CN104604916B - A kind of Herbicidal combinations containing pinoxaden - Google Patents

Abstract

The invention discloses a kind of Herbicidal combinations containing pinoxaden, including active ingredient mesosulfuron, pinoxaden and clodinafop-propargyl, wherein, the percentage by weight that mesosulfuron accounts for the composition is 1%~10%, the percentage by weight that pinoxaden accounts for the composition is 2%~10%, and the percentage by weight that clodinafop-propargyl accounts for the composition is 2%~30%.The present composition can be configured to agriculturally allow the suspending agent for using, water dispersible granules, wettable powder or dispersible oil-suspending agent.The component screening of the present composition is reasonable, have significant synergies, expand herbicide controlling spectrum, reduce drug cost, security to wheat is good, the prevention effect to weeds of wheat is improve, is particularly suited for preventing and kill off amur foxtail, Alopecurus, not hard grass, the cornfield gramineae weed such as grass, annual bluegrass or Triticum tauschii.

Description

A kind of Herbicidal combinations containing pinoxaden

Technical field

The invention belongs to technical field of compounded pesticide, it is related to a kind of Wheat field weeding composition, more particularly to one kind is with first The sulphur of base two is grand, pinoxaden and clodinafop-propargyl are the Wheat field weeding composition of herbicidal active component, it is adaptable to prevent and treat wheatland grass Section weeds.

Background technology

Wheat is one of main cereal crops of China, rich in starch, protein, fat, mineral matter, calcium, iron etc., every year Cultivated area more than 30,000,000 hm², it is only second to the cultivated area of paddy rice.China's major part wheatland crop smothering occurs seriously, commonly The underproduction more than 15%, can have no harvest when serious.Cornfield gramineae weed mainly has amur foxtail, Alopecurus, not hard grass, grass, morning Ripe standing grain, Triticum tauschii, wild oat etc., broad leaved weed mainly have ox chickweed, shepherd's purse, clearvers etc..Because long-term use is same or Same class herbicide, weeds of wheat population generates serious resistance, and harm is aggravated, prevented and kill off more and more difficult.

Mesosulfuron, English name mesosulfuron-methyl belongs to sulfonylurea absorbability conduction type weeding Agent, the main cauline leaf by plant absorbs, and is conducted through bast and xylem, on a small quantity by soil absorption, suppresses sensitive plant The activity of internal acetolactate synthestase, causes the biosynthesis block of the numerous acid of side chain ammonia, so as to suppress cell division, causes sensitivity Plant growth is stagnated, cauline leaf chlorisis, gradually dead.Generally, after dispenser 2~4 hours, the uptake of susceptible weeds reaches Peak, stops growing after 2 days, and rear blade starts yellow within 4~7 days, withered spot then occurs, dead after 2~4 weeks.

The safener contained in mesosulfuron herbicide, can promote mesosulfuron to be decomposed rapidly in crop body, and Its degraded in target weeds body is not influenceed, and the purpose of weeds, cover crop is killed so as to reach.Mesosulfuron herbicide Suitable for being used soft and semi-rigid type winter wheat variety, various cornfield gramineae weeds can be prevented and kill off.But the sulphur of methyl two It is grand good to annual bluegrass, Triticum tauschii effect, it is poor to Alopecurus, amur foxtail, hard grass, not careless preventive effect.Mesosulfuron is in soil The longevity of residure in earth is short, not under the influence of stubble plant growth.

Pinoxaden, English name pinoxaden belongs to neophyl pyrazolines herbicide, is a kind of acetyl-coa carboxylase Enzyme (ACC) inhibitor, causes aliphatic acid biosynthesis block, stops cell division, and cell membrane is destructurized containing fat, causes Weeds are dead.Pinoxaden has Uptake and translocation, is mainly used in barley, wheat paddock and prevents and kill off annual gramineous weed.Through field Between practical proof, pinoxaden to wheat paddock amur foxtail, hard grass, deceive careless effect preferably, can be carried by increasing medicament usage amount Preventive effect to Alopecurus high, but it is poor to annual bluegrass, Triticum tauschii, bromegrass effect.

