CN103749480A - Paddy field herbicide composition and application - Google Patents
Paddy field herbicide composition and application Download PDFInfo
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- CN103749480A CN103749480A CN201410049253.8A CN201410049253A CN103749480A CN 103749480 A CN103749480 A CN 103749480A CN 201410049253 A CN201410049253 A CN 201410049253A CN 103749480 A CN103749480 A CN 103749480A
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Abstract
The invention provides a paddy field herbicide composition which comprises the following active ingredients: mesotrione A, a cyclic imide herbicide B and a paddy field herbicide C, wherein the cyclic imide herbicide B is selected from oxadiazon, oxadiargyl or pentoxaxone, and the paddy field herbicide C is selected from bensulfuron methyl, halosulfuron methyl, pyriftalid, pretilachlor, butachlor, mefenacet, penoxsulam, prometryn or simetryn. The paddy field herbicide composition is used for preventing and controlling annual and perennial weeds in paddy fields. The composition has an obvious synergistic or additive effect for controlling weeds in the paddy fields in a certain matching range, and the effect of preventing and controlling annual weeds in the paddy fields is obviously better than that of each single dose. The weed removing spectrum is expanded, the dosage is reduced, the herbicide cost is reduced, and the adverse effect of pesticides on the ecological environment is reduced.
Description
Technical field
The invention belongs to pesticide field, relate in particular to a kind of herbicide for paddy field composition, said composition is used for preventing and treating the annual and perennial weeds of paddy field.
Background technology
Paddy rice is the crops of China's cultivated area maximum, and common weed kind approximately has 100 kinds, because weeds harm causes annual national paddy percent of loss more than 15%.Chemical weed control is the most reliable and the most cheap method of weed control of current paddy field; Common weed killer herbicide comprises mesotrione, cyclic imide class weed killer herbicide, conventional herbicide for paddy field etc.
Mesotrione, english common name: mesotrione, chemical name: 2-(2-nitro-4-mesyl benzoyl) cyclohexane-1,3-diketone, molecular formula: C
14h
13n0
7s, structural formula:
Mesotrione suppresses the activity to oxypyroracemic acid dioxygenase (HPPD), and HPPD can be converted into plastoquinone by amino acid TYR.Plastoquinone is the co-factor of phytoene desaturase.It is the biosynthetic key enzyme of carotenoid.Use 3-5 days implants meristematic tissue of mesotrione to occur that yellow symptom causes withered spot thereupon, after fortnight, spread all over whole strain plant.There is faintly acid, in inoic acid soil, can tightly be adsorbed on organic substance; In neutrality or basic soil, to be difficult for absorbed anionic form, exist.
Oxadiazon, English name: Oxadiazon, chemical name: 5-tertiary butyl-3-(the chloro-5-o-phenyl-isopropyl of 2,4-bis-)-quinoline-2-ketone, molecular formula: C
15h
18cl
2n
2o
3, structural formula:
Oxadiazon belongs to cyclic imide class, for before selectivity contact killing type bud, post-emergence herbicide, for preventing and kill off multiple annual unifacial leaf and broadleaf weed, be mainly used in paddy field weed-killer, peanut to dry land, cotton, sugarcane etc. are also effective.
Oxadiargyl, English name: Oxadiargyl, chemical name: 5-tert-butyl-3-(the chloro-5-of 2,4-bis-(Propargyl oxygen base) phenyl)-1,3,4-oxadiazole-2 (3H)-one, molecular formula: C
15h
14cl
2n
2o
3, structural formula:
Oxadiargyl is that French Luo Na-Rhone-Poulenc is in the cyclic imide class selectivity contact killing type High-efficient Water dry land bud phase weed killer herbicide of early 1990s exploitation, be proporphyrinogen oxidase (Protox) inhibitor, can be used for paddy rice, sugarcane, sunflower, potato, winter wheat and transplant the crop Tanakas such as vegetables and prevent and kill off annual gramineous weed and most of broad leaved weed.
Pentoxazone: English name: Pentoxazone, molecular formula: C
17h
17clFNO
4, structural formula:
The third careless amine: English name: Pretilachlor, molecular formula: C
17h
26clNO
2, structural formula:
The third careless amine is the front soil sealing of the paddy field amide-type bud weed killer herbicide with high selectivity, is mainly used in soil treatment and prevents and kill off grassy weed.
