CN106857696B - A kind of Pesticidal combination and application thereof containing bitter pueraria root extract and sanguinarine - Google Patents
A kind of Pesticidal combination and application thereof containing bitter pueraria root extract and sanguinarine Download PDFInfo
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- CN106857696B CN106857696B CN201710233197.7A CN201710233197A CN106857696B CN 106857696 B CN106857696 B CN 106857696B CN 201710233197 A CN201710233197 A CN 201710233197A CN 106857696 B CN106857696 B CN 106857696B
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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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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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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Abstract
The present invention relates to the Pesticidal combinations of a kind of bitter pueraria root extract and sanguinarine, and by weight, the active constituent ratio in the Pesticidal combination is 1:5~5:1, and the Pesticidal combination is further configured to microemulsion.Pesticidal combination of the invention remains good compounding stability between two kinds of active components when in use, compared with single dose prevents and treats agricultural pests, expands pest control range, reduce pest resistance to insecticide, drug effect is significantly improved, is enhanced one's market competitiveness, has preferably ensured agricultural production security.The Pesticidal combination can effectively prevent the agricultural pests such as cabbage pieris, diamondback moth, maize army worm, tea aphid, smaller green leaf hopper.
Description
Technical field
The invention belongs to technical field of pesticide, it is related to a kind of for preventing and treating the pharmaceutical agent combinations of agricultural pests, relates more specifically to
Pharmaceutical agent combinations are configured to microemulsion, for the agricultural evil such as maize army worm, cabbage pieris, diamondback moth, tea aphid, tea lesser leafhopper
The prevention and treatment of worm.
Technical background
Since convenient and efficient, at low cost, insecticidal effect is obvious, chemical prevention is always that peasant controls the main of agricultural pests
Mode.But chemical pesticide is used for a long time and easily leads to " 3R " problem, and most insecticide products are to pest natural enemy and mammalian toxicity
Greatly, the environmental pollution that generates in use process, destroys a series of problems, such as ecological balance at person poultry poisoning, and people is allowed " to talk medicine color
Become ".With agrotechnical development, insecticidal activity is high, safe, degradable free from environmental pollution in the environment to non-target organism
Vegetable insecticide receives significant attention.Currently, the vegetable insecticide type that China applies in production is less, and drug effect plays
Slowly, the disadvantages of easy decomposition, insecticidal effect are influenced by region and pesticide application technology, its market is competing compared with conventional chemical pesticide
It is poor to strive power.To solve the above problems, playing the advantage of vegetable insecticide itself, insecticidal effect is improved, is enhanced one's market competitiveness, led to
Plant insecticide material can often be compounded.
Bitter Pueraria lobota is plants of the genus, and alias pueraria omeiensis Wang et Tang is distributed mainly on Tibet, Yunnan, Sichuan, Guangxi, Guizhou etc.
Ground, resource are extremely abundant.It is civil that omei mountain kudzuvine root, cane leaves chopping are spread to field, can not only it make fertilizer but also can be with desinsection.Due to bitter Pueraria lobota
Insecticidal action, people have also carried out more research to the insecticidal activity of bitter Pueraria lobota.Shi Rui etc. is by studying bitter kudzu to maize aphids
Insecticidal activity, it is found that bitter kudzu n-butanol extract has very strong contact toxicity, LD to corn Rhopalosiphum spp50Value is
14.55mg·L-1；Li Biao etc. has found that bitter pueraria root extract has certain antifeedant activity and desinsection living corn borer and cabbage caterpillar
Property, and concentration more high activity is stronger, is a kind of potential vegetable insecticide.Sanguinarine is a kind of benzylisoquinoline alkaloid,
Be primarily present in the herb of greater celandine, the root tuber of corydalis, the herb of macleaya cordata, snowpoppy aerial part, there is antibacterial, anti-
The effects of scorching, antitumor, strengthen immunity and desinsection.As botanical pesticide, to fish Dactylogyrus, pear sucker, oncomelania, dish
Green worm, mite etc. have certain toxic action, and have many advantages, such as low toxicity, low-residual, non-environmental-pollution.Efficient bitter Pueraria lobota is mentioned
It takes object and sanguinarine to be compounded, vegetable insecticide can be improved to agricultural insect management effect.Currently, not yet discovery will be bitter
Pueraria root extract carries out compounding the relevant report for agricultural insect pests control with sanguinarine.
