A kind of Pesticidal combination containing bitter pueraria root extract and sanguinarine and application thereof
Technical field
The invention belongs to technical field of pesticide, it is related to a kind of pharmaceutical agent combinations for preventing and treating 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 preventing and treating of worm.
Technical background
Due to convenient and swift, low cost, insecticidal effect substantially, chemical prevention is always the main of peasant control agricultural pests
Mode.But long-term use chemical pesticide is easily caused " 3R " problem, and most insecticide products to pest natural enemy and mammalian toxicity
Greatly, a series of problems, such as environmental pollution, person poultry poisoning, destruction ecological balance for being produced during use, people are 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 is received significant attention.At present, the vegetable insecticide species that China applies aborning is less, and drug effect is played
Slowly the shortcomings of, easily decomposition, insecticidal effect are influenceed big by region and pesticide application technology, its market is competing compared with conventional chemical pesticide
Strive power poor.To solve the above problems, vegetable insecticide advantage in itself is played, improve insecticidal effect, 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 is extremely enriched.It is among the people that omei mountain kudzuvine root, cane leaves chopping are spread to field, can not only make fertilizer but also can be with desinsection.Due to bitter Pueraria lobota
Insecticidal action, people have been also carried out more research to the insecticidal activity of bitter Pueraria lobota.Shi Rui etc. is by studying bitter kudzu to maize aphidses
Insecticidal activity, it is found that bitter kudzu n-butanol extract has very strong contact toxicity to corn Rhopalosiphum spp, its LD50It is worth and is
14.55mg·L-1;Li Biao etc. has found that bitter pueraria root extract has certain antifeedant activity and desinsection work to 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,
Herb, the root tuber of corydalis, the herb of macleaya cordata, the aerial part of snowpoppy of greater celandine are primarily present in, with antibacterial, are resisted
Scorching, antitumor, strengthen immunity and desinsection etc. are acted on.Used as botanical pesticide, it is to fish Dactylogyrus, pear sucker, oncomelania, dish
Blue or green worm, mite etc. have certain toxic action, and have the advantages that low toxicity, low-residual, non-environmental-pollution.Efficient bitter Pueraria lobota is carried
Take thing and sanguinarine is compounded, vegetable insecticide can be improved to agricultural insect management effect.At present, not yet find hardship
Pueraria root extract carries out compounding for the relevant report of agricultural insect pests control with sanguinarine.
The content 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 the agricultural pests such as microemulsion, preventing and treating cabbage pieris, diamondback moth, maize army worm, tea aphid, smaller green leaf hopper.
Based on this purpose, the technical scheme is that:
A kind of Pesticidal combination, it is characterised in that the active component in the Pesticidal combination is that weight ratio is 1:5~5:
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 both weight ratios are 3:1.
Further, the present invention also provides a kind of microemulsion, it is characterised in that it includes above-mentioned Pesticidal combination and helps
Agent;Wherein the consumption of Pesticidal combination is 1~20 weight %, and auxiliary agent is the weight % of solvent 20~40, the weight of emulsifying agent 10~25
Amount %, the weight % of cosolvent 5~15, the weight % of antifreezing agent 3~5, remaining supplies 100 weight % with water.
The solvent is methyl alcohol.
The emulsifying agent is styryl phenyl APEO, APES, polyaryl phenol polyethenoxy
One or more combination in ether phosphate.
The cosolvent is isopropanol, one kind of n-butanol or mixture.
The antifreezing agent is ethylene glycol.
Preferably, the consumption of active ingredient is 4~16 weight %;It is highly preferred that the consumption of active ingredient is 10 weight %;
Further, the present invention provides above-mentioned Pesticidal combination and/or microemulsion preventing and treating cabbage pieris, diamondback moth, jade
The purposes of rice mythimna separata, tea aphid or smaller green leaf hopper.
Described bitter pueraria root extract preparation method is:The root of bitter Pueraria lobota is cut into l-2cm segments long, is dried in 80 DEG C of baking ovens
It is dry, 50 mesh sieves were crushed, collect standby.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, be concentrated under reduced pressure leaching liquor, and 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, extract concentrate drying, concentrate AB-8 resins
Static Adsorption is overnight.It is 3 with water and methanol ratio:7 mixed solvent wash-out, by eluent concentrate drying, as bitter Pueraria lobota is extracted
Thing.
Unless otherwise indicated, " % " in this specification is " percentage by weight ".
The preparation method of the application microemulsion:In each components in certain proportion input emulsification cutter that will be measured;Cut at a high speed
Cut 30 minutes, you can obtain the product, spraying is used after dilution.
Microemulsion is a kind of novel environment friendly formulation of water baseization, and with water as main solvent, the good dispersion in water oozes to target
Permeability is strong, adhesive force is good, so as to agricultural pests are played with more preferable toxic action.Active ingredient used by microemulsion of the invention is
Plant medical agent, to non-target organism and Environmental security, to person poultry harmless, is adapted to be used in various crop, can effectively prevent and treat
The agricultural pests such as cabbage pieris, diamondback moth, maize army worm, tea aphid, smaller green leaf hopper.Meanwhile, using mixture formulation, 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 purpose , technical scheme and advantage of the present invention be clearer, the present invention is entered with following instantiation
Row explanation, but the present invention is not limited to these specific embodiments.
