CN106665599A - Herbicide composition containing fenbuconazol fluridon and isoxaflutole and application of herbicide composition - Google Patents

Abstract

The invention relates to the technical field of pesticides, and particularly relates to a corn field herbicide composition and application of the herbicide composition. The composition comprises the components and the effective active ingredients of fenbuconazol fluridon, isoxaflutole and a safener compound, and the safener compound is one or more of isoxadifen ethyl, p-Isopropylbenzaldehyde toluenesulfonamide, mefenpyr diethyl, and furilazole. The weight percentage contents of fenbuconazol fluridon and isoxaflutole in the herbicide compositions account for 1%-95%, preferentially 10%-80%. The herbicide composition effectively prevents and kills common weeds in the corn field, the effects of preventing and killing the malignant broadleaf weeds are improved, and particularly, the effects of preventing and killing grassy weeds of crab grass, eleusine indica and green bristlegrass and broadleaf weeds of amaranthus retroflexus and horseweed herbs becoming resistant to an ALS inhibition type herbicide are remarkable. The provided herbicide composition not only can expand the herbicide controlling spectrum and reduce the use amount, but also can slow down the generation and development of drug resistance of the weeds, and has important economic values and social significance.

Description

Herbicidal composition and its application containing benzene azoles fluorine humulone and isoxaflutole

Technical field

The invention belongs to pesticide field, and in particular to one group of cornfield weeding comprising benzene azoles fluorine humulone, isoxaflutoles Composition.

Background technology

Chemical weed control is means the most economic during farmland weed is prevented and kill off, effective.But long-term continuous high dose ground uses single The chemical herbicide of one kind or the single mode of action, the problems such as easily cause weeds resistance and resistance evolution.Herbicide chemical combination The reasonable compounding of thing or mixture have expand weeds spectrum, improve preventive effect, delay weeds drug resistance and drug-fast generation with The advantages of development, be one of maximally efficient method for solving the above problems.

Isoxaflutole is done in a kind of organic heterocyclic class selectivity of soil treatment for the Dry crop such as corn, sugarcane field Suction type herbicide before seedling stage, mainly works via weeds young root Assimilation and conductivity.Susceptible weeds are absorbed after this medicine, by suppression Ethyl-para-hydroxyphenyl ketone dioxygenase processed and destroy chlorophyllous formation, cause aggrieved weeds chlorosis wither.Isoxaflutole is being applied When or apply after, though the active ingredient being stranded in topsoil because soil moisture content is bad can not in time give play to anti-removal of impurities The effect of grass, but remain to be kept for the long period be not decomposed, rainfall to be run into or irrigation, remain to play the effect of management of weeds, Susceptible weeds even to growing to 4~5 leaves can also be killed and suppressed.To piemarker, Amaranthus retroflexus, purslane, etc. it is various annual wealthy Some annual gramineous weeds such as leaf weeds, lady's-grass, barnyard grass, eleusine indica, green bristlegrass have preferable preventive effect.To nutgrass flatsedge preventive effect Difference.

Benzene azoles fluorine humulone is typical HPPD inhibitor.P _ Hydroxyphenyl pyruvic acid dual oxide enzyme (HPPD) is after acetylcoenzyme A carboxylases (ACCase) inhibitor, acetolactate synthestase (ALS) inhibitor and proporphyrinogen oxidase (Protox) inhibitor The another class new herbicides found Deng after.The action character of HPPD inhibitor is the activity of weeding with wide spectrum, before bud and Can use after bud, weeds occur dead after albefaction.Using HPPD inhibitor class herbicide, Weed Resistance risk is significantly less than ALS inhibitor, and with conventional ALS inhibitor etc. there is no the cross resistance that target resistance causes in other mechanism of action.

Herbicide-safener (Safener), also referred to as antidote (Antidote) or protective agent (Protectant), are have The chemical substance of special performance.Herbicide-safener is that on the premise of herbicide is not affected to target weeds activity, there is selection Cover crop exempts from herbicide damage on ground, so as to strengthen tolerance of the crop to herbicide, increases peace of the herbicide to crop Quan Xing.The states such as the U.S., Germany, Switzerland, Japan, Canada, Russia, Korea and Hungary to the research of herbicide-safener compared with Many, China starts late, and at the end of the eighties this research is just started.

