CN1209020C - Insecticidal composition containing methylamino abamectin and organophosphorus compound - Google Patents

Insecticidal composition containing methylamino abamectin and organophosphorus compound Download PDF

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CN1209020C
CN1209020C CN 03105327 CN03105327A CN1209020C CN 1209020 C CN1209020 C CN 1209020C CN 03105327 CN03105327 CN 03105327 CN 03105327 A CN03105327 A CN 03105327A CN 1209020 C CN1209020 C CN 1209020C
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methylamino avermectin
pesticidal combination
agent
concentration
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CN1524421A (en
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李建中
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Abstract

The invention relates to an insecticidal composition which is characterized by comprising a) methylamino abamectin and b) at least one organophosphorus insecticidal compound as active ingredients, wherein the weight ratio of the component a) to the component b) is 1: 0.1-100.

Description

A kind of Pesticidal combination that contains methylamino avermectin and organic phosphorus compound
Technical field
The present invention relates to a kind of Pesticidal combination, it contain the combination of methylamino avermectin and at least a organic phosphates Pesticidal compound as active component.
Background technology
Crops all need to use a large amount of agricultural chemicals for this reason and carry out the extermination of disease and insect pest to retrieve crop yield loss because damage by disease and insect causes crop yield loss to estimate every year.In recent years, for example the harm on paddy rice, fruit tree, vegetables, flowers and the diversified economy crop is more and more serious crops in insect pest, and because the agricultural chemicals abuse makes the insect resistance more and more serious to the generation of agricultural chemicals, causes pest controling effect to reduce year by year.The pesticide species that therefore, still just need have better pest controling effect.
Methylamino avermectin and salt thereof (emamectin) are a kind of known wide spectrum, the insecticidal/acaricidal agent of low toxicity, can prevent effectively eliminating aphis, various pests such as mite class, diamond-back moth, cabbage caterpillar, Americal rice leaf miner, beet flea beetle, colorado potato beetle, fruit tree leaf roller, oriental fruit moth and scale insect.
The organic phosphates Pesticidal compound is that a class can be widely used in and prevents and treats the various pests for example desinsection and/or the miticide of harmful insect and acarid.
Though as the Pesticidal combination of one of active component, seeing, existing at present many employing Avermectin or organic phosphates Pesticidal compound do not have methylamino avermectin and salt thereof and the two combination of organic phosphates Pesticidal compound Pesticidal combination report as active component.
The present inventor finds that surprisingly the combination of the two has synergistic effect, so finished the present invention.
Summary of the invention
The purpose of this invention is to provide a kind of Pesticidal combination that contains methylamino avermectin and at least a organic phosphates Pesticidal compound as active component, it has excellent synergy control efficiency.
Another object of the present invention provides the preparation method and the application of described Pesticidal combination.
Surprising is, the two the combination of methylamino avermectin and organic phosphates Pesticidal compound has synergistic effect.
The present composition contains the described active component combination of synergy effective dose, and ratio can be arbitrarily between active component, as long as can produce synergistic effect.Generally speaking, the weight ratio of described active component is a methylamino avermectin: organic phosphates Pesticidal compound=1: 0.1-100, preferably the weight ratio of the two is between 1: 1-50, particularly 1: in the scope of 5-40.
In the present invention, the organic phosphates Pesticidal compound for example is selected from following: chlopyrifos, chlorpyrifos-methyl, malathion, phoxim, Hostathion, fosmethilan, chlorophos, dichlorvos, Profenofos and quinalphos.Preferably, chlopyrifos, chlorpyrifos-methyl, malathion, dichlorvos, phoxim and Hostathion.More preferably, for example be selected from chlopyrifos, chlorpyrifos-methyl, dichlorvos, phoxim and Hostathion.Described compound is known, the preparation of these compounds and use can referring to, for example, external pesticide species handbook, new edition bound volume, the Ministry of Chemical Industry's agricultural chemicals central information facility, 1998.