Summary of the invention
The present invention provides the complex composition of bitter pueraria root extract and sanguinarine, and the two has synergistic effect, further, will
The two is prepared into microemulsion, the agricultural pests such as prevention and treatment cabbage pieris, diamondback moth, maize army worm, tea aphid, smaller green leaf hopper.
Based on this purpose, the technical solution of the present invention is as follows:
A kind of Pesticidal combination, which is characterized in that it is 1:5~5 that the active constituent in the Pesticidal combination, which is weight ratio:
The composition of 1 bitter pueraria root extract and sanguinarine.
Preferably, the weight ratio of the two is 1:1~5:1；It is highly preferred that the weight ratio of the two is 3:1.
Further, the present invention also provides a kind of microemulsions, which is characterized in that it includes above-mentioned Pesticidal combination and helps
Agent；Wherein the dosage of Pesticidal combination is 1~20 weight %, and auxiliary agent is 20~40 weight % of solvent, 10~25 weight of emulsifier
% is measured, 5~15 weight % of cosolvent, 3~5 weight % of antifreezing agent, remaining supplies 100 weight % with water.
The solvent is methanol.
The emulsifier is styryl phenyl polyoxyethylene ether, alkyl phenol polyoxyethylene ether, polyaryl phenol polyethenoxy
The combination of one or more of ether phosphate.
The cosolvent is isopropanol, one kind of n-butanol or mixture.
The antifreezing agent is ethylene glycol.
Preferably, the dosage of effective component is 4~16 weight %；It is highly preferred that the dosage of effective component is 10 weight %；
Further, the present invention provides above-mentioned Pesticidal combination and/or microemulsion prevents and treats cabbage pieris, diamondback moth, jade
The purposes of rice mythimna separata, tea aphid or smaller green leaf hopper.
The bitter pueraria root extract is dried in 80 DEG C of baking ovens the preparation method comprises the following steps: the root of bitter Pueraria lobota to be cut into the segment of l-2cm long
It is dry, it crushed 50 meshes, collect spare.Refluxing extraction is carried out at 70 DEG C using 75% ethanol water, each 8h extracts 3
It is secondary, leaching liquor is collected, residue is filtered to remove, leaching liquor is concentrated under reduced pressure, collection obtains dry medicinal extract.Medicinal extract is diluted with water,
With extracting n-butyl alcohol, the ratio of extractant and concentrate aqueous is 4:1, and extract liquor is concentrated and dried, concentrate AB-8 resin
Static Adsorption is stayed overnight.The mixed solvent elution for being 3:7 with water and methanol ratio, eluent is concentrated and dried, and as bitter Pueraria lobota is extracted
Object.
Unless otherwise indicated, " % " in this specification is " weight percent ".
The preparation method of the application microemulsion: each components in certain proportion measured is put into emulsification cutter；High speed is cut
It cuts 30 minutes, the product can be obtained, used by spraying after dilution.
Microemulsion is a kind of novel environment friendly dosage form of water baseization, and using water as main solvent, good dispersion, seeps target in water
Permeability is strong, adhesive force is good, to play better toxic action to agricultural pests.Effective component used in microemulsion of the invention is
Plant medical agent, to person poultry harmless, is suitble to use in various crop, can effectively prevent to non-target organism and Environmental security
The agricultural pests such as cabbage pieris, diamondback moth, maize army worm, tea aphid, smaller green leaf hopper.Meanwhile using mixed dosage form, relative to list
For agent, insecticidal spectrum is wide, reduces pest resistance to insecticide, hence it is evident that improves drug effect, enhances one's market competitiveness.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention with following specific example into
Row explanation, but the present invention is not limited to these specific embodiments.
The root of bitter Pueraria lobota: being cut into the segment of l-2cm long by bitter pueraria root extract preparation method, is dried in 80 DEG C of baking ovens, is crushed
50 meshes are crossed, are collected spare.Refluxing extraction is carried out at 70 DEG C using 75% ethanol water, each 8h is extracted 3 times, is collected
Leaching liquor is filtered to remove residue, and leaching liquor is concentrated under reduced pressure, and collection obtains dry medicinal extract.Medicinal extract is diluted with water, n-butanol is used
The ratio of extraction, extractant and concentrate aqueous is 4:1, and extract liquor is concentrated and dried, concentrate AB-8 resin Static Adsorption
Overnight.The mixed solvent elution for being 3:7 with water and methanol ratio, eluent is concentrated and dried, as bitter pueraria root extract.
