Background technology
Rice fulgorid is the important pests on China's Rice Production.Rice fulgorid mainly contains three aspects to the harm of paddy rice: sting suction rice juice 1..Adult of rice fulgorid and nymph are clustered in rice clump bottom, lunge in the paddy rice cane tissue with piercing mouth parts and to suck juice, and glandula is secreted a kind of noxious material when getting food, destroy rice strain tissue, many brown spots appear on the killed cane, endanger when serious, standing grain clump base portion is pitchy, and complete stool is withered gradually.Worm is measured when big, is everlasting to make paddy rice blue or green withered and dead in a short time, and the in flakes dead bar in rice field lodges.When late growth stage of rice endangers in a large number,, often can not go out fringe or become empty grain fringe if be injured booting stage; If the heading back is killed, then influence the paddy plumpness, thousand kernel weight alleviates, and rate of immatured grain increases.2. lay eggs and stab.When the female worm of rice fulgorid lays eggs, thrust leaf sheath and the cane tissue causes a large amount of wounds, destroy conducting tissue, hinder the conveying of nutriment with sharp-pointed ovipositor.3. cause that disease takes place.Rice fulgorid is the communication media of some paddy rice virus disease, and the wound by getting food, laying eggs and cause, and helps infecting of some rice disease.
Select at rice grub control medicament, the organophosphorous pesticide of many high poison, high residue is prohibited use by country.For a long time, the control of rice fulgorid relies on the medicament that Imidacloprid, buprofezin etc. are efficient, the lasting period is long.Regrettably, according to Ministry of Agriculture's damage by disease and insect monitoring for resistance laboratory investigation and research for many years, the rice fulgorid of some areas has produced pesticide resistance in various degree to medicaments such as Imidacloprids, and control efficiency is very poor.
Homoptera pests such as Bemisia tabaci, trialeurodes vaporariorum, leafhopper, aphid, because growth cycle is short, reproduction speed is fast, and breeding quantity is many, and generation overlap is serious, and control is got up very difficult, is easy to generate pesticide resistance simultaneously.
Therefore, seek the prevention and treatment method that has prevention and delaying drug resistance generation and can effectively tackle resistant insect and seem particularly important.
Coming pest control with the novel pesticide that does not have cross resistance is a good solution.But develop a novel pesticide at present and need screen 10,000~1.2 ten thousand compounds, expensive 1.2~1.5 hundred million dollars, the construction cycle is 5~10 years, is difficult to catch up with the speed that insect produces resistance.Other method such as crop allocation adjustment, different agricultural chemicals are rotated etc., in the process of practical operation, are difficult to really play obvious effects.
Butene-fipronil is the noval chemical compound of developing on fluorine worm itrile group plinth, belongs to the Phenylpyrazole insecticides.The butene-fipronil insecticidal spectrum is very wide, numerous insects is had excellent control efficiency, as insects such as Semiptera, Lepidoptera, thrips, coleopteras.Simultaneously, also very effective to the insect of cyclopentadiene, pyrethroid, carbamate insecticide generation resistance.The activity of butene-fipronil is suitable with fluorine worm nitrile, and hydrobiological toxicity is reduced relatively.
Pyridaben has another name called fast mite spirit, pyridaben, the magnitude of leading a cow, be efficient, wide spectrum miticide, absorption in not having is to tetranychid, Panonychus citri, unguiculus mite, close planting property of food such as goitre mite and do harm to mite and all have obvious control efficiency, and to ovum, if mite, become mite all effective, also effective to the mobile phase that becomes mite.
At present, the composite still unmanned report of pest control that is applied to of butene-fipronil and pyridaben.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present patent application people is in to the research of rice fulgorid pesticide resistance, the rice fulgorid of finding butene-fipronil antagonism Imidacloprid is active high, by further that butene-fipronil and other known farm chemical ingredients is composite, found that butene-fipronil and pyridaben are composite, plant hopper there is significant synergistic effect.Find that after further study the present composition can be used for preventing and treating insect and double harmful mite, the especially homoptera pest controlled, the more particularly homoptera pests such as rice fulgorid, leafhopper, Bemisia tabaci and trialeurodes vaporariorum on the various plants.
