CN102047915B - Insecticidal composition containing thiacloprid amide - Google Patents

Insecticidal composition containing thiacloprid amide Download PDF

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CN102047915B
CN102047915B CN201110004308XA CN201110004308A CN102047915B CN 102047915 B CN102047915 B CN 102047915B CN 201110004308X A CN201110004308X A CN 201110004308XA CN 201110004308 A CN201110004308 A CN 201110004308A CN 102047915 B CN102047915 B CN 102047915B
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amide
bacillus thuringiensis
pleocidin
insecticidal composition
insect amide
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CN102047915A (en
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葛尧伦
任玉英
梅春晓
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Hailir Pesticides and Chemicals Group Co Ltd
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Hailir Pesticides and Chemicals Group Co Ltd
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Abstract

The invention relates to an insecticidal composition in the field of compound pesticides. The effective components of the insecticidal composition are a combination of thiacloprid amide and spinosad and a combination of thiacloprid amide and Bacillus thuringiensis, respectively, wherein the ratio of the weight percentage of thiacloprid amide to the weight percentage of spinosad is (1 to 80):(80 to 1), preferably (1 to 40):(40 to 1); and the ratio of the weight percentage of thiacloprid amide to the weight percentage of Bacillus thuringiensis is (1 to 70):(70 to 0.1), preferably (5 to 40):(40 to 1). The insecticidal composition can be processed in the form of an emulsifiable concentrate, a suspension, a microcapsule suspension, a wettable powder and a water dispersible granule, by the known methods in the prior art. The insecticidal composition is significant in synergistic effect of controlling diamondback moth, beet armyworm, cotton bollworm, common cutworm, stem borer and other Lepidoptera pests.

Description

A kind of Pesticidal combination that contains the thiophene insect amide
Technical field
The present invention relates to the agriculture chemical compounding technical field, be specifically related to a kind of contain the thiophene insect amide have a synergistic effect Pesticidal combination, its active ingredient is one or two yuan of any in thiophene insect amide and pleocidin or bacillus thuringiensis,Bt compounded combination.
Background technology
The thiophene insect amide is a kind of Novel ortho heterocycle benzamide compound.Have very strong permeability, medicament can enter into xylem by stem's epidermal cell.According to test, this medicament has fabulous preventive effect for lepidoptera pest, and is long for the insect pest control time.Have simultaneously higher selectivity, for the beneficial organism low toxicity, environmentally safe.
It is a kind of macrolides Nuisanceless high-efficient biological insecticides that extract in thorn sugared many born of the same parents bacterium (Saccharopolyspora spinosa) zymotic fluid that pleocidin, pleocidin have another name called multiple killing teichomycin (Spinosad).The mode of action of pleocidin is novel, can sustained activation target insect acetylcholine nicotine receptor, but its binding site is different from nicotine and Imidacloprid.Can make insect benumb rapidly, paralyse, cause at last death.Its desinsection speed can compare favourably with chemical pesticide.Safe, and with present common insecticide be the biological insecticides of low toxicity, efficient, low-residual without cross resistance, existing efficient insecticidal properties has again the characteristic of beneficial insect and mammalian safe is arranged, the most suitable pollution-free vegetable, Production of fruit are used.It is the insecticide of a kind of low toxicity, efficient, wide spectrum.
Bacillus thuringiensis,Bt, bacillus thuringiensis,Bt claim again thuringiensis, English name: Bacillus thuringiensis (B.t.).Biotrol BTV is a kind of microorganism formulation that utilizes the bacillus thuringiensis,Bt bacterium for killing insect to produce through fermented and cultured.Bacillus thuringiensis,Bt form with a kind of biological bacterium under nature survives in soil and the water.This bacterium for killing insect produces the brood cell and forms a kind of archon in growth and development process, examine under a microscope, and normally irregular diamond crystal is called parasporal crystal.After insect had been nibbled parasporal crystal and gemma, in the alkaline environment, the parasporal crystal dissolving discharged the toxin that lepidopterous larvae is had stronger toxic action in the intestines of insect.This toxin makes the middle enteroparalysis of larva, presents poisoning symptom, and anorexia is malfunctioning to the contact irritant reaction, apocleisis, and vomiting, diarrhoea, action is moved back slow, and the death of insect has been accelerated in health atrophy or curling.Use separately thiophene insect amide or pleocidin or bacillus thuringiensis,Bt, exist cost compare large, quick-acting or lasting effect are poor, and single dose is used shortcomings such as easily producing resistance.Good in order to develop quick-acting and lasting effect, lower-cost agricultural chemicals, we filter out and carry out compositely one of arbitrarily in thiophene insect amide and pleocidin or the bacillus thuringiensis,Bt on the basis of lab screening and field trial, have obvious synergistic effect.And about composite Pesticidal combination one of any in thiophene insect amide and pleocidin or the bacillus thuringiensis,Bt and use and there is no at present the people and reported.