In this article, methylamino avermectin is meant methylamino avermectin and its esters for example hydrochloride and benzoate.Described salt can be anhydrous, or its possible moisture crystal formation.Emamection benaoate preferably.Methylamino avermectin and salt thereof can referring to, for example, emamection benaoate preferably.The preparation of methylamino avermectin and salt thereof can referring to, for example, US 4,874,749, US 5,288,710, US 5,362,863, US 5,399,717, CN1129453, CN1283960, J.Org.Chem.59 (29), 7870-5 (1994).
The present invention's combination can convert conventional formulation such as missible oil, wetting powder, granula, soluble powder, water dispersible granules, suspending agent, aqueous emulsion, microemulsion, emulsion, pulvis, dust base, paste and water surface leafing agent to.
Administration form depends on specific use; In all cases, must guarantee that their dispersion is trickle as much as possible and even.
These preparations can prepare in a known manner, for example by with reactive compound solvent and/or carrier, if desired, adopt emulsifier and dispersant to fill, if use water as thinner, also can make cosolvent with other organic solvent.
The cosolvent that is suitable for this purpose mainly is:
-solvent such as aromatic compounds (for example dimethylbenzene), chloro aromatic compounds (for example chlorobenzene), paraffin (for example petroleum cuts), alcohols (for example methyl alcohol, butanols), ketone (for example cyclohexanone), amine (for example monoethanolamine, dimethyl formamide) and water;
-carrier is as the natural mineral matter (for example kaolin, alumina, talcum, chalk) that grinds and the synthetic mineral matter (for example silicic acid of high dispersive, silicate) of grinding;
-emulsifier such as nonionic and anion emulsifier (for example polyoxyethylene aliphatic alcohol ether, alkylsulfonate and arylsulphonate) and
-dispersant such as lignin sulfite waste liquor or methylcellulose.
The surface reactive material that is fit to is an aromatic sulfonic acid (lignosulphonic acid for example, phenolsulfonic acid, naphthalene sulfonic acids and dibutyl naphthalene sulfonic acids) and the alkali metal of fatty acid, alkaline earth metal and ammonium salt, alkylsulfonate and alkylaryl sulfonates, alkyl sulfate, lauryl ether sulfuric acid and aliphatic alcohol sulfate, and Sulfated 16-, 17-and the salt of octadecanol and fatty alcohol ether, sulfonated naphthalene and its derivative and formaldehyde condensation product, the condensation product of naphthalene or naphthalene sulfonic acids and phenol and formaldehyde, polyoxyethylene octylphenol ether, the iso-octyl of ethyoxyl alkanisation-, octyl group-or nonyl phenol, alkylphenol or tributyl phenyl polyglycol ether, alkyl aryl polyether alcohol, different three decyl alcohol, the fatty alcohol ethylene oxide condensate, ethoxylated castor oil, polyoxyethylene-or the polyoxypropylene alkyl ether, laruyl alcohol polyglycol ether acetic acid esters, sorbitan ester, lignin sulfite waste liquor or methylcellulose.
Moisture administration form can be by adding water, for example by missible oil, dispersion liquid, paste, wetting powder, effervescent agent or water dispersible granule preparation.When preparation emulsion, paste, oily dispersion liquid or liquid water surface leafing agent,, material is homogenized in water or be dissolved in oil or the solvent by adding wetting agent, adhesive, dispersant or emulsifier.And, also can prepare by active substance, wetting agent, adhesive, dispersant or emulsifier and possible solvent or the oily concentrate of forming, this concentrate is suitable for dilute with water.
Pulvis, spreading fertilizer over the fields pulvis, effervescent agent, solid-state water surface leafing agent composition can be by mixing active substance or grinding and produce with solid carrier.
Granule (for example, coating, dipping or homogeneous particle agent) can prepare by reactive compound is adhered on the solid carrier.