Bensulfuron-methyl: English name: Bensulfuron methyl, molecular formula: C
16h
18n
4o
7s, structural formula:
Bensulfuron-methyl is selectivity inner sucting conduction type sulfonylurea herbicide.Be applicable to rice field and prevent and kill off life in 1 year and perennial broadleaf weed and nutgrass flatsedge, after rice bud, before weeds bud and dispenser after bud, respond well to Monochoria vaginalis, pondweed, mexicana etc. and Sha section weeds (fescue, difformed galingale herb, Herba Cyperi Glomerati etc.).Medicament is diffusion rapidly in water, after weeds root and blade absorption, transfers to other position, hinders branched-chain amino acid biosynthesis.Susceptible weeds GF is obstructed, tender tissue turns to be yellow too early, suppresses leaf portion, root growth.To rice safety, using method is flexible.
Prometryn: English name: Prometryn, molecular formula: C
10h
19n
5s, structural formula:
Prometryn belongs to triazine inner sucting conduction type selective herbicide.Main by the Root Absorption of weeds, suppress the photosynthesis of weeds, make weeds death.Be applicable to cotton, soybean, wheat class, peanut, sunflower, potato, fruit tree, vegetables, tea tree and paddy field and prevent and kill off 1 year raw grass family such as barnyard grass, lady's-grass, moleplant seed, emarginate amaranth herb or seed, knotweed, lamb's-quarters, kitchen garden, amur foxtail, chickweed, Asiatic plantain and broadleaved herb.For paddy field, mainly prevent and kill off pondweed etc.
Pyriftalid: English name: Pyriftalid, molecular formula: C
15h
14n
2o
4s, structural formula:
Pyriftalid is early stage miazines oxygen (sulphur) benzoates broad-spectrum herbicide after rice seedlings, aims at and transplants and direct seading rice exploitation.Its mechanism of action is suppress acetolactate synthestase (ALS) synthetic.Be used for preventing and treating paddy field grassy weed and part broad leaved weed, at paddy field, pyriftalid is absorbed by paddy rice root tip, and seldom a part can be transmitted on blade, and the grass cutting blade that small part medicament can be sprouted absorbs.Annual gramineous weed, sedge family and part broad leaved weed to transplanting rice field have good control efficiency.
In recent years, because the long-time large area of the relatively single herbicides for use in paddy kind of action site is used separately, caused a lot of weeds to develop immunity to drugs, cause rice field resistance grassy weed, broad leaved weed, sedge weed to occur and rapid spread, become a very important major issue in Rice Production.The rice field resistant weed of having reported is as the Monochoria korsakowii of anti-bensulfuron-methyl and inhibitor of acetolactate synthetase, mexicana, the barnyard grass of ear leaf water amaranth, anti-dichloro quinolinic acid, moleplant seed etc.When weeds in paddy field occurs simultaneously, grass is complicated mutually, in most cases grassy weed, broad leaved weed, the mixed life of sedge weed, and single variety weed killer herbicide is difficult to solve the control of all weeds in rice field.
Therefore, be badly in need of that exploitation is efficient, low toxicity, safe, economic herbicide combination product.
The inventor has explored whether different types of weed killer herbicide is rationally composite can improve control efficiency, expands herbicidal spectrum, delays herbicide resistance and produces, and reduces consumption, alleviates the pollution to environment, and reduces use cost.
The inventor conducts in-depth research mesotrione, cyclic imide class weed killer herbicide, conventional herbicide for paddy field Ternary; Wherein cyclic imide class weed killer herbicide comprises oxadiazon, oxadiargyl or pentoxazone, conventional herbicide for paddy field comprises bensulfuron-methyl, pyrazosulfuron, pyriftalid, the third careless amine, butachlor, mefenacet, penoxsuam, prometryn and symetryne, research shows the Ternary of this three classes weed killer herbicide, within the scope of certain mix ratio row, paddy field annual weed is had to synergy or summation action.Composite Herbicidal combinations there is not yet report in the application in paddy field above.
Summary of the invention
The limitation and difficult anti-, pernicious, the resistant weed that the object of the invention is to solve single dose controlling object in current paddy field weeding technology are prevented and treated problem, efficient, low toxicity, economy are provided, easy to use, quick-acting good, the lasting period is long, is conducive to the Herbicidal combinations of the annual and perennial weeds comprehensive regulation in rice field.
