CN107006466A - Bactericidal composition containing metrafenone - Google Patents

Bactericidal composition containing metrafenone Download PDF

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Publication number
CN107006466A
CN107006466A CN201710247522.5A CN201710247522A CN107006466A CN 107006466 A CN107006466 A CN 107006466A CN 201710247522 A CN201710247522 A CN 201710247522A CN 107006466 A CN107006466 A CN 107006466A
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metrafenone
bactericidal composition
active components
agent
composition
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不公告发明人
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Beijing Agricultural Science And Technology Center
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Beijing Agricultural Science And Technology Center
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N35/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical
    • A01N35/04—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical containing aldehyde or keto groups, or thio analogues thereof, directly attached to an aromatic ring system, e.g. acetophenone; Derivatives thereof, e.g. acetals
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/06—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings
    • A01N43/08—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings with oxygen as the ring hetero atom
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
    • A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
    • A01N43/42—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings condensed with carbocyclic rings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
    • A01N43/54—1,3-Diazines; Hydrogenated 1,3-diazines
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
    • A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
    • A01N43/74—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,3
    • A01N43/78—1,3-Thiazoles; Hydrogenated 1,3-thiazoles
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
    • A01N47/18—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, directly attached to a heterocyclic or cycloaliphatic ring
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/26—Phosphorus; Compounds thereof

Abstract

The invention provides a kind of Synergistic biocidal composition containing metrafenone, it is characterized in that including active components A and B, wherein, A is metrafenone, B is one or more kinds of combinations in fluorine mepanipyrim, dimethirimol, flutianil, furametpyr, smart furalaxyl, picarbutrazox, tebufloquin, phosphorous acid and its salt, also include the auxiliary agent that can be used in Pesticide formulation, conventional pesticidal preparations are made, and applied to controlling plant diseases.