Solid carrier is that ore soil is as silica gel, silicic acid, silicate, talcum, kaolin, lime stone, lime, chalk, bole, loess, potter's clay, dolomite, diatomite, calcium sulphate and magnesium sulfate, magnesia, the synthetic material, the chemical fertilizer that grind are as ammonium sulfate, ammonium phosphate, ammonium nitrate, urea and plant product such as flour, bark powder, wood powder and shuck powder, cellulose powder and other solid carrier.Activity compound concentration in direct useful formulations can change in wide relatively scope.
Usually, composition contains 0.01 to 90% active component by weight, and usually according to the difference of preparation type, preferably contains 0.5 to 50% active component by weight.
Control is during animal pest, and preparation contains by weight 0.0001 to 10%, and preferred 0.01 to 1% reactive compound by weight is preferred.
Present composition application dosage, the difference according to factors such as different crops, time of application, weather conditions is generally 1-1000g a.i./ha, is preferably 5-300g a.i./ha.The general foliage applying that adopts, for example foliar spray is handled.Also can do other and handle as seed dressing, filling root etc., in this case, can adjust application dosage as required.For example when soil treatment control soil insect, application dosage is in the scope of 10-3000ga.i./ha.
Pesticidal combination of the present invention can be widely used in the insect on control vegetables (as tomato, capsicum, cucumber, Chinese cabbage, custard squash), potato, beet, paddy rice, cotton, tobacco and the fruit tree crops such as (as apple, cherry, citrus), is used to prevent and treat for example various pests such as aphid, leafhopper, plant hopper, thrips, aleyrodid, wireworm, beet flea beetle, colorado potato beetle, fruit tree leaf roller, oriental fruit moth, scale insect, diamond-back moth, cabbage caterpillar, Americal rice leaf miner, rice borer, tetranychid, full melon mite, goitre mite, tarsonemid.
Other purpose of the present invention and advantage are described further by following examples.
Embodiment
The present invention describes with the following example, but does not limit the present invention.
Example of formulations 1:15% missible oil
Raw material consumption (weight portion)
Emamection benaoate 0.7
Phoxim 14.3
Emulsifier 0201-B 12.0
Dimethylbenzene 73.0
Take by weighing active component and be dissolved in the solvent xylene, and then add emulsifier, stir, promptly make described 15% missible oil.
Example of formulations 2:21.0% missible oil
Raw material consumption (weight portion)
Emamection benaoate 1.0
Chlopyrifos 20.0
Emulsifier 0,202 12.0
Dimethylbenzene 67.0
Take by weighing active component and be dissolved in the solvent xylene, and then add emulsifier, stir, promptly make described 21% missible oil.
Example of formulations 3:15% missible oil
Raw material consumption (weight portion)
Methylamino avermectin 0.6
Malathion 14.4
Emulsifier 0,204 10.0
Dimethylbenzene 75.0
Take by weighing active component and be dissolved in the solvent xylene, and then add emulsifier, stir, promptly make described 15% missible oil.
Example of formulations 4:16% missible oil
Raw material consumption (weight portion)
Emamection benaoate 1.0
Hostathion 15.0
Emulsifier 0,208 12.0
Dimethylbenzene 72.0
Take by weighing active component and be dissolved in the solvent xylene, and then add emulsifier, stir, promptly make described 16% missible oil.
Example of formulations 5:15% wetting powder
Raw material consumption (weight portion)
Emamection benaoate 0.5
Quinalphos 14.5
Sodium lignin sulfonate 6.0
JFCS 4.0
Precipitated calcium carbonate 75.0
With precipitated calcium carbonate precomminution, then it is fully mixed with above-mentioned other composition earlier, adopt comminution by gas stream processing again, make described 15% wetting powder.
Example of formulations 6:20% wetting powder
Raw material consumption (weight portion)
Methylamino avermectin hydrochloride 1.0
Malathion 19.0
JFC 2.0
Sodium lignosulfonate 10.0
Precipitated calcium carbonate 78.0
With precipitated calcium carbonate precomminution, then it is fully mixed with above-mentioned other composition earlier, adopt comminution by gas stream processing again, make described 20% wetting powder.
