CN107372560A

CN107372560A - A kind of herbicidal composition of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron

Info

Publication number: CN107372560A
Application number: CN201710660094.9A
Authority: CN
Inventors: 李冰清; 李玉洁
Original assignee: Anhui Saint Fung Biochemical Co Ltd
Current assignee: Anhui Saint Fung Biochemical Co Ltd
Priority date: 2017-08-04
Filing date: 2017-08-04
Publication date: 2017-11-24

Abstract

The invention discloses the herbicidal composition of a kind of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron.Three's weight ratio is (3~99)：(1~9.9)：(9~99), preferred weight ratio are (6~9)：(3~6)：(11~22)；The cumulant of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron is the 1%~88% of composition total weight, and preferable accounting is 9%~25%.The present invention to the component of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron in herbicidal composition by carrying out rational proportion, so that the preventive effect of this herbicidal composition is more preferably, preventive effect is significantly better than activity when each component is administered alone, expand the control of weeds spectrum of direct sowing rice field simultaneously, the dosage of agricultural chemicals is reduced, alleviates the pollution to environment.

Description

A kind of herbicidal composition of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron

Technical field

The present invention relates to the herbicidal composition of a kind of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron, and in particular to A kind of herbicide for being used to prevent and treat direct seading rice field annual grassy weeds and barnyard grass, it is by pyribenzoxim, dichloro quinolinic acid Ternary herbicidal composition with pyrazosulfuron for activity composition.

Background technology

From or so nineteen fifty large-area applications 2,4-drop, since the chlorine of 2 first 4 prevents and kill off rice terrace broad leaved weed, rice terrace is with removing Careless agent kind is developed rapidly, and kind is updated, and has successively emerged in large numbers diphenyl ether, thiocarbamates, amide-type, quinoline The herbicides such as carboxylic acids, sulfonylurea, the more perfect Chemical Weeding System for being adapted to rice different planting is formd, As indispensable, highly important well stimulation in Rice Production.

But as numerous herbicide kinds persistently use in rice terrace large area, also produce the problem of many：1. weeds Resistance protrudes, wherein it is more prominent to the resistance of propanil, dichloro quinolinic acid, dichloro quinolinic acid, benthiocarb with barnyard grass, recently, footpath between fields Serve, firefly Lin, angustifolia arrowhead herb, Monochoria korsakowii, the common weed such as Cyperaceae, Pontederiaceae, the Alismataceae such as different in nature nutgrass flatsedge grass is to sulfonylureas Class herbicide generates resistance, makes weeding problem more complicated.2. perennial weeds harm turns into major issue, particularly Cyperaceae Perennial weeds is more prominent.3. advanced age barnyard grass and the problem of preventing and kill off of Procumbent Falsepimpernel need to solve.4. the herbicide controlling spectrum of herbicide kind has Wait to expand, and extend the lasting phase that soil prevents and kill off medicament.5. for wide spectrum, selectivity herbicide kind strong, easy to use Demand is more urgent.

Pyribenzoxim is novel oxime ester compound, wide spectrum selective post-emergence herbicide.Mechanism of action and sulfonylureas Class and the slow-witted type herbicides of imidazoles are similar, belong to acetolactate synthestase (ALS) inhibitor.To rice, common wheat, Korea lawn grass With activity of weeding after selective ultra high efficiency bud, activity of weeding before no bud is each for preventing and kill off barnyard grass, big fringe amur foxtail, polygonum flaccidum etc. Kind grassy weed and miscellaneous stroke of effect of broad-leaved are distinguished, to rice, common wheat safety.Chemical weeding speed is slower, energy after dispenser Suppress weed growth.