The present composition is an active component with butene-fipronil and pyridaben, and the ratio of weight and number of butene-fipronil and pyridaben is at 30: 1~1: 50, more preferably 1: 5~1: 30.All the other are the auxiliary material that allows use in the agricultural chemicals, and active ingredient butene-fipronil and pyridaben cumulant are 5~70% of composition total weight in the preparation, preferred 11~51%.
The present composition can adopt prior art, will contain the former medicine of these active ingredient butene-fipronils and pyridaben and suitable auxiliary material and make upward available any formulation of agricultural; Pesticidal combination provided by the invention, can be according to crop, the environmental condition of living in of required control, prevent and treat all kinds of factors such as method, control cost, preferred formulation is wetting powder, aqueous emulsion, missible oil, microemulsion, water dispersible granules (or aqueous dispersion tablets), suspending agent.
Auxiliary material in the present composition comprises that solvent, dispersant, wetting agent, emulsifier, stabilizing agent, thickener, pH regulator agent, antifreezing agent, excipient, filler and other are of value to the known substance of active ingredient stable and drug effect performance in preparation, select different auxiliary material to be mixed with corresponding formulation as required.Above-mentioned auxiliary material all is the various compositions that permission commonly used in the pesticidal preparations is used, and is not particularly limited.
The processing technology of the various preparations of the present composition adopts known method preparation, is method commonly used in the pesticidal preparations processing technology.
Product described in the invention can the finished product preparation form provide, and promptly each material mixes in the composition, and the composition of composition also can provide with single agent form, directly directly mixes in bucket or jar before the use, is diluted to required concentration then.
Embodiment 1
Former medicine (present specification Central Plains medicine refers to butene-fipronil and pyridaben, below repeats no more), various auxiliary agent and filler etc. are fully mixed, after ultrafine crusher is pulverized, be mixed with wetting powder.For example following prescription:
Butene-fipronil 20%
Pyridaben 1%
Lauryl sodium sulfate (surfactant) 2%
White carbon black (filler) 5%
Vinylpyrrolidone (adhesive) 3%
Sodium lignin sulfonate (dispersant) 6%
Attapulgite (filler) complements to 100%.
Embodiment 2
Except that prescription, present embodiment and embodiment 1 compound method are basic identical.It is as follows to fill a prescription:
Butene-fipronil 2%
Pyridaben 68%
The withered powder of tea (surfactant) 5%
Polyvinyl alcohol (dispersing binder) 8%
Sodium lignin sulfonate (dispersant) 9%
Bentonite (filler) complements to 100%
Embodiment 3
Add solvent, former medicine, emulsifier respectively, mix, use the hot bath heating for dissolving in case of necessity, promptly obtain transparence butene-fipronil pyridaben missible oil.For example following prescription:
Butene-fipronil 1%
Pyridaben 15%
No. 500 (emulsifier) 8% of farming breast
Nongru-700 number (emulsifier) 3%
Ethanol (cosolvent) 8%
Dimethylbenzene (solvent) complements to 100%
Embodiment 4
Except that prescription, present embodiment and embodiment 3 compound methods are basic identical.It is as follows to fill a prescription:
Butene-fipronil 1%
Pyridaben 10%
No. 500 (emulsifier) 6% of farming breast
Ethanol (cosolvent) 7%
No. 2201 (emulsifier) 3% of farming breast
Dimethylbenzene (solvent) complements to 100%
Embodiment 5
Former medicine, solvent, emulsifier added with co-emulsifier be in the same place, make and be dissolved into even oil phase.Water, antifreeze etc. is mixed, becomes the homogeneous water.Under high-speed stirred, water is joined oil phase or oil phase is joined water, form the aqueous emulsion of favorable dispersibility.For example following prescription:
Butene-fipronil 3%
Pyridaben 15%