Clodinafop-propargyl, English name clodinafop-propargyl is developed by ciba-Geigy companies, the fragrant phenoxy third of category Acid herbicides, can effectively suppress the biosynthesis of class ester, be that one kind is the auxiliary quick A hydroxylase inhibitors of acetyl.Clodinafop-propargyl is in soil Free acid phenyl is degraded to quickly in earth and pyridine moiety enters soil.Clodinafop-propargyl is mainly used in preventing and kill off wheat paddock grass family miscellaneous Grass, it is good to wild oat, amur foxtail effect, it is general to hard grass, not grass, annual bluegrass effect.With the enhancing of Alopecurus resistance, Its preventive effect to Alopecurus is worse and worse.

Investigated by inventor and learnt, the group of wheat paddock grassy weed distribution becomes increasingly complex, the northern area of wheat and along Huaihe River The river reach domain area of wheat is mixed hair region.Wherein Shaanxi, Hebei, Henan, Shandong are mainly with wild oat, amur foxtail, Triticum tauschii, bromegrass Based on mixed hair, Jiangsu, Anhui mainly with hard grass, deceive that grass, annual bluegrass, amur foxtail, Alopecurus are mixed and send out based on, and with machinery The popularization of harvesting, weed seed is increasingly severe with the trend that machinery is propagated, in the mixed hair of coming years grassy weed Phenomenon will be more universal.

Mesosulfuron is good to wheat paddock annual bluegrass, Triticum tauschii effect, anti-to Alopecurus, amur foxtail, hard grass, not grass Effect is poor.Pinoxaden is preferable to wheat paddock amur foxtail, Alopecurus, hard grass, not careless effect, to annual bluegrass, Triticum tauschii, sparrow Wheat effect is poor.Clodinafop-propargyl is good to wild oat, amur foxtail effect, to hard grass, grass, annual bluegrass effect is deceived typically, with resistance Enhancing preventive effect is worse and worse, poor to Alopecurus effect, at present mainly as mesosulfuron and the compounding system of pinoxaden Agent is used, and plays synergistic effect.

Mesosulfuron and clodinafop-propargyl binary built preparation can be very good to solve annual bluegrass, Triticum tauschii, wild oat, see wheat Ma, but she it is poor for Alopecurus, hard grass, not careless preventive effect.Pinoxaden and clodinafop-propargyl binary built preparation can be very good solution Certainly wild oat, hard grass, deceive grass, amur foxtail, Alopecurus, it is but poor to annual bluegrass, Triticum tauschii preventive effect.Mesosulfuron and oxazoline Careless ester binary built preparation can preferably solve Triticum tauschii, annual bluegrass, amur foxtail, not hard grass, grass, Alopecurus, but pin Preventive effect higher is not reached, it is necessary to add the third composition clodinafop-propargyl to can be only achieved synergy to hard grass, not grass, Alopecurus Effect.

Found through experiment, either single dose uses still any binary built for mesosulfuron, pinoxaden and clodinafop-propargyl Use, all can not effectively solve the mixed question topic of grassy weed.And by the different mesosulfuron of the mechanism of action, pinoxaden and Clodinafop-propargyl is compounded, and can be significantly improved to cornfield gramineae weed prevention effect, especially to annual bluegrass, hard grass, deceive grass, amur foxtail, Alopecurus and Triticum tauschii synergistic effect significantly, expand control of weeds spectrum simultaneously, have delayed different weeds to the resistance of single dose, Dosage is reduced, cost accounting is reduced, it is high to crop safety.

The content of the invention

The fact that the purpose of the present invention is intended to hair mixed for wheat planting district grassy weed present situation, there is provided one kind contains azoles The Herbicidal combinations of quinoline grass ester.The Herbicidal combinations are the ternary recompounded composites of mesosulfuron, pinoxaden and clodinafop-propargyl, Various grassy weeds in wheat field can effectively be prevented and kill off.