The classical symptom that Quinclorac on Rice Plants produces poisoning is that the seedlings of cereal crops green onion heart seedling occur (vertical roll up of lobus cardiacus simultaneously heals into green onion Tubulose, the expansion of leaf tip multipotency), leaf color is more normal；Newborn blade can not be extracted out because of top organization healing, peel off stalk, can See young leaves curls inward.It is upright that aggrieved serious rice shoot lobus cardiacus is curled into green onion tubulose, is transplanted to generally withered behind crop field；If can be into Living, the suckering plant formed is also deformity, and some even whole clump rice strains are withered.The light rice shoot of poisoning, basal part of stem expand, become Firmly, become fragile, lobus cardiacus narrows and is twisted into deformity, but is transplanted to the suckering plant grown behind crop field still normal growth.

Pyrazosulfuron physicochemical property：Active compound outward appearance is beige crystals.Fusing point：181~182 DEG C.Vapour pressure (25 DEG C)： 0.0147mPa.Solubility (mg/L, 20 DEG C)：Water 4.5, acetone 3.17 × 10, chloroform 2.34 × 10, ethane 0.2 × 10, methanol 0.7×10.Stability：It can stablize half a year under the conditions of 50 DEG C, it is stable to light.Pyrazosulfuron belongs to sulfonylurea herbicide, is Selective inner-adsorption conduction-type herbicide, mainly absorbed by root system, shifted rapidly in weeds plant body, suppress growth, it is miscellaneous It is careless gradually dead.Rice can decompose the medicament, and paddy growth is had little to no effect.

In actual use, when pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron are used alone, to direct sowing rice field Nakedflower triquetrousc murdannia herb, Procumbent Falsepimpernel, lady's-grass, the drug effect of eleusine indica etc. be not very notable.Therefore, inventor is careless by pyrimidine oxime Ether, dichloro quinolinic acid and pyrazosulfuron carry out rational mixture, and discovery has notable synergy, expand control of weeds spectrum, a dispenser Direct seading rice field grass family, Cyperaceae and broad leaved weed are prevented and kill off, spraying times is reduced, reduces the effect of cost accounting.

The content of the invention

It is an object of the invention to provide the combinations of herbicides of a kind of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron Thing, there is provided a kind of reasonable mixture ratio, anti-herbicidal spectrum is wide, reduces manpower, drug cost is low, and it is phonetic that weeds are not likely to produce drug-fast one kind The herbicidal composition of pyridine oxime grass ether, dichloro quinolinic acid and pyrazosulfuron.

Another object of the present invention is to provide above-mentioned composition to be used to prevent and kill off direct seading rice field and rice seedling bed, rice transplanting Purposes in rice terrace and transplanting rice field grassy weed, broad leaved weed and sedge weed.

The defects of in order to overcome existing unitary agent, skill scheme of the invention so solve：

The present invention be a kind of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron herbicidal composition, containing it is active into Pyribenzoxim, the dichloro quinolinic acid containing active component and the pyrazosulfuron containing active component divided, three's weight ratio are (3~99)：(1~9.9)：(9~99)；Further, the weight ratio of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron three For (6~9)：(3~6)：(11~22).

The cumulant of the active component of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron is the composition total weight 1%~88%；Further, the cumulant of the active component of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron is described group The 9%~25% of compound gross weight.

According to method known in those skilled in the art, a kind of pyribenzoxim of the present invention, dichloro quinolinic acid and pyrrole are phonetic Any formulation agriculturally allowed can be configured to during the grand herbicidal composition practical application of sulphur, preparation formulation is water-dispersible grain Agent, wettable powder, pulvis, granule, suspending agent, dispersible oil-suspending agent.

For suspending agent, dispersible oil-suspending agent, those skilled in the art are very familiar with completing using corresponding auxiliary agent The present invention.

