CN105557708A - Weeding composition - Google Patents
Weeding composition Download PDFInfo
- Publication number
- CN105557708A CN105557708A CN201410548642.5A CN201410548642A CN105557708A CN 105557708 A CN105557708 A CN 105557708A CN 201410548642 A CN201410548642 A CN 201410548642A CN 105557708 A CN105557708 A CN 105557708A
- Authority
- CN
- China
- Prior art keywords
- herbicidal combinations
- bentazone
- benzene azoles
- azoles humulone
- chlorine sodium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a weeding composition and particularly relates to a weeding composition used for preventing and removing weeds in corn fields. The weeding composition is prepared from three active ingredients including topramezone, MCPA-Na and bentazone at the weight percentage of (1-l0):(1-100):(1-100). The three ingredients have different weeding mechanisms, and the composited weedicide combines the advantages of three single weedicides and reaches a better weeding effect; compared with single-weedicide usage, a remarkable synergistic interaction effect is achieved, the dosage is reduced, cost is reduced, and higher safety is achieved; the weeding spectrum is enlarged, the weeding composition has an excellent effect on grassy weeds and also has a good control effect on malignant broadleaf weeds and cyperaceae weeds, and meanwhile weedicide resistance generated when single weedicides are used can be relieved.
Description
Technical field
What the present invention relates to is a kind of Herbicidal combinations, particularly a kind of Herbicidal combinations for Control Weeds in Maize Field.
Background technology
In plant husbandry, control suppresses plant growth and the weeds causing output to reduce and cover crop are very important.In order to reduce the loss caused due to the weeds in crop genetics, as grown difference or crop yield reduces, developing some and can effectively prevent and treat described weeds and herbicidal active component to crop safety.Up to the present, the registered and weeds for preventing and treating some crop of the weed killer herbicide developed in a large number are had.Weed killer herbicide for preventing and treating the weeds in specific crop genetics should have sufficiently high activity of weeding and broad herbicidal spectrum, and response environment and crop safe enough.But not every weed killer herbicide can meet above-mentioned requirements completely.
The increase activity of weeding the most often used and the method for the herbicidal spectrum widening existing weed killer herbicide are the herbicidal active compounds mixing two or more with different activity of weeding.If mix two or more herbicidal active compoundses, the herbicide action outstanding than independent herbicide application may be demonstrated.When the effect of the mixture of two or more compositions is greater than the expection effort levels of each composition, we are referred to as " synergistic effect ".But the synergistic effect existed in the Herbicidal mixture of two or more herbicidal active compoundses described is only visible in some circumstances.Due to the difference of the aspects such as herbicidal performance, absorption ratio, transfer, metabolism, activity of weeding singly the executing lower than each composition of most of mixture." antagonism " represents herbicide action singly the executing lower than each composition of such situation i.e. mixture of two or more herbicidal active compoundses." addition " represents that the herbicide action of such situation i.e. mixture of two or more herbicidal active compoundses is identical with singly executing of each composition.
The English common name Topramezone of benzene azoles humulone, chemical name [3-(4,5-dihydro-3-isoxazolyl)-4-sulfonyloxy methyl-2-methylbenzene] 5-hydroxyl-1-methyl isophthalic acid H-pyrazoles-4-base) ketone, its chemical structural formula is:
Benzene azoles humulone is cauline leaf process inner-adsorption conduction-type herbicide after a kind of novel pyrazole quinoline ketone seedling, the mechanism of action suppresses 4-medical midbodies of para (ortho)-hydroxybenzoic acetone acid esters dual oxide enzyme (HPPD) in plastoquinone biosynthesis, the synthesis of remote-effects carotenoid, under illumination condition, the synthesis of interference chloroplast and function, cause serious chlorosis albefaction, necrosis, plant is usually dead after 14 days in process.Due to chlorophyllous oxidative degradation, particularly the vitellarium poisoning symptom of susceptible weeds overground part is the most obvious.Susceptible weeds by blade, root absorption, and in plant upwards and downward Bidirectional Conduction, and to stop growing very soon.There is albefaction poisoning symptom in 2-5 days in weeds acrial part, the poisoning symptom of growing point, blade and vein the most obvious after administration, and organizing of albefaction is downright bad gradually, and whole plant is withered, different according to weather environment, needs about 10-15 days.Benzene azoles humulone is very safe to corn, and compare with responsive weeds, the drug resistance of corn is because it is low to the sensitivity of target enzymes, absorb and conductive quantity few, accretion rate is fast.