Above-mentioned Herbicidal combinations overcome the technological deficiency of single use or any the two compounding, three kinds of herbicidal active components Between have excellent synergistic effect, and be it is a kind of to wheat safety agricultural herbicide composition, can be used for preventing and treating it is various Cornfield gramineae weed, especially to amur foxtail, Alopecurus, not hard grass, the wheat paddock grass family such as grass, annual bluegrass or Triticum tauschii The preventive effect of weeds is especially prominent.It is compatible with suitable auxiliary agent by prior art means to coordinate promoting the use of for farmland, Suspending agent, water dispersible granules, wettable powder can be prepared into or the formulations such as oil-suspending agent are dispersibled.

The present invention is not only that wheat paddock grassy weed is prevented and kill off there is provided a kind of technical scheme with practical value, also Enrich cornfield herbicidal kind.

Specifically, to achieve these goals, The present invention gives a kind of Herbicidal combinations containing pinoxaden, including Active ingredient mesosulfuron, pinoxaden and clodinafop-propargyl, wherein, the percentage by weight that mesosulfuron accounts for the composition is 1%~10%, the percentage by weight that pinoxaden accounts for the composition is 2%~10%, and clodinafop-propargyl accounts for the weight of the composition Amount percentage is 2%~30%.

Further, the content sum of the mesosulfuron, pinoxaden and clodinafop-propargyl accounts for the composition total weight Percentage be 5%~50%.

As described above, for the ease of applying Herbicidal combinations of the present invention in field, obtaining due control of weeds Effect, can be prepared into the formulation for agriculturally allowing of multi-form by current conventional Pesticide formulation mode.These Formulation can be suspending agent, water dispersible granules, wettable powder or dispersible oil-suspending agent.To the technology people in preparation processing field For member, when preparing above-mentioned formulation, in addition to including mesosulfuron, three kinds of herbicidal active components of pinoxaden and clodinafop-propargyl, also One or more suitable auxiliary agent need to be used.

When preparing suspending agent, available auxiliary agent includes：Dispersant such as polycarboxylate, lignosulfonates, alkylnaphthalene sulphur It is a kind of or many in hydrochlorate (dispersing agent NNO), TERSPERSE 2020 (Huntsman Corporation of the U.S. produces, alkyl naphthalene sulfonic acid salt) Kind；Emulsifying agent such as Nongru-700 # (common names：Alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, -60# is (general for this disk Name：Span60), Tween-60 # (common names：Polyoxyethylene sorbitan stearate), agriculture breast 1601# (common name：Triphenoethyl benzene phenol polyoxyethylene polyoxypropylene block polymer), TERSPERSE4894 (Huntsman Corporations of the U.S. Produce) in one or more；Wetting agent such as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulfate, alkylphenol-polyethenoxy Base ether phosphate, phenethyl phenol polyoxyethylene groups ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, One or more in TERSPERSE 2500 (Huntsman Corporation of U.S. product)；Thickener such as xanthans, polyvinyl alcohol, swelling One or more in soil, aluminium-magnesium silicate；One or more in preservative such as formaldehyde, benzoic acid, Sodium Benzoate；Stabilizer such as epoxy One or more in soybean oil, epoxychloropropane, triphenyl phosphate；Defoamer such as organic silicon defoamer；Antifreezing agent such as second two One or more in alcohol, propane diols, glycerine, urea, inorganic salts such as sodium chloride；Water is deionized water.

When preparing water dispersible granules, those skilled in the art are very familiar with using corresponding auxiliary agent to complete the present invention.Can select Dispersant such as polycarboxylate (TERSPERSE 2700, T36, GY-D06), lignosulfonates, alkylnaphthalene sulfonate in one Plant or various；One or more in wetting agent such as alkyl sulfate, alkylsulfonate, naphthalene sulfonate；Disintegrant such as ammonium sulfate, sulphur One or more in sour sodium, polyvinylpyrrolidone, starch and its derivative, bentonite；Binding agent such as starch, glucose, poly- One or more in vinyl alcohol, polyethylene glycol, sodium carboxymethylcellulose, sucrose；Filler for example diatomite, kaolin, white carbon, Fine particle calcium carbonate, talcum powder, attapulgite, one or more of potter's clay.

