood extract, 10 parts of solvent, 20 parts of emulsifier, 3 parts of stabilizer, 10 parts of antifreezing agent, deionized water 65
For part in high pressure mixing kettle, adjustment rotating speed of agitator is 2500 revs/min, mixing kettle 0.4~0.5MPa of pressure, keeps 45~50
Minute, then slowly bleed, after kettle to be mixed is safely opened, imports homogenizer for the mixture in mixing kettle, adjustment is equal
Matter machine operating pressure is 12~15MPa, while being handled with cooling water temperature, keeps being no more than 50 DEG C by the fluid temperature of homogeneous,
Filling after homogeneous is argy wormwood microemulsion.
Claims (2)
1. a kind of argy wormwood microemulsion preparation method, it is characterised in that it is to be prepared according to the following steps:
1) preparation of biennial wormwood extract
Acquire argy wormwood May, clip cauline leaf is cleaned and dried in the shade, and is crushed, the ethyl alcohol for being 80% by crushed material mass percent concentration
Carry out ultrasonic wave extraction, the ratio of crushed material and ethyl alcohol is 1:20, ultrasonic extraction power 800w, and ultrasonic extraction temperature 50 C surpasses
Then sound extraction time 40min filters to take clear liquid, vacuum distillation recycling ethyl alcohol, control clear liquid temperature is lower than 55 DEG C, by extracting solution
It is condensed into paste, biennial wormwood extract can be obtained；
2) preparation of solvent
High speed is added in the ratio that 3 kinds of methanol, dehydrated alcohol, ethyl acetate solvents are 1:3:2 in mass ratio at room temperature
In compounding jar, feed liquid needs not cross stirring rotator, and the revolving speed that stirring rotator is adjusted after closed is 2500 revs/min, high-speed stirred
It 15 minutes, is sufficiently mixed solvent and mixes；
3) preparation of emulsifier
High speed is added in the ratio that 3 kinds of agriculture breast 500, EL-90, Span80 emulsifiers are 1:3:2 in mass ratio at room temperature
In compounding jar, feed liquid needs not cross stirring rotator, and the revolving speed that stirring rotator is adjusted after closed is 2500 revs/min, high-speed stirred
It 20 minutes, is sufficiently mixed emulsifier and mixes；
4) preparation of stabilizer
It is in mass ratio the ratio of 1:1:1 by epichlorohydrin, 2,6 di tert butyl 4 methyl phenol, sodium sorbate
It is added in high speed compounding jar at room temperature, feed liquid needs not cross stirring rotator, and the revolving speed that stirring rotator is adjusted after closed is
It 2500 revs/min, high-speed stirred 20 minutes, is sufficiently mixed stabilizer and mixes；
5) preparation of antifreezing agent
It with propylene glycol is in mass ratio that 2:1 is mixed by ethylene glycol；
6) preparation of argy wormwood microemulsion
Take 5~10 parts of biennial wormwood extract, 5~10 parts of solvent, 10~20 parts of emulsifier, 1~3 part of stabilizer, antifreezing agent 5~10
Part, 50~65 parts of deionized water in high pressure mixing kettle, adjustment rotating speed of agitator be 2500 revs/min, mixing kettle pressure 0.4~
0.5MPa, is kept for 45~50 minutes, then slowly bleed, after kettle to be mixed is safely opened, by the mixture in mixing kettle
Homogenizer is imported, adjustment homogenizer operating pressure is 12~15MPa, while being handled with cooling water temperature, is kept by the liquid of homogeneous
Temperature is no more than 50 DEG C, and filling after homogeneous is argy wormwood microemulsion.
2. a kind of a kind of argy wormwood microemulsion of argy wormwood microemulsion preparation method preparation according to claim 1.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110024812A (en) * | 2019-04-10 | 2019-07-19 | 湖北中医药大学 | Careless agent of a kind of natural suppression with Ai Fenwei raw material and preparation method thereof |
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| CN103271099A (en) * | 2013-06-19 | 2013-09-04 | 东北农业大学 | Artemisia annua micro emulsion and preparation method thereof |
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2018
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| CN1903029A (en) * | 2005-07-27 | 2007-01-31 | 拜尔农作物科学有限公司 | Microemulsion |
| CN101543520A (en) * | 2008-03-25 | 2009-09-30 | 北京申科联华科技有限公司 | Blumea oil liquid capsule and preparation method thereof |
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| CN103004767A (en) * | 2012-12-20 | 2013-04-03 | 西南大学 | Plant source acaricide microemulsion with 1% scopolactone and preparation method thereof |
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| CN110024812A (en) * | 2019-04-10 | 2019-07-19 | 湖北中医药大学 | Careless agent of a kind of natural suppression with Ai Fenwei raw material and preparation method thereof |
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