The invention provides a kind of herbicide for paddy field composition, comprise active component: mesotrione A, cyclic imide class weed killer herbicide B and herbicide for paddy field C; Described cyclic imide class weed killer herbicide B is selected from oxadiazon, oxadiargyl or pentoxazone, and described herbicide for paddy field C is selected from bensulfuron-methyl, pyrazosulfuron, pyriftalid, the third careless amine, butachlor, mefenacet, penoxsuam, prometryn or symetryne.
In a kind of embodiment, the preferred oxadiazon of described cyclic imide class weed killer herbicide B or pentoxazone.
In a kind of embodiment, the preferred bensulfuron-methyl of described herbicide for paddy field C, pyrazosulfuron, the third careless amine or prometryn.
In a kind of embodiment, described herbicide for paddy field C is the third careless amine more preferably.
In a kind of embodiment, the ratio that the each active component in described Herbicidal combinations accounts for respectively gross weight is: mesotrione A is 0.02～15%, and cyclic imide class weed killer herbicide B is 1～25%, and 0.1～40%.
In a kind of embodiment, the ratio that the each active component in described Herbicidal combinations accounts for respectively gross weight is: mesotrione A is 0.02～8%, and cyclic imide class weed killer herbicide B is 2～25%, and 0.1～35%.
In a kind of embodiment, the ratio that the each active component in described Herbicidal combinations accounts for respectively gross weight is: mesotrione A is 0.05～8%, and cyclic imide class weed killer herbicide B is 2～20%, and 0.25～35%.
In a kind of embodiment, described Herbicidal combinations is formulated as granule, effervescent tablet, water dispersible granules, suspending agent, wetting powder, soluble liquid, missible oil, aqueous emulsion, microemulsion, aqua or film-spreading oil solution.
In a kind of embodiment, it is characterized in that, said composition is formulated as granule, suspending agent, wetting powder or water dispersible granules.
In a kind of embodiment, described Herbicidal combinations is prevented and treated annual and perennial grassy weed, broad leaved weed and sedge weed for paddy field.
The present invention program possesses following remarkable result and advantage: first, the present composition shows for paddy field cut weeds obvious synergy or summation action in certain ratio range, the successful of preventing and kill off paddy field annual weed is better than each single dose, expanded herbicidal spectrum, reduced dosage, reduce drug cost, reduced the adverse effect of agricultural chemicals to ecotope; Delay herbicide resistance; Secondly because the mechanism of action of the each active ingredient in composition is different, reduced the risk of weeds generation resistance; In addition composition quick-acting of the present invention is good, and the lasting period is long, easy to use, saves labor.
Technology origin of the present invention: for further understanding the co-toxicity effect of composite Herbicidal combinations to weeds, the inventor has carried out formula indoor screening test to complex composition.
Test material:
Barnyard grass [Echinochloa crusgalli (L.) Beaw Setaria] (field gathers in seed chamber and preserves)
Monochoria vaginalis [Monochoria vaginalis] (field gathers in seed chamber and preserves)
Liquid configuration:
Mesotrione solution allocation: the former medicine of mesotrione that accurately claims 0.0214g95%, use 0.2ml N, dinethylformamide (also can be called for short DMF, identical below) dissolve, add the aqueous solution 400ml that contains 0.1% Tween 80 emulsifier, stir, (a.i./ha is the usual concentration unit in this area to be configured to 80g a.i./ha, refer to the amount of per hectare active ingredient used, below identical) mesotrione solution, then be diluted to 40,20g a.i./ha concentration solution for standby.
Oxadiazon solution allocation: the former medicine of oxadiazon that accurately claims 0.0642g95%, with 0.2ml DMF dissolving, add the aqueous solution 400ml that contains 0.1% Tween 80 emulsifier, stir, be configured to 240g a.i./ha oxadiazon solution, then be diluted to 120,80g a.i./ha concentration solution for standby.
The third careless amine aqueous solution configuration: the former medicine of the third careless amine that accurately claims 0.0802g95%, with 0.2ml DMF dissolving, add the aqueous solution 400ml that contains 0.1% Tween 80 emulsifier, stir, be configured to the careless amine aqueous solution of 300g a.i./ha third, then be diluted to 180,100g a.i./ha concentration solution for standby.
