CN105284848A

CN105284848A - Weeding composition

Info

Publication number: CN105284848A
Application number: CN201410356263.6A
Authority: CN
Inventors: 罗昌炎; 詹姆斯·T·布里斯托
Original assignee: Jiangsu Rotam Chemical Co Ltd
Current assignee: Jiangsu Rotam Chemical Co Ltd
Priority date: 2014-07-24
Filing date: 2014-07-24
Publication date: 2016-02-03
Anticipated expiration: 2034-07-24
Also published as: CN105284848B

Abstract

The invention relates to a weeding composition and a method for preventing and removing weeds by using the weeding composition. The weeding composition provided by the invention comprises active components (I) and (II), wherein the active component (I) is a compound described in the formula (I) (shown in the description), the active component (II) is a compound described in the formula (II) (shown in the description), and the weight ratio of the active component (I) to the active component (II) is (100:1)-(1:100).

Description

A kind of Herbicidal combinations

Technical field

The present invention relates to a kind of Herbicidal combinations and prevent and kill off the method for undesirable plant.

Background technology

When being used alone weed killer herbicide, their effect is mostly just temporary transient, namely can observe the resistance of weeds after some time.In crop protection, wish in principle to increase the activity of reactive compound and the reliability of effect.Wish that reactive compound prevents and kill off undesirable plant effectively especially, but simultaneously compatible be concerned about useful plant.Therefore wish that reactive compound can use by alap rate of application, highland realizes the compatibility with useful plant as far as possible.

Promazine Sulfometuron Methyl (Propyrisulfuron), molecular formula is C ₁₆h ₁₈o ₅n ₇sCl, its molecular structure is as follows:

(formula I)

Promazine Sulfometuron Methyl is by the pyrimidine radicals sulfonylurea herbicide of SUMITOMO CHEMICAL chemistry exploitation, is mainly used in paddy field and prevents and kill off the grass family such as barnyard grass and broad-leaved section weeds.This product consumption is low, and the weeds some known sulfonylurea herbicide being produced to resistance have good preventive effect.

Metamifop (Metamifop), chemical name is (R)-2-[4-[(the chloro-2-benzoxazolyl of 6-) oxygen base] phenoxy group]-N-(2-fluorophenyl)-N-methyl propanamide, its structural formula is:

(formula (II)

Metamifop is the aromatic oxygen-phenoxy group propionates class weed killer herbicide developed by Chemical Engineering Technology research institute of Korea S, can be fabulous prevent and kill off most of annual and perennial grassy weed, with great majority this type of weed killer herbicide unlike metamifop to rice safety, can effectively prevent and kill off paddy field main weeds, as barnyard grass, moleplant seed, lady's-grass and eleusine indica, be mainly used in transplanting and direct sowing rice field weeding.Metamifop by suppressing the fatty acid of weeds synthesize to the suppression of acetyl-CoA carboxylase, thus suppresses weed growth, after medication in several days sensitive varieties to occur that blade moves back green, Developing restraint, drying up appears in some kind after administration for 2 weeks, even death.

Metamifop effectively can prevent and kill off grassy weed, but to broad-leaved section weeds, the anti-heterodyne of sedge weed.Sulfonylurea herbicide is selectivity inner-adsorption conduction-type herbicide, can be absorbed by weeds root and blade, conduct rapidly in plant body, T suppression cell division and growth, after susceptible weeds absorbs medicament, young shoot and root stop growing rapidly, tender tissue turns to be yellow, withered subsequently, effectively can prevent and kill off broad leaved weed, and have good preventive effect to the weeds of some known sulfonylurea herbicide generation resistance.

So, in order to make up the deficiency of single dose, need carry out composite to single dose weed killer herbicide, in order to tackle increasingly serious Weed infestation.

Summary of the invention

The object of this invention is to provide a kind of Herbicidal combinations and prevent and kill off the method for undesirable plant.The object of this invention is to provide a kind of Herbicidal combinations, comprise active component (I) and (II), its Chinese style (I) is the compound described by formula (I), promazine Sulfometuron Methyl (Propyrisulfuron),

(I)

(II) compound for being described by formula (II), metamifop (Metamifop),

(II)

The wherein weight ratio (II) of active component (I) and (II): (II) is 100: 1 to 1:100.

Preferably, the weight ratio (I) of wherein active component (I) and (II): (II) is 50: 1 to 1: 50.

Preferably, the weight ratio (I) of wherein active component (I) and (II): (II) is 25: 1 to 1: 25.

Preferred, the wherein weight ratio (I) of active component (I) and (II): (II) is 10: 1 to 1: 10.

Preferred, the wherein weight ratio (I) of active component (I) and (II): (II) is 5: 1 to 1: 5.

A kind of Herbicidal combinations, comprises active component (I) and (II), filler and/or surfactant.

Described Herbicidal combinations also comprises safener, and safener is selected from benoxacor, fenclorim, dichlormide, mefenpyrdiethyl, wherein said safener relative to promazine Sulfometuron Methyl with the weight proportion of the active component of metamifop is 1:100 to 20:1.

Described Herbicidal combinations, comprises promazine Sulfometuron Methyl with metamifop, filler and/or surfactant.

In described Herbicidal combinations, the content of active component (I) and (II) accounts for the 5%-90% of described Herbicidal combinations.

In described Herbicidal combinations, the content of active component (I) and (II) accounts for described Herbicidal combinations 10%-80%.

In described Herbicidal combinations, the content of active component (I) and (II) accounts for described Herbicidal combinations 20%-60%.

The formulation of described Herbicidal combinations is wetting powder, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, water dispersible granules, microcapsule suspension-suspendinagent agent, ultra low volume liquids.

Described Herbicidal combinations is preventing and kill off the application on undesirable plant.

Described Herbicidal combinations is preventing and kill off the application in unifacial leaf, broadleaf weed.

The application of described Herbicidal combinations grass family, broad-leaved section, sedge weed preventing and kill off in wheat, corn, soybean, sugar beet, sugarcane, cotton, paddy rice, beans, flax, barley, oat, rye, triticale, rape, potato, broomcorn millet, herbage, greenery patches or lawn, in Zhong Huofei crop area, fruit plantation.Particularly in the application of preventing and kill off unifacial leaf in rice crop, broadleaf weed.

A kind of method of preventing and kill off undesirable plant, it is characterized in that, the active component (I) of Herbicidal combinations of the present invention and (II) are applied to undesirable plant, plant propagation material jointly or individually, or the region of undesirable plant growth.

Herbicidal combinations of the present invention makes the activity of active component (I) and (II) strengthen so that unexpected mode is collaborative, beyond use single active component (I) and (II) accessible activity.Synergy can make that the rate of application of single weed killer herbicide reduces, effectiveness under identical rate of application is higher, prevent and kill off also not by prevent and kill off kind, prevent and kill off to single herbicide or multiple herbicide tolerant or have resistance kind, the phase of using extends and/or required independent application times reduces, and to obtain in economy and ecology weeding system advantageously for user.