Summary of the invention
Based on above situation, the object of the present invention is to provide a kind of agricultural insecticide composition, this Pesticidal combination it is characterized in that take (A) thiophene insect amide and (B) pleocidin and (C) bacillus thuringiensis,Bt be mixed as active ingredient, the control of the lepidoptera pests such as diamond-back moth, prodenia litura, cotton bollworm, beet armyworm, striped rice borer has good synergistic effect.
Pesticidal combination of the present invention is characterized in that the mass percent example of effective constituents A and B is 1~80: 80~1.
Pesticidal combination of the present invention is characterized in that the mass percent example of effective constituents A and C is 1~70: 70~0.1.
Pesticidal combination of the present invention is characterized in that through the toxicity test experiment, the mass percent example of effective constituents A and B is preferably 1~40: 40~1.
Pesticidal combination of the present invention is characterized in that through the toxicity test experiment, the mass percent example of effective constituents A and C is preferably 5~40: 40~1.
The formulation that described Pesticidal combination of the present invention can be prepared according to the known method of those skilled in the art of the present technique is missible oil, suspending agent, micro-capsule suspension, wetting powder, water dispersible granules.
Described thiophene insect amide and the pleocidin gross mass content in preparation is 1%-90%, preferred 10%-50%.
Described thiophene insect amide and the bacillus thuringiensis,Bt gross mass content in preparation is 1%-90%, preferred 10%-50%.
The formulation specific embodiments is as follows:
One of technical scheme of the present invention, described Pesticidal combination are cream preparation, and the mass percent of component is:
Effective constituents A 1~80%
Active ingredient B or C 0.1~70%
Conventional emulsifier 10~30%
Conventional solvent 20~50%
Conventional synergist 1~5%
The concrete production stage of this cream preparation adds the stir oily liquids of rear one-tenth transparent and homogeneous of emulsifier, synergist after the fully dissolving again for first effective constituents A, B or C being added in the solvent, and can namely can be made into the cream preparation of the present composition.
Two of technical scheme of the present invention, described Pesticidal combination are suspending agent, and the percentage by weight of component is:
Effective constituents A 1~80%
Active ingredient B or C 0.1~70%
Dispersant 5~20%
Antifreezing agent 1~5%
Thickener 0.1~2%
Defoamer 0.1~0.8%
Penetrating agent 0~10%
PH value conditioning agent 0.1~5%
Water surplus
The concrete production stage of this suspending agent mixes through high speed shear for first other auxiliary agents being mixed, and adds effective constituents A, B or C, and abrading-ball is 2~3 hours in ball crusher, makes a diameter all below 5mm, namely can be made into the suspending agent preparation of the present composition.
Three of technical scheme of the present invention, described Pesticidal combination is micro-capsule suspension, the percentage by weight of component is:
Effective constituents A 1~80%
Active ingredient B or C 0.1~70%
Urea 5~20%
Formaldehyde 10~30%
Emulsifying dispersant 5~20%
Antifreezing agent 1~5%
Thickener 0.1~2%
Defoamer 0.1~0.8%
Water surplus
In being housed, the there-necked flask of agitating device adds urea and formaldehyde (molar ratio be about 1: 1.5~2.0), with the pH value to 8 of sodium hydroxide solution regulator solution~about 9, then be warming up to 70~80 ℃, reaction obtains stable pollopas performed polymer.Get the former drug solns of a certain amount of effective constituents A Bifenazate and active ingredient B in cyclohexane, and add emulsifying dispersant in solution, follow vigorous stirring, the aqueous solution that is made into to contain emulsifying dispersant is the O/W type stable emulsion of water.Above-mentioned pollopas performed polymer is added in the emulsion, regulate the pH value, polymerization reaction take place under the acid catalysis condition is wrapped oil phase substance, forms microcapsule granule.Slowly heat up, solidify, temperature is controlled at 40~50 ℃, hardening time 1h.Select to add an amount of auxiliary agent, can obtain stable micro-capsule suspension.