When preparing wettable powder, usable dispersant such as polycarboxylic acid salt (TERSPERSE 2700, T36, GY-D06 Deng), lignin sulfonate (Ufoxane 3A, Borresperse NA, Borresperse CA-SA etc.), naphthalene and alkylnaphthalene Formaldehyde condensate sulfonate class (NNO, MF, Morwet D-425, Tamol NN, TERSPERSE2020 etc.), Nekal BX (two Sodium butylnaphthalenesulfonate), EO-PO block polyethers class, alkylphenol-polyethenoxy base ether phosphate, alkylphenol-polyethenoxy base ether formaldehyde Condensate sulfate (SOPA), in one or more；Wetting agent such as Sulfates (K-12), Sulfonates (ABS-Na, BX, Terwet 1004 etc.), one or more in compound wetting agent (Morwet EFW)；Filler such as diatomite, kaolin, fine particle calcium carbonate, cunning Stone flour, white carbon, attapulgite, potter's clay, ammonium sulfate, urea, sucrose, glucose, cornstarch, sodium sulphate, sodium polyphosphate Deng one or more.

When preparation dispersibles oil-suspending agent, available auxiliary agent includes：Dispersant for example polycarboxylate, alkylnaphthalene sulfonate, One or more in TERSPERSE 2425 (Huntsman Corporation of the U.S. produces, alkyl naphthalene sulfonic acid salt)；Emulsifying agent such as agriculture breast 700# (common names：Alkylphenol formaldehyde APEO), agriculture breast 2201, this (common name of disk -60：Sorbitol anhydride monostearate Ester), Tween-60 (common name：Sorbitan fatty acid ester APEO), agriculture breast 1601# (common names：Triphenoethyl benzene Phenol polyoxyethylene polyoxypropylene block polymer), TERSPERSE 4894 (Huntsman Corporation of U.S. product), TERSPERSE One or more in 2500 (Huntsman Corporation of U.S. products)；Wetting agent such as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphur Hydrochlorate, APES phosphate, phenethyl phenol polyoxyethylene groups ether phosphate, alkyl sulfate, alkylsulfonate, One or more in naphthalene sulfonate, TERSPERSE 2500 (Huntsman Corporation of U.S. product)；Thickener such as white carbon, polyethylene One or more in alcohol, bentonite, aluminium-magnesium silicate；Antifreezing agent such as ethylene glycol, propane diols, glycerine, urea, inorganic salts such as chlorine Change one or more in sodium；One kind or many in decentralized medium such as soybean oil, rapeseed oil, corn oil, methyl oleate, castor oil Kind.

Compared with existing wheat field herbicide, Herbicidal combinations of the present invention have the advantage that and are mainly reflected in The following aspects：

(1) substantial amounts of experiment has confirmed that either single dose is used or appointed for mesosulfuron, pinoxaden and clodinafop-propargyl Meaning binary built is used, and all can not effectively solve the mixed question topic of grassy weed.Specifically, mesosulfuron and clodinafop-propargyl are multiple Pairing Alopecurus, hard grass, not careless preventive effect are poor；Pinoxaden and clodinafop-propargyl compounding are poor to annual bluegrass, Triticum tauschii preventive effect；Methyl Two sulphurs are grand and pinoxaden compounding does not reach good preventive effect to hard grass, not grass, Alopecurus.The ternary that the present invention is provided is answered The Herbicidal combinations matched somebody with somebody can be very good to overcome drawbacks described above, and the preventive effect of the various grassy weeds mixed to wheat paddock is good Good, its herbicide controlling spectrum and the preventive effect to part grassy weed are obviously improved.Confirmed by substantial amounts of experiment, first The sulphur of base two is grand, the activity of weeding of three kinds of active ingredients of pinoxaden and clodinafop-propargyl and effect are more than simple superposition, but show Significantly synergistic effect is gone out, especially to amur foxtail, Alopecurus, not hard grass, the wheat paddock standing grain such as grass, annual bluegrass or Triticum tauschii The preventive effect of undergraduate course weeds is especially pronounced.