Embodiment

The invention provides a kind of Herbicidal combinations, comprise active component (I) and (II), its Chinese style (I) is the compound described by formula (I),

(I)

(II) compound for being described by formula (II),

(II)

The wherein weight ratio (I) of active component (I) and (II): (II) is 100: 1 to 1:100, preferably 50: 1 to 1:50, more preferably 25: 1 to 1:25, more preferably 10: 1 to 1:10, more preferably 5: 1 to 1:5.

Synergy can make that the rate of application of single weed killer herbicide reduces, effectiveness under identical rate of application is higher, prevent and kill off also not by prevent and kill off kind, prevent and kill off to single herbicide or multiple herbicide tolerant or have resistance kind, the phase of using extends and/or required independent application times reduces, and to obtain in economy and ecology weeding system advantageously for user.

Herbicidal combinations of the present invention makes the activity of active component (I) and (II) strengthen so that unexpected mode is collaborative, beyond use single active component (I) and (II) accessible activity.

The rate of application of active component (I) can change in wide region, such as, at 0.1g to 1000gA.I./ha (hereinafter, A.I./ha represents " active substance/hectare "=based on the reactive compound meter of 100% purity).When using with the rate of application of 0.1 to 1000gA.I./ha, when prior to seeding, before plantation or before bud and when using active component (I) after bud in method, it has relatively wide noxious plant spectrum to be prevented and kill off, such as annual and perennial unifacial leaf or dicotyledonous broad leaved weed, grassy weed and sedge, and undesirable crop plants.

The rate of application of active component (II) can change in wide region, such as 1g to 5000gA.I./ha (hereinafter, A.I./ha represents " active substance/hectare "=based on the reactive compound meter of 100% purity), it has relatively wide noxious plant spectrum to be prevented and kill off.

The proportion that active component (I) is suitable with (II) is such as determined by the rate of application with reference to mentioned individualized compound.In the present compositions, usually rate of application can be reduced.In the present compositions, the preferred proportioning (I) of active component (I) and (II): (II) is following weight ratio:

The weight ratio (I) of active component (I) and (II): (II) is usually 100: 1 to 1:100;

Preferably, the weight ratio (I) of active component (I) and (II): (II) is 50: 1 to 1:50;

Especially, the weight ratio (I) of active component (I) and (II): (II) is 25: 1 to 1:25;

More special, the weight ratio (I) of active component (I) and (II): (II) is 10: 1 to 1:10;

More special, the weight ratio (I) of active component (I) and (II): (II) is 5: 1 to 1:5.

Herbicidal combinations of the present invention also can comprise that one or more are different with (II) from active component (I) and be also used as other reactive compounds of selective herbicide.

Herbicidal combinations of the present invention also can comprise the various reactive compounds of other components, such as, be selected from weed killer herbicide and plant growth regulator that safener, fungicide, insecticide, miticide, nematocide, bird repellent, soil structure conditioner, nutrient for plants (fertilizer) and structure are different from active component (I) and (II).

