CN103271065B - Weeding composition - Google Patents

Abstract

The invention relates to a weeding composition, and especially relates to the weeding composition comprising propyrisulfuron and bentazone, use of the weeding composition, and a corresponding weed control method. Active ingredients of the weeding composition comprise the propyrisulfuron and the bentazone, wherein a weight ratio of the propyrisulfuron to the bentazone is 200:1 to 1:200. The weeding composition is used for control of gramineae weeds, broadleaf weeds and cyperaceae weeds in crop growth environment. According to the invention, the weeding composition is prepared by complex formulation of herbicides comprising the propyrisulfuron and the bentazone. Because the propyrisulfuron has control capability to weeds that show resistance to known sulfonylurea herbicides, and the weeding composition is prepared by binary complex formulation of the two herbicides, the weeding composition has an enhanced effect. Compared with single use of one herbicide, a weed killing spectrum is enlarged and control effect on the weeds is significantly enhanced.

Description

A kind of Herbicidal combinations

Technical field

What the present invention relates to is a kind of Herbicidal combinations, particularly relates to a kind of Herbicidal combinations containing promazine Sulfometuron Methyl and bentazone and uses thereof and corresponding weed control methods.

Background technology

At present, in order to promote the growth quality of crop, be constantly devoted in industry to develop the weed killer herbicide that herbicidal effect is high, have herbicide spectrum, low toxicity, low-residual, crop-selective excellence widely.In the production environment of crop, some weed killer herbicide of Long-Time Service can cause some weeds to produce certain resistance to corresponding medicine. up to now, many kinds of sulfonyl urea compounds are actually used in rice field, usually widely used is composite preparation form, containing two or more active components and for preventing the effective grassy weed kill agent miscellaneous of grassy weed in preparation.But in recent years, occur weeds sulfonylurea herbicide (such as bensulfuron-methyl, pyrazosulfuron and flazasulfuron) being had to resistance, their control has become problem.

Especially can grow the important monocotyledon weed affecting in a large number economic benefit in rice crops, such as mainly barnyard grass, ischaemum or moleplant seed, use a kind of rice crops weed killer herbicide known at present or its combination can not obtain satisfied control effects.Also noxious plant is found in addition: as Sagittaria, pin Lin belong to from global rice culture system, such as scouring rush's shape water chestnut, Herba Cyperi Glomerati, firefly Lin and other noxious plant, their mainly rudiments in perennial tissue from soil, therefore be not easy to control best broad leaved weed kind in control more difficult than the weeds of seed germination, and whole weeds spectrum.And resistant weed kind incidence increases (comprising Herba Cyperi Glomerati to belong to or pin Lin genus), even if this makes to use single-activity component or common combinations can not control these weeds.

Sulfonylurea herbicide is selectivity inner-adsorption conduction-type herbicide, is easily absorbed by the root of plant, leaf, and in xylem and phloem conduction, it can suppress the activity of vital acetolactate synthestase (ALS) in plant corpus.Still there are some difficult problems in sulfonylurea herbicide, wherein the most outstanding is that its residual key and weeds are to the resistance problems of sulfonylurea herbicide in application process.

The method of conventional control weeds is in existing preparation, add the active component effectively preventing and treating weeds sulfonylurea herbicide being had to resistance, thus adds for the active component number in the combination agent of weeds.In this case, need such weed killer herbicide, they have gratifying effect for the weeds of anti-sulfonylurea herbicide, and can reduce the amount of active component in composition.

The object of the invention is to provide a kind of activity of weeding mixture to make those skilled in the art at rice crops applied once or multiple weeds or a certain unmanageable weeds kind can be controlled after using these weed killer herbicides several times.

Promazine Sulfometuron Methyl (Propyrisulfuron) 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 weed.This product consumption is low, and the weeds some known sulfonylurea herbicide being produced to resistance have good preventive effect.

