CN108013040A - The Herbicidal combinations of flumetsulam containing benzene and smart napropamide - Google Patents

The Herbicidal combinations of flumetsulam containing benzene and smart napropamide Download PDF

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Publication number
CN108013040A
CN108013040A CN201711297633.3A CN201711297633A CN108013040A CN 108013040 A CN108013040 A CN 108013040A CN 201711297633 A CN201711297633 A CN 201711297633A CN 108013040 A CN108013040 A CN 108013040A
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napropamide
smart
agent
active components
flumetsulam
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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
    • 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
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
    • 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
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
    • A01N37/38—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system
    • A01N37/40—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system
    • 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
    • A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
    • A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
    • A01N41/10—Sulfones; Sulfoxides
    • 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
    • A01N43/80—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 1,2
    • 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
    • A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
    • A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The present invention provides a kind of flumetsulam containing benzene and the synergistic herbicidal compositions of smart napropamide, it is characterized by comprising active components A and B, wherein, A is benzene flumetsulam and smart napropamide, B is bromoxynil octanoate, thiophene ketone sulphur is grand, one or more kinds of combinations in pyroxasulfone, ring sulphur ketone, the third pyrimidine acid of chlorine, the auxiliary agent that can be used in Pesticide formulation is further included, conventional pesticidal preparations are made, and applied to the unwanted plant of prevention.

Description

The Herbicidal combinations of flumetsulam containing benzene and smart napropamide
Technical field
The invention belongs to pesticides application technical field, is related to a kind of composition pesticide, specifically a kind of phonetic sulphur containing benzene The Herbicidal combinations of careless amine and smart napropamide, applied to preventing and kill off unwanted plant.
Background technology
In agricultural production process, it is not necessary to plant (weeds) serious, the target crop such as damage to crops, forest life occurs It is long, and influence undesirable vegetation plot (such as bare place, railway, highway, forest fire protection road, industrial sites, threshing ground) just Often use.Herbicide is to prevent and kill off the most economic, the quick and effective method that plant is not required.
Single herbicide is limited using easily developing immunity to drugs or preventing spectrum, can not solve well in produce reality not Need the harm of plant.Mixture herbicide, which has to expand, prevents spectrum, enhancing preventive effect, delays the advantages such as herbicide resistance, in life Become most popular application form in production practice.Herbicide especially with synergy, between each active principle of herbicide Interaction, makes combination aging fruit better than the theoretical summation of exclusive use effect, thus can play half work(of thing in actual use Effect again, is more welcome by user.
Benzene flumetsulam (saflufenacil) is a kind of selective herbicide of overseas enterprise's exploitation, belongs to protoporphyrinogen oxygen Change enzyme inhibitor, can be handled in weeds before seedling after seedling, be mainly used for preventing and kill off corn, wheat, soybean, cotton, rape, sorghum, beans A variety of broad leaved weeds in the crops such as class vegetables, fruit tree, nut fruits and bare place.CAS accession number is 372137-35-4.It is tied Structure formula is as follows：
Smart napropamide (napropamide-M) is also a kind of new herbicides of overseas enterprise's exploitation, is mainly used for preventing and kill off Grassy weed and broad leaved weed in the crop fields such as tobacco, watermelon, cotton, rape, garlic, beet.
Bromoxynil octanoate (bromoxynil octanoate), thiophene ketone sulphur grand (thiencarbazone-methyl), Pyroxasulfone, ring sulphur ketone (tembotrione), the third pyrimidine acid of chlorine (aminocyclopyrachlor) are equally foreign enterprises of state Various crop weeds are had good preventive effect by several broad spectrum weeding agent of industry exploitation.Above-claimed cpd may include agriculturally to make Various existence forms, such as salt, ester derivative.
The present invention by substantial amounts of formulation screening test research find, when benzene flumetsulam and essence napropamide composition with it is pungent Acylbromide cyanophenyl, thiophene ketone sulphur are grand, any group of one or more kinds of medicaments in pyroxasulfone, ring sulphur ketone, the third pyrimidine acid of chlorine During conjunction, surprising herbicidal effect being shown, that is, showing good synergistic effect, actual herbicidal effect is substantially better than individually The theoretical summation used, has very extensive application prospect in production.