Benzene azoles humulone effectively can kill annual gramineae and broad leaved weed and sedge weed, as lady's-grass, barnyard grass, green foxtail, Brachiaria Griseb, eleusine indica, wild millet, hill pearl millet, sandbur, difformed galingale herb, cyperus iria, amaranth, knotweed, field bindweed, field thistle, lamb's-quarters, Siberian cocklebur, black nightshade, piemarker, datura, weasel hemp nettle, german chamomile, artemisiifolia, wild mustard, cicely, thorn bud fruit, bristle sting luxuriant chrysanthemum, annual mercury, South America beggarweed, tassel flower, root of bidentate achyranthes chrysanthemum, pseudoacid slurry, dayflower, Brittle Falsepimpernel Herb, Mazus japonicus.
Methoxone or derivatives thereof is phenoxy acetic acid class selectivity Uptake and translocation hormone herbicide, and Yi Weigen and leaf portion absorb and conduction, can destroy the conducting tissue of dicotyledon, make to grow and be interfered, cauline leaf distortion, basal part of stem expands thicker or cracking, and swollen splitting is gone rotten and dead.Applicable paddy rice can prevent and kill off most of sedge weed and broad leaved weed.2 first 4 chlorine derivatives are 2 first 4 chlorine isopropyl acids, Thistrol, Thistrol butyl ester, the different monooctyl ester of 2 first 4 chlorine, 2 first 4 chloroethene thioesters, 2 first 4 chlorine thioethyl ester, 2 first 4 chlorine sodium salts, 2 first 4 chlorine sylvite, 2 first 4 chlorine isopropyl amine salts.
Bentazone (Bentazone), chemical name is: 3-isopropyl-(1H)-benzo-2,1,3-thiadiazine-4-ketone-2,2-dioxide, and its molecular structural formula is:
Bentazone is a kind of contact killing type, selectivity herbicide after seedling, and seedling stage processes, and is worked by blade contact.When dry land uses, be transmitted to inhibited photosynthesis in chloroplast by blade infiltration, when paddy field uses, also by Root Absorption, be transmitted to cauline leaf, hinder weeds photosynthesis and water metabolism, make physiological dysfunction and dead.Bentazone is mainly used in preventing and kill off the sub-weeds of double leaf, paddy field nutgrass flatsedge and other single leaf weeds, is therefore good herbicides for use in paddy.Also can be used for the dry crop weedings such as wheat class, soybean, cotton, peanut, as Monochoria vaginalis, needle spikesedge herb, convexutricle sedge herb, Herba Cyperi Glomerati, clearvers, knotweed grass, flat sugarcane bar grass, wild water chestnut, amaranth, lamb's-quarters, Drilgrass etc.
At present, application number is that the patent of CN201110347624.7 discloses " a kind of herbicidal composition; comprise major ingredient benzene azoles humulone; it is characterized in that: also comprise secondary material; described pair material is atrazine, fluroxypyr, bentazone, Dicamba, nicosulfuron, mesotrione, 2; 4-dichlorophenoxyacetic acid, 2; combination of one or more in 4-dichlorophenoxyacetic acid butyl ester, the different monooctyl ester of 2,4-dichlorophenoxyacetic acid, Garagard, 2 first 4 chlorine sodium salts, formamido group Sulfometuron Methyl, Acetochlor in its claim 1.Although " which includes the combination of benzene azoles humulone, bentazone and 2 first 4 chlorine; in the specification of this patent, any embodiment and experimental data do not show that this combination is preventing and kill off the effect on corresponding weeds; and; we know; whether the preventive effect of composite rear medicament is that gain can not go to infer by convention, and whether must prove it is by experiment gain.In addition, from the specification of this patent, we also can not directly obtain or infer whether this combination is preventing and kill off corresponding weeds for gain effect.