The molecular formula of promazine Sulfometuron Methyl is C16H18O5N7SCl, and its molecular structure is as follows:

Bentazone is again Lysimachia sikokiana pellet and bentazone, and chemical name is 3-isopropyl-(1H)-benzo-2,1,3-thiadiazine-4-ketone-2,2-dioxide, and its structural formula is:

Bentazone is contact killing type tool optionally herbicide after seedling, for cauline leaf process in seedling stage, is worked by blade contact.When using in dry land, bentazone is first transmitted to inhibited photosynthesis in chloroplast by blade face infiltration.When using in paddy field, bentazone not only by blade face infiltration but also by root absorption, was transmitted to cauline leaf, strongly hindered weeds photosynthesis and water metabolism, caused nutrition hungry, physiological function was lacked of proper care and lethal.Active ingredient is detoxified to the weak glycoconjugates metabolism of activity in tolerable crop body, and to crop safety, dispenser is after 6 ~ 18 weeks, and bentazone can be decomposed by the microorganisms in soil.Be mainly used in preventing and kill off cereal crop, cotton, peanut, soybean, sweet potato, tea place, careless pasture, rape and pea Tanaka sedge family and broad leaved weed, to flat bar Fischer grass, Herba Cyperi Glomerati, cyperus iria, difformed galingale herb, rhizoma alismatis, needle spikesedge herb, firefly Lin, Monochoria vaginalis, Monochoria korsakowii, mexicana, bur beggar-ticks, water starwort, dragon's tongue, cyperus iria L. rhizoma scirpi, angustifolia arrowhead herb, pondweed, clearvers, shepherd's purse, field thistle, Siberian cocklebur, the rhizome of nutgrass flatsedge, acalypha copperleaf, lamb's-quarters, thorn amaranth and branch amaranth, hold back broad leaved weed and the nutgrass flatsedges etc. such as blue dish, grass of meadow rue, kitchen garden effectively.

In current industry, common practice or the independent active ingredient using promazine Sulfometuron Methyl as weed killer herbicide prepare weeding medicine, do not occur the technology by promazine Sulfometuron Methyl and other effective ingredient mixtures so far.Research shows, also there is some deficiency separately using promazine Sulfometuron Methyl as the active ingredient of herbicide, and such as, herbicide not high enough to crop safety is composed wide not, medicament residue weak effect etc., thus causes control of weeds effect to be difficult to reach best.

Summary of the invention

The present invention seeks to for above-mentioned weak point, a kind of Herbicidal combinations is provided, by promazine Sulfometuron Methyl and bentazone are combined, obtain the Weeds distribution level needed for technical staff in a particularly advantageous manner, even comprise some weeds kind unmanageable.And, use the amount of application that the present invention's combination significantly can reduce a certain component in combination, therefore for user provides more economical occupation mode.

Herbicidal combinations of the present invention takes following technical scheme to realize:

A kind of Herbicidal combinations, it is characterized in that: the active principle of described Herbicidal combinations comprises promazine Sulfometuron Methyl and bentazone, wherein promazine Sulfometuron Methyl and bentazone weight proportion are 200:1 to 1:200.

As a further improvement on the present invention, described two kinds of active principle promazine Sulfometuron Methyls and bentazone weight proportion are 100:1 to 1:100, are more preferably 50:1 to 1:50, then are preferably 25:1 to 1:25.

Described a kind of Herbicidal combinations can be mixed with any formulation agriculturally allowed.Preferred wetting powder, soluble powder, aqua, missible oil, suspending agent, oil-suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, water dispersible granules, water-soluble granule, ZC, ultra low volume liquids, seed coat agent.

The present invention also provides a kind of Herbicidal combinations, and the active compound comprising described cooperative effective quantity mixes with at least one preparation technique usual auxiliaries.

The present invention also provides a kind of Herbicidal combinations, and the active principle of described Herbicidal combinations also comprises one or more in the third careless amine, bensulfuron-methyl, cyhalofop-butyl, pyrazosulfuron or two careless ether.

Described a kind of Herbicidal combinations, mixes the active compound including cooperative effective quantity with at least one preparation technique usual auxiliaries.

A kind of weed control methods, comprises and described Herbicidal combinations is applied to noxious plant, its plant parts or cultural area.

Described weed control methods, is characterized in that: noxious plant is grassy weed, broad leaved weed and sedge weed.