Description

Bactericidal composition containing metrafenone
Technical field
The invention belongs to pesticides application technical field, it is related to a kind of composition pesticide, it is specifically a kind of to contain metrafenone Bactericidal composition, applied to controlling plant diseases.
Background technology
In agricultural production process, serious, the nutrition organs such as harm axis, leaf, and fruit, kind occur for plant disease The organ of multiplication such as son, stem tuber position, influences photosynthesis of plant, influences Leaf-feeding insects outward appearance, crop yield is fallen sharply, under quality Drop is serious.When disease occurs serious, crop is caused to be had no harvest.Therefore, plant disease in produce reality there is important preventing and treating to anticipate Justice, bactericide is the most economic, the quick and effective method of controlling plant diseases.
Single bactericide is limited using easily developing immunity to drugs or preventing and treating spectrum, can not solve well in produce reality Plant disease endangers.Mixture bactericide, which has, can expand preventing and treating spectrum, enhancing preventive effect, delay the advantages such as the phytopathogen resistance to the action of a drug, Turn into most popular application form in production practices.Especially there is the bactericide of synergy, each effective group of bactericide Point interphase interaction, makes combination aging fruit better than the theoretical summation that effect is used alone, thus can play in actual use thing The effect of half work(times, is more favored by user.
Metrafenone (metrafenone) is BASF AG in the Benzophenone class of exploitation registration input English market in 2004 Bactericide.By disturbing the foundation and formation of polarity actin tissue, make germ mycelium apical cell formation by Interference and suppression, so as to hinder mycelial normal development and growth.With prevention, treatment and suppression production spore activity.To germ tube There is inhibitory action with mycelial growth.It is mainly used in preventing and treating the powdery mildew on the crops such as wheat, fruit tree, vegetables.CAS accession number is 220899–03–6.Its structural formula is as follows：
Fluorine mepanipyrim (diflumetorim), dimethirimol (dimethirimol), flutianil, furametpyr (furametpyr), smart furalaxyl (furalaxyl-M), picarbutrazox, tebufloquin, phosphorous acid and its salt are several The bactericide of broad spectrum activity is planted, excellent preventive effect is shown to the plant disease in various crop.
The present invention is studied by substantial amounts of formulation screening test and found, when metrafenone and fluorine mepanipyrim, dimethirimol, Flutianil, furametpyr, smart furalaxyl, picarbutrazox, tebufloquin, phosphorous acid and its one kind in salt or When more than one medicaments are combined, surprising bactericidal effect is shown, that is, shows good synergy, actually kills Bacterium effect is substantially better than the theoretical summation of exclusive use, has application prospect widely in production.
The content of the invention
The present invention relates to Synergistic biocidal composition, including active components A and B, described active components A is metrafenone (metrafenone), described active component B be fluorine mepanipyrim, dimethirimol, flutianil, furametpyr, smart furalaxyl, One or more kinds of combinations in picarbutrazox, tebufloquin, phosphorous acid and its salt.In addition, also including agricultural chemicals The auxiliary agent that can be used in preparation processing.
The composition especially good effect can be used to prevent and treat the plant disease in various useful crops, described useful Crop includes but is not limited to conventional breeding crop, genetically modified crops, asexually propagated crop and asexual propagation material, domesticating and cultivating Wild plant etc., is particularly suitable for use in preventing and treating wheat, cucurbitaceae vegetable, tomato, eggplant, balsam pear, pea, grape, cherry, peach, apple Really, the crop disease such as pears, citrus.
The instantiation that can be mentioned that can use the representative plant disease of composition for preventing and controlling of the invention, the example for some It is not limited to specified genus kind.It should be noted that the invention is not limited in example in detail below, can also prolong in the same manner Other plant diseases are reached, bracket indicates its cause of disease Latin name：
Wheat powdery mildew (Blumeria graminis), cucurbitaceae vegetable (cucumber, cucurbita pepo, pumpkin) powdery mildew (Sphaerotheca fuliginea), wax gourd and balsam pear powdery mildew (Sphaerotheca cucurbitae), powdery mildew of pea (Erysiphe pisi), uncinula necator (Uncinula necate), apple, pears powdery mildew (Podosphaera Leucotricha), cherry powdery mildew (Podosphaera clandestina), Kiwi berry powdery mildew (Phyllactinia Actinidiae), mandarin tree powdery mildew (Oidium citri), tomato and pepper powdery mildew (Leveillula taurica), The rotten mildew (Pythium splendens) of eggplant powdery mildew (Oidium neolycopersici), ornamental plant, ornamental plant Downy mildew (Peronospora sparsa), cucumber downy mildew (Pseudoperonospora cubensis), downy mildew of garpe (Plasmopara viticola), potato and tomato late blight (Phytophthora infestans) etc..
In order to solve the above-mentioned technical problem, the present invention, which is adopted the following technical scheme that, is achieved：
The present composition component A and B can be with arbitrary proportion mixtures, and a kind of usual active component content is higher than rest activity Composition, preferably mixing ratio are 100：1 to 1：100 or 50：1 to 1：50.
The present composition can be by the way that active component be mixed with the auxiliary agent that can be used in Pesticide formulation, with known Method is prepared as conventional preparation, such as missible oil, wettable powder, water dispersible granules, suspending agent, aqueous emulsion, microemulsion, granule Deng.The active component of the active component of 0.1~95% weight, preferably 0.5~90% weight is typically contained in preparation.
The auxiliary agent that can be used in Pesticide formulation includes but is not limited to：Water, solvent, filler, various surfactants (emulsifying agent, dispersant, wetting agent etc.), adhesive, film forming agent, colouring agent, antifreezing agent, thickener, suspending agent, disintegrant, disappear Infusion, bleeding agent, synergist, stabilizer, wall capsule material, pH adjusting agent, preservative etc..Also, suitably, in order to improve to spy Ordered goods tolerance, can be properly added safener；Or sometimes for crop growth is promoted, can add in mixture composition Plus conventional agriculture fertilizer, medicament-fertilizer mixture is made.These auxiliary agents are all the compositions commonly used in pesticidal preparations or allow to use, and have no spy Do not limit, one or more auxiliary agent may be selected and constitutes, specific composition and consumption are according to recipe requirements by simply testing It is determined that.