Test method: adopt potted plant facture.At the in-built quantitative soil of polypots of high 6cm, diameter 9cm, will, for 15～20 sowings of examination target weed seed in polypots, cover fine earth 0.5～1cm and be placed on cultivation in greenhouse, be cultured to dew bud standby.The liquid medicine jet of above-mentioned series concentration is imposed on to polypots soil surface, and every processing repeats 4 times, with pastille not, is treated to contrast.Processing is placed in greenhouse and cultivates, growing state and the survival condition of routine observation target weeds, process and within latter 21 days, observe target weeds be injured symptom and growth inhibition situation, and take acrial part fresh weight, calculate actual weeds survival rate, evaluate the toxicity action of medicament to target weeds.
Investigation method: process and observe target weeds be injured symptom and the suppressed situation of growing for latter 21 days, take acrial part fresh weight, calculate actual weeds survival rate (%).
Synergy evaluation method:
Adopt Colby method to evaluate weed killer herbicide mode of application (NY/T1155.7-2006), its formula is as follows:
E
0=X×Y×Z/100
2
In formula, X is the survival rate of mesotrione target weeds when alone with certain dosage; Y is the survival rate of oxadiazon (pentoxazone) target weeds when alone with certain dosage; Z is the survival rate of the third careless amine target weeds when alone with certain dosage; E
0for the theoretical value of mesotrione, oxadiazon (pentoxazone), the third careless amine three target weeds survival rate when mixed, E is the measured value of mesotrione, oxadiazon (pentoxazone), the third careless amine three target weeds survival rate when mixed.
Evaluation criterion: if E
0-E <-10% is expressed as antagonism, if-10%≤E
0-E≤10% is expressed as summation action, if E
0-E > 10% is expressed as synergistic effect.
Table 1 mesotrione, oxadiazon, the third careless amine and mixture thereof combine the toxicity test result to barnyard grass
Evaluating drug effect: mesotrione, oxadiazon, the third careless amine and mixture composition thereof the results are shown in Table 1 to the indoor Herbicidal of barnyard grass.Result shows, mesotrione, oxadiazon and the third careless amine all show synergy or summation action for all proportionings of examination, wherein the most obvious to the synergistic effect of barnyard grass with the careless amine 40+80+180 of mesotrione+oxadiazon+the third mixture composition, its E
0-E value is 17.57%.
Table 2 mesotrione, oxadiazon, the third careless amine and mixture thereof combine the toxicity test result to Monochoria vaginalis
Evaluating drug effect: mesotrione, oxadiazon, the third careless amine and mixture composition thereof the results are shown in Table 2 to the indoor Herbicidal of Monochoria vaginalis.Result shows, mesotrione, oxadiazon and the third careless amine all show synergy or summation action for all proportionings of examination, wherein the most obvious to the synergistic effect of barnyard grass with the careless amine 40+80+180 of mesotrione+oxadiazon+the third mixture composition, its E
0-E value is 15.71%.
Table 3 mesotrione, pentoxazone, the third careless amine and mixture thereof combine the toxicity test result to barnyard grass
Evaluating drug effect: mesotrione, pentoxazone, the third careless amine and mixture composition thereof the results are shown in Table 3 to the indoor Herbicidal of barnyard grass.Result shows, mesotrione, pentoxazone and the third careless amine all show synergy or summation action for all proportionings of examination, wherein the most obvious to the synergistic effect of barnyard grass with the careless amine 40+80+180 of mesotrione+pentoxazone+the third mixture composition, its E
0-E value is 17.84%.
Table 4 mesotrione, pentoxazone, the third careless amine and mixture thereof combine the toxicity test result to Monochoria vaginalis
Evaluating drug effect: mesotrione, pentoxazone, the third careless amine and mixture composition thereof the results are shown in Table 4 to the indoor Herbicidal of Monochoria vaginalis.Result shows, mesotrione, pentoxazone and the third careless amine all show synergy or summation action for all proportionings of examination, wherein the most obvious to the synergistic effect of barnyard grass with the careless amine 40+80+180 of mesotrione+pentoxazone+the third mixture composition, its E
0-E value is 15.94%.
Embodiment
Composition of the present invention is when preparation, can be according to method known in those skilled in the art (for example, at < < formulations of pesticide process technology > >, Liu Bulin chief editor, the preparation processing method relating in second edition, is hereby incorporated by).