Preferably, described dissimilar agrochemically active compound comprises Acetochlor (acetochlor), Acibenzolar (acibenzolar), diazosulfide (acibenzolar-S-methyl), acifluorfen (acifluorfen), aclonifen (aclonifen), alachlor (alachlor), allidochlor (allidochlor), alloxydimsodium (alloxydim), ametryn (ametryn), amicarbazone (amicarbazone), amidosulfuron (amidosulfuron), chlorine Fampridine acid (aminopyralid), Amrol (amitrole), Amcide Ammate (ammoniumsulfamate), ancymidol (ancymidol), anilofos (anilofos), sulphur grass spirit (asulam), atrazine (atrazine), azafenidin (azafenidin), azimsulfuron (azimsulfuron), benfuresate (benfuresate), bensulfuron-methyl (bensulfuron), bentazone (bentazone), benzfendizone (benzfendizone), benzobicylon (benzobicyclon), benzofenap (benzofenap), fluorine sulfanilamide (SN) grass (benzofluor), fluorine benzofenap (bicyclopyrone), two careless ether (bispyribac-sodium), Brominal (bromoxynil), butachlor (butachlor), butafenacil (butafenacil), butralin (butralin), cafenstrole (cafenstrole), carbetamide (carbetamide), carfentrazone (carfentrazone), chlorimuronethyl (chlorimuron, chlorimuron-ethyl), chlormequat (chlormequatchloride), chlortoluron (chlorotoluron), chlorine sulphur grand (chlorsulfuron), cinmethylin (cinmethylin), cinosulfuron (cinosulfuron), clethodim (clethodim), clomazone (clomazone), clomeprop (clomeprop), clopyralid (clopyralid), cyanazine (cyanazine), cyclanilide (cyclanilide), AC322140 (cyclosulfamuron), cycloxydim (cycloxydim), ring cafenstrole (cyprazole), daimuron (daimuron/dymron), dicamba (dicamba), diclofop-methyl (diclofop-methyl), essence diclofop-methyl (diclofop-P-methyl), diclosulam (diclosulam), acetyl alachlor (diethatyl, diethatyl-ethyl), diflufenican (diflufenican), diflufenzopyr (diflufenzopyr, diflufenzopyr-sodium), oxazole grand (dimefuron), dimepiperate (dimepiperate), dimethachlor (dimethachlor), dimethametryn (dimethametryn), diphenamide (diphenamid), dipropetryn (dipropetryn), diquat (diquat), diuron (diuron), ethametsulfuron (ethametsulfuron, ethametsulfuron-methyl), ethrel (ethephon), ethidimuron (ethidimuron), ethoxysulfuron (ethoxysulfuron), ethobenzanid (etobenzanid), oxazole diclofop-methyl (fenoxaprop), fenoxaprop (fenoxaprop-P), oxazole diclofop-methyl (fenoxaprop-ethyl), fentrazamide (fentrazamide), flazasulfuron (flazasulfuron), florasulam (florasulam), fluazifop (fluazifop), efficient fluazifop (fluazifop-P), fluazifop-P-butyl (fluazifop-butyl), efficient fluazifop butyl ester (fluazifop-P-butyl), fluazolate (fluazolate), flucarbazonesodium (flucarbazone, flucarbazone-sodium), flucetosulfuron (flucetosulfuron), flufenacet (flufenacet), flumetralim (flumetralin), Flumetsulam (flumetsulam), flumioxazin (flumioxazin), alkynes grass amine (flumipropyn), fluometuron (fluometuron), fluorodifen (fluorodifen), fluoroglycofen-ethyl (fluoroglycofen, fluoroglycofen-ethyl), flupoxam (flupoxam), flupyrsulfuron-methyl-sodium (flupyrsulfuron), fluridone (fluridone), fluorochloridone (flurochloridone), fluroxypyr (fluroxypyr), flurtamone (flurtamone), thiazole oxamide (fluthiamide), fomesafen (fomesafen), Glufosinate (glufosinate, glufosinate-ammonium), Glufosinate-P (glufosinate-P, glufosinate-P-ammonium), Glufosinate-P-sodium salt (glufosinate-P-sodium), glyphosate (glyphosate), glyphosate-isopropylammonium (glyphosate-isopropylammonium), fluorine nitre sulfonamide (halosafen), halosulfuronmethyl (halosulfuron, halosulfuron-methyl), fluazifop-butyl (haloxyfop), essence fluazifop-butyl (haloxyfop-P), fluorine pyrrole second standing grain spirit (haloxyfop-ethoxyethyl), essence fluorine pyrrole second standing grain spirit (haloxyfop-P-ethoxyethyl), haloxyfop-P-methyl (haloxyfop-methyl), haloxyfop-methyl (haloxyfop-P-methyl), hexazinone (hexazinone), miaow oxalic acid (imazamethabenz, imazamethabenz-methyl), imazamox (imazamox, imazamox-ammonium), AC 263222 (imazapic), imazapyr (imazapyr, imazapyr-isopropylammonium), imazaquin (imazaquin, imazaquin-ammonium), imazethapyr (imazethapyr, imazethapyr-ammonium), imazosulfuron (imazosulfuron), inabenfide (inabenfide), indanofan (indanofan), iodine metsulfuron-methyl (iodosulfuron, iodosulfuron-methyl-sodium), ioxynil (ioxynil), isoproturon (isoproturon), Yi Evil acyl grass amine (isoxaben), Yi Evil chlorine humulone (isoxachlortole), isoxazole humulone (isoxaflutole), Yi Evil grass ether (isoxapyrifop), lactofen (lactofen), lenacil (lenacil), 2 methyl 4 chlorophenoxyacetic acid (MCPA), 2-first-4-chlorophenoxy butyric acid (MCPB), 2-first-4-chlorophenoxy methyl butyrate (MCPB-methyl), 2-first-4-chlorophenoxy ethyl butyrate (MCPB-ethyl), 2-first-4-chlorophenoxy sodium butyrate (MCPB-sodium), mefenacet (mefenacet), chlorine sulphonyl grass amine (mefluidide), methyl piperidine (mepiquat-chloride), mesosulfuronmethyl (mesosulfuron, mesosulfuron-methyl), mesotrione (mesotrione), methabenzthiazuron (methabenzthiazuron), metamitron (metamitron), metazachlor (metazachlor), methazole (methazole), Sulfonylurea (methiopyrsulfuron), methoxyphenone (methoxyphenone), methyldymron (methyldymron), isopropyl methoxalamine (metolachlor), S-metolachlor (S-metolachlor), metosulam (metosulam), metoxuron (metoxuron), piperazine humulone (metribuzin), metsulfuron-methyl (metsulfuron, metsulfuron-methyl), molinate (molinate), monosulfmeturon (monosulfuron), monosulfmeturon ester (monosulfuronester), monuron (monuron), napropamide (napropamide), nicosulfuron (nicosulfuron), Bing Que Evil humulone (oxadiargyl), Evil humulone (oxadiazon), oxasulfuron (oxasulfuron), oxaziclomefone (oxaziclomefone), Oxyfluorfen (oxyfluorfen), paclobutrazol (paclobutrazol), paraquat (paraquat, paraquatdichloride), pendimethalin (pendimethalin), Huan Wu Evil humulone (pentoxazone), pethoxamid (pethoxamid), picloram (picloram), fluorine pyrrole acyl grass amine (picolinafen), azoles quinoline grass ester (pinoxaden), piperophos (piperophos), metamifop (pretilachlor), probenazole (probenazole), profluazol (profluazol), profluralin (prifluraline), clefoxidim (profoxydim), prometryn (prometryn), Stam F-34 (propanil), propazine (propazine), propham (propham), isoxazole acyl grass amine (propisochlor), the phonetic sulphur of piperazine imidazoles (propyrisulfuron), propyzamide (propyzamide), prosulfocarb (prosulfocarb), prosulfuron (prosulfuron), prynachlor (prynachlor), pyraclonil (pyraclonil), pyrrole grass ether (pyraflufen, pyraflufen-ethyl), pyrazosulfuron (pyrazosulfuron, pyrazosulfuron-ethyl)), iso-propyl-ester nitrofen (pyribambenz-isopropyl), propyl-ester nitorfen (pyribambenz-propyl), pyribenzoxim (pyribenzoxim), pyributicarb (pyributicarb), pyriftalid (pyriftalid), KIH 6127 (pyriminobac, pyriminobac-methyl), Nylar (pyrimisulfan), pyrithiobacsodium (pyrithiobac, pyrithiobac-sodium), pyroxasulfone, pyroxsulam (pyroxsulam), dichloro quinolinic acid (quinchlorac), quinmerac (quinmerac), quizalofop-ethyl (quizalofop), Quizalotop-ethyl (quizalofop-P), Quizalotop-ethyl ethyl ester (quizalofop-P-ethyl), rimsulfuron (rimsulfuron), benzene flumetsulam (saflufenacil), Zhong Dingtong (secbumeton), sethoxydim (sethoxydim), Tupersan (siduron), sulphur humulone (sulcotrione), sulfentrazone (sulfentrazone), sulfometuronmethyl (sulfometuron, sulfometuron-methyl), Thidiazuron (thidiazuron), thifensulfuronmethyl (thifensulfuron, thifensulfuron-methyl), benthiocarb (thiobencarb), tiocarbazil (tiocarbazil), triasulfuron (triasulfuron), triaziflam (triaziflam), tribenuron-methyl (tribenuron, tribenuron-methyl), trichloroacetic acid (TCA), trichlopyr (triclopyr), tridiphane (tridiphane), trifloxysulfuron (trifloxysulfuron, trifloxysulfuron-sodium), trefanocide (trifluralin), triflusulfuronmethyl (triflusulfuron), triflusulfuronmethyl methyl esters (triflusulfuron-methyl), trimeturon (trimeturon), TrinexAN_SNacethyl (trinexapac, trinexapac-ethyl), tritosulfuron (tritosulfuron), tsitodef, uniconazole P (uniconazole).

Although described weed killer herbicide (I) and (II) demonstrate good and even enough selectivity in a large amount of crop, in principle, in some crops, particularly also when the weed killer herbicide less with other selectivity mixes, the phytotoxicity to crop plants may be there is.So it is particularly advantageous for comprising according to the composition of Herbicidal combinations of the present invention and one or more safeners.Described safener uses with effective dose of detoxifying, such as important economically crop or the plant toxicity side effect at fruit plantation (plantation crops) middle minimizing weed killer herbicide used.Described crop important is economically cereal (wheat, barley, rye, oat, corn, paddy rice, broomcorn millet), sugar beet, sugarcane, rape, cotton, soybean such as, and preferred cereal, is in particular paddy rice.

Below the compound group (comprising possible stereoisomer and agriculturally conventional ester or salt) making safener is such as suitable for: benoxacor (benoxacor), cloquitocet_mexyl (cloquintocet (-mexyl)), cyometrinil (cyometrinil), cyprosulfamide, dichlormide (dichlormid), dicyclonon, o-phenyl phosphoric acid o, o-diethyl ester (dietholate), fenchlorazole (fenchlorazole (-ethyl)), fenclorim (fenclorim), separate careless amine (flurazole), fluxofenim (fluxofenim), Xie Cao oxazole (furilazole), Shuan Ben oxazole acid (isoxadifen (-ethyl)), mefenpyrdiethyl (mefenpyr (-diethyl)), methyl carbamic acid 4-chlorphenyl ester (mephenate), naphthalic anhydride, oxabetrinil (oxabetrinil).