Example of formulations 7:15% wetting powder
Raw material consumption (weight portion)
Emamection benaoate 0.5
Chlorpyrifos-methyl 14.5
Neopelex 2.0
Sodium lignosulfonate 8.0
Diatomite 35.0
Precipitated calcium carbonate 40.0
With diatomite and precipitated calcium carbonate precomminution, then it is fully mixed with above-mentioned other composition earlier, adopt comminution by gas stream processing again, make described 15% wetting powder.
Example of formulations 8:20% wetting powder
Raw material consumption (weight portion)
Emamection benaoate 1.0
Chlorophos 19.0
Neopelex 2.5
Sodium lignosulfonate 7.5
White carbon 10.0
Precipitated calcium carbonate 60.0
With precipitated calcium carbonate precomminution, then it is fully mixed with above-mentioned other composition earlier, adopt comminution by gas stream processing again, make described 20% wetting powder.
Example of formulations 9:18% microemulsion
Raw material consumption (weight portion)
Emamection benaoate 0.8
Chlopyrifos 17.2
Farming breast 0,203 10.0
Dimethylbenzene 20.0
Sorbierite 8.0
Water 44.0
Earlier active component is dissolved in the solvent xylene, and adds sorbierite, in the heated and stirred process, add emulsifier and add deionized water then, stir, promptly make described 18% microemulsion.
Example of formulations 10:15% microemulsion
Raw material consumption (weight portion)
Methylamino avermectin hydrochloride 0.9
Hostathion 14.1
Farming breast 0,207 10.0
Dimethylbenzene 20.0
Ethylene glycol 8.0
Water 47.0
Earlier active component is dissolved in the solvent xylene, and adds cosolvent ethylene glycol, in the heated and stirred process, add emulsifier and add deionized water then, stir, promptly make described 15% microemulsion.
Example of formulations 13:15% effervescent agent
Raw material consumption (weight portion)
Emamection benaoate 0.7
Phoxim 14.3
Sodium bicarbonate 20.0
Citric acid 25.0
Precipitated calcium carbonate 34.0
Talcum powder 6.0
Each drying materials is levigate, mix then, make it to decompose evenly, promptly make described 15% effervescent agent.
Example of formulations 14:15% effervescent agent
Raw material consumption (weight portion)
Methylamino avermectin hydrochloride 0.5
Chlorophos 14.5
Sodium bicarbonate 20.0
Oxalic acid 23.0
Precipitated calcium carbonate 38.0
Talcum powder 4.0
Each drying materials is levigate, mix then, make it to decompose evenly, promptly make described 15% effervescent agent.
Biological Examples 1 diamond-back moth control synergy test
(1) combination of methylamino avermectin and chlopyrifos is to the synergy test of diamond-back moth
At outdoor plantation wild cabbage, connect diamond-back moth worm pupa mid-term in the wild cabbage growth, after breeding for 2 generations continuously, contain the phase of sending out at the 3-4 instar larvae, larva is adopted back indoor, get healthy and strong 4 the initial stage in age larva contain in the foster worm bottle that has gone to the end (6 centimetres of diameters, high 10 lis are come) respectively, bottle up and down two ends is tightened with 50 order nylon wires respectively, every bottle of Sheng larva about 25 standby.
Every kind of medicament is established 6 kinds of concentration gradients, and every kind of concentration is established 4 repetitions, about 25 4 instar larvaes of every reprocessing.Worm is immersed respectively in the soup of respective concentration together with foster worm bottle, taken out after 8 seconds, inhale with blotting paper and remove unnecessary soup, worm is transferred to raised in the bottle (9 centimetres of diameters, high 10 centimetres) again.Place a filter paper in advance in the bottle, put into the fresh pickles leaf of 3-4 agreement that contracts a film or TV play to an actor or actress 8 centimeter length, bottleneck is tightened with 60 order gauzes in case its escape is raised under the room temperature of insectary, places one little absorbent cotton in the bottle and drips supernatant water and preserve moisture.Handle and checked each survival borer population and dead borer population of handling of record in back 48 hours.Death standard: with its overturning, the scrambler that can not normally reset is death with insect needle.Contrast is handled with clear water, establishes 4 repetitions, and method is the same.