To suspending agent, workable auxiliary agent has：Dispersant be selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, TERSPERSE2425 (Huntsman Corporation of the U.S. produces, alkyl naphthalene sulfonic acid salt)；Emulsifying agent such as Nongru-700 # (common names：Alkyl Fluosite APEO), agriculture breast 2201, this disk -60# (common names：Sorbitan monostearate), emulsifying agent T- 60 (common names：Sorbitan monostearate APEO), agriculture breast 1601# (common names：Phenethyl phenol polyoxyethylene Polyethenoxy ether), TERSPERSE4894 (Huntsman Corporation of U.S. product)；Wetting agent is selected from alkylphenol-polyethenoxy Ji Mijia Aldehyde condensate sulfate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyoxyethylene groups ether phosphate, alkylsurfuric acid Salt, alkylsulfonate, naphthalene sulfonate, TERSPSE2500 (Huntsman Corporation of U.S. product)；Thickener is selected from xanthans, poly- second Enol, bentonite, aluminium-magnesium silicate；Preservative is selected from formaldehyde, benzoic acid, sodium benzoate；Defoamer is organic silicon defoamer；It is anti- Freeze agent and be selected from ethylene glycol, propane diols, glycerine, urea, inorganic salts (such as sodium chloride).

To dispersible oil-suspending agent, workable auxiliary agent has：Dispersant is selected from polycarboxylate, lignosulfonates, alkyl Naphthalene sulfonate, TERSPERSE2425；Emulsifying agent be selected from BY series emulsifying agent (BY-110, BY-125, BY-140), Nongru-700 #, Agriculture breast 2201, this disk -60#, Tween-60 #, agriculture breast 1601#, TERSPERSE4894；Wetting agent is selected from alkylphenol-polyethenoxy base Ether formaldehyde condensation products sulfate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyoxyethylene groups ether phosphate, alkyl sulfide Hydrochlorate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500；Thickener is selected from white carbon, polyvinyl alcohol, bentonite, silicic acid Magnalium；Antifreezing agent is selected from ethylene glycol, propane diols, glycerine, urea, inorganic salts (such as sodium chloride)；Stabilizer is selected from epoxy soybean Oil, epoxychloropropane, triphenyl phosphate；Decentralized medium be selected from soybean oil, rapeseed oil, corn oil, methyl oleate, diesel oil, machine oil, Mineral oil.

Further, herbicidal composition is preventing and kill off direct seading rice field and rice seedling bed, rice transplanting rice terrace and transplanting water Application between rice field in annual grassy weeds.

Further, it is that grassy weed, broad-leaved are miscellaneous that herbicidal composition, which is applied to direct seading rice field annual grassy weeds, Grass and sedge weed.

The invention has the advantages that：

1st, the present invention to the component of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron in herbicidal composition by entering Row rational proportion so that more preferably, preventive effect is significantly better than work when each component is administered alone to the preventive effect of this herbicidal composition Property, while expand the control of weeds spectrum of direct sowing rice field, the dosage of agricultural chemicals is reduced, alleviates the pollution to environment, is slowed down simultaneously The generation of Weed Resistance, it is good to crop safety, meet the security requirement of pesticidal preparations.

2nd, the present invention's is most of to direct seading rice field nakedflower triquetrousc murdannia herb, Procumbent Falsepimpernel, lady's-grass, eleusine indica, barnyard grass etc. straight Broadcasting paddy field weed all has preferable preventive effect and to Security of rice height.

Certainly, any product for implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.

Embodiment

Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, Obviously, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based in the present invention Embodiment, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of protection of the invention.

In order to prevent and treat rice terrace broad leaved weed, grassy weed and the sedge weed in agricultural production, inventor is with phonetic Pyridine oxime grass ether, dichloro quinolinic acid and pyrazosulfuron have carried out Toxicity Determination research, and specific method is carried out for indoor pot method Cauline leaf process, test reference《The part of farm-chemical indoor determination test rule herbicide the 9th》.

1.1 reagent agent

95% pyribenzoxim active compound；95% dichloro quinolinic acid active compound；95% pyrazosulfuron active compound.