More known safener is used as weed killer herbicide, and correspondingly, except having except herbicide effect to noxious plant, also plays the effect of cover crop plant.

The weight ratio of Herbicidal combinations and safener depends on the rate of application of weed killer herbicide and the effect of described safener usually, and can change in wide region, such as 90000: 1 to 1: 5000, preferably 7000: 1 to 1: 1600, especially 3000: 1 to 1: 500, be more in particular in the scope of 1:100 to 20:1.Safener can be prepared with finished product preparation with active component (I) and (II) or supply with the form of mixing thing with the bucket of described Herbicidal combinations and use.

Herbicidal combinations of the present invention is to the unifacial leaf important economically of wide range and dicotyledonous harmful plants such as broad leaved weed, grassy weed or sedge, the kind comprised weeding active compound has a resistance has excellent activity of weeding, and described weeding active compound is such as glyphosate, Glufosinate, atrazine, imidazolinone herbicide, sulfonylurea.

The monocotyledon weed prevented and kill off by Herbicidal combinations of the present invention that can mention and some representational instantiation of dicotyledonous weed flora group, but be not limited to some kind.

The example of the weed species of described herbicidal composition useful effect is, the Avena (Avenaspp.) of such as monocotyledon weed kind, amur foxtail belongs to (Alopecurusspp.), false Agrostis (Aperaspp.), Brachiaria (Brachiariaspp.), Brome (Bromusspp.), knotgrass (Digitariaspp.), Lolium (Loliumspp.), Echinochloa (Echinochloaspp.), Sprangletop (Leptochloaspp.), genus fimbristylis (Fimbristylisspp.), Panicum (Panicumspp.), phalaris arundinacea (Phalarisspp.), Poa L. (Poaspp.), the annual weed such as setaria (Setariaspp.) and Cyperus (Cyperus), and Agropyron (Agropyron), Cynodon (Cynodon), cogon (Imperata) and sorghum in perennial kind and perennial Cyperus kind.

For broadleaf weed kind, action spectrum extends to subordinate, such as abutilon (Abutilonspp.), Amaranthus (Amaranthusspp.), Chenopodium (Chenopodiumspp.), crowndaisy chrysanthemum belongs to (Chrysanthemumspp.), galium (Galiumspp.), Ipomoea (Ipomoeaspp.), Kochia (Kochiaspp.), lamium (Lamiumspp.), Matricaria (Matricariaspp.), ipomoea (Pharbitisspp.), Polygonum (Polygonumspp.), chrysanthemum harvest spp (Sidaspp.), sinapsis alba belongs to (Sinapisspp.), Solanum (Solanumspp.), Stellaria (Stellariaspp.), Veronica (Veronicaspp.), Eclipta prostrata belongs to (Ecliptaspp.), Daubentonia (Sesbaniaspp.), Aeschynomenespp. with Viola (Violaspp.), the annual weed such as Xanthium (Xanthiumspp.), and japanese bearbind belongs to (Convolvulus), Cirsium (Cirsium), the perennial weeds such as Rumex (Rumex) and artemisia (Artemisia).

Herbicidal combinations of the present invention covers wider weeds spectrum.Such as all have following weeds and well prevent and kill off: in monocotyledon weed with subordinate, such as Echinochloa, Panicum, Poa L., Sprangletop, Brachiaria, knotgrass, setaria, Cyperus, Monochoria (Monochoriaspp.), genus fimbristylis, Sagittaria (Sagittariaspp.), Eleocharis (Eleocharisspp.), Scirpus (Scirpusspp.), Waterplantain (Alismaspp.), leaf of bamboo Lepidium (Aneilemaspp.), water screening spp (Blyxaspp.), eriocaulon buergerianum (Eriocaulonspp.), Potamogeton (Potamogetonspp.) etc. is all prevented and kill off very well, particularly following kind: water barnyard grass (Echinochloaoryzicola), Monochoria vaginalis (Monochoriavaginalis), yak grass (Eleocharisacicularis), scouring rush's shape water chestnut (Eleochariskuroguwai), difformed galingale herb (Cyperusdifformis), Herba Cyperi Glomerati (Cyperusserotinus), short arrowhead (Sagittariapygmaea), alisma canaliculatum (Alismacanaliculatum), firefly Lin (Scirpusjuncoides).When broadleaf weed, activity profile extends to subordinate, such as Polygonum, Han Lepidium (Rorippaspp.), joint joint Lepidium (Rotalaspp.), Vandellia (Linderniaspp.), Bidens (Bidensspp.), cusp Pittosporum (Sphenocleaspp.), horsefly eye belongs to (Dopatriumspp.), Eclipta prostrata belongs to (Ecliptaspp.), Elatine ambigua (Elatinespp.), Gratiola (Gratiolaspp.), Vandellia (Linderniaspp.), ludwigia (Ludwigiaspp.), Oenanthe (Oenanthespp.), Ranunculus (Ranunculusspp.), chilly belongs to (Deinostemaspp.) etc. in pool.Particularly such as following kind: mexicana (Rotalaindica), cusp flower (Sphenocleazeylanica), Procumbent Falsepimpernel (Linderniaprocumbens), false loosestrife (Ludwigiaprostrate), pondweed (Potamogetondistinctus), waterwort (Elatinetriandra), Chinese celery (Oenanthejavanica).

Herbicidal combinations of the present invention includes the active component (I) of effective amount and (II) has synergy.Synergy is can be observed when jointly or almost using active component (I) and (II) simultaneously; When using active component (I) and (II) respectively in the different time, also can be observed synergy; Also can sequential application (I) and (II), such as, use before first bud and then use after bud, or first use after early stage bud, then use after mid-term or later stage bud.Preferably jointly or almost use active component (I) and (II) at this simultaneously, and particularly preferably jointly use.

A kind of method of preventing and kill off undesirable plant, it is characterized in that, the active component (I) of Herbicidal combinations according to claim 1 and (II) are applied to undesirable plant, its seed or vegetative propagation organ jointly or individually, or do not wish the region of plant growth.Described undesirable plant is unifacial leaf, broadleaf weed.

If Herbicidal combinations of the present invention is applied to soil surface before germination, then prevent weeds seedling from germinateing completely, or weed growth is to cotyledon period, but then it just stop growing, and final completely dead after two thoughtful surroundings.

If after germination described reactive compound to be applied to the green parts of plant, growth just sharply can stop in the suitable short time after treatment equally, and the vegetative period of this ruderal plant when remaining on time of application point, or it is completely dead after some time, thus with pole in this way early and eliminate the competition produced by the weeds being harmful to crop plants constantly.For paddy rice, also can be applied in water by described Herbicidal combinations, then it is ingested by soil, bud and root.

When active component (I) and active component (II) are used jointly, there is chemiluminescence.At this, the activity of described composition is higher than the expection summation of each herbicidal activity used.Synergy makes rate of application reduce, prevent and kill off the broad leaved weed of more wide range, grassy weed and sedge, herbicide effect onset is faster, the duration is longer, better prevent and kill off by only using once or several times just to have noxious plant and can the phase of using be widened.The effective dose of the dosage used in described Herbicidal combinations and compound (I) and (II) is all adjustable to lower level, is low to moderate optimum degree to make it to the effect of soil.This makes it first not only can be applied to sensitive crop, also almost avoids groundwater contamination.Herbicidal combinations of the present invention makes rate of application needed for active component reduce significantly.