Set up the associated straight lines regression equation of drug concentration logarithm value and dead probit value by statistical method, try to achieve the lethal concentration of 50 (LC 50), with each combination of mensuration and the LC of two kinds of single agent 50Value is that standard meter is calculated actual toxicity index with the chlopyrifos, calculates the co-toxicity coefficient of each combination at last by following formula.The result is as shown in table 1.
Co-toxicity coefficient=actual toxicity index/theoretical toxicity index * 100.
Table 1 methylamino avermectin and chlopyrifos combination are to the synergistic effect of diamond-back moth
Chemicals treatment Virulence regression equation LC 50 (ppm) Correlation coefficient Actual toxicity index Theoretical toxicity index Co-toxicity coefficient
Chlopyrifos (B) Y＝2.471+2.421X 1222.9 0.998 100 - -
Emamection benaoate (A) Y＝4.322+4.392X 132.6 0.995 922.3 - -
A+B(1∶15) Y＝3.588+0.501X 657.7 0.996 186.0 151.39 122.82
A+B(1∶20) Y＝0.756+1.516X 630.7 0.996 193.9 139.2 139.34
A+B(1∶25) Y＝2.408+0.880X 882.0 0.963 138.7 131.63 105.33
By last table 1 as seen, described the present invention's combination has significant synergistic insecticidal action.
(2) combination of methylamino avermectin and phoxim is to the synergy test of diamond-back moth
At outdoor plantation wild cabbage, connect diamond-back moth worm pupa mid-term in the wild cabbage growth, after breeding for 2 generations continuously, contain the phase of sending out at the 3-4 instar larvae, larva is adopted back indoor, get healthy and strong 4 the initial stage in age larva contain in the foster worm bottle that has gone to the end (6 centimetres of diameters, high 10 centimetres) respectively, bottle up and down two ends is tightened with 50 order nylon wires respectively, every bottle of Sheng larva about 25 standby.
Every kind of medicament is established 6 kinds of concentration gradients, and every kind of concentration is established 4 repetitions, about 25 4 instar larvaes of every reprocessing.Worm is immersed respectively in the soup of respective concentration together with foster worm bottle, taken out after 8 seconds, inhale with blotting paper and remove unnecessary soup, worm is transferred to raised in the bottle (9 centimetres of diameters, high 10 centimetres) again.Place a filter paper in advance in the bottle, put into the fresh pickles leaf of 3-4 agreement that contracts a film or TV play to an actor or actress 8 centimeter length, bottleneck is tightened with 60 order gauzes in case its escape is raised under the room temperature of insectary, places one little absorbent cotton in the bottle and drips supernatant water and preserve moisture.Handle and checked each survival borer population and dead borer population of handling of record in back 48 hours.Death standard: with its overturning, the scrambler that can not normally reset is death with insect needle.Contrast is handled with clear water, establishes 4 repetitions, and method is the same.
Set up the associated straight lines regression equation of drug concentration logarithm value and dead probit value by statistical method, try to achieve the lethal concentration of 50 (LC 50), with each combination of mensuration and the LC of two kinds of single agent 50Value is that standard meter is calculated actual toxicity index with the phoxim, calculates the co-toxicity coefficient of each combination at last by following formula.The result is as shown in table 2.
Co-toxicity coefficient=actual toxicity index/theoretical toxicity index * 100.