Polyvinyl alcohol (dispersing binder) 2%
Alkylaryl polyoxyethylene poly-oxygen propylene aether (emulsifier) 3.5%
No. 2201 (emulsifier) 5% of farming breast
Dimethyl formamide (solvent) 12%
Ethylene glycol (antifreezing agent) 4%
Organosilicon (defoamer) 0.4%
Water complements to 100%
Embodiment 6
Former medicine is mixed pulverizing with powder carrier, wetting spreader-sticker and binding agent etc.; again after water is mediated; add in the comminutor that the certain specification screen cloth is housed and carry out granulation, and then drying, screening (pressing the screen cloth scope) promptly get butene-fipronil pyridaben water dispersible granules.For example following prescription:
Butene-fipronil 45%
Pyridaben 1.5%
Ethanol (cosolvent) 5%
No. 500 (emulsifier) 10% of farming breast
Fatty alcohol-polyoxyethylene ether JFC (bleeding agent) 10%
N-butanol (solvent) complements to 100%
Embodiment 7
Except that prescription, present embodiment and embodiment 6 compound methods are basic identical.It is as follows to fill a prescription:
Butene-fipronil 1%
Pyridaben 50%
Ethanol 3%
No. 500 (emulsifier) 5% of farming breast
Agricultural emulsifier NO (emulsifier) 3%
Fatty alcohol-polyoxyethylene ether JFC (bleeding agent) 7%
N-butanol (solvent) complements to 100%
Embodiment 8
With water is medium, and former medicine, dispersant, suspending agent and antifreezing agent etc. are joined in the sand milling still, carries out porphyrize, makes the butene-fipronil Damanling suspension agent.For example following prescription:
Butene-fipronil 0.5%
Pyridaben 20%
Methyl naphthalene sulfonate formaldehyde condensate (dispersant) 6%
Polyoxyethylene nonylphenol ether (surfactant) 3%
Aluminium-magnesium silicate (suspending agent) 0.5%
Ethylene glycol (antifreezing agent) 7%
Tributyl phosphate (defoamer) 2%
Silicone oil (defoamer) 0.2%
Water complements to 100%
Embodiment 9
Except that prescription, present embodiment and embodiment 8 compound methods are basic identical.It is as follows to fill a prescription:
Butene-fipronil 0.5%
Pyridaben 10%
Methyl naphthalene sulfonate formaldehyde condensate (dispersant) 4%
Polyoxyethylene nonylphenol ether (surfactant) 3%
Aluminium-magnesium silicate (suspending agent) 0.5%
Ethylene glycol (antifreezing agent) 5%
Tributyl phosphate (defoamer) 2%
Silicone oil (defoamer) 0.2%
Water complements to 100%
Embodiment 10
Former medicine, solvent, emulsifier etc. are added together, make and be dissolved into even oil phase, be added to the water, stir, make the butene-fipronil pyridaben micro-emulsion.For example following prescription:
Butene-fipronil 5%
Pyridaben 0.5%
Ethanol (solvent) 4%
No. 500 (emulsifier) 2% of farming breast
Soluble starch (emulsifier) 1%
Epoxidized soybean oil (stabilizing agent) 0.5%
Castor oil polyoxyethylene polyethenoxy ether (emulsifier) 0.5%
Water complements to 100%
Embodiment 11
Except that prescription, present embodiment and embodiment 10 compound methods are basic identical.It is as follows to fill a prescription:
Butene-fipronil 5%
Pyridaben 5%
Ethanol (solvent) 7%
No. 500 (emulsifier) 8% of farming breast
Urea (density adjuster) 1%
Organic silicone oil (defoamer) 0.5%
Castor oil polyoxyethylene polyethenoxy ether (emulsifier) 2%
Water complements to 100%
Biological activity determination
1, indoor biological activity determination
Test medicine adopts former medicine, with adding emulsifier after the dissolution with solvents, is diluted with water to suitable concentration.Each chemicals treatment is established 5~7 concentration gradients, and establishes blank clear water contrast.Rice stem infusion process is adopted in test.The time that the rice stem is immersed in the soup is 30 seconds.Treat that soup on the rice stem preserves moisture rice stem root after air-dry with the cotton ball parcel, be positioned in the disposal plastic cup.Three repetitions of every processing, each repeats to connect 20 tritonymphs.After connecing worm, place 16H/8H illumination constant incubator (27 degrees centigrade) to cultivate on the rice stem.4 days checkout facility results behind the medicine, the statistics lethality.