Four of technical scheme of the present invention, described Pesticidal combination is wetting powder, the percentage by weight of component is:
Effective constituents A 1~80%
Active ingredient B 0.1~50%
Dispersant 3~10%
Wetting agent 1~5%
The filler surplus.
The concrete production stage of this wetting powder is: by above-mentioned prescription effective constituents A, B and dispersant, wetting agent and filler are mixed, uniform stirring in stirred tank, behind airslide disintegrating mill, mixing, namely can be made into the wetting powder of the present composition.
Five of technical scheme of the present invention, described Pesticidal combination are water dispersible granules, and the percentage by weight of component is:
Effective constituents A 1~80%,
Active ingredient B 0.1~50%
Dispersant 3~10%
Wetting agent 1~10%
Disintegrant 1~5%
The filler surplus
The concrete production stage of this water dispersible granules is: by above-mentioned prescription effective constituents A, B and dispersant, wetting agent, disintegrant and filler are mixed, pulverize with micro jet, through mediating, then add and carry out granulation, drying, screening in the fluidized bed prilling dryer by sample analysis, namely can be made into the water dispersible granules of the present composition.
Emulsifier is alkylbenzene naphthalene sulfonate, alkylphenol polyoxyethylene phosphate, diphenyl phenol polyethenoxy polyethenoxy ether, styrenated phenol APEO, alkylphenol polyoxyethylene formaldehyde condensation products, diphenyl phenol polyethenoxy polyformaldehyde condensation product, castor oil ethylene oxide adduct and derivative thereof, such as farming breast 300, farming breast 500, farming breast 600, Nongru-700, agricultural newborn SorplKS, OX2511, NNO, NP series etc., emulsifier can be the mixture of one or more
Dispersant has one or several the mixture in lignosulfonates, fatty acid amide N methyl taurine sodium salt, alkylphenol polyoxyethylene sulphate, lignosulfite, fatty acid ester sulphate, polyoxyethylene polyoxypropylene block copolymer, alkylphenol polyoxyethylene, the fatty alcohol-polyoxyethylene ether.
Wetting agent is one or several the mixture in fatty acid amide N methyl taurine sodium salt, lignosulfonates, alkylphenol polyoxyethylene sulphate, petroleum sodium sulfonate, alkylnaphthalene sulfonate, fatty acid ester sulphate, alkylphenol polyoxyethylene, fatty alcohol-polyoxyethylene ether, lignosulfite, the withered powder of tea, the spaonin powder.
Thickener is one or more the mixture in CMC, polyvinyl alcohol, xanthans, gum Arabic, sodium alginate, polyvinylpyrrolidone, bentonite, aluminium-magnesium silicate, the gypsum.
Penetrating agent is one or both the mixture among Laurocapram, the JFC.
Defoamer can be one or more the mixture in organic silicone oil, methyl alcohol, ethanol, the epoxidized soybean oil.
Antifreezing agent is one or more the mixture in ethylene glycol, propane diols, glycerine, polyethylene glycol, the sorbierite.
PH value conditioning agent is one or more the mixture in sodium hydroxide, potassium hydroxide, ammoniacal liquor, hydrochloric acid, acetic acid, phosphoric acid or the citric acid.
Solvent and cosolvent have one or more the mixture in water, methyl alcohol, ethanol, butanols, ethylene glycol, propane diols, glycerine, polyethylene glycol, acetone, cyclohexanone, pyrrolidones, toluene, dimethylbenzene, ethyl acetate, dimethyl formamide (DMF), the dimethyl sulfoxide (DMSO) (DMSO).
Disintegrant can be one or more the mixture in urea, magnesium chloride, aluminium chloride, sodium chloride, ammonium sulfate, the bentonite.
Carrier is one or more the mixture in kaolin, diatomite, atlapulgite, White Carbon black, clay, precipitated calcium carbonate, talcum powder, the montmorillonite.
Pesticidal combination of the present invention has obvious synergistic effect, can reduce effective ingredient consumption, delays the generation of pest resistance to insecticide, and can be used for the improvement of resistant insect.Be particularly suitable for for lepidoptera pests such as the diamond-back moth that prevents and treats vegetables, prodenia litura, cotton bollworm, beet armyworm, striped rice borer.This invention can significantly remedy pleocidin and bacillus thuringiensis,Bt in the deficiency of quick-acting fermentation, accomplishes that quick-acting and lasting effect take into account.