The content of the invention
The present invention relates to synergistic herbicidal compositions, including active components A and B, the active components A is benzene flumetsulam With smart napropamide, the active ingredient B is bromoxynil octanoate, thiophene ketone sulphur is grand, pyroxasulfone, ring sulphur ketone, the third pyrimidine of chlorine One or more kinds of combinations in acid.In addition, further include the auxiliary agent that can be used in Pesticide formulation.
The composition can be especially good effect be used to prevent weeds in various useful crops, the useful crop Including but not limited to conventional breeding crop, genetically modified crops, asexually propagated crop and asexual propagation material, domesticating and cultivating it is wild Plant etc., especially suitable for Weeds in Turf, grassland pasture, orchard, wheat, tobacco, watermelon, cotton, rape, soybean, garlic, sweet tea Weeds in the crop fields such as dish, or for undesirable plants such as bare place, railway, highway, forest fire protection road, industrial sites, threshing grounds By growing location weeds in the block.
The instantiation that can be mentioned that can use the representative grassy weed of composition for preventing and controlling of the invention, broad-leaved miscellaneous for some Grass and nutgrass flatsedge, the example are not limited to specified genus kind.It should be noted that the invention is not limited in example in detail below, also Other unwanted plants can be extended in the same manner：
Including but not limited to following category or the broad leaved weed of section：Abutilon, Amaranthus, Portulaca, Acalypha, lamb's-quarters Category, pulse family, Moraceae, Polygonum, Stellaria, Euphorbia, Bedstraw, Descurainia, shepherd's purse category, Eclipta prostrata category, Viola, Xanthium, Veronica, pivots store category, Kochia, Myosoton, Senecio, Solanum, Lithospermum, lyrate hemistepta herb category, sandwort category, fly grass Category, ipomoea, Brassica genus, Urtica, mallow, Plantago, lespedeza, Ambrosia, Bidens, bitter fleabane category, it is small it is fluffy belong to, Sonchus, pearlwort, Datura, carpetweed, ox achyranthes chrysanthemum spp, black clover category, japanese bearbind genus, Hibiscus, galeopsis, Chrysanthemum harvest spp, Phytolacca, Vernonia, artemisia, Section of Genus Boehmeria, Wistaria, Humulus, lamium, Daubentonia, Cirsium, lettuce Mai Lepidium, thorn Lepidium, Commelina, Mazus, Prosopis, Salix, Acer, Elm；The grassy weed of following category： Echinochloa, knotgrass, setaria, Poa L., Avena, Panicum, lolium temulentum category, Brome, wild Panicum, amur foxtail category, rye Careless category, yard grass category, cogon, Brachiaria, speedwell category, ladder forage spp, the careless category of caput grass Shu, Wang, hard grass category, sandbur Belong to, Cynodon；The sedge weed of following category：Cyperus.
In order to solve the above-mentioned technical problem, the present invention is realised by adopting the following technical scheme：
Between medicament in present composition component A, between A and B can with arbitrary proportion mixture, usually a kind of activity into Content is divided to be higher than rest activity component, preferably mixing ratio is 100：1 to 1：100 or 50：1 to 1：50.
The present composition can be by the way that active ingredient 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, particle Agent, dispersible oil-suspending agent, microcapsule suspending agent, suspension emulsion, solvable pulvis, soluble granule etc..Typically contain 0.1 in preparation~ The active ingredient of the active ingredient of 95% weight, preferably 0.5~90% weight.
The auxiliary agent that can be used in Pesticide formulation includes but 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, it can add in mixture composition Add conventional agriculture fertilizer, medicament-fertilizer mixture is made.These auxiliary agents are all to commonly use in pesticidal preparations or allow the component used, have no spy Do not limit, one or more auxiliary agents may be selected and form, specific component and dosage are according to recipe requirements by simply testing Determine.
The production technology of the various application forms of composition belongs to existing known technology, and details are not described herein.
The present composition can use in a variety of ways, be such as watered spraying in a usual manner and use, or directly spread fertilizer over the fields or ditch Apply, or mix pesticide-clay mixture and spread fertilizer over the fields, early stage can be used before weeds emergence or after emergence.Dosage can change in relative broad range, And the situation depending on soil, application method, crop, weeds species to be prevented and kill off and seedling age size, weather conditions at that time And other factors.The present composition is usually applied with the dosage of 0.001~1.5kg mixture of active principles/hectare, more excellent Selection of land, is applied with the dosage of 0.01~0.8kg mixture of active principles/hectare.