One, embodiment is prepared
Embodiment 1:
Bitter pueraria root extract 1.67wt%；Sanguinarine 8.33wt%；Methanol 30wt%, alkyl phenol polyoxyethylene ether 10wt%；
Isopropanol 10wt%；Ethylene glycol 3wt%；Surplus is supplied with water.
Embodiment 2:
Bitter pueraria root extract 2.5wt%；Sanguinarine 7.5wt%；Methanol 30wt%, alkyl phenol polyoxyethylene ether 10wt%；It is different
Propyl alcohol 10wt%；Ethylene glycol 3wt%；Surplus is supplied with water.
Embodiment 3:
Bitter pueraria root extract 5wt%；Sanguinarine 5wt%；Methanol 30wt%, alkyl phenol polyoxyethylene ether 10wt%；Isopropanol
10wt%；Ethylene glycol 3wt%；Surplus is supplied with water.
Embodiment 4:
Bitter pueraria root extract 7.5wt%；Sanguinarine 2.5wt%；Methanol 30wt%, alkyl phenol polyoxyethylene ether 10wt%；It is different
Propyl alcohol 10wt%；Ethylene glycol 3wt%；Surplus is supplied with water.
Embodiment 5:
Bitter pueraria root extract 8.33wt%；Sanguinarine 1.67wt%；Methanol 30wt%, alkyl phenol polyoxyethylene ether 10wt%；
Isopropanol 10wt%；Ethylene glycol 3wt%；Surplus is supplied with water.
Embodiment 6:
Bitter pueraria root extract 3wt%；Sanguinarine 1wt%；Methanol 30wt%, alkyl phenol polyoxyethylene ether 10wt%；Isopropanol
10wt%；Ethylene glycol 3wt%；Surplus is supplied with water.
Embodiment 7:
Bitter pueraria root extract 6wt%；Sanguinarine 2wt%；Methanol 30wt%, alkyl phenol polyoxyethylene ether 10wt%；Isopropanol
10wt%；Ethylene glycol 3wt%；Surplus is supplied with water.
Embodiment 8:
Bitter pueraria root extract 9wt%；Sanguinarine 3wt%；Methanol 30wt%, alkyl phenol polyoxyethylene ether 10wt%；Isopropanol
10wt%；Ethylene glycol 3wt%；Surplus is supplied with water.
Embodiment 9:
Bitter pueraria root extract 12wt%；Sanguinarine 4wt%；Methanol 30wt%, alkyl phenol polyoxyethylene ether 10wt%；Isopropanol
10wt%；Ethylene glycol 3wt%；Surplus is supplied with water.
Two, biological Examples
1, indoor insecticidal determination of activity
1.1 Study on Fungicide Toxicity
Referring to farm-chemical indoor determination test rule, using dip method measurement for examination single dose to the poison of 3 age armyworm larvaes
Kill activity.Bitter pueraria root extract and sanguinarine are respectively set into 5 concentration for the treatment of (being diluted with dimethyl sulfoxide solvent).Take 3 age of mythimna separata young
Worm impregnates 10s in each concentration liquid, takes out, blots extra medical fluid with blotting paper, be placed in the clean container for being placed with fresh food
In.Dimethyl sulfoxide compares.Each concentration handles 20, is repeated 4 times.Then processed test worm is put into artificial intelligence gas
Wait raising in case culture (28 DEG C ± 1 DEG C, RH=80%).Number of dead and live insects is checked after 72h, cannot normally creep as death.Meter
The insect population death rate, corrected mortality are calculated, and finds out by probit analysis method the toxicity regression curve and LC of two single doses50Value.
The complex role research of 1.2 bitter pueraria root extract objects and sanguinarine
Bitter pueraria root extract and sanguinarine are compounded: two kinds of raw medicines are configured to 1:5,1:3,1:1,3 by effective component:
1,5:1 totally 5 proportions (mass ratio).Above-mentioned formula presses Study on Fungicide Toxicity method respectively and carries out toxicity test.
Mixture synergy is evaluated, with LC50Based on value, mixture joint is evaluated by calculating mixture co-toxicity coefficient
Type of action.
CTC>=120 are synergistic effect, and 80≤CTC<120 are summation action, and CTC<80 are antagonism.
2. test result
2.1 Study on Fungicide Toxicity results
The Toxicity Determination result of the 12 kinds of medicaments of table to mythimna separata
As it can be seen from table 1 LC of the bitter Pueraria lobota crude extract to 3 age armyworm larvaes50For 262.0431 μ g/mL；Sanguinarine is to 3 ages
The LC50 of armyworm larvae is 629.9799 μ g/mL.