(2) present invention also reduces formulation rate and dispenser cost, and three kinds of mechanisms of action while herbicide controlling spectrum is expanded Different herbicidal active component compoundings, is conducive to delaying weeds of wheat to resist mesosulfuron, pinoxaden and clodinafop-propargyl The aggravation of property.

(3) Herbicidal combinations of the present invention can be configured to meet the suspending agent of agricultural production demand, water dispersible granules, Wettable powder dispersibles oil-suspending agent formulation, and good to Safe to wheat, meets the security requirement of pesticidal preparations.

(4) present invention enriches existing cornfield herbicidal kind, can bring considerable market efficiency.

Specific embodiment

For the ease of understanding the purpose of the present invention, technical scheme and its effect, now the present invention will be done in conjunction with the embodiments into One step is elaborated.

(1) preparation prepares part

Example of formulations 1

Weigh 100 grams of mesosulfurons, 100 grams of pinoxadens, 300 grams of clodinafop-propargyls, 25 grams of (U.S. of TERSPERSE 4894 Huntsman Corporation produces), 30 grams of phenethyl phenol polyoxyethylene groups ether phosphates, 20 grams of dispersing agent NNOs, 20 grams of aluminium-magnesium silicates, 5 grams Polyvinyl alcohol, 50 grams of glycerine, 10 grams of formaldehyde, 5 grams of organic silicon defoamer (trade names：S-29 Nanjing "four news" (new ideas applied chemistry product company Produce), deionized water adds to 1000 gram weights part.Above-mentioned raw materials are blended, high speed shear dispersion 30min, are sanded with sand mill It is 50% mesosulfuron pinoxaden clodinafop-propargyl suspending agent that active constituent content is obtained afterwards.

Example of formulations 2

Weigh 80 grams of mesosulfurons, 70 grams of pinoxadens, 250 grams of clodinafop-propargyls, 20 grams of this disk -60#, 25 grams of agriculture breasts 700#, 30 grams of sodium lignin sulfonates, 15 grams of sodium alkyl sulfonates, 10 grams of xanthans, 10 grams of aluminium-magnesium silicates, 30 grams of ethylene glycol, 10 grams Sodium Benzoate, 5 grams of organic silicon defoamer (trade names：S-29 Nanjing "four news" (new ideas applied chemistry product company produce), 10 grams of phosphoric acid triphens Ester, deionized water adds to 1000 gram weights part.Above-mentioned raw materials are blended, high speed shear dispersion 30min, made after being sanded with sand mill It is 40% mesosulfuron pinoxaden clodinafop-propargyl suspending agent to obtain active constituent content.

Example of formulations 3

Weigh 60 grams of mesosulfurons, 90 grams of pinoxadens, 200 grams of clodinafop-propargyls, 30 grams of GY-D06 (polycarboxylate), 20 grams Sodium lignin sulfonate, 15 grams of Nekal BXs (nekal), 10 grams of K-12 (lauryl sodium sulfate), 15 grams of poly- second two Alcohol, 20 grams of polyvinylpyrrolidones, diatomite add to 1000 gram weights part.The side of the frequent regulation water intaking dispersible granule of above-mentioned raw materials Method is mixing, ultra micro air-flow crushing, mixing, granulation step, and it is 35% mesosulfuron oxazoline grass to produce active constituent content Ester clodinafop-propargylwater water dispersible granule.

Example of formulations 4

Weigh 70 grams of mesosulfurons, 80 grams of pinoxadens, 150 grams of clodinafop-propargyls, 25 grams of (polycarboxylic acids of TERSPERSE 2700 Salt, Huntsman Corporation of the U.S. produce), 30 grams of dispersing agent NNOs (alkylnaphthalene sulfonate formaldehyde condensation products), 20 grams of Nekal BXs (two Sodium butylnaphthalenesulfonate), 20 grams of K-12 (lauryl sodium sulfate), 20 grams of sodium carboxymethylcelluloses, 20 grams of ammonium sulfate, kaolin adds To 1000 gram weights part.The method of the frequent regulation water intaking dispersible granule of above-mentioned raw materials is mixing, ultra micro air-flow crushing, mixes, makes Grain step, produces active constituent content for 30% mesosulfuron pinoxaden clodinafop-propargylwater water dispersible granule.