Therefore, the compound drug of a kind of benzene azoles humulone, methoxone and bentazone that aims to provide of the present invention prevent and kill off field grassy weed, broad leaved weeds and sedge weed time the technical scheme of gain effect that produces not disclosed by this patent.
Summary of the invention
The present invention seeks to solve the problems of the technologies described above, the invention provides a kind of Herbicidal combinations, said composition, by benzene azoles humulone, 2 first 4 chlorine sodium and bentazone are carried out ternary built, makes obtained new compositions achieve gain effect in the control of preventing and kill off broad leaved weed, grassy weed and sedge weed.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Herbicidal combinations, comprises
Three kinds of active component benzene azoles humulones, 2 first 4 chlorine sodium and bentazones,
Wherein benzene azoles humulone, 2 first 4 chlorine sodium and bentazone weight proportion scope are 1 ~ 10:1 ~ 100:1 ~ 100.
Further, described benzene azoles humulone, 2 first 4 chlorine sodium and bentazone weight proportion scope are 1 ~ 10:1 ~ 50:1 ~ 50.
Further, described benzene azoles humulone, 2 first 4 chlorine sodium and bentazone weight proportion scope are 1 ~ 10:1 ~ 20:1 ~ 20.
Further, benzene azoles humulone, 2 first 4 chlorine sodium and bentazone weight proportion scope are 1 ~ 10:1 ~ 10:1 ~ 10.
Further, benzene azoles humulone, 2 first 4 chlorine sodium and bentazone weight proportion scope are 1 ~ 5:1 ~ 5:1 ~ 5.
A kind of Herbicidal combinations, comprises active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone, filler and/or surfactants.
A kind of Herbicidal combinations, described active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone quality sum account for the 5%-90% of Herbicidal combinations.
A kind of Herbicidal combinations, described active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone quality sum account for the 10%-80% of Herbicidal combinations.
A kind of Herbicidal combinations, described active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone quality sum account for the 20%-60% of Herbicidal combinations.
A kind of Herbicidal combinations, described active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone quality sum account for the 30%-50% of Herbicidal combinations.
A kind of Herbicidal combinations, formulation is wetting powder, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspension emulsion, water dispersible granules, soluble granula, aqua, microcapsule suspension-suspendinagent agent, ultra low volume liquids.
A kind of Herbicidal combinations is preventing and kill off the application of broad-leaved section weeds, sedge weed, the undesirable plant of grassy weed.
Herbicidal combinations is preventing and kill off the application in useful plant field broad-leaved section weeds, sedge weed, grassy weed, and described useful plant is wheat, barley, rye, rice, corn, sugarcane, Chinese sorghum, soybean, peanut, sunflower, sugar beet, potato, cotton, rape.
Control a method for undesirable plant, comprising: (i) before undesirable plant germination (before bud); (ii) after undesirable plant germination (after bud), or (iii) (i) and (ii) time, the Herbicidal combinations described in herbicidally effective amount is applied on the growth place of undesirable plant or leaf or stem.
Detailed Description Of The Invention
The invention provides a kind of Herbicidal combinations, said composition is passed through benzene azoles humulone, 2 first 4 chlorine sodium and bentazone carry out ternary built, make obtained composition to broad-leaved section weeds, sedge weed, the effect of grassy weed display Herbicidal synergic, particularly belongs to (Alopecurusspp.) to amur foxtail, knotgrass (Digitariaspp.), Echinochloa (Echinochloaspp.), Sprangletop (Leptochloaspp.), Panicum (Panicumspp.), phalaris arundinacea (Phalarisspp.), Poa L. (Poaspp.), setaria (Setariaspp.) and Cyperus (Cyperus), abutilon (Abutilonspp.), Amaranthus (Amaranthusspp.), Chenopodium (Chenopodiumspp.), Stellaria (Stellariaspp.), Veronica (Veronicaspp.), Eclipta prostrata belongs to (Ecliptaspp.), clearvers (Galiumaprarine) demonstrates the herbicidal activity of synergy.