Described weed control methods, is characterized in that: cultural area is paddy field or dry land.

The present invention also aims to provide a kind of weed control methods applying above-mentioned Herbicidal combinations, comprise and Herbicidal combinations is applied to noxious plant, its plant parts or cultural area.Described noxious plant is grassy weed, broad leaved weed and sedge weed.As Stellaria, bean cotyledon Lepidium, Agrostis, knotgrass, Avena, setaria, Europe sinapsis alba genus, Lolium, Solanum, Brome, amur foxtail genus, Matricaria, Tong fiber crops genus, chrysanthemum harvest spp, Xanthium, Amaranthus, Chenopodium, Ipomoea, crowndaisy chrysanthemum genus, Bedstraw, Viola and Veronica.

Described noxious plant is short Brittle Falsepimpernel Herb, flat bar rattan grass, needle spikesedge herb, Japan's Fischer grass, Herba Cyperi Glomerati, cyperus iria, difformed galingale herb, barnyard grass, rice barnyard grass, lady's-grass, eleusine indica, moleplant seed, green foxtail, annual bluegrass, needle spikesedge herb, firefly Lin, Monochoria vaginalis, mexicana, water starwort, dragon's tongue, cyperus iria L. rhizoma scirpi, angustifolia arrowhead herb, pondweed, clearvers, shepherd's purse, field thistle, Siberian cocklebur, the rhizome of nutgrass flatsedge, acalypha copperleaf, lamb's-quarters, thorn amaranth and branch amaranth, hold back blue dish, grass of meadow rue, kitchen garden, Monochoria korsakowii, Procumbent Falsepimpernel etc.

The invention still further relates to a kind of purposes of Herbicidal combinations for management of weeds containing promazine Sulfometuron Methyl and bentazone.

The present invention compared with prior art has following beneficial effect:

Super additive effect is there is common use during the weed killer herbicide of promazine Sulfometuron Methyl and bentazone.In addition, the effect of composition is greater than the summation of the expection of the effect of single weed killer herbicide promazine Sulfometuron Methyl and bentazone, has synergistic function.Described super addition can reduce rate of application, prevent and treat the weeds of more wide spectrum (comprising grassy weed, broad-leaved section weeds, sedge weed); Herbicide effect onset is faster, and action time is longer, only uses once or several times and better can prevent and treat noxious plant, and extends possible administration period.There is not bad competitive plant to protect in crops in these performances just actual opposing weeds, thus guarantee and improve productive rate to be needs from Quality and yield aspect.The described performance of new composition of the present invention is significantly more than routine techniques level.

Embodiment

The invention provides a kind of Herbicidal combinations, comprise (a) promazine Sulfometuron Methyl and (b) bentazone of herbicidally effective amount.

Herbicidal combinations of the present invention comprises promazine Sulfometuron Methyl and the bentazone of synergy amount.The weight proportion of promazine Sulfometuron Methyl and bentazone is 200:1 to 1:200.As a further improvement on the present invention, described two kinds of active component weight proportions are 100:1 to 1:100, are more preferably 50:1 to 1:50, then are preferably 25:1 to 1:25.

The combination of promazine Sulfometuron Methyl and bentazone has exceeded the addition to controlling weeds of expecting in principle, therefore in following two, the sphere of action of two kinds of active components has particularly been widened: first, reduce the consumption of individualized compound, maintain good exposure level simultaneously; Secondly, when single material becomes invalid from the viewpoint of agricultural under low amount ranges, the present composition also can obtain high control of weeds level.Result has significantly widened weeds spectrum, adds the selectivity to useful plants crop in addition, and this is required and expectation when being not intended to excessive use active component just.The present composition, while keeping preventing and treating the weeds in useful plants well, also has larger adaptability to succession crop.Being combined in of promazine Sulfometuron Methyl and bentazone economy and environment all has a significance.

The present invention also provides a kind of synergistic herbicidal compositions, and the active compound comprising described cooperative effective quantity mixes with at least one preparation technique usual auxiliaries.