Above-mentioned characteristic and advantage, thus are guaranteed and/or increase yield level to be necessary from the angle of quality and quantity to keep agricultural/forestry/horticultural crop or greenery patches/meadow from undesirable competitive plant for weed control.With regard to described characteristic, this new Herbicidal combinations has surmounted the state of the art of this area significantly.

The present invention also provides selectivity to prevent and kill off the method for undesirable plant, preferably in crop plants, particularly prevent and kill off undesirable plant in rice crop, the method comprises as the active component (I) of Herbicidal combinations of the present invention and (II), such as be applied to plant (such as noxious plant together or respectively, as unifacial leaf or dicotyledonous broad leaved weed, grassy weed, sedge or undesirable crop plants), seed (such as caryopsis, seed or vegetative propagation organ, the such as branch portion of stem tuber and band bud), or be applied to (the region of such as cultivating, region of plant growth, its also available water covering).A kind of weed killer herbicide can before another kind of weed killer herbicide, be applied to the region (region of such as cultivating) of plant, seed or plant growth afterwards or with it simultaneously.

Undesirable plant is interpreted as meaning growth and is not wishing all plants in its place grown.These can be, such as, noxious plant (crop plants of such as unifacial leaf or broadleaf weed, grassy weed, sedge or not (II)), comprises those plants such as some weeding active compound (such as glyphosate, Glufosinate, atrazine, imidazolinone herbicide, sulfonylurea) to resistance.

Herbicidal combinations of the present invention optionally for preventing and kill off undesirable plant in following plant, such as crop plants such as crops, such as monocot crops, as cereal (such as wheat, barley, rye, oat, paddy rice, corn, broomcorn millet), or dicotyledonous crops, such as sugar beet, sugarcane, rape, cotton, sunflower and leguminous plant, such as Glycine is (as soybean (Glycinemax.), such as Non-transgenic soybean (such as conventional cultivation kind, as STS cultivated species) or genetically engineered soybean (such as RR soybean or LL soybean) and crossbreed thereof), Phaseolus (Phaseolus), Pisum (Pisum), Vetch (Vicia) and Arachis (Arachis), or the vegetable crop of various botany classification, such as potato, leek, cabbage, carrot, tomato, onion, in fruit plantation in (plantation crops), greenery patches, lawn and pastoral area, or on non-crop area (square of such as residential area or industrial area, railroad track), particularly in rice crop.Preferably also the noxious plant germinateed (such as broad leaved weed, grassy weed, sedge or undesirable crop plants) is used before noxious plant germinates, and have nothing to do with the vegetative period of the crop sow/planted.

Present invention also offers Herbicidal combinations of the present invention prevents and kill off undesirable plant purposes for selectivity, preferably in crop plants, particularly, prevent and kill off undesirable plant in rice crop.

Herbicidal combinations height of the present invention is applicable to the noxious plant optionally prevented and kill off in rice crop.Described rice crop is included in institute's likely form of most diverse Water Under rice cultivation, and such as dry land is cultivated, nonirrigated farmland is cultivated or paddy field is cultivated, and wherein irrigating can be natural (rainfall) and/or artificial (pouring, flood irrigation).Paddy rice for this object can be conventional seed, the hybrid seed cultivated or has the seed (by suddenly change or transgenosis obtains) of the tolerance of resistance-at least, and it can be derived by indica type or round-grained rice type kind or its crossbreed.

By being usually used in the various application processes of rice herbicide to use Herbicidal combinations of the present invention.Particularly preferably, it is used by spray application and/or by dipping.In dipping is used, when using, the water in paddy field had covered ground and had been up to 3-20cm.Then Herbicidal combinations of the present invention is directly placed in the water in paddy field.Worldwide, spray application is mainly used in the paddy rice of directly sowing, and dipping uses the paddy rice being mainly used in transplanting.

If Herbicidal combinations of the present invention is formulated as such as single component-suitable by known method, with other reactive compound, additive and/or common dosage forms auxiliary agent-mix preparation, then use after said composition in a usual manner dilute with water; Or be formulated as a barrel mix formulation by jointly being diluted by each component water that preparation or part are prepared separately separately.Can also separate administration prepare separately or the independent each component prepared of part.Also many parts can be divided to use described weed killer herbicide or Herbicidal combinations (sequential application), such as, before first seed dressing is used or is sowed/plantation pre-treatment or bud before use after then carry out bud after use or use after early stage bud, use after then carrying out mid-term or later stage bud.Preferably jointly use at this or almost use the reactive compound of described composition simultaneously, particularly preferably jointly using.

Described active component (I) and (II) jointly or respectively can be converted into conventional formulation, such as solution, emulsion, suspending agent, pulvis, foaming agent, paste, granule, aerosol, with the microcapsules in the natural and synthetic material of reactive compound dipping and polymeric material.Also can mention being specifically designed to and cultivate the preparation of paddy rice, such as by shake bottle use again by the water-soluble solution of paddy field and distribution disseminate use granule, especially big granule, floating particle agent, floating suspension emulsion.Described preparation can comprise conven-tional adjuvants and additive.

Prepare these preparations in known manner, such as, use surfactant to prepare by being mixed with filler by described reactive compound, optionally.

If filler used is water, also can use such as organic solvent as secondary solvent.Main suitable liquid flux is: aromatic compounds, such as dimethylbenzene, toluene or Fluhyzon; Chlorinated aromatic hydrocarbons and chlorinated aliphatic hydrocarbons, such as chlorobenzene, vinyl chloride or carrene; Aliphatic hydrocarbon, such as cyclohexane or paraffin, as mineral oil fractions, mineral oil and vegetable oil; Alcohols, such as butanols or ethylene glycol and ether thereof and ester; Ketone, such as acetone, methyl ethyl ketone, methyl iso-butyl ketone (MIBK) or cyclohexanone; Intensive polar solvent, such as dimethyl formamide and dimethyl sulfoxide (DMSO), Yi Jishui.

Suitable solid carrier is: the natural minerals of such as ammonium salt and pulverizing, such as kaolin, clay, talcum, chalk, quartz, attapulgite, montmorillonite or diatomite; With the synthetic mineral pulverized, such as high dispersive silica, aluminium oxide and silicate; The solid carrier being applicable to granule is: such as pulverize and the natural crystal of classification, such as calcite, marble, float stone, sepiolite and dolomite, and the synthesis particle of inorganic and organic powder, and the particle of organic material (such as sawdust, coconut husk, corncob and tobacco rods).

Suitable surfactant is: such as nonionic and anion emulsifier, such as polyoxyethylene fatty acid ester, polyoxyethylene aliphatic alcohol ether, such as alkylaryl polyglycol ether, alkylsulfonate, alkyl sulfate, arylsulphonate, and protein hydrolysate; Suitable dispersant is: such as lignin sulfite and methylcellulose.