While being mixed with suspending agent, auxiliary agent comprises: one or more in dispersant, wetting agent, thickener, preservative, defoamer, antifreezing agent and water.
Wherein, dispersant is selected from one or more in polycarboxylate salt dispersant, rosin based dispersant, phosphoric acid ester dispersant, macromolecule emulsion dispersant, alkyl naphthalene sulfonic acid condensation polymer sodium salt, alkylnaphthalene sulfonate condensation polymer, ethyoxyl triphenylethylene phenol phosphate, organophosphorus compounds, comb type high-molecular copolymer, polyoxyethylene aryl ether, polyoxyethylene aryl phenyl ether phosphoric acid amine salt and styrene phenol polyoxyethylene anionic dispersing agents.Consumption is the 1-8% of total formulation weight amount, preferably 3-6%.
Wetting agent is selected from one or more in the poly-base ether formaldehyde condensation products sulphate of alkylphenol-polyethenoxy, aryl sulfonate formaldehyde condensates, alkylnaphthalene sulfonate and anion wetting agent mixture, isopropyl naphthalene sodium sulfonate, normal-butyl naphthalene sulfonate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, sulfosuccinate, ethoxy alcohol, block copolymer, polyxyethylated alcohol and fatty alcohol-polyoxyethylene ether.Consumption is the 1-6% of total formulation weight amount, preferably 2-4%.
Thickener is selected from one or more in xanthans, aluminium-magnesium silicate and bentonite.Consumption is the 0.1-10% of total formulation weight amount, preferably 1-5%.
Preservative is selected from one or more in benzoic acid, Sodium Benzoate and BIT (BIT is the abbreviation of BIT).Consumption is the 0.1-10% of total formulation weight amount, preferably 0.2-2%.
Defoamer is silicone based defoamer.Consumption is the 0.1-10% of total formulation weight amount, preferably 0.4-1.0%.
Antifreezing agent is selected from ethylene glycol, propane diols, glycerine, urea and inorganic salts as one or more in sodium chloride.Consumption is the 0.1-10% of total formulation weight amount, preferably 1-5%.
Surplus is water.
When being mixed with wetting powder, auxiliary agent comprises: dispersant, wetting agent and filler.
Wherein, dispersant is selected from one or more in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate and alkylnaphthalene sulfonate formaldehyde condensation products.Consumption is the 1-10% of total formulation weight amount, preferably 3-7%;
Wetting agent is selected from one or more in alkyl sulfate, alkylsulfonate and naphthalene sulfonate.Consumption is the 1-10% of total formulation weight amount, preferably 3-7%;
All the other are filler, are selected from one or more in diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite and potter's clay etc.
When being mixed with water dispersible granules, auxiliary agent comprises dispersant, wetting agent, disintegrant, binding agent and filler.
Wherein, dispersant is selected from one or more in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate and alkylnaphthalene sulfonate formaldehyde condensation products.Consumption is the 1-10% of total formulation weight amount, preferably 3-7%.
Wetting agent is selected from one or more in polyoxyethylene alcohol, alkyl sulfate, alkylsulfonate and naphthalene sulfonate etc.Consumption is the 1-10% of total formulation weight amount, preferably 2-7%.
Disintegrant is selected from one or more in ammonium sulfate, urea, sucrose, glucose, citric acid, succinic acid and sodium bicarbonate.Consumption is the 0.1-10% of total formulation weight amount, preferably 1-5%.
Binding agent is selected from one or more in diatomite, corn starch, PVA (polyvinyl alcohol), carboxymethyl (ethyl) cellulose family and microcrystalline cellulose class.Consumption is the 0.1-10% of total formulation weight amount, preferably 1-5%.
All the other are filler, are selected from one or more in diatomite, kaolin, white carbon, fine particle calcium carbonate, sepiolite, talcum powder, attapulgite and potter's clay etc.
When be mixed with dispersible oil suspend time, auxiliary agent comprises dispersant, wetting agent, thickener, preservative, defoamer, antifreezing agent and grease auxiliary agent.