1.2 for examination weeds

Nakedflower triquetrousc murdannia herb (category Commelina communis section)

Procumbent Falsepimpernel (drafts a document this Scrophulariaceae)

Barnyard grass (category grass family Echinochloa)

1.3 experimental design

The experiment sets 14 processing altogether, and wherein pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron set 2.0,5.0 respectively Grams/ha of 2 dosage processing, pyribenzoxim, dichloro quinolinic acid are mixed with pyrazosulfuron three to be set up separately：

2.0+2.0+2.0,2.0+2.0+5.0,5.0+2.0+2.0,5.0+2.0+5.0 gram/ha；

2.0+5.0+2.0,2.0+5.0+5.0,5.0+5.0+2.0,5.0+5.0+5.0 gram/ha；

14 dosage ratio processing, 1 auxiliary agent control is separately set, 15 processing is set altogether, is repeated four times.

1.4 test method

Medicament is using now with the current, after active compound uses dmso solution, adds the emulsifying agent of tween 82, it is female to prepare 10% Liquid.According to medicament characteristic, 3 dosage from high to low is set.

The culture of target weeds uses potted plant cultivation, with 11 × 12cm plastic tubs, the rice field of herbicide will be not used In the soil adopted back air-dry, fill basin after sieving, in basin at dry ground quantitative 4/5, soil pH value 7.0, the content of organic matter 1.2%.Will Each about 30 uniform program requests are in soil surface, blinding after nakedflower triquetrousc murdannia herb, Procumbent Falsepimpernel, the barnyard grass seed of last year field collection soak It is placed in greenhouse and cultivates after 2.5cm~1cm, 28~32 DEG C/18~25 DEG C of indoor temperature (d/n), after planting keeps ground moistening. Spray (ASS-1 type pesticide spraying systems, DG8203 in spray tower is put in weeds nakedflower triquetrousc murdannia herb, Procumbent Falsepimpernel, barnyard grass 3-5 leaves Shower nozzle, atomisation pressure 2.75MPA, spouting liquid 40kg/ mus), dispenser preserves 3cm water layers after one day, is placed in greenhouse and cultivates observation.

1.5 weedy rices and analysis method

Growth conditions, poisoning symptom and the poisoning degree of periodical visual inspection observation weeds, record symptom of chemical damage, after medicine after dispenser 14 days reasonability matched with 21 days type of action using the mixed medicament of Colby method evaluations, further discussion.

1.5.1 ocular estimate

After dispenser 14 days with ocular estimate investigation records activity of weeding, investigated using following grade scale：

1 grade：It is all dead；

2 grades：Equivalent to the 0-2.5% of blank district；

3 grades：Equivalent to the 2.6-5% of blank district；

4 grades：Equivalent to the 5.1-10% of blank district；

5 grades：Equivalent to the 10.1-15% of blank district；

6 grades：Equivalent to the 15.1-25% of blank district；

7 grades：Equivalent to the 25.1-35% of blank district；

8 grades：Equivalent to the 35.1-67.5% of blank district；

9 grades：Equivalent to the 67.6-100% of blank district；

1.5.2 growth inhibition assay

Clip respectively handles ground chlorenchyma at 21 days, using scales/electronic balance weighing, actual survival rate E is calculated, using public affairs Formula (2) calculates theoretical survival rate E0, is examined with Colby methods, the mixed synergy type to weeds of evaluation three.

The check plot weeds fresh weight (1) of actual survival rate E (%)=treatment region weeds fresh weight × 100/

Theoretical survival rate E0=XYZ/100 (n-1)

X represents that herbicide 1 is the Weed-control effect of pyribenzoxim

Y represents that herbicide 2 is the Weed-control effect of dichloro quinolinic acid

Z represents that herbicide 3 is the Weed-control effect of pyrazosulfuron

N represents that mixture herbicide kind is total (2)

As E-E0 ＞ 10%, illustrate to produce synergistic effect, as E-E0 ＜ -10%, illustrate to produce antagonism, work as E- E0 between ± 10% when, illustrate produce addition.