Embodiment:
In order to make purpose of the present invention, technical scheme and advantage clearer, the present invention describes with following specific embodiment, but the present invention only limits to absolutely not these examples.The method that the present invention adopts indoor bioassay and field trial to combine.If no special instructions, the ratio of below mentioning (comprising percentage) all is mass ratio.
The different proportioning co-toxicities from pleocidin or bacillus thuringiensis,Bt of thiophene insect amide
(1) reagent agent
The former medicine of 96% thiophene insect amide, the former medicine of 98.3% pleocidin, 89% Bacillus thuringiensis, above-mentioned former medicine provides by Qingdao Hailir Pesticides and Chemical Co., Ltd..
(2) for examination worm source
Thiophene insect amide+pleocidin is for examination worm source: indoor Turnip Sprouts are raised the third-instar larvae of the diamond-back moth in 10 generations continuously, temperature (25 ± 2) ℃, relative moisture 50% ± 4%, periodicity of illumination 14/10h (L/D).
Thiophene insect amide+bacillus thuringiensis,Bt is for examination worm source: the indoor beet armyworm of for many generations raising, indoor conditions: temperature (26 ± 2) ℃.Relative moisture 70% ± 5%, periodicity of illumination 16/8h (L/D).
(3) single dose assay method
Adopt dip method respectively two groups of former medicines all to be used a small amount of acetone solution, be diluted to into again 5 dense solution of equal difference with 0.1% Tween solution, be diluted in the beaker with for subsequent use, and with clear water in contrast.
Thiophene insect amide+pleocidin: with of the same size three age diamondback moth larvae in the liquid that soaks the worm cage, flood 5S, be placed in the culture dish that diameter is 9cm after sucking unnecessary liquid, be placed with fresh cabbage leaves in the ware and add a cover.Every concentration is processed 10, repeats 4 times.If blank.Keep in (27 ± 1) o C illumination box checking lethality behind the 24h that it is dead touching the polypide nonresponder with pulling needle.Lethality Abbott formula correction, again according to the concentration logarithm---the lethality probit value is analyzed (Bliss) method, obtains virulence regression equation and puts dead middle amount LC 50Value.
Thiophene insect amide+bacillus thuringiensis,Bt: sweep lightly with the beet exigua larvae at writing brush 3 initial stages in age that physiological status is consistent and to soak in the worm device, to soak the worm device soaks into the liquid, shake gently, take out behind the 5s, wash dried polypide with blotting paper rapidly and reach unnecessary peripherally liquid.It is 26 ℃ that larva after the processing places temperature, and relative moisture is in 70% the intelligent insectary.Every concentration repeats 3 times, and 20 larvas of every repetition are established blank simultaneously, and is doomed dead respectively at 48h inspection behind the medicine, calculates lethality, corrected mortality, obtains virulence regression equation and calculate LC 50The control group lethality is being efficiency test below 10%.
(4) the joint toxicity measuring method of different proportionings
According to the toxicity test result of single dose, be 15% quality than pleocidin by active ingredient: the thiophene insect amide was respectively 1.5: 13.5,1.3: 13.7,1.1: 13.9,0.9: 14.1,0.7: 14.3;
According to preliminary experiment both total active ingredient 15% is set, set ratio is that m (bacillus thuringiensis,Bt): m (thiophene insect amide) was respectively 5: 10,6: 9, and 7: 8,8: 7,9: 6.