Herbicide-safener, by compounds category dichloroacetyl amine, oxime ethers, carboxylic acid derivates class, sulfonic acid can be divided into Derivative species, oxazole, thiazole and other heterocyclic compounds, ketone and its derivative etc.；Can be divided into naphthoic acid anhydride, two chloroethenes by structure Amide-type, oxime ethers, heterocyclic, sulfonylureas (amine) class, plant growth regulator class, classes of herbicides and bactericide class etc.；By work Can be divided into action principle with mode：Mating type, breakdown type, antagonism type, offset-type etc..

As the extensive application of herbicide, herbicide damage problem continuously emerge, herbicide-safener is present and compels to be essential Ask.Herbicide-safener include amide-type, carbamates, phenoxy carboxylic acid, aryloxyphenoxypropanoates class, sulfonylurea, Sulfonamides, imidazolone type, cyclohexanedione class, isoxazole diones, sym-trinitrobenzene etc..The crop of protection mainly has jade Rice, paddy rice, Chinese sorghum, corn, corn, rye, cotton, soybean etc..

At present the herbicide of corn field application mainly has the minority kind such as nicosulfuron, mesotrione.Both herbicides Use for many years on corn, weeds start to highlight to the resistance problem of nicosulfuron, mesotrione activity is low, weed control spectrum Narrow, especially setaria weeds effect is poor, needs safe, broad weed-killing spectrum in production badly, can solve the problem that resistant weed problem Kind.

The content of the invention

The present invention seeks to：One group of corn field herbicide composition comprising benzene azoles fluorine humulone is provided, is realized to corn field Lady's-grass, barnyard grass, green green bristlegrass, eleusine indica, Amaranthus retroflexus, pig Xian, Horseweed Herb, purslane, acalypha copperleaf, piemarker, lamb's-quarters, special-shaped Sha The common weeds such as grass, cyperus iria are effectively prevented and kill off, and the lady's-grass of resistance, eleusine indica, green bristlegrass, little is produced to ALS inhibitor Preventing and kill off for the resistant weeds such as bitter fleabane, Amaranthus retroflexus, expands weed control spectrum, reduces applications of pesticide amount, improves miscellaneous to crop safety, solution The problems such as careless resistance to the action of a drug.

To solve the above-mentioned problems in the prior art, the present invention is achieved through the following technical solutions：

A kind of cornfield weeding composition and its application, it is characterised in that：The Herbicidal combinations include weeding effective active into Divide benzene azoles fluorine humulone, isoxaflutoles and safener compound, the safener compound is isoxadifen, p-isopropyl One or more in toluenesulfonamide, cyclopropyl-sulfonylamide, mefenpyrdiethyl, furilazole.

Wherein, benzene azoles fluorine humulone:The weight ratio of isoxaflutole is 1-100:1-100, preferred benzene azoles fluorine humulone:Isoxazole The weight ratio of humulone is 1-50：1-50, more preferably benzene azoles fluorine humulone:The weight ratio of isoxaflutole is 1-20：1-20, is being limited In the range of fixed weight ratio, benzene azoles fluorine humulone, isoxaflutoles mixture obtains the technique effect of Synergistic, safener chemical combination Thing plays improved safety well to crop.

The weight/mass percentage composition of benzene azoles fluorine humulone, isoxaflutoles accounts for the 1-95% of total amount in the Herbicidal combinations, excellent Select 10-80%.Generally, the agricultural chemicals of the active component of Herbicidal combinations of the invention comprising 1-95 weight portions and 5-99 weight portions is normal Rule auxiliary agent.

The conven-tional adjuvants of the Herbicidal combinations can be carrier, surfactant etc..

The carrier represents a kind of organic or inorganic, naturally occurring or synthetic material.They contribute to the administration of active component, The carrier is usually inert and must be agriculturally acceptable, and particularly processed plant is received.Carrier can be Solid, such as potter's clay, naturally occurring or synthetic silicate, silica, resin, wax, solid fertilizer；Or liquid, such as water, Alcohols, ketone, petroleum distillate, aromatic hydrocarbons or wax hydrocarbon, chlorohydrocarbon, liquefied gas etc..