Wherein, dispersant is selected from one or more in polycarboxylate salt dispersant, rosin based dispersant, phosphoric acid ester dispersant, macromolecule emulsion dispersant, alkyl naphthalene sulfonic acid condensation polymer sodium salt, alkylnaphthalene sulfonate condensation polymer, ethyoxyl triphenylethylene phenol phosphate, organophosphorus compounds, comb type high-molecular copolymer, polyoxyethylene aryl ether, polyoxyethylene aryl phenyl ether phosphoric acid amine salt and styrene phenol polyoxyethylene anionic dispersing agents.Consumption is the 1-8% of total formulation weight amount, preferably 3-6%.
Wetting agent is selected from one or more in the poly-base ether formaldehyde condensation products sulphate of alkylphenol-polyethenoxy, aryl sulfonate formaldehyde condensates, alkylnaphthalene sulfonate and anion wetting agent mixture, isopropyl naphthalene sodium sulfonate, normal-butyl naphthalene sulfonate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, sulfosuccinate, ethoxy alcohol, block copolymer, polyxyethylated alcohol and fatty alcohol-polyoxyethylene ether.Consumption is the 1-6% of total formulation weight amount, preferably 2-4%.
Thickener is selected from one or more in xanthans, aluminium-magnesium silicate and organobentonite.Consumption is the 0.1-10% of total formulation weight amount, preferably 1-5%.
Preservative is selected from one or more in benzoic acid, Sodium Benzoate and BIT (BIT).Consumption is the 0.1-10% of total formulation weight amount, preferably 0.2-2%.
Defoamer is silicone based defoamer.Consumption is the 0.1-10% of total formulation weight amount, preferably 0.4-1.0%.
Antifreezing agent is selected from ethylene glycol, propane diols, glycerine, urea and inorganic salts as one or more in sodium chloride.Consumption is the 0.1-10% of total formulation weight amount, preferably 1-5%.
All the other are grease analog assistant, are selected from one or more in methyl oleate, vegetable oil, animal wet goods.
Embodiment
In order to make object of the present invention, technical scheme and advantage more short and sweet, the present invention describes with following concrete embodiment, but the present invention only limits to absolutely not these examples.The following stated is only the good embodiment of the present invention, only for describing the present invention, can not be interpreted as the restriction to scope of invention.It should be pointed out that all any modifications of making within the spirit and principles in the present invention, be equal to and replace and improve, within being all included in protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.In these embodiments, unless otherwise indicated, all percentage is all weight percentage.
It is 16% the careless amine granule of mesotrione oxadiazon third that embodiment 1. prepares active ingredient total concentration (abbreviation total concentration)
Above-mentioned material is added in mixer and mixed; through airslide disintegrating mill, pulverize; material after pulverizing mixes through mixer again; make fineness of materials 98% by the wetting powder of 325 mesh standard sieves; dropped into comminutor again and add water granulation, drying, screening, the total concentration that makes such as cooling are 16% the careless amine granule of mesotrione oxadiazon third.
It is 2.75% mesotrione pentoxazone bensulfuron-methyl granule that embodiment 2. prepares total concentration
Above-mentioned material is added in mixer and mixed; through airslide disintegrating mill, pulverize; material after pulverizing mixes through mixer again; make fineness of materials 98% by the wetting powder of 325 mesh standard sieves; dropped into comminutor again and add water granulation, drying, screening, the total concentration that makes such as cooling are 2.75% mesotrione pentoxazone bensulfuron-methyl granule.
It is 16% the careless amine oil-suspending agent of mesotrione oxadiazon third that embodiment 3. prepares total concentration
Above-mentioned material is pulverized in proportion in advance, added in sand mill and grind, after high shear mixing, make total concentration and be 16% the careless amine oil-suspending agent of mesotrione oxadiazon third.
It is 56% mesotrione pentoxazone prometryn wetting powder that embodiment 4. prepares total concentration
Above-mentioned material is added in cone-type mixer and mixed together in proportion, through airslide disintegrating mill, pulverize, material after pulverizing mixes through cone-type mixer again, mixed fineness of materials 98% is by 325 mesh standard sieves, obtains total concentration and be 56% mesotrione pentoxazone prometryn wetting powder.
It is 30% the careless amine suspending agent of mesotrione pentoxazone third that embodiment 5. prepares total concentration
Above-mentioned material is pulverized in proportion in advance, added in sand mill and grind, after high shear mixing, make total concentration and be 30% the careless amine suspending agent of mesotrione pentoxazone third.