Tackifier can be used, such as carboxymethyl cellulose in described preparation; Natural and the synthetic polymer of powder, particle or latex form, such as gum Arabic, polyvinyl alcohol and polyvinyl acetate; And natural phospholipid, such as cephalin and lecithin and synthetic phospholipid.Other possible additives are mineral oil and vegetable oil.

Colouring agent can be used, such as inorganic pigment, as iron oxide, titanium oxide and Prussian blue; And toner, such as alizarin colouring agent, azo colouring agent and metal phthalocyanine colouring agent; And micronutrient, such as molysite, manganese salt, boron salt, mantoquita, cobalt salt, molybdenum salt and zinc salt.

In described Herbicidal combinations, the content of active component (I) and (II) accounts for the 5%-90% of described Herbicidal combinations, preferred 10%-80%, more preferably 20%-60%.

Active component (I) and (II) also can be used for preventing and kill off undesirable plant using itself or as the dosage form mixed with other agricultural chemical activity compounds (example is weed killer herbicide as is known), such as management of weeds or for preventing and kill off undesirable crop plants, also can be such as finished product preparation or bucket and mixing thing.

Active component (I) and (II) can itself, its dosage form or used by dilution type of service prepared therefrom further, such as wetting powder, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspension emulsion, water dispersible granules, microcapsule suspension-suspendinagent agent, ultra low volume liquids use them.

Described reactive compound can be applied to plant (such as noxious plant, such as unifacial leaf or dicotyledonous broad leaved weed, grassy weed, sedge or undesirable crop plants), plant propagation material (such as caryopsis, seed or vegetative propagation organ, the such as branch portion of stem tuber or band bud) or cultural area (such as soil), preferably be applied to green plants and plant parts and, if suitable, be additionally applied to soil.Possible use is that the form of mixing thing with bucket uses a described reactive compound jointly, is wherein mixed in groove together with water by the concentrate formulation that the best of each reactive compound is prepared, then uses gained flushing liquor.

Associating herbicidal formulations according to Herbicidal combinations of the present invention has more wield form, because the amount of described component has been optimal proportion.In addition, the auxiliary agent in preparation can regulate each other and optimize.

Example of formulations

Embodiment 1:25% promazine Sulfometuron Methyl+1% metamifop oil-suspending agent

Promazine Sulfometuron Methyl 25%

Metamifop 1%

Methyl naphthalene sulfonate formaldehyde condensate 10%

Bentonite 1%

Glycerine 5%

Soybean oil complements to 100%

Active component, dispersant, wetting agent and each component of the corn wet goods ratio according to formula is mixed, after grinding and/or high speed shear, obtains 25% promazine Sulfometuron Methyl+1% metamifop oil-suspending agent.

Embodiment 210% promazine Sulfometuron Methyl+2% metamifop wetting powder

Promazine Sulfometuron Methyl 10%

Metamifop 2%

Lauryl sodium sulfate 10%

Sodium lignin sulfonate 5%

Kaolin complements to 100%

By the proportional components mixing by formula such as active component, various auxiliary agent and filler, after ultra-fine pulverizer disintegrating, namely obtain 10% promazine Sulfometuron Methyl+2% metamifop wetting powder.

Embodiment 31% promazine Sulfometuron Methyl+50% metamifop wetting powder

Promazine Sulfometuron Methyl 1%

Metamifop 50%

Calcium dodecyl benzene sulfonate 1%

Sodium lignin sulfonate 2%

White carbon complements to 100%

By the proportional components mixing by formula such as active component, various auxiliary agent and filler, after ultra-fine pulverizer disintegrating, namely obtain 1% promazine Sulfometuron Methyl+50% metamifop wetting powder.

Embodiment 40.1% promazine Sulfometuron Methyl+1% metamifop water dispersible granules

Promazine Sulfometuron Methyl 0.1%

Metamifop 1%

Sodium lignin sulfonate 4%

Lauryl sodium sulfate 5%

Urea 5%

Kaolin complements to 100%

Active component, dispersant, wetting agent, disintegrant and the filler ratio in formula is mixed, becomes wetting powder through air-flow crushing, then add a certain amount of water mixing extruding and make material.0.1% promazine Sulfometuron Methyl+1% metamifop water dispersible granules is obtained after drying screening.

Embodiment 55% promazine Sulfometuron Methyl+0.1% metamifop missible oil

Promazine Sulfometuron Methyl 5%

Metamifop 0.1%

Ethoxylated castor oil 5%

Calcium dodecyl benzene sulfonate 3%

1-METHYLPYRROLIDONE complements to 100%

Mentioned component is proportionally prepared, stirs and obtain homogeneous phase.

Embodiment 610% promazine Sulfometuron Methyl+0.1% metamifop oil suspension emulsion

Promazine Sulfometuron Methyl 10%

Metamifop 0.1%

Methyl naphthalene sulfonate formaldehyde condensate 5%

Ethoxylated castor oil 3%

Bentonite 1%

Aromatic solvent 10020%

Soybean oil complements to 100%

Promazine Sulfometuron Methyl, methyl naphthalene sulfonate formaldehyde condensate are obtained promazine Sulfometuron Methyl oil-suspending agent after grinding and/or high speed shear; Jiang metamifop, aromatic solvent 100, ethoxylated castor oil mixing and stirring get Dao the missible oil of metamifop; get Dao metamifop missible oil is joined in promazine Sulfometuron Methyl oil-suspending agent, obtains 10% promazine Sulfometuron Methyl+0.1% metamifop suspension emulsion.

Embodiment 725% promazine Sulfometuron Methyl+1% metamifop wetting powder

Promazine Sulfometuron Methyl 25%

Metamifop 1%

Lauryl sodium sulfate 10%

Sodium lignin sulfonate 5%

White carbon 10%

Kaolin complements to 100%

Said components is mixed in proportion, and grinds, pulverize, be prepared into wetting powder.

Embodiment 840% promazine Sulfometuron Methyl+4% metamifop water dispersible granules

Promazine Sulfometuron Methyl 40%

Metamifop 4%

MODIFIED LIGNOSULPHONATE 5%

Lauryl sodium sulfate 5%

Urea 5%

Kaolin complements to 100%

Promazine Sulfometuron Methyl active component, dispersant, wetting agent, disintegrant and the filler ratio in formula is mixed, becomes wetting powder through air-flow crushing; Jia Ru metamifop mixes again; Add a certain amount of water mixing extruding again and make material.40% promazine Sulfometuron Methyl+4% metamifop water dispersible granules is obtained after drying screening.

Embodiment 92% promazine Sulfometuron Methyl+50% metamifop suspension emulsion

Oil phase:

Promazine Sulfometuron Methyl 2%

1-METHYLPYRROLIDONE 10%

Ethoxylated castor oil 5%

Aqueous phase:

Metamifop 50%

MODIFIED LIGNOSULPHONATE 1%

Water complements to 100%

Metamifop is dissolved in 1-METHYLPYRROLIDONE, adds ethoxylated castor oil and obtain oil phase; According to formula by promazine Sulfometuron Methyl, MODIFIED LIGNOSULPHONATE and water, sand milling obtains the suspension aqueous phase of promazine Sulfometuron Methyl; Under agitation oil phase is added aqueous phase and obtain suspension emulsion.