The surfactant may include emulsifying agent, dispersant or wetting agent, and it can be ionic or nonionic. The example that can be mentioned that is salt, oxirane and the aliphatic of polyacrylic salt, lignosulfonates, phenolsulfonic acid or naphthalene sulfonic acids Alcohol or polymer, sulfosuccinic with aliphatic acid or with aliphatic amine and fortified phenol (particularly alkylphenol or aryl phenol) Phosphate, the alkane of the phenol of hydrochlorate, taurine derivatives (particularly taurine alkane fat) and alcohol phosphate or multi-hydroxy ethyl Base sulfonate, alkylaryl sulfonates, alkyl sulfate, lauryl ether sulfate, aliphatic alcohol sulfate, and sulphation ten Six-, 17-and octadecanol and sulphated fatty alcohol glycol ether, in addition with naphthalene or naphthalene sulfonic acids and phenol and formaldehyde Condensation product, NONIN HS 240, ethoxylated isooctyl-phenol, octyl phenol or nonyl phenol, alkyl phenyl polyglycol ether, Tributyl phenyl polyglycol ether, three stearyl phenyl polyglycol ethers, alkyl aryl polyether alcohol, alcohol and fatty alcohol/oxidation second Alkene condensate, ethoxylated castor oil, polyoxyethylene alkyl ether, ethoxylation polyoxypropylene, laruyl alcohol polyglycol ether acetal, Sorbitol ester, lignin sulfite waste liquor, and protein, albuminate, polysaccharide (such as methylcellulose), hydrophobically modified shallow lake Powder, polyvinyl alcohol, polycarboxylate, poly-alkoxyl compound, polyvinylamine, polyvinylpyrrolidone and its copolymer.At least need A kind of surfactant is present, to be conducive to dispersion of the active component in water and be conducive to enabling them to correctly be applied to plant Thing.

The Herbicidal combinations also can contain various other components, such as protecting colloid, adhesive, thickener, thixotropic agent, Bleeding agent, stabilizer, chelating agent, dyestuff, colouring agent and polymer.

The Herbicidal combinations can diluted using front Jing or directly used by user.It is prepared can be added by common Prepared by work method, will add surfactant such as dispersant, surely after active material mixes with liquid flux or solid carrier Determine one or more in agent, wetting agent, adhesive, defoamer etc..

The concrete preparation of the Herbicidal combinations is wettable powder, dispersibles oil-suspending agent, suspending agent, suspension emulsion, breast Oil, water dispersible granules (dry suspending agent), aqueous emulsion, microemulsion.Active compound, safener, solvent, emulsifying agent in above-mentioned formula are added In mother liquor modulation kettle, homogeneous oil phase is obtained, deionized water, antifreeze etc. are well mixed in injection product modulation kettle, Jing is at a high speed Stirring, is well mixed and makes the transparent or semitransparent microemulsion product of the present composition.

In brief, composition of the invention can add with conventional use of solid in the formula of prior art and liquid Agent mixes.

Herbicidal combinations of the present invention can be applied on pending plant leaf blade by the method sprayed, that is, be applied to Weeds, on the weed infestation being particularly harmful on plant growth or the easily surface of invasion impact.Discovery is probed into Jing tests, the present invention There is notable synergistic effect between the effective active composition benzene azoles fluorine humulone, isoxaflutoles of the Herbicidal combinations.Synergy is imitated Fruit show as amount of application reduction, broader weeds distribution spectrum, herbicide effect faster, it is more longlasting.

The beneficial effect that the present invention is realized：

(1) Herbicidal combinations of the present invention are environmental friendly corn field herbicidal, degraded are easy in the environment, to working as stubble Corn and succession crop are safe.

(2) Herbicidal combinations of the present invention have low cost, it is easy to use, easy to spread the characteristics of, have huge Economic benefit and social benefit.

(3) compared with prior art, Herbicidal combinations of the present invention can prevent and kill off the common grassy weed of corn field, wealthy Leaf weeds, nutgrass flatsedge, can prevent and kill off the grassy weed such as barnyard grass, eleusine indica, green bristlegrass that resistance is produced to ALS inhibitor and anti-again The broad leaved weeds such as branch amaranth, Horseweed Herb, are the effective schemes of corn field weed resistance management.

Specific embodiment

With reference to specific embodiment, present invention is further elaborated, but the scope of the present invention can not be limited, The general change that persons skilled in the art are done to patent of the present invention, all falls equivalence in Patent right requirement of the present invention Book limited range.

A, embodiment

1.1) 25% benzene azoles fluorine humulone isoxaflutole dispersibles oil-suspending agent

Formula is consisted of：The phenethyl phenol of 10%+3% isoxadifen of benzene azoles fluorine+15% isoxaflutole of humulone+4.5% gathers The thickener of+15% castor oil polyoxyethylene ether of oxygen ethene ether phosphate+4% polyoxyethylene carboxylate of triethanolamine salt+3% has Machine bentonite+methyl oleate is supplied.

Process equipment：Mixing kettle, colloid mill, sand mill, cutter etc..