The invention still further relates to a kind of method controlling undesirable plant, comprising: (i) before undesirable plant germination (before bud); (ii) after undesirable plant germination (after bud), or (iii) (i) and (ii) time, the Herbicidal combinations described in herbicidally effective amount is applied on the growth place of undesirable plant or leaf or stem
Weed killer herbicide benzene azoles humulone, 2 first 4 chlorine sodium, bentazone can or be used successively simultaneously.Whether weed killer herbicide benzene azoles humulone, 2 first 4 chlorine sodium, bentazone are combined or are separately prepared and use and which kind of order to use unimportant when separate administration with.
Surprisingly, Herbicidal combinations of the present invention is to good than desired by the activity of weeding of single compound of undesirable plant activity of weeding.Namely the synergy of benzene azoles humulone, 2 first 4 chlorine sodium, bentazone causes with the activity (synergistic function) of synergistic effect raising to undesirable plant.Therefore, Herbicidal combinations of the present invention can use with lower rate of application based on one-component and realize the herbicidal effect suitable with one-component.In addition, the activity of weeding before Herbicidal combinations of the present invention provides good bud and after bud.And Herbicidal combinations of the present invention demonstrates good crop compatibility.
In Herbicidal combinations of the present invention, benzene azoles humulone, 2 first 4 chlorine sodium and bentazone weight proportion scope are 1 ~ 10:1 ~ 100:1 ~ 100, preferably 1 ~ 10:1 ~ 50:1 ~ 50,1 ~ 10:1 ~ 20:1 ~ 20,1 ~ 10:1 ~ 10:1 ~ 10,1 ~ 5:1 ~ 5:1 ~ 5.Therefore, in method of the present invention and purposes, benzene azoles humulone, 2 first 4 chlorine sodium and bentazone are used in these weight ratios.
Herbicidal combinations of the present invention is applicable to a large amount of undesirable plant of control, comprise monocotyledon weed, especially annual weed is as grassy weed, comprise Avena (Avenaspp.), amur foxtail belongs to (Alopecurusspp.), false Agrostis (Aperaspp.), Brachiaria (Brachiariaspp.), Brome (Bromusspp.), knotgrass (Digitariaspp.), Lolium (Loliumspp.), Echinochloa (Echinochloaspp.), Sprangletop (Leptochloaspp.), genus fimbristylis (Fimbristylisspp.), Panicum (Panicumspp.), phalaris arundinacea (Phalarisspp.), Poa L. (Poaspp.), setaria (Setariaspp.), and Agropyron (Agropyron), Cynodon (Cynodon), cogon (Imperata) and the sorghum in perennial kind.
Herbicidal combinations of the present invention is also applicable to control a large amount of broadleaf weed, especially broad leaved weed, comprises abutilon (Abutilonspp.), Amaranthus (Amaranthusspp.), Chenopodium (Chenopodiumspp.), crowndaisy chrysanthemum belongs to (Chrysanthemumspp.), galium (Galiumspp.), Ipomoea (Ipomoeaspp.), Kochia (Kochiaspp.), lamium (Lamiumspp.), Matricaria (Matricariaspp.), ipomoea (Pharbitisspp.), Polygonum (Polygonumspp.), chrysanthemum harvest spp (Sidaspp.), sinapsis alba belongs to (Sinapisspp.), Solanum (Solanumspp.), Stellaria (Stellariaspp.), Veronica (Veronicaspp.), Eclipta prostrata belongs to (Ecliptaspp.), Daubentonia (Sesbaniaspp.), Aeschynomenespp. with Viola (Violaspp.), the annual weed such as Xanthium (Xanthiumspp.), and japanese bearbind belongs to (Convolvulus), Cirsium (Cirsium), the perennial weeds such as Rumex (Rumex) and artemisia (Artemisia).