Embodiment 1010% promazine Sulfometuron Methyl+10% metamifop wetting powder

Promazine Sulfometuron Methyl 10%

Metamifop 10%

Sodium lignin sulfonate 1%

NaLS 2%

The silicic acid 1% of high degree of dispersion

Kaolin complements to 100%

Embodiment 111% promazine Sulfometuron Methyl+25% metamifop coated granule

Promazine Sulfometuron Methyl 1%

Metamifop 25%

Polyethylene glycol 3%

Calcium carbonate complements to 100%

In a mixer, by levigate active component even spread on the carrier soaked by polyethylene glycol.Dust-free coated granules agent can be obtained in this way.

Embodiment 121% promazine Sulfometuron Methyl+5% metamifop wetting powder

Promazine Sulfometuron Methyl 1%

Metamifop 5%

Lauryl sodium sulfate 1%

Sodium lignin sulfonate 1%

White Carbon black complements to 100%

Embodiment 135% promazine Sulfometuron Methyl+5% metamifop extrudes granule

Promazine Sulfometuron Methyl 20%

Metamifop 10%

Sodium lignin sulfonate 4%

Carboxymethyl cellulose 2%

Kaolin complements to 100%

Active component is mixed with auxiliary agent and grinds, mixture water-wet.This mixture is extruded, then dry in the air stream.

Embodiment 140.1% promazine Sulfometuron Methyl+10% metamifop microcapsule suspension-suspendinagent agent

ATLOX ^TM49134%

Citric acid 0.05%

Catalyzer 0.1%

Water 13%

Metamifop 10%

PAPI1.35%

SOLVESSO ^TM20010%

ATLOX ^TM491316%

Dispersant LFH0.3%

Defoamer 0.16%

Urea 8.4%

Promazine Sulfometuron Methyl 0.1%

Water complements to 100%

By poly methylene poly phenyl poly isocyanate (PAPI), metamifop, SOLVESSO ^tM200 oil phases formed add containing ATLOX ^tMin the aqueous solution of 4913, form emulsion.Then heat and be incubated 50 ^ocatalyst reaction is added 2 hours under C.After cooling, get is Dao the microcapsules of metamifop.

ATLOX ^tM4913, dispersant LFH, defoamer, urea, promazine Sulfometuron Methyl and water mix in proportion, and through sand milling, are prepared into suspending agent.

Get Dao metamifop microcapsules is added in the suspending agent of promazine Sulfometuron Methyl, stirs and obtain 0.1% promazine Sulfometuron Methyl+10% metamifop microcapsule suspension-suspendinagent agent.

Embodiment 152% promazine Sulfometuron Methyl+3% metamifop suspended emulsion

Promazine Sulfometuron Methyl 2%

Metamifop 3%

SOLVESSO ^TM20010%

Ethoxylated castor oil 4%

Fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium 5%

MODIFIED LIGNOSULPHONATE 5%

Xanthans 1%

Bentonite 1%

Glycerine 5%

Water complements to 100%

Metamifop is dissolved in SOLVESSO ^tMin 200, add ethoxylated castor oil, get is Dao the missible oil of metamifop;

By promazine Sulfometuron Methyl, fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium, above-mentioned each component mixes in proportion, and through sand milling, is prepared into suspending agent.

In the suspending agent join the oil phase of Han metamifop containing promazine Sulfometuron Methyl, obtain suspended emulsion.

Embodiment 162% promazine Sulfometuron Methyl+10% metamifop missible oil

Promazine Sulfometuron Methyl 2%

Metamifop 10%

Ethoxylated castor oil 5%

Calcium dodecyl benzene sulfonate 3%

SOLVESSO ^tM200 complement to 100%

By above-mentioned each component mixing, be stirred to and obtain transparent homogeneous phase.

Embodiment 1720% promazine Sulfometuron Methyl+40% metamifop suspending agent

Promazine Sulfometuron Methyl 20%

Metamifop 40

Fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium 10%

MODIFIED LIGNOSULPHONATE 5%

Xanthans 1%

Bentonite 1%

Glycerine 5%

Water complements to 100%

Each component mixes in proportion, and through sand milling, is prepared into suspending agent.

Embodiment 1840% promazine Sulfometuron Methyl+50% metamifop wetting powder

Promazine Sulfometuron Methyl 40%

Metamifop 50%

Sodium lignin sulfonate 1%

NaLS 2%

Kaolin complements to 100%

Embodiment 1920% promazine Sulfometuron Methyl+60% metamifop water dispersible granules

Promazine Sulfometuron Methyl 20%

Metamifop 60%

MODIFIED LIGNOSULPHONATE 5%

Lauryl sodium sulfate 5%

Urea 5%

Kaolin complements to 100%

Active component, dispersant, wetting agent and the filler ratio in formula is mixed, becomes wetting powder through air-flow crushing; Add a certain amount of water mixing extruding again and make material.20% promazine Sulfometuron Methyl+60% metamifop water dispersible granules is obtained after drying screening.

Embodiment 2020% promazine Sulfometuron Methyl+80% metamifop

Promazine Sulfometuron Methyl 20%

Metamifop 80%

Promazine Sulfometuron Methyl, metamifop is proportionally mixed.

Embodiment 2120% promazine Sulfometuron Methyl+60% metamifop+20% mefenpyrdiethyl

Promazine Sulfometuron Methyl 20%

Metamifop 60%

Mefenpyrdiethyl 20%

Promazine Sulfometuron Methyl, metamifop, mefenpyrdiethyl are proportionally mixed.

In above embodiment, proportioning is weight per distribution ratio.

Biological Examples

Test before bud:

Under greenhouse experiment, test plant is seeded in seedling alms bowl.Use standard soil as cultivation matrix.In the bud last stage, weed killer herbicide is administered to soil surface separately or with the form of combination.Consumption depends on determined optium concentration under field or greenhouse experiment.In post-evaluation in 2 ~ 4 weeks test, (100% effect=plant is completely dead; 0% effect=plant-less toxicity effect).Promazine Sulfometuron Methyl is with the combination table of metamifop reveals than using separately better preventive effect in this test, shows obvious synergistic effect.

When weed killer herbicide of the present invention is used before rudiment, can prevent weeds from emerging completely or then weed growth to cotyledon period stops growing and completely dead after 3 ~ 4 weeks.

Act on after the bud of weeding

Method

Unifacial leaf and dicotyledonous harmful plants and rice paddy seed or rhizome are placed in the peat basin (diameter 4cm) that sandy loam is housed, then cover with soil.Peat basin remains in greenhouse under optimum condition.In addition, the noxious plant run in rice cultivating is cultivated in peat basin, and makes the water surface than soil surface height 2cm.

Cultivation starts latter about 4 weeks, in 2 leaf phases leaf phase to 4 process test plants.In order to cultivate plants further, subsequently peat basin is remained in greenhouse under optimum condition.Three kinds of reagent are prepared: 1, promazine Sulfometuron Methyl according to constant weight percentage; 2, metamifop; 3, promazine Sulfometuron Methyl+metamifop.Afterwards by above-mentioned each reagent dilute with water, obtain medicament dilution.