Bitter pueraria root extract preparation method:The root of bitter Pueraria lobota is cut into l-2cm segments long, is dried in 80 DEG C of baking ovens, crushed
50 mesh sieves are crossed, is collected standby.Refluxing extraction is carried out at 70 DEG C using 75% ethanol water, each 8h is extracted 3 times, collected
Leaching liquor, is filtered to remove residue, and be concentrated under reduced pressure leaching liquor, 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, extract concentrate drying, concentrate AB-8 resin Static Adsorptions
Overnight.It is 3 with water and methanol ratio:7 mixed solvent wash-out, by eluent concentrate drying, as bitter pueraria root extract.
First, embodiment is prepared
Embodiment 1:
Bitter pueraria root extract 1.67wt%;Sanguinarine 8.33wt%;Methyl alcohol 30wt%, APES 10wt%;
Isopropanol 10wt%;Ethylene glycol 3wt%;Surplus is supplied with water.
Embodiment 2:
Bitter pueraria root extract 2.5wt%;Sanguinarine 7.5wt%;Methyl alcohol 30wt%, APES 10wt%;It is different
Propyl alcohol 10wt%;Ethylene glycol 3wt%;Surplus is supplied with water.
Embodiment 3:
Bitter pueraria root extract 5wt%;Sanguinarine 5wt%;Methyl alcohol 30wt%, APES 10wt%;Isopropanol
10wt%;Ethylene glycol 3wt%;Surplus is supplied with water.
Embodiment 4:
Bitter pueraria root extract 7.5wt%;Sanguinarine 2.5wt%;Methyl alcohol 30wt%, APES 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%;Methyl alcohol 30wt%, APES 10wt%;
Isopropanol 10wt%;Ethylene glycol 3wt%;Surplus is supplied with water.
Embodiment 6:
Bitter pueraria root extract 3wt%;Sanguinarine 1wt%;Methyl alcohol 30wt%, APES 10wt%;Isopropanol
10wt%;Ethylene glycol 3wt%;Surplus is supplied with water.
Embodiment 7:
Bitter pueraria root extract 6wt%;Sanguinarine 2wt%;Methyl alcohol 30wt%, APES 10wt%;Isopropanol
10wt%;Ethylene glycol 3wt%;Surplus is supplied with water.
Embodiment 8:
Bitter pueraria root extract 9wt%;Sanguinarine 3wt%;Methyl alcohol 30wt%, APES 10wt%;Isopropanol
10wt%;Ethylene glycol 3wt%;Surplus is supplied with water.
Embodiment 9:
Bitter pueraria root extract 12wt%;Sanguinarine 4wt%;Methyl alcohol 30wt%, APES 10wt%;Isopropanol
10wt%;Ethylene glycol 3wt%;Surplus is supplied with water.
2nd, biological Examples
1st, indoor insecticidal determination of activity
1.1 Study on Fungicide Toxicity
With reference to farm-chemical indoor determination test rule, the poison for examination single dose to 3 age armyworm larvaes is determined using dip method
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 the age of mythimna separata 3 children
Worm impregnates 10s in each concentration liquid, takes out, and unnecessary liquid is blotted with blotting paper, is placed in the clean container for being placed with fresh food
In.Dimethyl sulfoxide (DMSO) is compared.Each concentration processes 20, is repeated 4 times.Then treated 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, is death can not normally creep.Meter
The insect population death rate, corrected mortality are calculated, and the toxicity regression curve and LC of two single doses are obtained by probit analysis method50Value.
The complex role research of 1.2 bitter pueraria root extract things and sanguinarine
Bitter pueraria root extract and sanguinarine are compounded:Two kinds of active compounds are configured to 1 by active ingredient:5,1:3,1:1,3:
1,5:1 totally 5 proportioning (mass ratio).Above-mentioned formula carries out toxicity test by Study on Fungicide Toxicity method respectively.
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, 80≤CTC<120 is summation action, CTC<80 is antagonism.
2. result of the test
2.1 Study on Fungicide Toxicity results
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 larvaes50It is 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 Toxicity Determination result to 3 age armyworm larvaes with sanguinarine
As shown in Table 2, all proportions of bitter pueraria root extract and sanguinarine compounding show certain synergistic effect, but not
With compound proportion coefficient of synergism difference.Wherein, the compound proportion of bitter Pueraria lobota crude extract and sanguinarine is 3:When 1, co-toxicity coefficient
Highest, is 203.31.