Adopt above-mentioned 1.3 methods to carry out toxicity test, calculate LC 50, and press the abundant method of Sun Yun and calculate co-toxicity coefficient (CTC).Co-toxicity coefficient CTC, computing formula is as follows: (take the thiophene insect amide as the standard medicament, its toxicity index is 100):
The LC of the toxicity index of pleocidin or bacillus thuringiensis,Bt (TI)=thiophene insect amide 50The LC of/pleocidin or bacillus thuringiensis,Bt 50* 100
The LC of the actual toxicity index (ATI) of M=thiophene insect amide 50The LC of/M 50* 100
The TI of the TI of the theoretical toxicity index (TTI) of M=thiophene insect amide * P thiophene insect amide+pleocidin or bacillus thuringiensis,Bt * P pleocidin or bacillus thuringiensis,Bt
The TTI of the ATI/M of the co-toxicity coefficient of M (CTC)=M * 100
In the formula:
M is pleocidin or bacillus thuringiensis,Bt and the mixture of the different proportionings of thiophene insect amide
P pleocidin or bacillus thuringiensis,Bt are pleocidin or bacillus thuringiensis,Bt shared ratio in mixture
P thiophene insect amide is thiophene insect amide shared ratio in mixture
(5) toxicity test result and analysis
Table 1 thiophene insect amide, pleocidin are to the indoor measurement result of diamond-back moth
As can be seen from the table, in being mixed of different proportion, its co-toxicity coefficient shows certain synergistic effect, wherein pleocidin all greater than 120: the thiophene insect amide is that 1.1: 13.9 synergistic effect is the most obvious, and co-toxicity coefficient is 186.38.Result of the test shows, pleocidin, two kinds of medicaments of thiophene insect amide all have higher activity to diamond-back moth under indoor conditions, the result of the test of different proportion proportioning shows, by the active ingredient pleocidin: the thiophene insect amide is 1.5: 13.5,1.3: 13.7,11: 13.9,0.9: 14.1,0.7: 14.3 o'clock, all show stronger synergistic effect, wherein take pleocidin: the thiophene insect amide is at 1.1: 13.9 o'clock, and synergistic effect is best.
Table 2 thiophene insect amide, bacillus thuringiensis,Bt are to the indoor measurement result of beet armyworm
Figure BDA0000043381920000071
As can be seen from the table, in being mixed of different proportion, its co-toxicity coefficient shows certain synergistic effect, wherein bacillus thuringiensis,Bt all greater than 120: the thiophene insect amide is that 6: 9 synergistic effect is the most obvious, and co-toxicity coefficient is 146.95.Result of the test shows, bacillus thuringiensis,Bt, two kinds of medicaments of thiophene insect amide all have higher activity to beet armyworm under indoor conditions, the result of the test of different proportion proportioning shows, in active ingredient ratio bacillus thuringiensis,Bt: the thiophene insect amide is 5: 10,6: 9,7: 8,8: 7,, all show stronger synergistic effect at 9: 6 o'clock, wherein take bacillus thuringiensis,Bt: the thiophene insect amide is at 6: 9 o'clock, and synergistic effect is best.Suggestion is carried out further field control effectiveness test to the mixture preparation of 6: 9 left and right sides scopes of suitable proportion, to estimate its field practical application effect.
Test example 1: field trial control diamond-back moth
(1) application method
Test is sprayed medicine 1 time altogether, and the dispenser date is July 3.This moment, a variety of Chinese cabbage had 5-6 sheet leaf.The diamondback moth larvae major part was in for 2~3 length of times.Weather is cloudy calm during the spray medicine.With the agricultural board level pressure of profit knapsack hand sprayer each is processed even spraying, leave dual sides all requires to be sprayed with the effect liquid.Every residential quarter liquid 2L.
(2) investigation method
Investigate each residential quarter and fix 15 strain a variety of Chinese cabbages as the investigation strain. record the larva quantity on whole blades.Investigate the insect population radix before spraying medicine, respectively 3,7 days and investigation in 10 days borer population alive behind the spray medicine.This test is investigated 4 times altogether.
(3) drug effect computational methods
Borer population * 100 lives before insect population decline rate (%)=(borer population of living after the borer population-dispenser of living before the dispenser)/dispenser
Preventive effect (%)=(treatment region insect population decline rate-check plot insect population decline rate)/(100-check plot insect population decline rate) * 100
(4) poisoning investigation method
Continuous 10d range estimation medicament does not have poisoning to produce to crop after the dispenser, and Growth of Cabbage is good.
(5) field control effectiveness test result
Table 3 treatment agent control diamond-back moth field control effectiveness test result
As can be seen from Table 3, the Mixed Pharmacy of different proportion, carry out field experiment by different consumptions, its control efficiency to the wild cabbage diamond-back moth all is better than contrasting medicament behind the medicine, 15% (pleocidin: the thiophene insect amide) (1.1: 13.9) behind medicine 10 days, insecticidal effect is respectively 86.69%, 90.20% and 92.94%, and insecticidal effect increases along with the increase of consumption, and each consumption is processed the insecticidal effect difference and reached extremely remarkable.According to the field range estimation, in the test dose scope, plant growth is normal, and the poisoning phenomenon to a variety of Chinese cabbage does not all appear in each treatment agent, illustrates that it is safe to a variety of Chinese cabbage.Advise that the insecticide different from the mechanism of action mixes use to delay the generation of pest resistance to insecticide.