Carry out under the visual score of herbicidal effect is up to the time interval of 21 days after the treatment.Scoring carries out with the percentage compared with untreated check plant.0%=without activity of weeding, 100%=activity of weeding completely=kill completely.

When the effect of active compound combinations exceedes the summation of the effect when each reactive compound is used separately, there is synergistic function.The predictive role of the particular combination of two kinds of reactive compounds can use so-called " Colby formula " (see S.R.Colby, " CalculatingSynergisticandAntagonisticResponsesofHerbicid eCombinations ", Weeds1967,15,20-22) calculate:

E＝A+B-(A×B/100)

At this:

A, B=component I and II respectively when dosage is agai/ha (=g active substance/hectare) and bgai/ha with the activity of percentages.

E=when dosage is a+bgai/ha with the desired value of percentages.

Result

According to the composition of weed killer herbicide of the present invention (I) and (II) respectively for the important noxious plant (grassy weed of following wide spectrum, broad leaved weed, sedge) and useful plant test: moleplant seed (Leptochloachinensis), chickweed (Stellariamedia), Amaranthus retroflexus (Amaranthusretroflexus), green foxtail (Setariaviridis), volume stem knotweed (Fallopia (exPolygonum) Convolvulus), barnyard grass (Echinochloacrusgalli), piemarker (Abuthilontheophrasti), paddy rice (Oryzasativa), angustifolia arrowhead herb (Sagittariatrifolia), rhizoma alismatis (OrientalWaterplantainRhizome), Monochoria vaginalis (HerbofPygmyArrowhead), Monochoria korsakowii (Monochoriakorsakowii), Procumbent Falsepimpernel (Linderniaprocumbens), firefly Lin (ScirpusjuncoidesRoxb), difformed galingale herb (CyperusdifformisL.).

To the preventive effect of barnyard grass (Echinochloacrusgalli)

To the preventive effect of moleplant seed ((Leptochloachinensis))

To the preventive effect of Monochoria vaginalis (HerbofPygmyArrowhead)

To the preventive effect of firefly Lin (ScirpusjuncoidesRoxb)

To the preventive effect of difformed galingale herb (CyperusdifformisL)

Promazine Sulfometuron Methyl is with being combined in prevent and kill off on other grass family, broad-leaved section, sedge weed and also demonstrating obvious synergistic effect of metamifop.Can find out according to result of the test, the herbicidal effect of the Herbicidal combinations of promazine Sulfometuron Methyl+metamifop obviously adopts more separately promazine Sulfometuron Methyl Huo person metamifop better, possess obvious gain effect, and keep higher activity of weeding under the active ingredient of low usage amount; In re-compounded binary herbicide of the present invention, due to the existence of promazine Sulfometuron Methyl, it effectively ensure that preventing and kill off the weeds of the anti-sulfonylurea herbicide of current part, in addition, two kinds of herbicidal constituents are comparatively used separately in wherein any one composition, have wider herbicide spectrum, and this composition possess the characteristic of low toxicity, low-residual, significantly improve the preventive effect to weeds in crop growth environment, and reduce the infringement to crop plants.

Safety effect

Under greenhouse experiment, test plant is grown to the 4-leaf phase in plastic tank.In this stage, by independent promazine Sulfometuron Methyl, the composition of promazine Sulfometuron Methyl and safener, and promazine Sulfometuron Methyl is administered to test plant with metamifop or promazine Sulfometuron Methyl with the mixture of metamifop together with the material tested as safener.The aqueous solution of test substances is used to use.After using 3 weeks, use percentage to measure and evaluate weed killer herbicide to crop as rice crops toxicity.100% represents that test plant is completely dead, and 0% represents plant-less toxicity effect.

Unexpected discovery, specific safener is applicable to Herbicidal combinations of the present invention mixing.Therefore; the invention still further relates to a kind of selective herbicidal composition preventing and kill off the weeds of useful plants particularly in rice crops for selectivity; said composition contains promazine Sulfometuron Methyl, metamifop; with be selected from the safeners such as aforesaid benoxacor, fenclorim, dichlormide, mefenpyrdiethyl; said composition can protect useful plants (but not weeds) to avoid the phytotoxic effects of weed killer herbicide, also relates to described composition in the application of preventing and kill off the weeds in useful plants crop.

Claims

1. a Herbicidal combinations, is characterized in that, comprises active component (I) and (II), wherein

(I) compound for being described by formula (I):

（I）

And (II) is the compound described by formula (II):

（II）

The weight ratio (I) of described active component (I) and (II): (II) is 100: 1 to 1:100.

2. Herbicidal combinations according to claim 1, is characterized in that, the weight ratio (I) of active component (I) and (II): (II) is 50: 1 to 1:50.

3. Herbicidal combinations according to claim 1, is characterized in that, the weight ratio (I) of active component (I) and (II): (II) is 25: 1 to 1:25.

4. Herbicidal combinations according to claim 1, is characterized in that, the weight ratio (I) of active component (I) and (II): (II) is 10: 1 to 1:10.

5. Herbicidal combinations according to claim 1, is characterized in that, the weight ratio (I) of active component (I) and (II): (II) is 5: 1 to 1:5.

6. Herbicidal combinations according to claim 1, is characterized in that, comprises active component (I) and (II), filler and/or surfactant.

7. Herbicidal combinations according to claim 1, it is characterized in that: described Herbicidal combinations also comprises safener, safener is selected from benoxacor, fenclorim, dichlormide, mefenpyrdiethyl, wherein said safener relative to promazine Sulfometuron Methyl with the weight proportion of the active component of metamifop is 1:100 to 20:1.

8. Herbicidal combinations according to claim 1, is characterized in that, formulation is wetting powder, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspension emulsion, water dispersible granules, microcapsule suspension-suspendinagent agent, ultra low volume liquids.

9. Herbicidal combinations according to claim 1, is characterized in that, the content of active component (I) and (II) accounts for the 5%-90% of described Herbicidal combinations.

10. Herbicidal combinations according to claim 1, is characterized in that, the content of active component (I) and (II) accounts for the 10%-80% of described Herbicidal combinations.

11. Herbicidal combinations according to claim 1, is characterized in that, the content of active component (I) and (II) accounts for the 20%-60% of described Herbicidal combinations.

12. Herbicidal combinations according to claim 1 are preventing and kill off the application on undesirable plant.

13. Herbicidal combinations according to claim 1 are preventing and kill off the application on monocotyledon weed, broadleaf weed.

The unifacial leaf of 14. Herbicidal combinations according to claim 1 preventing and kill off in wheat, corn, soybean, sugar beet, sugarcane, cotton, paddy rice, flax, barley, oat, rye, triticale, rape, potato, broomcorn millet, herbage, greenery patches or lawn, in Zhong Huofei crop area, fruit plantation, the application of broadleaf weed.

15. 1 kinds of methods of preventing and kill off undesirable plant, it is characterized in that, the active component (I) of Herbicidal combinations according to claim 1 and (II) are applied to undesirable plant, plant propagation material jointly or individually, or the region of undesirable plant growth.