Example of formulations 5

Weigh 40 grams of mesosulfurons, 60 grams of pinoxadens, 100 grams of clodinafop-propargyls, 30 grams of polycarboxylic acid salt GY-D06,30 grams Alkylnaphthalene sulfonate formaldehyde condensation products (Morwet D-425), 15 grams of Sulfonateses (Terwet 1004), talcum powder fill up to 1000 grams of weight portion.Above-mentioned raw materials are blended, ultra micro air-flow crushing, hybrid technique step, and being prepared into active constituent content is 20% mesosulfuron pinoxaden clodinafop-propargyl wettable powder.

Example of formulations 6

Weigh 90 grams of mesosulfurons, 50 grams of pinoxadens, 50 grams of clodinafop-propargyls, 25 grams of sodium lignin sulfonates, 25 grams of alkyl Naphthalenesulfonate formaldehyde condensation compound (TERSPERSE2020), 10 grams of Sulfonateses (ABS-Na), white carbon are filled up to 1000 grams of weight Amount part.Above-mentioned raw materials are blended, ultra micro air-flow crushing, hybrid technique step, are prepared into active constituent content for 19% methyl two The grand pinoxaden clodinafop-propargyl wettable powder of sulphur.

Example of formulations 7

Weigh 25 grams of mesosulfurons, 25 grams of pinoxadens, 25 grams of clodinafop-propargyls, 30 grams of (U.S.'s henries of TERSPERSE 2020 Si Mai companies HUNTSMAN produce, alkyl naphthalene sulfonic acid salt), 40 grams of BY-125,30 grams of this disk -60#, 25 grams of TERSPERSE 2500 (Huntsman Corporation of U.S. products), 10 grams of aluminium-magnesium silicates, 25 grams of ethylene glycol, corn oil are filled up to 1000 gram weights part.On State raw material blended, high speed shear dispersion 30min, it is the sulphur of 7.5% methyl two that active constituent content is obtained after being sanded with sand mill Grand pinoxaden clodinafop-propargyl dispersibles oil-suspending agent.

Example of formulations 8

Weigh 10 grams of mesosulfurons, 20 grams of pinoxadens, 20 grams of clodinafop-propargyls, 30 grams of dispersing agent NNO (alkyl naphthalene sulfonic acids Salt), 20 grams of BY-140#, 30 grams of tween agriculture breast 1601#, 20 grams of Nongru-700 #, (U.S.'s Hensel is stepped 20 grams of TERSPERSE 2500 Company produces), 20 grams of bentonites, 50 grams of propane diols, rapeseed oil adds to 1000 gram weights part.Above-mentioned raw materials are blended, cut at a high speed Cutting dissipates 30min, and active constituent content is obtained after being sanded with sand mill for 5% mesosulfuron pinoxaden clodinafop-propargyl can Dispersion oil-suspending agent.

(2) Biometric portion

Assays Example 1

Illustrate mesosulfuron, pinoxaden and clodinafop-propargyl mixture to cornfield gramineae weed by Toxicity Determination Synergistic effect.

In order to prevent and treat cornfield gramineae weed, inventor has been carried out mutually with mesosulfuron, pinoxaden and clodinafop-propargyl The synergy of compounding is studied, and specific method is：

Subjects are amur foxtail (Alopecurus aequalis), Alopecurus (Alopecurus Japonicus), hard grass (Sclerochloa dura), not careless (Beckmannia syzigachne), annual bluegrass (Poa Annua seed is collected in), Triticum tauschii (Aegilops tauschii), field, and germination percentage is more than 95%.