Test example 2: field experiment control beet armyworm test
(1) test method
Tested on October 8th, 2010 to October 18 and carry out at Kaiping City, Guangdong Province suburb truck garden.Tested on October 8th, 2010 and carry out routine to water spray by each processing design concentration.Spraying equipment is WF-16 type knapsack hand sprayer, and shower nozzle is single fan nozzle, and operating pressure is 0.2-0.4Mpa, and spray amount is 0.36-0.48L/min, carries out the routine spraying, makes every effort to evenly thoughtful during the spray medicine.The field beet armyworm is 1~2 instar larvae peak period during dispenser.Every 667m 2Be 70kg to the water yield.
Duration of test weather is good, and daily mean temperature is 18.0~26.8 ℃.Dispenser was fine the same day.
(2) investigation method
Before dispenser in every residential quarter by 5 samplings of diagonal. every wild cabbage 2~3 strains (deciding on insect density) of choosing Beet Armyworm Eggs and larva.Statistics is demarcated beet exigua larvae head number in the strain. with this as dispenser before the insect population radix.In after the dispenser the 3rd, 7,10d investigates respectively the beet exigua larvae number of deciding residual survival in the strain. to proofread and correct the insect population decline rate as control efficiency
(3) drug effect computational methods.
Figure BDA0000043381920000091
Figure BDA0000043381920000092
(4) poisoning investigation method
Duration of test is observed and is respectively processed residential quarter wild cabbage well-grown, all finds no the poisoning phenomenon and occurs.
(5) field control effectiveness test result of the test
Table 4 treatment agent control Laphygma exigua Hubner field control effectiveness test result
As can be seen from Table 4, the Mixed Pharmacy of different proportion, carry out field experiment by different consumptions, its control efficiency to Laphygma exigua Hubner all is better than contrasting medicament behind the medicine, 15% (pleocidin: the thiophene insect amide) (1.1: 13.9) control beet armyworm quick-acting is fast, efficiency time is long, and control efficiency is good.10 days insecticidal effect reaches respectively 84.34%, 88.78%, 90.14% behind medicine, and insecticidal effect increases progressively along with the increase of consumption.According to experimental observation, each medication processing all without poisoning, also finds that it to insects such as diamond-back moths also have preferably control efficiency simultaneously to wild cabbage.The suggestion dispenser rests in beet exigua larvae before 3 ages period, requires even spraying during dispenser, blade face, blade back even medicine, advise that the medicament different from other mechanisms of action is used alternatingly, to delay the generation of pest resistance to insecticide.
Table 5 treatment agent control Laphygma exigua Hubner field control effectiveness test result
Figure BDA0000043381920000094
Figure BDA0000043381920000101
As can be seen from Table 5, the Mixed Pharmacy of different proportion carries out field experiment by different consumptions, its control efficiency to Laphygma exigua Hubner all is better than contrasting medicament behind the medicine, 6% bacillus thuringiensis,Bt+9% thiophene insect amide control beet armyworm quick-acting is fast, and efficiency time is long, and control efficiency is good.10 days insecticidal effect reaches respectively 89.12%, 90.57%, 92.32% behind medicine, and insecticidal effect increases progressively along with the increase of consumption.According to experimental observation, each medication processing all without poisoning, also finds that it to insects such as diamond-back moths also have preferably control efficiency simultaneously to wild cabbage.The suggestion dispenser rests in beet exigua larvae before 3 ages period, requires even spraying during dispenser, blade face, blade back even medicine, advise that the medicament different from other mechanisms of action is used alternatingly, to delay the generation of pest resistance to insecticide.
Test example 3: field experiment control prodenia litura test
(1) test method
Tested on July 2nd, 2010 to November 9 on Wang Zhuan wild cabbage ground, Liquan County, Xianyang, Shanxi province city, spraying equipment is WF-16 type knapsack hand sprayer, shower nozzle is single fan nozzle, operating pressure is 0.2-0.4Mpa, spray amount is 0.36-0.48L/min, carry out the routine spraying, make every effort to evenly thoughtful during the spray medicine.The field prodenia litura is 2 instar larvae peak periods during dispenser.Every 667m2 is 60kg to the water yield.
Duration of test weather is good, and daily mean temperature is 26~34.6 ℃.Dispenser was fine the same day.