2 results and analysis

2.1 weeds death conditions

5 days after dispenser, the barnyard grass growth handled using pyribenzoxim single dose is slowed down, and nakedflower triquetrousc murdannia herb, Procumbent Falsepimpernel start There is yellow symptom to wither therewith until dead；The barnyard grass terminal bud of dispenser dichloroquinoline acid treatment in 7 days reddens, and starts dead, footpath between fields Serve, nakedflower fishscale bamboo phyllophor has the different degrees of symptom that reddens；The barnyard grass terminal bud of dispenser pyrazosulfuron processing in 8 days reddens, Start death, Procumbent Falsepimpernel, nakedflower fishscale bamboo phyllophor have the different degrees of symptom that reddens.

2.2 14 days visual observations after medicine

14 days after medicine, range estimation investigation is carried out to each-reason area weeds, it is as a result as follows：

The pyribenzoxim dichloro quinolinic acid pyrazosulfuron of table 1 uses the visual observation of 14 days nakedflower triquetrousc murdannia herbs after medicine with (level)

The pyribenzoxim dichloro quinolinic acid pyrazosulfuron of table 2 uses the visual observation (level) of 14 days Procumbent Falsepimpernels after medicine with

Pyribenzoxim dichloro quinolinic acid pyrazosulfuron	Ai.g/ha
		2.0+2.0+2.0	9
2.0+2.0+5.0	7
		5.0+2.0+2.0	5
5.0+2.0+5.0	4
		2.0+5.0+2.0	5
2.0+5.0+5.0	3
		5.0+5.0+2.0	2
5.0+5.0+5.0	1

The pyribenzoxim dichloro quinolinic acid pyrazosulfuron of table 3 uses the visual observation (level) of 14 days barnyard grasses after medicine with

21 days investigation results after 2.3 medicines

The pyribenzoxim dichloro quinolinic acid pyrazosulfuron of table 3 is mixed to the actual survival rate of nakedflower triquetrousc murdannia herb and theory Survival rate

The mixed virulence to nakedflower triquetrousc murdannia herb of pyribenzoxim, dichloro quinolinic acid, pyrazosulfuron：Pyribenzoxim is to nakedflower The preventive effect of triquetrousc murdannia herb is preferable, is the sensitive medicaments of weeds, dichloro quinolinic acid is general to the preventive effect of nakedflower triquetrousc murdannia herb, pyrazosulfuron pair The preventive effect of nakedflower triquetrousc murdannia herb is general, with the increase of pyribenzoxim, dichloro quinolinic acid, pyrazosulfuron dosage, to naked after using with The preventive effect of flower triquetrousc murdannia herb improves.Actual preventive effect difference is generally higher than 10% after using with as seen from Table 3, to nakedflower water after three is mixed The preventive effect of the leaf of bamboo is in synergistic effect.

The mixed actual survival rate and theory to Procumbent Falsepimpernel of the pyribenzoxim dichloro quinolinic acid pyrazosulfuron of table 4 is deposited Motility rate

The mixed virulence to Procumbent Falsepimpernel of pyribenzoxim, dichloro quinolinic acid pyrazosulfuron：Pyribenzoxim, dichloroquinoline Acid, pyrazosulfuron are general to the preventive effect of Procumbent Falsepimpernel, with the increase of pyribenzoxim, dichloro quinolinic acid, pyrazosulfuron dosage, mix Greatly improved with the rear preventive effect to Procumbent Falsepimpernel.Actual preventive effect difference after using with as seen from Table 4 is generally higher than 10%, and three uses with The preventive effect to Procumbent Falsepimpernel is in synergistic effect afterwards.