Table 2 methylamino avermectin and phoxim combination are to the synergistic effect of diamond-back moth
Chemicals treatment Virulence regression equation Correlation coefficient LC50 (ppm) Actual toxicity index Theoretical toxicity index Co-toxicity coefficient
Phoxim (B) Y＝-2.1950+2.3900X 0.9914 1024.37 100
Emamection benaoate (A) Y＝0.9042+1.9348X 0.9927 130.90 782.56
A+B(1∶10) Y＝2.0407+1.3388X 0.9890 162.34 631 162.05 389.39
A+B(1∶20) Y＝1.7452+1.4751X 0.9841 160.95 636.45 132.50 480.34
A+B(1∶30) Y＝-0.0826+2.0237X 0.9893 324.74 315.44 122.02 258.51
By last table 2 as seen, described the present invention's combination has significant synergistic insecticidal action.
(3) combination of methylamino avermectin and dichlorvos is to the synergy test of diamond-back moth
Earlier with dichlorvos, emamection benaoate dissolves with proper amount of acetone, water claims to release respectively again, be made into the mother liquor of 1000ppm, then with dichlorvos. the proportioning combination that provides in the emamection benaoate following table 3 is made into the soup that activity component concentration is 1000ppm, and water claims to release to 6 series concentration successively respectively, and cabbage leaves immerses soup to be measured, treat that blade soaks the back taking-up fully and dries, placing diameter is the 9cm culture dish, preserve moisture with wet cotton, each culture dish is pressed 20 of 2-3 diamondback moth larvaes in age, and every concentration repeats 3 times, establishes the clear water contrast, check after 72 hours and respectively repeat extremely, borer population alive, obtain corrected mortality, set up the associated straight lines regression equation of drug concentration logarithm value and dead probit value, try to achieve the lethal concentration of 50 (LC by statistical method 50), with each combination of mensuration and the LC of two kinds of single agent 50Value is that standard meter is calculated actual toxicity index with dichlorvos, calculates the co-toxicity coefficient of each combination at last by following formula.The result is as shown in table 3.
Co-toxicity coefficient=actual toxicity index/theoretical toxicity index * 100.
Table 3 methylamino avermectin and dichlorvos combination are to the synergistic effect of diamond-back moth
Chemicals treatment Virulence regression equation Correlation coefficient LC 50 (ppm) Actual toxicity index Theoretical toxicity index Co-toxicity coefficient
Dichlorvos (B) Y＝-2.7188+0.9085X 0.9067 17.81 100
Emamection benaoate (A) Y＝3.285+0.820X 0.9862 1.99 894.97
A+B(1∶15) Y＝2.9459+2.7580X 0.9964 5.56 320.32 149.69 213.99
A+B(1∶30) Y＝4.7811+0.5265X 0.9912 2.61 682.38 125.64 543.12
A+B(1∶40) Y＝0.8176+4.6032X 0.9943 8.10 219.88 119.39 184.17
By last table 3 as seen, described the present invention's combination has significant synergistic insecticidal action.
Biological Examples 2 Americal rice leaf miner adults control synergy test
Adopt the residual method of Mason (1987a) (medicine embrane method).Measure and divided for three steps carried out: (1) inhales 1ml with various agricultural chemicals acetone solutions to be measured, and in the 50ml wide-mouth bottle, the rotation glass-tube is uniformly distributed on the glass tube soup, till the soup volatilization.5 concentration of each medicament, 2 repetitions of each concentration will make in 25 ℃ of draft chambers of wide-mouth bottle horizontal positioned of medicine film, and it is stand-by to blow half an hour with electric fan.(2) add the 5ml ether in the beaker of 50ml, the beaker that will fill the liriomyza bryoniae adult then docks with it, after liriomyza bryoniae is all knocked down, removes ether immediately.(3) with small size writing brush the liriomyza bryoniae adult is contained in respectively in the wide-mouth bottle that makes the medicine film, and in bottle, hangs the cotton-wool of the moistening mistake of a usefulness 10% sucrose liquid, bottleneck is sealed with gauze and rubber band.After putting into the draft chamber and treating the adult full recovery, move in the illumination box (25 ℃, photoperiod L: D=14: 10, humidity 70 ± 10%).Check death toll in 72 hours, carry out data with the FX-3600p calculator and return, obtain regression equation.Combination preparation calculates co-toxicity coefficient with the abundant method of Sun Yun.The results are shown in Table 4.