The production technology of the various application forms of composition belongs to existing known technology, will not be repeated here.
The present composition can be used in a variety of ways, be such as watered spraying in a usual manner and used, or directly spread fertilizer over the fields or ditch Apply, or mix pesticide-clay mixture and spread fertilizer over the fields, when plant seeding, emerge before, emerge after vegetative growth phase and reproductive stage can be used.With Dose can change in relative broad range, and depending on situation, application method, crop, the plant disease kind to be prevented and treated of soil Class and seedling age size, weather conditions at that time and other factors.The present composition is generally with 0.001~0.5kg active components The consumption of mixture/hectare is applied, it is further preferable that being applied with the consumption of 0.01~0.2kg mixture of active principles/hectare.
The present invention compared with prior art, has the following technical effect that：
1st, mixture composition has good synergy, and application effect is substantially better than single dose theoretical effect summation, that is, had There is super superposition, plant disease occurrence injury can be better controled over；
2nd, there is good complementarity in control of plant disease spectrum between mixture composition active component, can expands very well Preventing and treating spectrum, synthesis effectively controls various plant disease occurrence injuries；
3rd, mixture composition has good synergy, can reduce medicament usage amount, and reduction use cost and environment are dirty Dye, improves the security to crop.
Embodiment
Specific embodiment of the invention given below is, it is necessary to which explanation is that the invention is not limited in implement in detail below Example, all equivalents done on the basis of technical scheme each fall within protection scope of the present invention.
Embodiment 1：24% missible oil
Being formulated composition is：Active components A is 9%, and active component B is 15%, emulsifying agent calcium dodecyl benzene sulfonate 4%, Emulsifying agent phenethyl phenol polyethenoxy ether 5%, solvent xylene complements to 100%.
Preparation method is：All materials are put into batching kettle, stirring and dissolving after chemical examination is qualified, is shifted to fully transparent It is filling to storage tank.
Embodiment 2：36% suspending agent
Being formulated composition is：Active components A is 10%, and active component B is 26%, wetting agent phenethyl phenol polyethenoxy ether 5%, dispersant sodium lignin sulfonate 4%, antifreeze glycol 5%, thickener xanthans 0.2%, water complements to 100%.
Preparation method is：By in active component and wetting agent, dispersant, antifreezing agent and water input stirred tank, it is sufficiently stirred for Afterwards, material is pumped into sand mill and be fully ground, after the completion of grinding, be pumped into high-speed shearing machine, add after thickener, enter Row high speed shear, is made suspending agent after the completion of shearing.
Embodiment 3：42% water dispersible granules
Being formulated composition is：Active components A is 18%, and active component B is 24%, wetting agent lauryl sodium sulfate 5%, point Powder polycarboxylate 2%, dispersant sodium lignin sulfonate 3%, disintegrant ammonium sulfate 3%, adhesive carboxymethyl cellulose 0.3%, filler bentonite complements to 100%.
Preparation method is：After all materials are well mixed, crush, be well mixed again through airslide disintegrating mill, then, plus Enter a certain amount of water to mediate this mixture, extruder grain, through drying screening, that is, obtain water dispersible granules.
Embodiment 4：21% aqueous emulsion
Being formulated composition is：Active components A is 8%, and active component B is 13%, solvent xylene 10%, emulsifying agent alkyl phenol APEO 4%, emulsifying agent aerosol-OT salt 5%, antifreezing agent glycerine 5%, water complements to 100%.
Preparation method is：After active components A and B solvents are fully dissolved, input emulsifying agent forms oil after being sufficiently stirred for Phase；Antifreezing agent is added to the water dissolving, aqueous phase is formed；Aqueous phase is slowly added in oil phase, sheared using high-speed shearing machine, you can Obtain aqueous emulsion.
Embodiment 5：30% microemulsion
Being formulated composition is：Active components A is 18%, and active component B is 12%, solvent xylene 6%, solvent cyclohexanone 3%, emulsifying agent phenethyl phenol polyethenoxy ether 7%, emulsifying agent disecoctylmaleate sodium sulfonate 8%, antifreezing agent second two Alcohol 4%, water complements to 100%.
Preparation method is：After active components A and B solvents are fully dissolved, input emulsifying agent and antifreezing agent are well mixed, Deionized water is eventually adding, high speed shear is carried out, you can microemulsion is obtained.
Embodiment 6：48% wettable powder
Being formulated composition is：Active components A is 12%, and active component B is 36%, and wetting agent sldium lauryl sulfate 5% disperses Agent alkyl naphthalene sulfonic acid formaldehyde condensation products sodium salt 2%, dispersant is to methoxyl group fatty acyl amido benzene sulfonic acid sodium salt 3%, filler concave convex rod Soil complements to 100%.
Preparation method is：Active component and each auxiliary agent are well mixed, carry out just smashing in the mechanical disintegrating machine of input, afterwards Crushed through airslide disintegrating mill, remix uniform, i.e., obtained wettable powder.
Embodiment 7：8% granule
Being formulated composition is：Active components A is 3%, and active component B is 5%, wetting agent sulfosuccinic acid monooctyl ester sodium salt 0.8%, dispersant naphthalenesulfonic acid-formaldehyde condensate 0.7%, colouring agent carbon black 0.3%, filler kaolin complements to 100%.
Preparation method is：After all materials are well mixed, add a certain amount of water and mediate this mixture, extruding is made Grain, through drying screening, that is, obtains granule.
Application effect example：
1st, test method
(1) to the bioactivity of wheat powdery mildew
Reference《The part of NYT 1156.4-2006 farm-chemical indoor determination test rules bactericide the 4th：Prevent and treat white wheat Powder disease experiment pot-culture method》Carry out.
It is that laboratory is seeded on fresh wheat seedling for examination germ with wheat powdery mildew (Blumeria graminis) Expand numerous standby.
With wheat susceptible variety " Zheng wheat 9023 " is that for studying thing, 20 seeds are broadcast per basin, and wherein 10 plants are selected after emerging, Length is standby to 2 leaves~3 leaf phases.