Process：All materials are put into mixing kettle, colloid mill is crossed after stirring mixing, afterwards into sand mill three-level Sand milling, finally shears in cutter and is uniformly finished product.

1.2) 50% benzene azoles fluorine humulone isoxaflutole suspending agent

Formula is consisted of：The sodium lignin sulfonate of 30%+10% cyclopropyl-sulfonylamide of benzene azoles fluorine+20% isoxaflutole of humulone+5%+ + 5.5% glycerine of xanthans of 5% pull open powder+1.5%+excess water is supplied.

Process equipment：Mixing kettle, cutter, colloid mill, sand mill etc..

Process：Benzene azoles fluorine humulone, isoxaflutoles, cyclopropyl-sulfonylamide and auxiliary agent etc. are put into mixing kettle, stirring Colloid mill is crossed after mixing, afterwards into sand mill three-level sanding, finished product is obtained.

1.3) 65% benzene azoles fluorine humulone isoxaflutole water dispersible granules

Formula is consisted of：The naphthalenesulfonate+3% of 40%+10% mefenpyrdiethyl of benzene azoles fluorine+25% isoxaflutole of humulone+5% The disintegrant of pull open powder+1% polyvinyl alcohol+filler diatomite is supplied.

Process equipment：Airslide disintegrating mill, coulter type mixer, basket comminutor, drying box, screening machine etc..

Process：Above-mentioned material was well mixed into air-flow crushing, is added and is mediated, be dried after granulation, final sizing was obtained To finished product.

B, the test of pesticide effectiveness

1) experimental condition

1.1), for examination target

Barnyard grass (Echinochloa crusgalli), green green bristlegrass (Setaria viridis), lamb's-quarters (Chenopodium Album), field bindweed (Convolvulus arvensis), difformed galingale herb (Cyperus difformis) pick up from Tai'an agricultural Research institute experimental plot.

Above-mentioned weeds adopt pot-culture method culture, built-in from agriculture in being placed in enamel tray with 180 х 140mm plastic nutrition bowls Field is adopted to back through and air-dries the topsoil (at 4/5) for sieving, and the soil moisture initial stage is controlled 20%, selects full seed homogeneous Weed seed, is soaked 6 hours, the vernalization in 28 DEG C of biochemical cultivation cases (dark), by the ruderal species for just having showed money or valuables one carries unintentionally with 25 DEG C of warm water Son is uniformly placed in soil surface, then earthing 0.7cm.Culture in controllable heliogreenhouse is placed in after chemicals treatment, is periodically being warded off A certain amount of water is added in porcelain dish, ground moistening is kept.

1.2), condition of culture

Carry out in controllable heliogreenhouse, 18~30 DEG C of temperature, natural lighting, relative humidity 57%~72%.

Soil types is loam, and the content of organic matter is 1.63%, pH=7.1, alkali-hydrolyzable nitrogen 84.3mg/kg, rapid available phosphorus 38.5mg/kg, available potassium 82.1mg/kg.

1.3), instrument and equipment

3WP-2000 type walking spray towers, Nanjing Agricultural Machinery Inst., Ministry of Agriculture.GA110 type a ten thousandth electronic balances (Germany)；ZDR2000 intelligent data recorders (Hangzhou Ze great Instrument Ltd.)；SPX type Intelligent biochemistry incubator (Ning Bojiang Southern instrument plant).

2) experimental design

2.1), reagent

2.1.1), test medicine

Required active component is commercially available active compound.

Active compound makees solvent using dimethylformamide, is diluted with the emulsifying agent T-80 aqueous solution of content 0.1%, now uses existing dilute Release.

2.2), test process

2.2.1), dosage is arranged

It is determined that when benzene azoles fluorine humulone, isoxaflutole each group distribution ratio or content, should from the action character of two kinds of medicaments and its Virulence etc. is weighed, it is also contemplated that the main application target of the formula.This research is on the basis of early stage prerun, if benzene azoles fluorine is careless Ketone, isoxaflutoles are alone and mixing consumption is shown in Table respectively lattice, and 15 groups are designed altogether.With without medicament, containing same solvent and emulsification The water of agent is used as blank.

2.2.2), test repeats

Often process and be repeated 4 times, 3 basins are often processed every time, weed seed 20 is sowed per basin, often process totally 60 plants.