With each logarithm value of handling effective ingredient concentration (μ g/ml) is independent variable X, and the probit value that inhibiting rate changes into is dependent variable Y, uses the expert data DPS of statistical software to handle, concentration LC in calculating the virulence regression equation formula and suppressing
50
Calculate the toxicity index of each medicament and the co-toxicity coefficient of mixture (CTC value) according to the abundant method of Sun Yun, CTC≤80 are antagonism, and 80<CTC<120 are summation action, and CTC 〉=120 are synergistic effect.
Toxicity Determination the results are shown in Table 1.As can be seen from Table 1, butene-fipronil and pyridaben were mixed between 30: 1~1: 50, and rice fulgorid is all had obvious synergistic effect.
The composite Toxicity Determination result of table 1 butene-fipronil and pyridaben to rice fulgorid
Medicament and proportioning |
Lethal concentration of 50 LC
50(ug/ml)
|
Co-toxicity coefficient (CTC) |
Butene-fipronil (A) |
3.58 |
/ |
Pyridaben (B) |
18.96 |
/ |
A∶B(30∶1) |
3.02 |
121.73 |
A∶B(20∶1) |
2.44 |
152.62 |
A∶B(10∶1) |
1.78 |
217.14 |
A∶B(5∶1) |
1.42 |
291.53 |
A∶B(1∶1) |
2.17 |
277.55 |
A∶B(1∶5) |
2.79 |
396.02 |
A∶B(1∶10) |
3.25 |
419.53 |
A∶B(1∶20) |
3.42 |
460.23 |
A∶B(1∶30) |
4.18 |
398.37 |
A∶B(1∶40) |
4.52 |
379.68 |
A∶B(1∶50) |
4.78 |
365.83 |
2. field efficiency test
Adopt spraying to handle, begin dispenser, 3 days checkout facility results behind the medicine in insect pest generation Sheng phase beginning.The preventive effect computational methods are all carried out State Standard of the People's Republic of China's " pesticide field efficacy medicine test criterion ".See field efficacy embodiment 1-11 for details.
Field efficiency test 1
Controlling object is that (field brown planthopper and white-backed planthopper mixed population, wherein the brown planthopper ratio is about 80% to rice fulgorid.Test site is Huaining, Anhui, and the result of resistance monitoring shows that brown planthopper produces high-level resistance to Imidacloprid).Embodiment 1 prescription is sprayed according to 4000 times of dilutions, 72 hours control efficiency are 96.27% behind the medicine, and the preventive effect of 1000 times of contrast medicament 5% butene-fipronil missible oil, 1000 times of 20% pyridaben missible oil, 2000 times of 10% imidacloprid wettable powders is respectively 85.75%, 76.39% and 51.45%.
Field efficiency test 2
Controlling object is the paddy rice Erythroneura subrufa, and test site is Dongyang, Zhejiang.According to 5000 times of dilution sprayings, 72 hours control efficiency are 95.18% behind the medicine with embodiment 2 prescriptions, and the preventive effect of 1000 times of contrast medicament 5% butene-fipronil missible oil, 1000 times of 20% pyridaben missible oil is respectively 86.32%, 77.25%.
Field efficiency test 3
Controlling object is a rice black-tailed leafhopper, Jing Zhou, test site Hubei.According to 1000 times of dilution sprayings, 72 hours control efficiency are 94.35% behind the medicine with embodiment 3 prescriptions, and the preventive effect that 1000 times of contrast medicament 5% butene-fipronil missible oil and 20% pyridaben missible oil are 1000 times is respectively 86.24% and 75.17%.