The LC of single agent toxicity index (TI)=standard insecticide 50/ for the LC that surveys insecticide 50* 100
The LC of the single usefulness of the actual measurement toxicity index (ATI) of combination (A+B)=A agent 50/ (A+B) LC 50* 100
The theoretical toxicity index (ATI) * 100 of actual measurement toxicity index (the ATI)/combination of theoretical toxicity index (the TTI)=combination of combination
CTC＞100 synergistic effects
The CTC=100 summation action
CTC＜100 antagonisms
Table 4 methylamino avermectin and Hostathion are to the synergy test (medicine embrane method) of Americal rice leaf miner adult
Chemicals treatment Virulence regression equation Lethal concentration of 50 LC 50(μg/ml) Correlation coefficient Co-toxicity coefficient
Emamection benaoate (A) Y＝4.96+1.52X 1.06 0.990 -
Hostathion (B) Y＝3.78+2.16X 3.67 0.987 -
A+B(1∶10) Y＝4.98+1.23X 1.04. 0.978 288
A+B(1∶15) Y＝5.12+1.44X 0.82 0.991 388
A+B(1∶20) Y＝4.50+1.30X 2.42 0.920 136
By table 4 as seen, described the present invention's combination has significant synergies.
Bioexperiment example 3 Americal rice leaf miner larvas control synergy test
The Kidney bean seedling flowerpot that growth is consistent is put into illumination box (26 ± 1 ℃ of temperature, 70 ± 1 ℃ of humidity, photoperiod L: D=14: 10), about 300 liriomyza bryoniae adults are put into wherein, catch up with the adult on the most seedling after 24 hours, flowerpot is moved on in the illumination box of another the same terms, when larvae development during to 3 ages (5-6) day to seedling on the larva counting, begin to test.
The blade method is soaked in employing.The Kidney bean seedling of every dish having been counted the larva number takes out soak 5 seconds in the aqueous solution of test medication after, treat that soup is done after, put the plastics freshness protection package of two open ends, bandage at the seedling base portion, be used to collect pupa.6 concentration are established in test, and each concentration 1 basin (3 strain) repeats 2 times.Place illumination box to raise these processing, wait the control group larva all to pupate and the back 2-3 days statistics death toll (lethality=larva sum-sprout wings into borer population) of sprouting wings, the number of pupating calculates lethality.The computational methods of co-toxicity coefficient are with biological Examples 2.The results are shown in Table 5.
By table 5 as seen, described the present invention's combination has significant synergies.
Table 5 methylamino avermectin and Hostathion are to the synergy test (leaf dipping method 5 strains) of Americal rice leaf miner larva
Chemicals treatment Virulence regression equation Lethal concentration of 50 LC 50(μg/ml) Correlation coefficient Co-toxicity coefficient
Emamection benaoate (A) Y＝4.46+1.66X 2.10 0.998 -
Hostathion (B) Y＝2.48+1.68X 32.5 0.985 -
A+B(1∶10) Y＝4.49+1.18X 2.72 0.995 516
A+B(1∶15) Y＝4.75+0.70X 2.30 0.998 742
A+B(1∶20) Y＝4.40+1.02X 3.87 0.997 497
Biological Examples 4 Americal rice leaf miner daejeon prevention tests
During test, Beijing beans are handled and are yielded positive results the initial stage, and Americal rice leaf miner is a 1-2 instar larvae occurrence in peak period.The cultivation management term harmonization of each experimental plot.Test 6 processing, repeat 4 times, amount to 24 sub-districts.18 square metres of every sub-district areas.Boundary belt is established in each experimental plot completely random arrangement between the sub-district.Respectively at respectively investigating the worm amount before the dispenser and behind the medicine in 1 day, 3 days, 5 days and 9 days one time.Every sub-district is got 5 strain Beijing beans at random, every strain 5 leaves, and the worm alive on 25 leaves of fixed point investigation is measured altogether, and the survival of larva is judged according to gallery position and polypide color with dead.The poisoning of duration of test observed and recorded and other influence.The results are shown in Table 6.