The test medicine that active compound is configured to need, test method reference《People's Republic of China (PRC) agricultural industry criteria NY/ The part of T1155.7-2006 farm-chemical indoor determination test rules herbicide the 7th：The synergy of mixture is determined》.First will Single dose and each Mixed Pharmacy set 3~4 various concentrations gradients, and (preventive effect is set in the range of 5%~90% by geometric progression It is fixed), if 1 clear water control, is repeated 4 times.

Culture for trying weeds uses indoor pot cultivation.Experiment soil is special for the experiment that non-medication plot is collected Soil, takes flowerpot of the same size, and soil is filled at 2/3 height, adds water and treats soil complete wetting, and vernalization in biochemical cultivation case is revealed White weed seed is uniformly placed in flowerpot, each about 100 per basin, and cellar culture in greenhouse is placed in after 0.5~1cm of blinding, To be 80 plants per basin weeds fixed number after weeds emerge.In 3~5 leaf phase of weeds, liquid is uniformly sprayed with laryngeal spray Onto weeds plant, continue to be placed in be uniformly thoughtfully defined, after dispenser and observation is cultivated in greenhouse.

The Herbicidal combinations containing pinoxaden of present invention offer are evaluated to cornfield gramineae weed using co-toxicity coefficient method Preventive effect, regression equation is asked to the preventive effect niqueMin of target weeds with the logarithm and medicament of drug concentration, and calculate medicament To the ED of weeds₅₀Value, then tries to achieve co-toxicity coefficient.

Synergy effect of the compound drug to weeds, co-toxicity coefficient are evaluated with co-toxicity coefficient>120 are expressed as synergy work With co-toxicity coefficient is expressed as summation action, co-toxicity coefficient between 80~120<80 are expressed as antagonism.Toxicity Determination Result of the test be shown in Table 1 to table 6.

The mesosulfuron of table 1, pinoxaden combine the Toxicity Determination to amur foxtail with clodinafop-propargyl

The mesosulfuron of table 2, pinoxaden combine the Toxicity Determination to Alopecurus with clodinafop-propargyl

The mesosulfuron of table 3, pinoxaden combine the Toxicity Determination to hard grass with clodinafop-propargyl

The mesosulfuron of table 4, pinoxaden combine the Toxicity Determination to deceiving grass with clodinafop-propargyl

The mesosulfuron of table 5, pinoxaden combine the Toxicity Determination to annual bluegrass with clodinafop-propargyl

The mesosulfuron of table 6, pinoxaden combine the Toxicity Determination to Triticum tauschii with clodinafop-propargyl

Toxicity Determination result shown in table 1 to table 6 shows that mesosulfuron, pinoxaden and clodinafop-propargyl press one Fixed ratio compounding, can filter out to grassy weed amur foxtail, Alopecurus, not hard grass, grass, annual bluegrass, Triticum tauschii The ternary built for having preferable virulence is combined.Especially, the active ingredient mesosulfuron of above-mentioned ternary built combination accounts for described The percentage by weight of composition is 1%~10%, and the percentage by weight that pinoxaden accounts for the composition is 2%~10%, alkynes Careless ester account for the composition percentage by weight be 2%~30% when, to grassy weed amur foxtail, Alopecurus, hard grass, Not grass, annual bluegrass, the virulence of Triticum tauschii are respectively provided with preferable synergistic effect.

Biological Examples 2, prevent and treat cornfield gramineae weed field control effectiveness test

Inventor has carried out (the 7.5% mesosulfuron oxazoline grass of example of formulations 7 in 2014 in Baoji, Shaanxi province city Ester clodinafop-propargyl dispersibles oil-suspending agent) preventing and treating cornfield gramineae weed field control effectiveness test, the medicament is demonstrated to wheatland standing grain The prevention effect of undergraduate course weeds and the security to wheat.