Field efficiency test 4
Controlling object is the black thrips of fresh kidney beans, Sanya, test site Hainan.According to 1500 times of dilution sprayings, 72 hours control efficiency are 96.23% behind the medicine with embodiment 3 prescriptions, and the preventive effect that 1000 times of contrast medicament 5% butene-fipronil missible oil and 20% pyridaben missible oil are 1000 times is respectively 85.41% and 76.35%.
Field efficiency test 5
Controlling object is a paddy rice brown planthopper (test site Hepu of Guangxi, the result of resistance monitoring show Imidacloprid is produced medium resistance), embodiment 5 prescriptions are sprayed according to 1500 times of dilutions, 72 hours control efficiency are 95.18% behind the medicine, and the preventive effect of 1000 times of contrast medicament 5% butene-fipronil missible oil, 1000 times of 20% pyridaben missible oil, 1000 times of 5% Imidacloprid missible oil is respectively 83.26%, 74.69% and 57.31%.
Field efficiency test 6
Controlling object is the eggplant Frankliniella occidentalis, Lingshui, test site Hainan.According to 10000 times of dilution sprayings, 72 hours control efficiency are 97.31% behind the medicine with embodiment 6 prescriptions, and the preventive effect that 1000 times of contrast medicament 5% butene-fipronil missible oil and 20% pyridaben missible oil are 1000 times is respectively 87.52% and 78.46%.
Field efficiency test 7
Controlling object is the greenhouse cucumber trialeurodes vaporariorum, test site ShenZhen,GuangDong Long Gang.According to 3000 times of dilution sprayings, 72 hours control efficiency are 95.43% behind the medicine with embodiment 7 prescriptions, and the preventive effect that 1000 times of contrast medicament 5% butene-fipronil missible oil and 20% pyridaben missible oil are 1000 times is respectively 84.67% and 77.53%.
Field efficiency test 8
Controlling object is cucumber aphid and cucumber two spotted spider mite (taking place simultaneously), Zhaoqing, test site Guangdong.Embodiment 8 prescriptions are sprayed according to 1500 times of dilutions, cucumber aphid and cucumber two spotted spider mite control efficiency be respectively 94.17% and 95.34% in 72 hours behind the medicine, 1000 times of preventive effects to the cucumber aphid of contrast medicament 5% butene-fipronil missible oil are 81.36%, 1000 times of preventive effects to the cucumber two spotted spider mite of contrast medicament 20% pyridaben are respectively 83.28%.
Field efficiency test 9
Controlling object is the paddy rice thrips, the test site Qionghai.According to 800 times of dilution sprayings, 72 hours control efficiency are 97.39% behind the medicine with embodiment 9 prescriptions, and the preventive effect that 1000 times of contrast medicament 5% butene-fipronil missible oil and 20% pyridaben missible oil are 1000 times is respectively 88.47% and 76.65%.
Field efficiency test 10
Controlling object is the tomato Bemisia tabaci, Cangnan, test site Zhejiang.According to 1500 times of dilution sprayings, 72 hours control efficiency are 94.27% behind the medicine with embodiment 10 prescriptions, and the preventive effect that 1000 times of contrast medicament 5% butene-fipronil missible oil and 20% pyridaben are 1000 times is respectively 83.75% and 75.16%.
Field efficiency test 11
Controlling object is a Phyllotreta striolata, test site ShenZhen,GuangDong Gongming.According to 2000 times of dilution sprayings, 72 hours control efficiency are 94.15% behind the medicine with embodiment 11 prescriptions, and the preventive effect that 1000 times of contrast medicament 5% butene-fipronil missible oil and 20% pyridaben are 1000 times is respectively 84.26% and 71.28%.
More than test shows that the control efficiency of this prescription is better than single agent kind, significant difference.Show that said composition has excellent synergistic effect, can reduce the formulation rate of agricultural chemicals simultaneously.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.