Herbicidal combinations of the present invention is also applicable to control annual and perennial sedge weed in a large number, comprises Cyperus (cyperusbrevifoliusH.), yellow clever nutgrass flatsedge (CyperusmicroirisSteud), cyperus iria (CyperusiriaL.) etc.
Herbicidal combinations of the present invention is adapted at preventing and kill off undesirable plant in useful plant.Herbicidal combinations of the present invention is adapted at preventing and kill off undesirable plant growth in following crop usually: Cereal is if wheat (Triticumaestivum), corn (Zeamays), Chinese sorghum, rice are as paddy rice (Oryzasativa); Sugarcane; Beans (Legumes) is as soybean (Glycinemax.); Peanut (Arachishypogaea); Cruciferae is as rape (Brassicanapus); Other broad leaf crops, such as, comprise sunflower, cotton, flax, linseed, sugar beet, potato and tomato.
Herbicidal combinations of the present invention is particluarly suitable for the growth of preventing and kill off undesirable plant in wheat, barley, rye, rice, corn, sugarcane, Chinese sorghum, soybean, peanut, sunflower, sugar beet, potato, cotton rape.
Herbicidal combinations of the present invention is particularly suitable for being applied in wheat, barley, rice, corn, Chinese sorghum, sugarcane, soybean, rape.
Herbicidal combinations of the present invention can be used in a usual manner.Comprise spraying, atomization, dusting, broadcast sowing or water.Use type and under any circumstance should guarantee that inventive compound obtains best distribution.
Herbicidal combinations of the present invention can before undesirable plant germination (before bud), among or after undesirable plant germination (after bud) use.When being used in crop by composition of the present invention, they are used before or after can emerging with crops after sowing.Herbicidal combinations of the present invention can also be used before crop seeding.
Under any circumstance, benzene azoles humulone, 2 first 4 chlorine sodium and bentazone can or be used successively simultaneously.
Rate of application can change in wide boundary, and depends on that soil property, application process are (before bud or after bud; Seed dressing; Be applied in seed furrow; No-tillagely to use), the plant of effect, the weeds that need control, weather conditions, and other factors of being arranged by application process, specific active ingredient combinations, time of application and target.In practicing, provide about 0.001kg/ha-1.00kg/ha, the rate of application of the active component of preferred 0.01kg/ha-0.075kg/ha is suitable.
Herbicidal combinations of the present invention jointly or respectively can be converted into conventional formulation, such as wetting powder, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspension emulsion, water dispersible granules, soluble granula, aqua, microcapsule suspension-suspendinagent agent, ultra low volume liquids.Described preparation also comprises filler and/or surfactant.
Suitable liquid filling agent has: aromatic compounds, such as dimethylbenzene, toluene or Fluhyzon; Chlorinated aromatic hydrocarbons and chlorinated aliphatic hydrocarbons, such as chlorobenzene, vinyl chloride or carrene; Aliphatic hydrocarbon, such as cyclohexane or paraffin, as mineral oil fractions, mineral oil and vegetable oil; Alcohols, such as butanols or ethylene glycol and ether thereof and ester; Ketone, such as acetone, methyl ethyl ketone, methyl iso-butyl ketone (MIBK) or cyclohexanone; Intensive polar solvent, such as dimethyl formamide and dimethyl sulfoxide (DMSO), Yi Jishui.
Suitable solid-filling agent is: the natural minerals of such as ammonium salt and pulverizing, such as kaolin, clay, talcum, chalk, quartz, attapulgite, montmorillonite or diatomite; With the synthetic mineral pulverized, such as high dispersive silica, aluminium oxide and silicate; The solid carrier being applicable to granule is: such as pulverize and the natural crystal of classification, such as calcite, marble, float stone, sepiolite and dolomite, and the synthesis particle of inorganic and organic powder, and the particle of organic material (such as sawdust, coconut husk, corncob and tobacco rods).