Choose and expand numerous use incidence of leaf, the wheat powdery mildew Fresh spores produced in 24h are uniformly shaken off to 2 leaf~3 The leaf phase is " on the wheat seedling of Zheng wheat 9023 ".It is inoculated with after 24h, the decoction prepared is uniformly sprayed in blade face to whole wettings.Then 18 DEG C, humidity be 70%, light application time be 16h, interlunation be to be cultivated in constant incubator under the conditions of 8h.Often processing is set 4 repetitions, every repeatedly 3 basin, and set the processing without medicament and make blank control.When the blank control incidence of disease reaches more than 80% When, incidence is managed in classification investigation everywhere.Calculate the disease index and prevention effect of each processing.
Disease index is calculated by formula (1), and prevention effect is calculated by formula (2), and result of calculation retains 2 significant digits.
In formula：
X-disease index；
Ni- sick the number of sheets at different levels；
I-relative value of series；
N-investigation total number of sheets；
9-highest value of series.
In formula：
P-prevention effect, unit is percentage (%)；
CK-blank control disease index；
PT-chemicals treatment disease index.
(2) to the bioactivity of cucumber powdery mildew's pathogen
Reference《The part of NYT 1156.11-2008 farm-chemical indoor determination test rules bactericide the 11st：Preventing and treating is melon Powdery mildew experiment basin cuts out method》Carry out.
It is, for examination germ, to be adopted from the sick leaf of field cucumber with cucumber powdery mildew's pathogen (Sphaerotheca fuliginea) Collection, indoor inoculation expands numerous standby on fresh cucumber seedling.
It is that laboratory is potted plant, seedling length to 2~4 leaf periods for studying thing with cucumber susceptible variety " the close thorn in Xintai City " It is standby.
Choose and expand numerous use incidence of leaf, with the pure water added with a small amount of 0.1% Tween-80, fresh spore is eluted from sick leaf Son, eluent is filtered with double gauze, and it is 1 × 10 that concentration, which is made,5Individual spore/mL spore suspension, by its spray inoculation in On " the close thorn in Xintai City " cucumber leaves.It is inoculated with after 24h, the decoction prepared is uniformly sprayed in blade face to whole wettings.Treat decoction Natural air drying, moves to growth cabinet culture, is cultivated under the conditions of 20 DEG C, 12h alternation of light and darkness.Often processing sets 4 repetitions, often 5 basins are repeated, per 2 plants of basin, and the processing without medicament is set and makees blank control.When the sick leaf rate of blank control reaches more than 80%, Incidence is managed in classification investigation everywhere.Calculate the disease index and prevention effect of each processing.
Disease index is calculated by formula (3), and prevention effect is calculated by formula (2), and result of calculation retains 2 significant digits.
In formula：
X-disease index；
Ni- sick the number of sheets at different levels；
I-relative value of series；
N-investigation total number of sheets；
11-highest value of series.
(3) to the bioactivity of bacterium of downy mildew of cucumber
Reference《The part of NYT 1156.7-2006 farm-chemical indoor determination test rules bactericide the 7th：Prevent and treat cucumber cream Mildew experiment basin cuts out method》Carry out.
It is that laboratory is seeded in cucumber for examination germ with bacterium of downy mildew of cucumber (Pseudoperonospora cubensis) Expand numerous standby on seedling.
It is that laboratory is potted plant, seedling length to 4~6 leaf periods for studying thing with cucumber susceptible variety " Chang Chun Mi Ci " It is standby.
Choose and expand numerous use incidence of leaf, lower blade back side Pseudoperonospora cubensis sporangium is washed with 4 DEG C of distillations, eluent is double-deck Filtered through gauze, it is 1 × 10 that concentration, which is made,5Individual sporangium/mL sporangia suspension, its spray inoculation is yellow in " Chang Chun Mi Ci " Melon seedling vacuum side of blade (Pseudoperonospora cubensis easily infects vacuum side of blade), dark moisturizing culture 24h, by the decoction prepared uniformly spray in Blade face is to whole wettings.Then under the conditions of 17~22 DEG C, 12h alternation of light and darkness, relative humidity is training under conditions of more than 90% Support.Often processing sets 4 repetitions, often repeatedly 5 basin, per 2 plants of basin, and sets the processing without medicament and make blank control.When blank pair When reaching more than 80% according to the incidence of disease, incidence of investigating is classified.Calculate the disease index and prevention effect of each processing.
Disease index is calculated by formula (1), and prevention effect is calculated by formula (2), and result of calculation retains 2 significant digits.
(4) compositions contemplated activity judges
Judge bactericide in the transnational agricultural chemicals enterprise formulation patents such as compositions contemplated activity reference Bayer, elder generation just reach, Tao Shi The method (COLBY methods) of compositions contemplated activity：COLBY, S.R.：“Calculating Synergistic and Antagonistic Responses of Herbicide Combinations ", Weeds 15, p.20~22,1967 are carried out.
Compositions contemplated activity is calculated by (4) formula：
In formula：
The preventive effect when consumption of X-bactericide 1 is P；
The preventive effect when consumption of Y-bactericide 2 is Q；
The substantial activity of actual preventive effect, i.e. mixture bactericide after E-bactericide 1 is mixed according to the above ratio with bactericide 2；
E0The consumption of-bactericide 1 is the expection activity of the theoretical preventive effect, i.e. mixture bactericide when the consumption of P+ bactericide 2 is Q.
As E ＞ E0When, if that is, the substantial activity of Mixed Pharmacy exceedes calculated expection activity, the combination just has Super superposition, that is, act synergistically.
2nd, result of the test
Result of the test refers to table 1~5, it is seen then that active components A (metrafenone) with selected from active component B (tebufloquin, Fluorine mepanipyrim, flutianil, smart furalaxyl etc.) medicament mixture after, substantial activity is all higher than expection activity, illustrates metrafenone There is synergy with the medicament mixture in active component B.
The metrafenone of table 1 and synergy effect of the tebufloquin mixtures to wheat powdery mildew
The metrafenone of table 2 and synergy effect of the fluorine mepanipyrim mixture to wheat powdery mildew
The metrafenone of table 3 and synergy effect of the flutianil mixtures to cucumber powdery mildew's pathogen
The metrafenone of table 4 and synergy effect of the smart furalaxyl mixture to bacterium of downy mildew of cucumber
The metrafenone of table 5 and synergy effect of the picarbutrazox mixtures to bacterium of downy mildew of cucumber