Compared with prior art, the present invention have the following technical effect that：
1st, mixture composition has good synergistic effect, and application effect is substantially better than single dose theoretical effect summation, that is, has There is super superposition, dominant weed occurrence injury can be better controled over；
2nd, there is good complementarity in control of weeds spectrum between mixture composition active ingredient, prevention can be expanded very well Spectrum, synthesis effectively control various weeds occurrence injuries；
3rd, mixture composition has good synergistic effect, can reduce pharmaceutical use, reduces use cost and environment is dirty Dye, improves the security to crop.
Embodiment
The specific embodiment of the present invention is given below, 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 1：60% missible oil
Formula composition is：Active components A is 54%, and active ingredient B is 6%, emulsifying agent alkylphenol polyoxyethylene ether 5%, Emulsifying agent calcium dodecyl benzene sulfonate 4%, solvent xylene complements to 100%.
Preparation method is：All materials are put into batching kettle, stirring and dissolving is to fully transparent, after chemical examination is qualified, transfer It is filling to storage tank.
Embodiment 2：33% suspending agent
Formula composition is：Active components A is 3%, and active ingredient B is 30%, wetting agent fatty alcohol polyoxyethylene ether 4%, Dispersant is to methoxyl group fatty acyl amido benzene sulfonic acid sodium salt 3%, and antifreeze glycol 5%, thickener xanthans 0.3%, water is supplied To 100%.
Preparation method is：By in active ingredient and wetting agent, dispersant, antifreezing agent and water input stirred tank, it is sufficiently stirred Afterwards, material is pumped into sand mill and is fully ground, after the completion of grinding, is pumped into high-speed shearing machine, after adding thickener, into Row high speed shear, is made suspending agent after the completion of shearing.
Embodiment 3：72% water dispersible granules
Formula composition is：Active components A is 63%, and active ingredient B is 9%, wetting agent pull open powder 5%, the poly- carboxylic of dispersant Hydrochlorate 6%, disintegrant sodium sulphate 5%, adhesive polyvinyl alcohol 0.5%, filler attapulgite complement to 100%.
Preparation method is：By all materials after mixing, crush through airslide disintegrating mill, be uniformly mixed again, then, add Enter a certain amount of water to mediate this mixture, extruder grain, sieved through dry, that is, obtain water dispersible granules.
Embodiment 4：12% aqueous emulsion
Formula composition is：Active components A is 9%, and active ingredient B is 3%, solvent xylene 9%, solvent Solvesso 1004%, emulsifying agent aerosol-OT salt 3%, emulsifier polyoxyethylene sorbitan fatty acid ketone 5% is antifreeze Agent glycerine 4%, water complements to 100%.
Preparation method is：After active components A and B are fully dissolved with solvent, input emulsifying agent forms oil after being sufficiently stirred Phase；Antifreezing agent is added to the water dissolving, forms water phase；Water is mutually slowly added in oil phase, is sheared using high-speed shearing machine, you can Obtain aqueous emulsion.
Embodiment 5：24% microemulsion
Formula composition is：Active components A is 20%, and active ingredient B is 4%, solvent xylene 10%, solvent cyclohexanone 6%, emulsifying agent alkaryl phenol polyethenoxy ether phosphate 8%, emulsifying agent disecoctylmaleate sodium sulfonate 6% is antifreeze Agent propane diols 5%, water complements to 100%.
Preparation method is：After active components A and B are fully dissolved with solvent, put into emulsifying agent and antifreezing agent be uniformly mixed, Deionized water is eventually adding, carries out high speed shear, you can obtains microemulsion.
Embodiment 6：84% wettable powder
Formula composition is：Active components A is 14%, and active ingredient B is 70%, wetting agent dioctyl sodium sulphosuccinate 5%, dispersant calcium lignosulfonate 5%, filler kaolin complements to 100%.
Preparation method is：Active ingredient and each auxiliary agent are uniformly mixed, puts into mechanical disintegrating machine and just smash, afterwards Crushed through airslide disintegrating mill, remix uniformly, that is, wettable powder is made.
Embodiment 7：4% granule
Formula composition is：Active components A is 2%, and active ingredient B is 2%, wetting agent phenethyl phenol polyethenoxy ether 0.6%, dispersant naphthalenesulfonic acid-formaldehyde condensate 1.0%, colouring agent Viride Nitens (peacock green) 0.2%, filler bentonite is supplied To 100%.
Preparation method is：By all materials after mixing, add a certain amount of water to mediate this mixture, extruding is made Grain, sieves through dry, that is, obtains granule.