The drug effect computational methods:
A. control efficiency (%)=[1-(CK 0Worm amount * pt 1The worm amount)/(CK worm amount * pt 0The worm amount)] * 100
B. " DMRT " method is adopted in significance of difference analysis.
In the formula: CK 0-Pt before the medicine of check plot 0-Before the treatment region medicine
CK 1-Pt behind the medicine of check plot 1-Behind the treatment region medicine
The field control effectiveness test of table 6 methylamino avermectin and Hostathion control Americal rice leaf miner larva
Handle (ml/ mu) Insect population radix (head) before the medicine Behind the medicine 1 day Behind the medicine 3 days Behind the medicine 5 days Behind the medicine 9 days
Borer population (head) alive Preventive effect (%) Borer population (head) alive Preventive effect (%) Borer population (head) alive Preventive effect (%) Borer population (head) alive Preventive effect (%)
16% missible oil of the present invention 100 24.25 7 70.12a 5.25 73.21a 3 88.01aA 6.67 83.65aA
80 18.5 7.75 53.52ab 6 57.33bc 4.25 75.34cC 5.25 74.39bAB
60 19.25 9.5 45.52ab 6 55.66c 5 72.39dc 5.5 74.29bAB
1% first dimension salt missible oil 30 20.5 6.75 64.30ab 4.75 70.17ab 3.25 83.15bB 4.75 78.96abA
20% triazophos emulsifiable solution 125 23 12 46.34b 9 52.16bc 7.5 67eD 8.75 65.30cB
The clear water contrast 17.25 15.75 13.25 16.25 18.75
Annotate: 16% missible oil of the present invention is meant the product of example of formulations 4.
First dimension salt is meant emamection benaoate.
As seen from the above table, described the present invention's combination has significant synergistic insecticidal action.
Though above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, not departing from the these modifications or improvements basically of spirit of the present invention, all belong to the scope of protection of present invention.

Claims (4)

1. a Pesticidal combination is characterized in that, it comprises a) methylamino avermectin and b) chlopyrifos or phoxim be as active component, component a) and components b) weight ratio be 1: 20-40.
2. according to the Pesticidal combination of claim 1, wherein, methylamino avermectin is selected from methylamino avermectin, methylamino avermectin hydrochloride and emamection benaoate.
3. according to the Pesticidal combination of claim 1 or 2, wherein, described Pesticidal combination is missible oil, wetting powder, granula, soluble powder, water dispersible granules, suspending agent, aqueous emulsion, microemulsion, emulsion, pulvis, dust base, effervescent agent, paste and water surface leafing agent formulation.
4. according to the Pesticidal combination of claim 3, wherein, described Pesticidal combination is missible oil, wetting powder, granula, soluble powder, water dispersible granules, suspending agent, aqueous emulsion, microemulsion and water surface leafing agent.
CN 03105327 2003-02-24 2003-02-24 Insecticidal composition containing methylamino abamectin and organophosphorus compound Expired - Fee Related CN1209020C (en)

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CN102835420A (en) * 2012-09-28 2012-12-26 南京农业大学 Insecticidal composition for controlling rice leaf rollers
CN104304331B (en) * 2014-11-19 2016-06-22 蔡桂玲 A kind of for insecticides killing planthopper and preparation method thereof
CN105284879A (en) * 2015-11-26 2016-02-03 济南舜昊生物科技有限公司 Insecticide composition containing etrimfos and ethyl-p-nitrophenyl phenylphosphonothioate and application
CN106942247A (en) * 2017-04-21 2017-07-14 扬州大学 Emamectin-benzoate effervescent tablet and preparation method thereof

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