Suitable surfactant is: alkylnaphthalene sulfonate, two (alkyl) naphthalenesulfonate formaldehyde condensation compound, naphthalene sulfonic acid-formaldehyde condensation product, alkylphenol-polyethenoxy based phosphates, alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, alkylphenol polyoxyethylene, castor oil ethylene oxide adduct, ethylene oxide-propylene oxide block copolymer, alkylphenol polyoxyethylene formaldehyde condensation products, octylphenol polyethylene oxyethylene group ether sulfate and methylcellulose.
Suitable thickener, such as xanthans.
Suitable antifreezing agent is ethylene glycol, propane diols, urea or glycerine such as.
Suitable adhesive is polyvinylpyrrolidone, polyvinyl alcohol or tylose such as.
In Herbicidal combinations of the present invention, active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone quality sum account for the 5%-90% of Herbicidal combinations, preferred 10%-80%, more preferred 20%-60%, more preferably 30%-50%.
The present invention compared with prior art has following beneficial effect:
The present invention relates to a kind of ternary built herbicidal composition containing benzene azoles humulone, methoxone and bentazone, wherein three kinds of component mechanisms are different, medicament after composite combines the advantage of three kinds of single doses, reach better herbicidal effect, use relative to single dose and binary combination and there is obvious synergistic function, reduce dosage, reduce cost and safer; Widen herbicidal spectrum, except to except grassy weed excellent effect, all have better control efficiency to pernicious broad leaved weed, sedge weed; The pesticide resistance because using single dose to produce can be slowed down simultaneously.
Embodiment
Example of formulations
Embodiment 1: wetting powder
Benzene azoles humulone 1%
2 first 4 chlorine sodium 5%
Bentazone 10%
Sodium butylnaphthalenesulfonate (wetting agent) 5%
Sodium metnylene bis-naphthalene sulfonate (dispersant) 5%
White carbon (filler) 10%
Kaolin (filler) complements to 100%
Mix entering in blender after above-mentioned formula in proportion coarse crushing, more namely obtain wetting powder after air-flow crushing.
Embodiment 2: suspension emulsion
Benzene azoles humulone 5%
2 first 4 chlorine sodium 15%
Bentazone 30%
Methyl oleate 10%
Ethoxylated castor oil (emulsifier) 5%
To methoxyl group fatty acyl amido benzene sulfonic acid sodium salt (wetting agent) 5%
Alkylphenol polyoxyethylene formaldehyde condensation products sulphate (dispersant) 5%
Aluminium-magnesium silicate (thickener) 1%
Organosilicon (defoamer) 0.1%
Glycerine (antifreezing agent) 5%
Ionized water (filler) complements to 100%
Bentazone is dissolved in methyl oleate, adds ethoxylated castor oil, obtain the oil phase of bentazone;
Each components such as 2 first 4 chlorine sodium+benzene azoles humulone, wetting agent, dispersant are mixed in proportion, then adds in sand mill and grind, prepare the suspended phase of 2 first 4 chlorine sodium+benzene azoles humulones;
Oil phase containing bentazone is added in the suspended phase containing 2 first 4 chlorine sodium+benzene azoles humulones, obtains suspended emulsion.
Embodiment 3: water-dispersible granules
Benzene azoles humulone 5%
2 first 4 chlorine sodium 20%
Bentazone 20%
Lauryl sodium sulfate (wetting agent) 4%
Polycarboxylate (dispersant) 4%
Sodium chloride (disintegrant) 1%
Polyethylene glycol (binding agent) 1%
Kaolin (filler) complements to 100%
By above-mentioned formula dry pulverization process, granulation, drying, the obtained water-dispersible granules of screening preparation in proportion.