Embodiment 8：56% dispersible oil-suspending agent
Formula composition is：Active components A is 7%, and active ingredient B is 49%, emulsifying agent triphenyl vinyl phenol polyoxyethylene Ether 6%, emulsifying agent alkyl phenol formaldehyde resin polyoxyethylene ether 7%, dispersant styrene maleic anhydride copolymer 3%, thickener White carbon 2%, decentralized medium corn oil complement to 100%.
Preparation method is：By in active ingredient and emulsifying agent, dispersant and decentralized medium input stirred tank, it is sufficiently stirred Afterwards, it is pumped into high-speed shearing machine, carries out high speed shear, then pump and be fully sanded into sand mill, adds and increase after sand milling is qualified Thick dose, stir evenly up to dispersible oil-suspending agent.
Embodiment 9：32% microcapsule suspending agent
Formula composition is：Active components A is 8%, and active ingredient B is 24%, solvent xylene 10%, solvent O-phthalic Diethyl phthalate 7%, the more methylene benzene polyisocyanates 5% of oiliness capsule skin, water-based capsule skin hexamethylene diamine 4%, emulsifying agent alkylaryl gathers Oxypropylene polyoxyethylene ether 7%, dispersant EO-PO block polyethers 8%, thickener aluminium-magnesium silicate 0.3%, decentralized medium water is supplied To 100%.
Preparation method is：After active components A and B are fully dissolved with solvent, oiliness capsule skin is added, is sufficiently stirred to form oil Phase；It is poured into the water phase for being mixed with emulsifying agent and dispersant, carries out high speed shear, then add water-based capsule skin, stir evenly, Then raise temperature to 70 DEG C of heat preservation solidifications 2 it is small when, microcapsules are made, are eventually adding thickener, stir evenly up to microcapsule suspending agent.
Embodiment 10：40% suspension emulsion
Formula composition is：Active components A is 4%, and active ingredient B is 36%, solvent xylene 10%, emulsifying agent styrene Base phenol formaldehyde resin polyoxyethylene poly-oxygen propylene aether 5%, wetting agent alcohol ethoxylate 3%, three phenethyl of dispersant Phenol polyethenoxy ether phosphate 4%, antifreeze glycol 5%, thickener aluminium-magnesium silicate 0.2%, water complements to 100%.
Preparation method is：Active ingredient B, wetting agent, dispersant, antifreezing agent and water are put into stirred tank, are sufficiently stirred Afterwards, material is pumped into sand mill and is fully ground, suspending agent is made；After active components A is fully dissolved with solvent with breast Agent is uniformly mixed, and is then added to it in Manufactured suspending agent under the conditions of high speed shear, adds thickener, is carried out high Speed shearing, is made suspension emulsion after the completion of shearing.
Application effect example：
1st, test method
Reference《The 4th part of NY/T 1155.4-2006 farm-chemical indoor determination test rules herbicide：Determination of activity tries Test cauline leaf spray-on process》Carry out.
Experiment, which is located under greenhouse experiment, to be carried out.Choose several generations in grassy weed, broad leaved weed and sedge weed Table weeds thorn bur, Amaranthus retroflexus, green bristlegrass, Phytolacca acinosa, clearvers, artemisiifolia, barnyard grass, the rhizome of nutgrass flatsedge, lady's-grass and wild oat are confession Try weeds.The rhizome of nutgrass flatsedge takes underground rhizome breeding from field；Remaining several weeds breeds from field collection weed seed.
It will be quantitatively filled at the 4/5 of basin alms bowl for examination soil, using basin alms bowl bottom infiltrating irrigation mode, soil is moistened completely to full And state.Choose thorn bur that is full, uniform, having no mechanical damage, Amaranthus retroflexus, green bristlegrass, Phytolacca acinosa, clearvers, artemisiifolia, barnyard grass Grass, lady's-grass or wild oat seed, by its uniform broadcasting in the round plastic nutritive cube surface of a diameter of 30cm, 30~40 are broadcast per basin Grain, earthing 1.0cm.The rhizome of nutgrass flatsedge takes underground rhizome (long-rhizome such as 3cm) from field, and 10 sections are planted per basin.After planting with basin alms bowl Bottom infiltrating irrigation mode moisturizing, makes soil moisten completely to saturation state.When length is to 2~3 leaf phase, per 30 plants of basin final singling.Treat weeds When length is to 3~4 leaf phase, liquid is sprayed with hand micro-sprayer, spouting liquid keeps soil wet often to handle 60mL after medicine Profit.Often processing sets 4 repetitions, if blank control is made in the processing without medicament.After processing after liquid natural air drying, temperature is moved into Indoor cellar culture observation.