2.3), processing mode

2.3.1), process time and number of times

The shared medicine of test 1 time.Treat the heart stage of 2 leaf of weeds 1, thinning, keep 15 plants of weeds in per basin, often process and retain 45 plants, then Continue to cultivate to barnyard grass, the heart stage of 3 leaf of green green bristlegrass 1 and processed.

2.3.2), using apparatus and administrated method

Cultured examination material is uniformly placed on the platform of area 0.5m2, is sprayed with 3WP-2000 type walking spray towers cauline leaf Mist, spouting liquid is based on 30 liters/mu.Atomisation pressure 0.3MPa.After whole liquid medicine jets are complete, air valve is closed, after 30 seconds, open spraying Pyller, takes out nutritive cube.Then air valve is opened, clear water 50ml is sprayed, sparge pipe is cleaned.

3) test method

Using pot-culture method.Weeds culture is shown in 1.1, reference《Farm-chemical indoor determination test rule herbicide》Carry out.Use prescription Method is shown in 2.3.2, using cauline leaf process method.

4), data survey and statistical analysis

4.1), investigation method

Using absolute number investigation method, with blade along the whole strain seedling of soil surface cut-out survival weeds, with assay balance weeds are weighed Fresh weight.It is based on zero by fresh weight for dead weeds.

4.2), control time and number of times

Investigate within 20 days after process, investigate 1 time altogether.

4.3), data statistic analysis

Each theoretical fresh weight inhibition (E0=X+Y-X*Y/100) for processing hybrid combining is calculated with Gowing methods, then with actual measurement Inhibiting rate (E) compares, and evaluates the two mixed synergy type to weeds, when E-E0 values be synergistic effect more than 10%, It is antagonism less than -10%, is addition between -10%~10%.And according to actual preventive effect and herbicide feature, match somebody with somebody The factors such as the balance of side determine optimum proportioning.

Fresh weight inhibition when X is P for A consumptions in formula；Fresh weight inhibition when Y is Q for active component B consumptions.

Statistics see the table below.

The mixed actual preventive effect and synergy effect (Gowing methods) to weeds of table 1

The mixed actual preventive effect and synergy effect (Gowing methods) to weeds of table 2

By table 1, table 2 as can be seen that benzene azoles fluorine humulone is He after isoxaflutole compounding, can significantly improve to barnyard grass, green dog The preventive effect of tail grass, with notable synergistic effect.Meanwhile, broad-leaved of the Herbicidal combinations to the alone preventive effect difference of benzene azoles fluorine humulone Class weeds lamb's-quarters, field bindweed etc., synergistic effect is especially notable, solves the problems, such as that clomazone is poor to nutgrass flatsedge preventive effect, and then expands Weed control spectrum.

C, land for growing field crops field preventive effect

1) to the preventive effect of corn field main weeds

In weeds 3-5 leaf phases, cauline leaf spray pesticide, to liter/mu of the water yield 30.30d after medicine, to the fresh weight of various weeds effect is prevented and kill off Really.

The field demonstration preventive effect of table 3

As can be seen from the above table, the present composition is good to corn field weed broad weed-killing spectrum, preventive effect, and consumption is few, Ke Yiyou Effect solves the problems, such as that benzene azoles fluorine humulone, isoxaflutoles exclusive use weed control spectrum is narrow, preventive effect is low, dosage is high.Meanwhile, than Existing 4% nicosulfuron dispersibles oil-suspending agent, 10% mesotrione oil dispersion and processes preventive effect height, weed control spectrum Extensively.

Because isoxaflutole distinctive " recharging " effect, i.e. isoxaflutole are when applying or after administration, because of soil Though soil moisture content is bad and being stranded in the active ingredient in topsoil can not in time give play to the effect of management of weeds, remain to protect Holding the long period is not decomposed, rainfall to be run into or irrigation, remains to play the effect of management of weeds, extends the medicament lasting period, Close down action effect significantly, a dispenser can effectively Control Weeds in Maize Field harm.

2) corn safety is tested

During 31 heart of leaf of corn, the weeds 3-5 leaf phases, hand sprayer, liter/mu of the amount of being watered 30, using cauline leaf spray even spraying, often Process is repeated 4 times, and safety conditions are shown in Table 4..

The safety conditions of table 4

Poisoning is classified：1 grade：Plant growth is normal, without any damage symptoms；

2 grades：The slight poisoning of crop, poisoning is less than 10%；

3 grades：The medium poisoning of crop, can recover later, not affect yield；

4 grades：Chemical injury of crops is heavier, it is difficult to recover, and causes the underproduction；

5 grades：Chemical injury of crops is serious, it is impossible to recover, and causes Severe Reduction or total crop failure.