Embodiment 4 aqueous emulsion
Benzene azoles humulone 10%
2 first 4 chlorine sodium 5%
Bentazone 10%
1-METHYLPYRROLIDONE (solvent) 10%
Castor oil polyoxyethylene ether (emulsifier) 5%
Neopelex (emulsifier) 5%
Deionized water (filler) complements to 100%
By above-mentioned formula Central Plains medicine, solvent, emulsifiers dissolve uniformly oil phase; Under high velocity agitation, by oil phase and the obtained aqueous emulsion of aqueous phase mixing.
Embodiment 5: water-soluble granule
Benzene azoles humulone 1%
2 first 4 chlorine sodium 20%
Bentazone 30%
Sodium butylnaphthalenesulfonate (wetting agent) 4%
Sodium lignin sulfonate naphthalenesulfonic acid-formaldehyde condensate (dispersant) 5%
Sucrose (filler) complements to 100%
By above-mentioned formula dry pulverization process, granulation, drying, the obtained water-soluble granule of screening preparation in proportion.
Embodiment 6 missible oil
Benzene azoles humulone 1%
2 first 4 chlorine sodium 5%
Bentazone 20%
Ethoxylated castor oil (emulsifier) 5%
Calcium dodecyl benzene sulfonate (emulsifier) 3%
Dimethyl sulfoxide (DMSO) (solvent) complements to 100%
Mentioned component is proportionally prepared, stirs and obtain homogeneous phase.
Embodiment 7
Benzene azoles humulone 20%
2 first 4 chlorine sodium 55%
Bentazone 25%
Above-mentioned active component is mixed in proportion.
Above embodiment proportioning is weight per distribution ratio.
Biological test example
When the effect of active compound combinations exceedes the summation of the effect when each reactive compound is used separately, there is synergistic function.The predictive role of the particular combination of three kinds of reactive compounds can use so-called " Colby formula " (see S.R.Colby, " CalculatingSynergisticandAntagonisticResponsesofHerbicid eCombinations ", Weeds1967,15,20-22) calculate as follows: if
A is the activity when using the reactive compound A that consumption is mppm for mg/ha or concentration; Be expressed as the percentage accounting for untreated control;
B is the activity when using the reactive compound B that consumption is nppm for ng/ha or concentration, is expressed as the percentage accounting for untreated control;
C is the activity when using the reactive compound C that consumption is hppm for hg/ha or concentration, is expressed as the percentage accounting for untreated control;
E
0that expection during B and C is active when use consumption for m, n, hg/ha or concentration are the reactive compound A of m, n, hppm,
E
0=A×B×C/(100×
（N-1)）
N is 3;
If the active E of actual observation is greater than the active (E of expection
0), so said composition super add and, namely there is synergistic effect.
Inventor is by a large amount of screening tests, the different ratio of benzene azoles humulone, 2 first 4 chlorine sodium and bentazone test and preventive effect analysis have been carried out a large amount of, find in certain ratio range, the Herbicidal combinations obtained has synergistic effect, and be not only the simple addition of three kinds of medicaments, be illustrated with following biologicall test example.
Controlling experiment to corn weeds in field:
Test method:
Medicament adopts now with the current mode.In 10*10cm plastic basin, using the soil in the corn field not using weed killer herbicide as culture soil.The barnyard grass (Echinochloacrusgalli (L.) Beauv.) that upper one year was gathered between corn field, moleplant seed (Leptochloachinensis (L.) Nees), difformed galingale herb (CyperusdifformisL.), firefly Lin (ScirpusjuncoidesRoxb.), flat stalk Fischer grass (ScirpusplaniculmisFr.Schmidt), wild arrowhead (Sagittariatrifoliavar.sinensis), rhizoma alismatis (Alismaplantago-aquaticaLinn.), Monochoria vaginalis (Monochoriapauciflora(Bl.) Kunth.), evenly soil surface is sprinkling upon after the seed immersion of pondweed (Potamogetonfranchetii), 3-4 leaf phase size is grown to Deng it.Then spray benzene azoles humulone, bentazone, 2 first 4 chlorine sodium, bentazone+2 first 4 chlorine sodium, benzene azoles humulone+bentazone, benzene azoles humulone+2 first 4 chlorine sodium respectively, ternary built medicament of the present invention, then carries out observation analysis.