The bitter pueraria root extract of table 2 compounds the The Toxicity Determination result to 3 age armyworm larvaes with sanguinarine
As shown in Table 2, bitter pueraria root extract and all proportions of sanguinarine compounding show certain synergistic effect, but not
With compound proportion coefficient of synergism difference.Wherein, when the compound proportion of bitter Pueraria lobota crude extract and sanguinarine is 3:1, co-toxicity coefficient
Highest is 203.31.
Two, field experiment
1. test method
Cabbage caterpillar and diamondback moth test are carried out in Chengdu double fluid area；Maize army worm test is carried out in Renshou County；The examination of tea aphid
It tests and carries out in Ya'an Mingshan County.Experimental field soil types is clay, and soil fertility is medium, and cell cultivation condition is consistent.Cell
Area 20m2, centre setting isolation strip.In cabbage caterpillar, diamondback moth, armyworm control test, each embodiment presses effective component 20g/
hm2Dosage it is spraying against plant, medicament control is 1% sanguinarine wettable powder and 10% bitter pueraria root extract micro emulsion
Agent, dosage are effective component 20g/hm2；In tea aphid, tea lesser leafhopper controlling experiment, each embodiment presses effective component 2g/
hm2Dosage it is spraying against plant, medicament control is 1% sanguinarine wettable powder and 10% bitter pueraria root extract micro emulsion
Agent, dosage are effective component 2g/hm2；To spray clear water as blank control, test every processing and be repeated 4 times, random district's groups into
The arrangement of row cell.1d, 3d, 7d and 14d investigate the borer population in each cell after application, according to the borer population of clear water check plot and treatment region
Control efficiency is calculated, and carries out significance difference analysis.
In formula: TaThe individual amount survived after the prevention and treatment of-treatment region；TbThe individual amount survived before the prevention and treatment of-treatment region；
CaThe individual amount survived after the prevention and treatment of-check plot；CbThe individual amount survived before the prevention and treatment of-check plot.
The preparation of 10% bitter pueraria root extract microemulsion: weighing omei mountain kudzuvine root extract 10kg, be dissolved in 20kg n-butanol, then
Alkyl phenol polyoxyethylene ether 5kg, calcium dodecyl benzene sulfonate 15kg is added, is mixed in the case where temperature is 45 DEG C of stirring condition；?
While stirring, water ion water 50kg is slowly added dropwise, continues to stir 1h after completion of dropwise addition to get to 10% bitter pueraria root extract micro emulsion
Agent 100kg.Resulting preparation meets national microemulsion performance indicator requirement on the Testing index such as stability, appearance.
2. test result
9 complex microemulsions of bitter pueraria root extract and sanguinarine are determined to maize army worm, cabbage pieris, diamondback moth, tea
Aphid, tea lesser leafhopper field control effect, be shown in Table 3, table 4, table 5, table 6 and table 7.
As can be seen that different embodiments have maize army worm, cabbage pieris and diamondback moth from table 3, table 4 and table 5
Different degrees of preventive and therapeutic effect.Wherein, when bitter pueraria root extract and sanguinarine effective component are 10wt%, and the two proportion is 3:1
(embodiment 4), it is best to the above pest controling effect, it is higher than other proportion (embodiment 1, embodiment 2, embodiment 3, embodiments 5
With comparison medicament processing).When active constituent content is lower than 10wt% (embodiment 6 and embodiment 7), to pests such as maize army worms
Control efficiency be decreased obviously；When active constituent content is higher than 10wt% (embodiment 8 and embodiment 9), to maize army worm etc.
The control efficiency of pest is without significantly improving.It can thus be seen that when bitter pueraria root extract and sanguinarine effective component are 10wt%, and
It is best available component content and proportion that the two proportion, which is 3:1, is had well to Corn mythimna separata, cabbage pieris, diamondback moth
Control efficiency.
From 7 table of table 6 and table data can be seen that different embodiments have to tea aphid, tea lesser leafhopper it is different degrees of
Preventive and therapeutic effect, effect is obviously higher than 1% sanguinarine wettable powder of comparison medicament and 10% bitter pueraria root extract microemulsion.Its
In, when bitter pueraria root extract and sanguinarine effective component are 10wt%, when the two proportion is 3:1 (embodiment 4), to tea aphid, tea
Smaller green leaf hopper control efficiency is best, is higher than other proportions (embodiment 1, embodiment 2, embodiment 3, at embodiment 5 and comparison medicament
Reason).When active constituent content is lower than 10wt% (embodiment 6 and embodiment 7), to the control efficiency of tea aphid, tea lesser leafhopper
It is remarkably decreased；Prevention and treatment when active constituent content is higher than 10wt% (embodiment 8 and embodiment 9), to tea aphid, tea lesser leafhopper
Effect is also significantly lower than embodiment 4.It can thus be seen that working as hardship pueraria root extract and sanguinarine effective component for 10wt%, and two
It is best available component content and proportion that person's proportion, which is 3:1, has good control efficiency to tea aphid, tea lesser leafhopper.