Claims (5)

1. bactericidal composition, it is characterised in that including active components A and B.
2. bactericidal composition as claimed in claim 1, it is characterised in that described active components A is metrafenone.
3. bactericidal composition as claimed in claim 1, it is characterised in that described active component B is fluorine mepanipyrim, diformazan is phonetic One kind in phenol, flutianil, furametpyr, smart furalaxyl, picarbutrazox, tebufloquin, phosphorous acid and its salt Or more than one combinations.
4. the bactericidal composition as described in claim 1,2 or 3, it is characterised in that in addition to active components A and B, in addition to agriculture The auxiliary agent that can be used in medicine preparation processing.
5. the bactericidal composition as described in claim 1,2,3 or 4, it is characterised in that be applied to controlling plant diseases.
CN201710247522.5A 2017-04-17 2017-04-17 Bactericidal composition containing metrafenone Withdrawn CN107006466A (en)

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CN101198254A (en) * 2005-06-21 2008-06-11 拜尔农科股份有限公司 Fungicide composition comprising a phosphorous acid derivative, a mandelamide type compound and a further fungicide compound
CN103053538A (en) * 2011-10-21 2013-04-24 深圳诺普信农化股份有限公司 Fungicide composition

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CN101198254A (en) * 2005-06-21 2008-06-11 拜尔农科股份有限公司 Fungicide composition comprising a phosphorous acid derivative, a mandelamide type compound and a further fungicide compound
CN103053538A (en) * 2011-10-21 2013-04-24 深圳诺普信农化股份有限公司 Fungicide composition

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CN107372532A (en) * 2017-08-11 2017-11-24 北京科发伟业农药技术中心 The bactericidal composition of the urethane of pyrrole containing tetrazolium

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