(2) investigation method
Before dispenser, select sampling in every residential quarter by diagonal 5. every cowpea 2~3 strains (deciding on insect density) of choosing prodenia litura ovum and larva.Statistics is demarcated a Spodoptera litura larvae number in the strain. with this as dispenser before the insect population radix.In after the dispenser the 3rd, 7,10d investigates respectively the Spodoptera litura larvae number of deciding residual survival in the strain. to proofread and correct the insect population decline rate as control efficiency
(3) drug effect computational methods.
Figure BDA0000043381920000102
Figure BDA0000043381920000103
(4) poisoning investigation method
Duration of test is observed and is respectively processed residential quarter cowpea well-grown, all finds no the poisoning phenomenon and occurs.
(5) field control effectiveness test result of the test
Table 6 treatment agent control wild cabbage prodenia litura field control effectiveness test result
As can be seen from Table 6, the Mixed Pharmacy of different proportion carries out field experiment by different consumptions, its control efficiency to Laphygma exigua Hubner all is better than contrasting medicament behind the medicine, 6% bacillus thuringiensis,Bt+9% thiophene insect amide control prodenia litura instant effect, efficiency time is long, and control efficiency is good.10 days insecticidal effect reaches respectively 91.54%, 92.00%, 94.25% behind medicine, and insecticidal effect increases progressively along with the increase of consumption.According to experimental observation, each medication is processed cowpea all without poisoning.The suggestion dispenser rests in Spodoptera litura larvae before 2~3 ages period, requires even spraying during dispenser, blade face, blade back even medicine, advise that the medicament different from other mechanisms of action is used alternatingly, to delay the generation of pest resistance to insecticide.
To sum up the field experiment result is described several times, the present invention contains the Pesticidal combination of pleocidin or bacillus thuringiensis,Bt and thiophene insect amide, to diamond-back moth, the insect such as beet armyworm and prodenia litura shows good control efficiency, to the target crop safety, compare with single dose, Pesticidal combination of the present invention has mechanism of action uniqueness, the unit administration amount is few, quick-acting is good, the advantage that lasting period is long, so, in research and development of the present invention and popularization great social effect is arranged, can produce very large economic benefit, promote the peasant's of vast vegetables main producing region increasing both production and income, to agricultural product and Environmental security, the potentiality that vigorously promote the use are arranged.

Claims (4)

1. agricultural insecticide composition is characterized in that: take thiophene insect amide (A) and (B) pleocidin or carry out two yuan as active ingredient and be mixed (C) one of arbitrarily in the bacillus thuringiensis,Bt; The mass ratio of effective constituents A and B is 13.5:1.5; 13.7:1.3; 13.9:1.1; 14.1:0.9; 14.3:0.7 the mass ratio of effective constituents A and C is 10:5; 9:6; 8:7; 7:8; 6:9.
2. agricultural insecticide composition according to claim 1, it is characterized in that: effective constituents A and B or A and the C gross mass content in preparation is 1%-90%.
3. agricultural insecticide composition according to claim 1 is characterized in that: effective constituents A and B or A and the C preferred 10%-50% of gross mass content in preparation.
4. according to claim 1 and 2 or 3 described agricultural insecticide compositions, it is characterized in that: the formulation that this Pesticidal combination is mixed with is missible oil, suspending agent, wetting powder, water dispersible granules.
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CN102057925B (en) * 2011-01-21 2013-04-10 陕西上格之路生物科学有限公司 Insecticidal composition containing thiacloprid amide and biogenic insecticide
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CN104902753A (en) * 2012-05-30 2015-09-09 拜耳农作物科学股份公司 Compositions comprising a biological control agent and an insecticide
CN103202303A (en) * 2013-04-27 2013-07-17 海利尔药业集团股份有限公司 Insecticidal composition containing clothianidin and pyridalyl
CN106172504A (en) * 2016-06-29 2016-12-07 江苏邦盛生物科技有限责任公司 A kind of containing multiple killing teichomycin and the insecticides of Bacillus thuringiensis and application

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CN101305732A (en) * 2007-12-27 2008-11-19 天津市兴光农药厂 Pesticide combination containing thiacloprid
CN101305723B (en) * 2008-06-16 2011-05-11 陕西上格之路生物科学有限公司 Insecticidal composition containing spinosad and its use
CN101711525A (en) * 2009-11-10 2010-05-26 深圳诺普信农化股份有限公司 Water emulsion containing pleocidin and preparation method thereof
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