These results suggest that when bitter pueraria root extract and sanguinarine effective component are 10wt%, when the two proportion is 3:1
(embodiment 4) has good field control effect to maize army worm, cabbage pieris, diamondback moth, tea aphid, tea lesser leafhopper, and
Better than other embodiments (embodiment 1, embodiment 2, embodiment 3, embodiment 5, embodiment 6, embodiment 7, embodiment 8, embodiment
9, and comparison medicament processing).
The field efficacy of the different embodiment processing prevention and treatment maize army worms of table 3
The field efficacy of the different embodiment processing prevention and treatment cabbage caterpillars of table 4
The field efficacy of the different embodiment processing prevention and treatment diamondback moths of table 5
The field efficacy of the different embodiment processing prevention and treatment tea aphids of table 6
The field efficacy of the different embodiment processing prevention and treatment tea lesser leafhoppers of table 7
A kind of Pesticidal combination and application thereof containing bitter pueraria root extract and sanguinarine of the invention has passed through specific real
Example is applied to be described.Those skilled in the art can use for reference the links such as the appropriate feed change of the contents of the present invention, process conditions
To realize that corresponding other purposes, correlation change all without departing from the contents of the present invention, all similar substitutions and modifications pair
It is it will be apparent that being considered as being included within the scope of the present invention for those skilled in the art.
Claims (10)
1. a kind of Pesticidal combination, which is characterized in that the active constituent in the Pesticidal combination is that weight ratio is 1:5~5:1
The composition of bitter pueraria root extract and sanguinarine；
The bitter pueraria root extract is dried in 80 DEG C of baking ovens the preparation method comprises the following steps: the root of bitter Pueraria lobota to be cut into the segment of l-2cm long,
Crushed 50 meshes, collection is spare, and refluxing extraction is carried out at 70 DEG C using 75% ethanol water, and each 8h is extracted 3 times,
Leaching liquor is collected, residue is filtered to remove, leaching liquor is concentrated under reduced pressure, collection obtains dry medicinal extract.Medicinal extract is diluted with water, with just
The ratio of butanol, before immunoassay, extractant and concentrate aqueous is 4:1, and extract liquor is concentrated and dried, and concentrate is static with AB-8 resin
Absorption overnight, is eluted with the mixed solvent that water and methanol ratio are 3:7, eluent is concentrated and dried, as bitter pueraria root extract.
2. Pesticidal combination according to claim 1, which is characterized in that the weight ratio of bitter pueraria root extract and sanguinarine is 1:
1~5:1.
3. Pesticidal combination according to claim 2, which is characterized in that the weight ratio of bitter pueraria root extract and sanguinarine is 3:
1。
4. a kind of microemulsion, which is characterized in that it includes the claims 1 to 3 any Pesticidal combinations and auxiliary agent；Wherein
The dosage of Pesticidal combination is 1~20 weight %, and auxiliary agent is 20~40 weight % of solvent, 10~25 weight % of emulsifier, hydrotropy
5~15 weight % of agent, 3~5 weight % of antifreezing agent, remaining supplies 100 weight % with water.
5. microemulsion according to claim 4, which is characterized in that the solvent is methanol.
6. microemulsion according to claim 4, which is characterized in that the emulsifier is styryl phenyl polyoxyethylene
The combination of one or more of ether, alkyl phenol polyoxyethylene ether, polyarylphenol-polyoxyethylene ether phosphate.
7. microemulsion according to claim 4, which is characterized in that the cosolvent be isopropanol, n-butanol one kind or
Mixture.
8. microemulsion according to claim 4, which is characterized in that the antifreezing agent is ethylene glycol.
9. microemulsion according to claim 4, which is characterized in that the dosage of Pesticidal combination is 4~16 weight %.
10. Pesticidal combination according to any one of claims 1 to 3 or any microemulsion prevention and treatment of claim 4 to 9
Cabbage pieris, diamondback moth, maize army worm, tea aphid or smaller green leaf hopper purposes.
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