It is 30.5% mesotrione pentoxazone pyrazosulfuron suspending agent that embodiment 6. prepares total concentration
Above-mentioned material is pulverized in proportion in advance, added in sand mill and grind, after high shear mixing, make total concentration and be 30.5% mesotrione pentoxazone pyrazosulfuron suspending agent.
It is 60% the careless amine water dispersible granules of mesotrione oxadiazon third that embodiment 7. prepares total concentration
It is 60% the careless amine water dispersible granules of mesotrione oxadiazon third that the ultra-fine grinding in proportion of above-mentioned material, granulation, dry, screening are made to total concentration.
field control effectiveness test 1: the field control effectiveness test of preventing and kill off direct-sowing dry weeds in paddy field
7 kinds of composite Herbicidal combinations such as reagent agent: embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5, embodiment 6, embodiment 7.
Contrast medicament: 10% mesotrione oil-suspending agent, 25% oxadiazon missible oil, 90g/L Huan Wu Evil humulone suspending agent, the 30% the third careless amine missible oil, 10% bensulfuron-methyl wetting powder, 10% pyrazosulfuron wetting powder, 25% prometryn wetting powder.
For studying thing: paddy rice, kind is No. 1, peaceful round-grained rice.
Controlling object: direct-sowing dry rice field main weeds, as barnyard grass, Monochoria vaginalis, difformed galingale herb, angustifolia arrowhead herb etc.
Test method: paddy rice is broadcast dispenser before rear seedling, after rice growing after seed rice suctions moisture, draining dispenser.Granule adopts and spreads fertilizer over the fields mode dispenser by experimental scheme dosage, and other dosage formulation adopt the dispenser of soil spray pattern by experimental scheme dosage, keep furrow face moistening not arid after dispenser, rice shoot tri-leaf period, sets up water layer, carries out conventional rich water quality management.Blank is set simultaneously.
Pilot survey: 30 days investigation weeds death condition after dispenser, record each processing remaining weeds strain number and measure weeds fresh weight, calculate strain preventive effect and fresh weight preventive effect.After medicine, in 1～15 day, observe impact and the medicament of medicament on paddy growth whether paddy rice is produced to poisoning.
Result of the test: in Table 5 and table 6 by result of the test, can be found out, after dispenser 30 days, the preventive effect excellence of 7 kinds of mixture Herbicidal combinations of the present invention to direct-sowing dry paddy field weed, the total strain preventive effect of weeds and total fresh weight preventive effect are all more than 90%, strain preventive effect to weeds such as barnyard grass, Monochoria vaginalis, difformed galingale herb, angustifolia arrowhead herbs and fresh weight preventive effect are all more than 90%, mixture combination has obvious synergistic effect, is obviously better than mesotrione, oxadiazon, Huan Wu Evil humulone, the third careless amine, bensulfuron-methyl, pyrazosulfuron, the processing of prometryn single dose.In process of the test, each medicament is showed no poisoning generation, to rice safety, is to prevent and kill off at present the good novel combination weed killer herbicide of direct sowing rice weed effect.
The composite Herbicidal combinations of table 5 to direct-sowing dry weeds in paddy field medicine after the control efficiency of 30 days
The composite Herbicidal combinations of table 6 to several main weeds medicines in direct-sowing dry rice field after the control efficiency of 30 days
field control effectiveness test 2: the field control effectiveness test of preventing and kill off transplanting rice weed
7 kinds of composite Herbicidal combinations such as reagent agent: embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5, embodiment 6, embodiment 7.
Contrast medicament: 10% mesotrione oil-suspending agent, 25% oxadiazon missible oil, 90g/L Huan Wu Evil humulone suspending agent, the 30% the third careless amine missible oil, 10% bensulfuron-methyl wetting powder, 10% pyrazosulfuron wetting powder, 25% prometryn wetting powder.
For studying thing: paddy rice, kind is imperial round-grained rice 12.
Controlling object: transplanting rice weed, main weeds has barnyard grass, firefly Lin, Monochoria korsakowii, angustifolia arrowhead herb etc.
Test method: dispenser in 5 days after rice transplanting.Granule adopts and spreads fertilizer over the fields mode dispenser by experimental scheme dosage, and other dosage formulation adopt spray pattern dispenser by experimental scheme dosage, keep field water layer 3-5cm, water conservation 5-7 days after dispenser during dispenser.Blank is set simultaneously.