Spray medicine after 3 weeks to barnyard grass (Echinochloacrusgalli (L.) Beauv.), moleplant seed (Leptochloachinensis (L.) Nees), difformed galingale herb (CyperusdifformisL.), firefly Lin (ScirpusjuncoidesRoxb.), flat stalk Fischer grass (ScirpusplaniculmisFr.Schmidt), wild arrowhead (Sagittariatrifoliavar.sinensis), rhizoma alismatis (Alismaplantago-aquaticaLinn.), Monochoria vaginalis (Monochoriapauciflora(Bl.) Kunth.), the investigation result of the survival rate of pondweed (Potamogetonfranchetii):
From above table, the present invention can be used for control of maize field broad leaved weed, grassy weed and sedge weed in order to the composition of Control Weeds in Maize Field.Herbicidal combinations of the present invention is due to three kinds of component mechanisms differences, and the composite rear advantage in conjunction with three kinds of single doses, reaches better herbicidal effect, uses have obvious synergistic effect relative to single dose; Reduce dosage, reduce peasant's drug cost and safer; Expand herbicide spectrum, to except to except grassy weed excellent effect, also have better control efficiency to pernicious broad leaved weed, sedge weed.
Claims (14)
1. a Herbicidal combinations, is characterized in that: comprise
Three kinds of active component benzene azoles humulones, 2 first 4 chlorine sodium and bentazones,
Wherein benzene azoles humulone, 2 first 4 chlorine sodium and bentazone weight proportion scope are 1 ~ 10:1 ~ 100:1 ~ 100.
2. Herbicidal combinations according to claim 1, is characterized in that: benzene azoles humulone, 2 first 4 chlorine sodium and bentazone weight proportion scope are 1 ~ 10:1 ~ 50:1 ~ 50.
3. Herbicidal combinations according to claim 1, is characterized in that: benzene azoles humulone, 2 first 4 chlorine sodium and bentazone weight proportion scope are 1 ~ 10:1 ~ 20:1 ~ 20.
4. Herbicidal combinations according to claim 1, is characterized in that: benzene azoles humulone, methoxone and bentazone weight proportion scope are 1 ~ 10:1 ~ 10:1 ~ 10.
5. Herbicidal combinations according to claim 1, is characterized in that: benzene azoles humulone, 2 first 4 chlorine sodium and bentazone weight proportion scope are 1 ~ 5:1 ~ 5:1 ~ 5.
6. Herbicidal combinations according to claim 1, comprises active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone, filler and/or surfactants.
7. Herbicidal combinations according to claim 1, is characterized in that: described active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone quality sum account for the 5%-90% of Herbicidal combinations.
8. Herbicidal combinations according to claim 1, is characterized in that: described active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone quality sum account for the 10%-80% of Herbicidal combinations.
9. Herbicidal combinations according to claim 1, is characterized in that: described active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone quality sum account for the 20%-60% of Herbicidal combinations.
10. Herbicidal combinations according to claim 1, is characterized in that: described active component benzene azoles humulone, 2 first 4 chlorine sodium and bentazone quality sum account for the 30%-50% of Herbicidal combinations.
11. Herbicidal combinations according to claim 1, is characterized in that: formulation is wetting powder, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspension emulsion, water dispersible granules, soluble granula, aqua, microcapsule suspension-suspendinagent agent, ultra low volume liquids.
12. Herbicidal combinations according to claim 1 are preventing and kill off the application in broad-leaved section weeds, sedge weed, grassy weed.
13. Herbicidal combinations according to claim 1 are preventing and kill off the application between corn field in broad-leaved section weeds, sedge weed, grassy weed.
The method of 14. 1 kinds of undesirable plants of control, comprising: (i) before undesirable plant germination (before bud); (ii) after undesirable plant germination (after bud), or (iii) (i) and (ii) time, the Herbicidal combinations of the claim 1 of herbicidally effective amount is applied on the growth place of undesirable plant or leaf or stem.
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