It is as can be seen from the above table, good to corn safety when present composition dosage is 2 times of amounts of common dose, Consumption is few, and the problem to corn safety difference can be used alone with effectively solving isoxaflutole.

D, the preventive effect test of antagonism weeds

Test is from green green bristlegrass (Setaria viridis), the lady's-grass that resistance is produced to ALS inhibitor nicosulfuron (Digitaria sanguinalis), eleusine indica (Eleusine indica), Amaranthus retroflexus (Amaranthus Retroflexus), Horseweed Herb (Conyza canadensis) seed, used as subjects, above-mentioned seed was gathered in 2015 In Shandong Province Tai'an proving ground.

Test method：

Weed seed is unified into vernalization, by pretreatment for examination weed seed uniform broadcasting in soil surface.Dispenser is advanced in the ranks Seedling, per basin final singling to 30 plants, each processes 4 basins examination material.Weeds are carried out with cauline leaf spraying treatment, investigation weeds aerial part is fresh Weight, calculates weeds fresh weight preventive effect (fresh weight preventive effect is the mean value of 4 repetitions in table), the statistical test situation after testing 30 days.

The resistant weed preventing iron test result of table 5

As can be seen from Table 5, Herbicidal combinations of the present invention can effectively prevent and kill off corn field resistant weed lady's-grass, eleusine indica, green Color green bristlegrass, Amaranthus retroflexus, Horseweed Herb etc..

Can draw through lot of experiments and exploration：Benzene azoles fluorine humulone, isoxaflutoles, safener compound are used with, are used In corn field after seedling management of weeds, there is synergistic effect between effective active composition, it is miscellaneous to grass family such as barnyard grass, green green bristlegrass It is notable that the broad leaved weedses such as grass and lamb's-quarters, piemarker, field bindweed prevent and kill off synergy.

The cornfield weeding composition that the present invention is provided, reduces the alone dosage of benzene azoles fluorine humulone, isoxaflutoles, carries It is high that weed control spectrum is expanded to corn safety, and application cost is reduced, especially the miscellaneous of resistance is produced to ALS inhibitor Mare Tang, eleusine indica, green green bristlegrass, Amaranthus retroflexus, Horseweed Herb etc. are efficient, with good application prospect.

Claims (8)

1. herbicidal composition and its application containing benzene azoles fluorine humulone He isoxaflutole, it is characterised in that：The weeding group Compound active ingredient includes benzene azoles fluorine humulone, isoxaflutoles.

2. Herbicidal combinations according to claim 1, it is characterised in that：Effective active composition benzene azoles fluorine humulone：Isoxazole The mass ratio of humulone is 1-100：1-100.

3. Herbicidal combinations according to claim 1, it is characterised in that：Effective active composition benzene azoles fluorine humulone：Isoxazole The mass ratio of humulone is 1-50：1-50.

4. Herbicidal combinations according to claim 1, it is characterised in that：Effective active composition benzene azoles fluorine humulone：Isoxazole The mass ratio of humulone is 1-20：1-20.

5. Herbicidal combinations according to claim 1, it is characterised in that：Also contain safener, the safener is selected from and is One or more in isoxadifen, cymolsulfamide, cyclopropyl-sulfonylamide, mefenpyrdiethyl, furilazole.

6. Herbicidal combinations according to claim 1, it is characterised in that：Benzene azoles fluorine grass in the Synergistic herbicide compositions The weight/mass percentage composition of ketone, isoxaflutoles accounts for the 1-95% of total amount, preferred 10-80%.

7. Herbicidal combinations according to claim 1, it is characterised in that：The concrete preparation of the Herbicidal combinations is breast Oil, suspending agent, microemulsion, suspension emulsion, aqueous emulsion, dispersible oil-suspending agent, wettable powder or water dispersible granules.

8. Synergistic herbicide compositions as described in claim 1-7 any one, it is characterised in that：The composition is preventing and kill off corn It is field lady's-grass, barnyard grass, green bristlegrass, eleusine indica, Amaranthus retroflexus, purslane, acalypha copperleaf, pig Xian, piemarker, lamb's-quarters, field bindweed, ivy glorybind, little The weeds effect is significant such as bitter fleabane, cyperus iria, difformed galingale herb, to ALS inhibitor produce resistance weeds for example lady's-grass, eleusine indica, Green green bristlegrass, Amaranthus retroflexus, Horseweed Herb etc. have notable preventive effect, to corn safety.