Pilot survey: 30 days investigation weeds death condition after dispenser, record each processing remaining weeds strain number and measure weeds fresh weight, calculate strain preventive effect and fresh weight preventive effect.After medicine, in 1～15 day, observe impact and the medicament of medicament on paddy growth whether paddy rice is produced to poisoning.
Result of the test: in Table 7 and the preventive effect excellence of table 87 kinds of mixture Herbicidal combinations of the present invention to transplanting rice weed, the total strain preventive effect of weeds and total fresh weight preventive effect are all more than 95%, strain preventive effect to main weeds such as barnyard grass, firefly Lin, Monochoria korsakowii, angustifolia arrowhead herbs and fresh weight preventive effect are all more than 90%, mixture combination has obvious synergistic effect, is obviously better than mesotrione, oxadiazon, Huan Wu Evil humulone, the third careless amine, bensulfuron-methyl, pyrazosulfuron, the processing of prometryn single dose.In process of the test, each medicament is showed no poisoning generation, to rice safety, is to prevent and kill off at present the good novel combination weed killer herbicide of transplanting rice weed effect.
The composite Herbicidal combinations of table 7 to transplanting rice weed medicine after the control efficiency of 30 days
30 days control efficiency to transplanting rice field main weeds after the composite Herbicidal combinations medicine of table 8
Claims (10)
1. a herbicide for paddy field composition, is characterized in that, comprises active component: mesotrione A, cyclic imide class weed killer herbicide B and herbicide for paddy field C; Described cyclic imide class weed killer herbicide B is selected from oxadiazon, oxadiargyl or pentoxazone, and described herbicide for paddy field C is selected from bensulfuron-methyl, pyrazosulfuron, pyriftalid, the third careless amine, butachlor, mefenacet, penoxsuam, prometryn or symetryne.
2. herbicide for paddy field composition according to claim 1, is characterized in that, described cyclic imide class weed killer herbicide B is selected from oxadiazon or pentoxazone.
3. herbicide for paddy field composition according to claim 1, is characterized in that, described herbicide for paddy field C is selected from bensulfuron-methyl, pyrazosulfuron, the third careless amine or prometryn.
4. herbicide for paddy field composition according to claim 1, is characterized in that, described herbicide for paddy field C is the third careless amine.
5. according to the herbicide for paddy field composition described in claim 1-4 any one, it is characterized in that, the ratio that described each active component accounts for respectively gross weight is: mesotrione A is 0.02～15%, and cyclic imide class weed killer herbicide B is 1～25%, and 0.1～40%.
6. herbicide for paddy field composition according to claim 5, is characterized in that, the ratio that described each active component accounts for respectively gross weight is: mesotrione A is 0.02～8%, and cyclic imide class weed killer herbicide B is 2～25%, and 0.1～35%.
7. herbicide for paddy field composition according to claim 6, is characterized in that, the ratio that described each active component accounts for respectively gross weight is: mesotrione A is 0.05～8%, and cyclic imide class weed killer herbicide B is 2～20%, and 0.25～35%.
8. according to the herbicide for paddy field composition described in claim 1-4 any one, it is characterized in that, said composition is formulated as granule, effervescent tablet, water dispersible granules, suspending agent, wetting powder, soluble liquid, missible oil, aqueous emulsion, microemulsion, aqua or film-spreading oil solution.
9. herbicide for paddy field composition according to claim 8, is characterized in that, said composition is formulated as granule, suspending agent, wetting powder or water dispersible granules.
10. according to the herbicide for paddy field composition described in claim 1-4 any one, it is characterized in that, described herbicidal composition is prevented and treated annual and perennial grassy weed, broad leaved weed and sedge weed for paddy field.
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| CN104904725A (en) * | 2014-03-12 | 2015-09-16 | 浙江省化工研究院有限公司 | Weeding composition containing mesotrione and pentoxazone |
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| CN107683856A (en) * | 2017-09-19 | 2018-02-13 | 浙江天丰生物科学有限公司 | Ternary Herbicidal composition for paddy fields |
| CN109362743A (en) * | 2018-11-19 | 2019-02-22 | 安徽远景作物保护有限公司 | A kind of Herbicidal combinations and its application containing symetryne |
| CN111226953A (en) * | 2020-03-08 | 2020-06-05 | 安徽喜田生物科技有限公司 | Weeding composition containing oxadiargyl and simetryn |
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