The mixed actual inhibiting rate to barnyard grass of the pyribenzoxim dichloro quinolinic acid pyrazosulfuron of table 5 and theoretical suppression Rate

The mixed virulence to barnyard grass of pyribenzoxim, dichloro quinolinic acid, pyrazosulfuron：Preventive effect of the pyribenzoxim to barnyard grass It is excellent, it is the susceptible weeds of medicament, dichloro quinolinic acid has stronger inhibitory action to barnyard grass, and pyrazosulfuron has stronger to barnyard grass Inhibitory action, with the increase of pyribenzoxim, dichloro quinolinic acid, pyrazosulfuron dosage, after using with to the preventive effect of barnyard grass significantly Improve.Actual preventive effect difference after using with as seen from Table 5 is more than 10%, is in synergistic effect to the preventive effect of barnyard grass after three is mixed.

As can be seen from the above test results, pyribenzoxim, dichloro quinolinic acid, pyrazosulfuron are used with, to nakedflower fishscale bamboo Leaf, Procumbent Falsepimpernel, barnyard grass are in synergistic effect, mixed to expand herbicide controlling spectrum, delay Weed Resistance, reduce pyribenzoxim and dichloro Quinolinic acid, both pyrazosulfurons single dose content, improve total preventive effect, reduce application cost, safer to crop, in production The two, which is used with, certain feasibility.

Example of formulations 1

Weigh 3% dichloro quinolinic acid, 1% pyribenzoxim, 9% pyrazosulfuron, 1.5%NNO, 1% TERSPERSE2500,2% emulsifying agent T-60,3% Nongru-700 #, 0.1% xanthans, the 5% the third ethanol, 2.5% formaldehyde, 0.3% Organic silicon defoamer, deionized water add to 100% parts by weight.Above-mentioned raw materials are blended, and high speed shear disperses 30min, with sand milling 13% pyribenzoxim dichloro quinolinic acid pyrazosulfuron suspending agent is made after being sanded in machine.

Example of formulations 2

Weigh 6% dichloro quinolinic acid, 2% pyribenzoxim, 18% pyrazosulfuron, 3% Nongru-700 #, 2% agriculture breast 1601#, 1.5%TERSPERSE2500,2.5%TERSPERSE2425,0.2% xanthans, 3% white carbon, 5% ethylene glycol, 0.3% benzoic acid, 2.5% organic silicon defoamer, deionized water add to 100% parts by weight.Above-mentioned raw materials are blended, high speed shear Scattered 30min, is made 26% pyribenzoxim dichloro quinolinic acid pyrazosulfuron suspending agent after being sanded with sand mill.

Example of formulations 3

Weigh 8% dichloro quinolinic acid, 4% pyribenzoxim, 12% pyrazosulfuron, 2% dispersing agent NNO, 3% agriculture breast 2201#, 8%BY-110,1%TERSPERSE2500,1% aluminium-magnesium silicate, 3% propane diols, 15% epoxidized soybean oil, soybean oil Add to 100% parts by weight.Above-mentioned raw materials are blended, and high speed shear disperses 30min, and 24% pyrimidine oxime is made after being sanded with sand mill The careless dispersible oil-suspending agent of ether dichloro quinolinic acid pyrazosulfuron.

Biological examples：Prevent and kill off direct seading rice weeds field control effectiveness test

Inventor has carried out 9% pyribenzoxim dichloro on July 1st, 2012 in Jiaxing City, Zhejiang Province rice direct seeding field Experiment of quinolinic acid pyrazosulfuron (8%+4%+12%) the dispersible oil-suspending agent to paddy field weed.Field main weeds have Eclipta prostrata, Monochoria korsakowii, nakedflower triquetrousc murdannia herb, difformed galingale herb and Procumbent Falsepimpernel, weed size is in the 2-4 leaf phases.Test medicine and dosage are The dispersible oil-suspending agent 15g/ mus of 24% pyribenzoxim dichloro quinolinic acid pyrazosulfuron, 30g/ mus, 25g/ rise pyrimidine oxime The careless dispersible oil suspending agent 60ml/ mus of ether, 25% dichloro quinolinic acid wettable powder 15g/ mus, 25% pyrazosulfuron wettable powder 15g/ mus.Using conventional spray-on process.