Trial crops are wheat, controlling object be cornfield gramineae weed (amur foxtail, Alopecurus, hard grass, deceive grass, Annual bluegrass, Triticum tauschii), weed size is in 2~5 leaf phases.Experiment is located at Baoji Mei County, and experimental plot physical features is flat, and soil is earth Soil, middle fertility, pH value 7.1, rich water quality management is medium during experiment.Test medicine and dosage refer to table 7.Blank separately is set, 4 repetitions are often processed, often the ㎡ of cell 30, totally 40 cells, the random district's groups arrangement of cell.Using conventional spray-on process, mu dispenser liquid 45kg。

Table 7 prevents and treats cornfield gramineae weed field control effectiveness test result

Table of field test results is bright, and 7.5% mesosulfuron pinoxaden clodinafop-propargyl dispersibles oil-suspending agent to wheat Field grassy weed has good prevention effect, is sprayed 1 time by 15 grams/acre, 20 grams/acre, 25 grams/acre, miscellaneous to wheatland grass family The average preventive effect of 40 days is respectively 92.15%, 95.37%, 96.96% after herbal medicine, hence it is evident that better than 5% pinoxaden clodinafop-propargyl Dispersible 30 grams/acre of oil-suspending agent, 5% mesosulfuron clodinafop-propargyl and dispersible 30 grams/acre of oil-suspending agent, the sulphur of 5% methyl two Grand pinoxaden dispersibles 50 grams/acre of oil-suspending agent, 3% mesosulfuron and dispersibles 25 grams/acre of oil-suspending agent, 5% oxazoline The preventive effect of 50 grams/acre of careless emulsifiable concentrate, 16.7 grams/acre of 15% Clodinafop-propargyl microemulsion.40 days significance difference analysis after to medicine, 7.5% mesosulfuron pinoxaden clodinafop-propargyl dispersible oil-suspending agent with other control compared with, it is miscellaneous to wheatland grass family Careless preventive effect difference reaches the pole level of signifiance (table 7).

Security survey of the embodiment preparation to wheat：Each treatment is to wheat safety without poisoning.Raised from dispenser to heading Florescence, Plant Height in Wheat, leaf color, tiller, secondary root etc. are consistent with control.

From above example, three active components are by weight percentage：Mesosulfuron 1%~10%, azoles Quinoline grass ester 2%~10%, clodinafop-propargyl 2%~30% compounded, can be made into suspending agent, water dispersible granules, wettable powder, can Dispersion oil-suspending agent, has significant prevention effect to cornfield gramineae weed such as annual bluegrass, hard grass, not grass, amur foxtail, and synergy is made With obvious, dosage and drug cost are reduced, and it is good to Safe to wheat, it is the preferable medicine for preventing and treating cornfield gramineae weed Have wide practical use in agent, therefore production.

In sum, composition of the invention is that, using three kinds of active component compound schemes, its activity and herbicidal effect are not It is the simple superposition of each component activity, compared with existing unitary agent or binary built preparation, except with significant weeding effect Fruit is outer, has significant synergistic effect to grassy weed amur foxtail, Alopecurus, hard grass, not grass, annual bluegrass, Triticum tauschii, miscellaneous Grass preventing and treating spectrum expands, and cost accounting reduction is good to crop safety, meets the security requirement of pesticidal preparations.

Claims (5)

1. a kind of Herbicidal combinations containing pinoxaden, it is characterised in that active ingredient by the first active component mesosulfuron, Second active component pinoxaden is constituted with the 3rd active component clodinafop-propargyl, the first active component, the second active component and the 3rd The percentage by weight of active component is：Mesosulfuron 1%~10%, pinoxaden 2%~10%, clodinafop-propargyl 2%~25%.

2. the herbicidal composition of pinoxaden is contained according to claim 1, it is characterised in that the first active component, second The content sum of active component and the 3rd active component is the 5%~50% of the composition total weight.

3. the herbicidal composition of pinoxaden is contained according to claim 1, it is characterised in that the combination dosage form is outstanding Floating agent, water dispersible granules, wettable powder dispersible oil-suspending agent.

4. purposes of the herbicidal composition of pinoxaden on preventing and treating cornfield gramineae weed is contained according to claim 1.

5. purposes according to claim 4, cornfield gramineae weed includes amur foxtail, Alopecurus, hard grass, deceives grass, early Ripe standing grain and Triticum tauschii.