21d after chemicals treatment, investigation method investigation records activity of weeding (is counted and surveys) using absolute value, with weighing each processing weeds Upper part fresh weight, calculates actual preventive effect, and is evaluated and acted synergistically according to Colby methods.Referring to COLBY, S.R.：" calculate herbicide The collaboration of combination and Antagonistic reaction ", Weeds 15, p.20~22,1967：
According to survey data, the actual preventive effect of each processing is calculated by formula (1), unit is percentage (%), result of calculation Retain 2 significant digits.
In formula：
E-actual preventive effect；
C-control weeds aerial part fresh weight；
T-processing weeds aerial part fresh weight.
Colby methods：Theoretical preventive effect (it is expected that preventive effect) E of Mixed Pharmacy0(2) formula calculates：
In formula：
Actual preventive effect when 1 dosage of X-herbicide is P；
Actual preventive effect when 2 dosage of Y-herbicide is Q；
Actual preventive effect when 3 dosage of Z-herbicide is R；
E01 dosage of-herbicide is that 2 dosage of P+ herbicides is theoretical preventive effect when 3 dosage of Q+ herbicides is R, i.e. mixture is removed The expection preventive effect of careless agent；
E-herbicide 1,2 and 3 presses actual preventive effect during different ratio mixture；
As E ＞ E0When, i.e., should if the actual preventive effect of Mixed Pharmacy exceedes the theoretical preventive effect (it is expected that preventive effect) calculated Combination just has super superposition, that is, acts synergistically.
2nd, result of the test
Result of the test refers to table 1~10, it is seen then that active components A (benzene flumetsulam and smart napropamide) with selected from activity into It is actual after the medicament mixture of point B (ring sulphur ketone, pyroxasulfone, thiophene ketone sulphur are grand, the third pyrimidine acid of chlorine and bromoxynil octanoate etc.) Preventive effect is all higher than theoretical preventive effect (it is expected that preventive effect), illustrates that active components A has with the medicament mixture in active ingredient B and cooperates with work With.
The synergy effect of 1 benzene flumetsulam of table, smart napropamide with ring sulphur ketone mixture to thorn bur
2 benzene flumetsulam of table, smart napropamide and synergy effect of the pyroxasulfone mixtures to Amaranthus retroflexus
3 benzene flumetsulam of table, smart napropamide and synergy effect of the grand mixture of thiophene ketone sulphur to green bristlegrass
4 benzene flumetsulam of table, smart napropamide and synergy effect of chlorine the third pyrimidine acid mixture to Phytolacca acinosa
5 benzene flumetsulam of table, smart napropamide and synergy effect of the bromoxynil octanoate mixture to clearvers
6 benzene flumetsulam of table, smart napropamide and synergy effect of the ring sulphur ketone mixture to artemisiifolia
7 benzene flumetsulam of table, smart napropamide and synergy effect of chlorine the third pyrimidine acid potassium salt mixture to barnyard grass
8 benzene flumetsulam of table, smart napropamide and synergy effect of the grand mixture of thiophene ketone sulphur to the rhizome of nutgrass flatsedge
9 benzene flumetsulam of table, smart napropamide and synergy effect of the pyroxasulfone mixtures to lady's-grass
10 benzene flumetsulam of table, smart napropamide and synergy effect of the grand mixture of thiophene ketone sulphur to wild oat

Claims (5)

1. a kind of herbicidal composition, it is characterised in that including active components A and B.
2. herbicidal composition as claimed in claim 1, it is characterised in that the active components A for benzene flumetsulam and Smart napropamide.
3. herbicidal composition as claimed in claim 1, it is characterised in that the active ingredient B is bromoxynil octanoate, thiophene Ketone sulphur is grand, one or more kinds of combinations in pyroxasulfone, ring sulphur ketone, the third pyrimidine acid of chlorine.
4. the herbicidal composition as described in claim 1,2 or 3, it is characterised in that in addition to active components A and B, further include The auxiliary agent that can be used in Pesticide formulation.
5. the herbicidal composition as described in claim 1,2,3 or 4, it is characterised in that it is unwanted to be applied to prevention Plant.
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