The dispersible oil-suspending agent of pyribenzoxim dichloro quinolinic acid pyrazosulfuron of table 6 24% is miscellaneous to rice direct seeding field Careless preventive effect

The dispersible oil-suspending agent of pyribenzoxim dichloro quinolinic acid pyrazosulfuron of table 7 24% is miscellaneous to rice direct seeding field Careless preventive effect

The dispersible oil suspending agent of pyribenzoxim dichloro quinolinic acid pyrazosulfuron of table 8 24% is to direct sowing of rice field weed Preventive effect

Result of the test shows：The dispersible oil suspending agent 30g/ mu medicines of 24% pyribenzoxim dichloro quinolinic acid pyrazosulfuron 30 days average the strain preventive effects and fresh weight preventive effect to Monochoria korsakowii, nakedflower triquetrousc murdannia herb, Eclipta prostrata, Procumbent Falsepimpernel, barnyard grass are all remarkably higher than pair afterwards The dispersible oil suspending agent 60ml/ mus of pyribenzoxim, 25% dichloro quinolinic acid wettable powder 15g/ mus, 25% are risen according to medicament 25g/ Pyrazosulfuron wettable powder 15g/ mus, 25% pyrazosulfuron wettable powder 15g/ mus, illustrate after three medicament mixtures in crop field There is obvious synergistic effect in use, while saved drug cost, expand control of weeds spectrum.

In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means At least one implementation of the present invention is contained in reference to specific features, structure, material or the feature that the embodiment or example describe In example or example.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term. Moreover, specific features, structure, material or the feature of description can close in any one or more embodiments or example Suitable mode combines.

Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed All details are described, it is only described embodiment also not limit the invention.Obviously, according to the content of this specification, It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only Limited by claims and its four corner and equivalent.

Claims

A kind of 1. herbicidal composition of pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron, it is characterised in that containing it is active into Pyribenzoxim, the dichloro quinolinic acid containing active component and the pyrazosulfuron containing active component divided, three's weight ratio are (3~99)：(1~9.9)：(9~99).
2. the herbicidal composition of a kind of pyribenzoxim according to claim 1, dichloro quinolinic acid and pyrazosulfuron, its It is characterised by, the weight ratio of the pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron three is (6~9)：(3~6)：(11~ 22)。
3. the combinations of herbicides of a kind of pyribenzoxim according to claim 1 or 2, dichloro quinolinic acid and pyrazosulfuron Thing, it is characterised in that the cumulant of the active component of the pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron is the combination The 1%~88% of thing gross weight.
4. the herbicidal composition of a kind of pyribenzoxim according to claim 3, dichloro quinolinic acid and pyrazosulfuron, its It is characterised by, the cumulant of the active component of the pyribenzoxim, dichloro quinolinic acid and pyrazosulfuron is total for the composition The 9%~25% of weight.
5. the herbicidal composition of a kind of pyribenzoxim according to claim 1, dichloro quinolinic acid and pyrazosulfuron, its It is characterised by, the combination dosage form includes dispersible oil-suspending agent and water dispersible granules, wettable powder, pulvis and particle Agent.
6. the herbicidal composition of a kind of pyribenzoxim according to claim 1, dichloro quinolinic acid and pyrazosulfuron, its It is characterised by, described herbicidal composition is preventing and kill off direct seading rice field and rice seedling bed, rice transplanting rice terrace and transplanting rice Application in the annual grassy weeds of field.
7. the herbicidal composition of a kind of pyribenzoxim according to claim 6, dichloro quinolinic acid and pyrazosulfuron, its It is characterised by, it is grassy weed, broad leaved weed that described herbicidal composition, which is applied to direct seading rice field annual grassy weeds, And sedge weed.