2nd, field experiment
1. test method
Cabbage caterpillar and diamondback moth experiment are carried out in Chengdu double fluid area;Maize army worm experiment is carried out in Renshou County;Tea aphid is tried
Test and carry 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, middle setting isolation strip.In cabbage caterpillar, diamondback moth, armyworm control experiment, each embodiment presses active ingredient 20g/
hm2Dosage sprayed against plant, medicament control is 1% sanguinarine wettable powder and 10% bitter pueraria root extract micro emulsion
Agent, consumption is active ingredient 20g/hm2;In tea aphid, tea lesser leafhopper controlling experiment, each embodiment presses active ingredient 2g/
hm2Dosage sprayed against plant, medicament control is 1% sanguinarine wettable powder and 10% bitter pueraria root extract micro emulsion
Agent, consumption is active ingredient 2g/hm2;Using spray clear water as blank, often treatment is repeated 4 times for experiment, and random district's groups are entered
Row cell is arranged.1d, 3d, 7d and 14d investigate the borer population in each cell after dispenser, according to clear water check plot and the borer population for the treatment of region
Prevention effect is calculated, and carries out significance difference analysis.
In formula:TaThe individual amount survived after the preventing and treating of-treatment region;TbThe individual amount of survival before the preventing and treating of-treatment region;
CaThe individual amount survived after the preventing and treating of-check plot;CbThe individual amount of survival before the preventing and treating of-check plot.
The preparation of 10% bitter pueraria root extract microemulsion:Omei mountain kudzuvine root extract 10kg is weighed, is dissolved in 20kg n-butanols, then
APES 5kg, calcium dodecyl benzene sulfonate 15kg are added, is mixed under the stirring condition that temperature is 45 DEG C;
While stirring, water ion water 50kg is slowly added dropwise, continues to stir 1h after completion of dropwise addition, that is, obtain 10% bitter pueraria root extract micro emulsion
Agent 100kg.The preparation of gained meets national microemulsion performance indications requirement on the Testing index such as stability, outward appearance.
2. result of the test
9 complex microemulsions of bitter pueraria root extract and sanguinarine are determined to maize army worm, cabbage pieris, diamondback moth, tea
Aphid, the field control effect of tea lesser leafhopper, are shown in Table 3, table 4, table 5, table 6 and table 7.
As can be seen that different embodiments have to 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 active ingredient are 10wt%, it is 3 that both match:When 1
(embodiment 4), higher than other proportioning (embodiment 1, embodiment 2, embodiment 3, embodiments 5 to above pest controling effect preferably
With comparison medicament treatment).When active constituent content is less than 10wt% (embodiment 6 and embodiment 7), to insects such as maize army worms
Prevention effect be decreased obviously;When active constituent content is higher than 10wt% (embodiment 8 and embodiment 9), to maize army worm etc.
The prevention effect of insect is without significantly improving.It can thus be seen that when bitter pueraria root extract and sanguinarine active ingredient are 10wt%, and
Both proportionings are 3:1 is best available component content and proportioning, is had well to Corn mythimna separata, cabbage pieris, diamondback moth
Prevention effect.
Data can be seen that different embodiments from table 6 and the table of table 7 has different degrees of to tea aphid, tea lesser leafhopper
Preventive and therapeutic effect, effect is obviously higher than the sanguinarine wettable powder of comparison medicament 1% and 10% bitter pueraria root extract microemulsion.Its
In, when bitter pueraria root extract and sanguinarine active ingredient are 10wt%, it is 3 to be matched at both:When 1 (embodiment 4), to tea aphid, tea
Smaller green leaf hopper prevention effect preferably, (embodiment 1, embodiment 2, embodiment 3, at embodiment 5 and comparison medicament is matched higher than other
Reason).When active constituent content is less than 10wt% (embodiment 6 and embodiment 7), to tea aphid, the prevention effect of tea lesser leafhopper
It is remarkably decreased;When active constituent content is higher than 10wt% (embodiment 8 and embodiment 9), to tea aphid, the preventing and treating of tea lesser leafhopper
Effect is also significantly lower than embodiment 4.It can thus be seen that work as hardship pueraria root extract and sanguinarine active ingredient for 10wt%, and two
Person's proportioning is 3:1 is best available component content and proportioning, has good prevention effect to tea aphid, tea lesser leafhopper.
These results suggest that, when bitter pueraria root extract and sanguinarine active ingredient are 10wt%, it is 3 to be matched at both:When 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 treatment).
The field efficacy of the different embodiment treatment preventing and treating maize army worms of table 3
The field efficacy of the different embodiment treatment preventing and treating cabbage caterpillars of table 4
The field efficacy of the different embodiment treatment preventing and treating diamondback moths of table 5
The field efficacy of the different embodiment treatment preventing and treating tea aphids of table 6
The field efficacy of the different embodiment treatment preventing and treating tea lesser leafhoppers of table 7
A kind of Pesticidal combination containing bitter pueraria root extract and sanguinarine of the invention and application thereof 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 present disclosure, process conditions
To realize corresponding other purposes, its correlation changes all without departing from present disclosure, and all similar replacements and change are right
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.