The auxiliary agent used in synergistic herbicidal compositions of the present invention comprises liquid-carrier, solid carrier, dispersant, emulsifier, stabilizing agent, antifreezing agent, thickener etc. and other is of value to the known substance that active ingredient is stablized in the formulation and drug effect plays, all various compositions that are conventional in agricultural chemicals or permission use, be not particularly limited, concrete composition and consumption are determined by simple experiment according to recipe requirements.

The liquid-carrier being applicable to preparation synergistic herbicidal compositions of the present invention comprises aromatic hydrocarbons, aliphatic hydrocarbon.Particularly suitable be polar solvent, as alcohols and their ether and ester.In addition vegetable oil and the molten fiber of methyl is also had.Meanwhile, the mixture of different liquids is also applicable.

The solid carrier being applicable to synergistic herbicidal compositions of the present invention is diatomite, Magnesiumaluminumsilicate, atlapulgite, kaolin, clay, gypsum, bentonite, white carbon, precipitated calcium carbonate, lime stone, wood chip, corn starch, soluble starch etc.

The emulsifier being applicable to preparation synergistic herbicidal compositions of the present invention can be anion and/or non-example type emulsifier, such as alkylphenol polyoxyethylene, alkylphenol-polyethenoxy polyethenoxy ether, Ben-zylphenol Polyoxyethyl Ether, polyoxyethylene fatty acid ester, polyoxyethylene aliphatic alcohol ether, polyoxyethylene fatty amine, alkyl phenol polyglycol ether etc.

The dispersant being applicable to preparation synergistic herbicidal compositions of the present invention can be alkylnaphthalene sulfonate, two (alkyl) naphthalenesulfonate formaldehyde condensation compound, naphthalene sulfonic acid-formaldehyde condensation product, alkylphenol-polyethenoxy based phosphates, alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, alkylphenol polyoxyethylene, castor oil ethylene oxide adduct, oxirane-propylene oxide block copolymer, alkylphenol polyoxyethylene formaldehyde condensation is dirty, octylphenol polyethylene oxyethylene group ether sulfate and methylcellulose.Such as sodium lignin sulfonate, calcium lignosulfonate, methyl naphthalene sulfonate formaldehyde condensate, naphthalene sulfonate formaldehyde condensation dirt, methanonaphthalene sodium sulfonate etc.

Other additive, can enumerate when preparation usually with the carboxymethyl cellulose that auxiliary agent form uses, ethylene glycol and propane diols etc.

Synergistic herbicidal compositions in the present invention can also contain colouring agent, such as inorganic pigment iron oxide, titanium oxide or Prussian blue; Organic dyestuff alizarin, azo dyes, metal phthalocyanine orchid or kiton colors etc.

Any conventional form can use composition of the present invention.The blade face Exemplary dosage forms of premix composition is:

GR: granule

WP: wetting powder

WG: water dispersibles granula

SG: soluble granule

SL: soluble concentrate

EC: missible oil

EW: emulsion, aqueous emulsion

ME: microemulsion

SC: suspending agent

CS: microcapsule suspending agent

OD: oil-based suspension

SE: suspension emulsion

FS: seed coat agent

The preferred formulation of the present invention can be liquor, aqua, soluble powder, soluble granula, wetting powder, missible oil, suspending agent, oil-suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, water dispersible granules, ZC, ultra low volume liquids, seed coat agent.

For water dispersible granules, those skilled in the art are familiar with the corresponding auxiliary agent of use and complete the present invention very much.Dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, alkylphenol polyoxyethylene, EO/PO block polyether; Wetting agent is selected from alkyl sulfate, alkylsulfonate, naphthalene sulfonate, sodium lignin sulfonate, fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene; Disintegrant is selected from ammonium sulfate, sodium sulphate, sodium chloride, ammonium chloride, urea, sucrose, glucose, carboxymethyl cellulose, soluble starch, polyvinylpyrrolidone; Binding agent is selected from polyvinyl alcohol, soluble starch, dextrin, xanthans, carboxymethyl (ethyl) cellulose family; Filler is selected from diatomite, kaolin, white carbon, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay.

To wetting powder, spendable auxiliary agent has: dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate; Wetting agent is selected from alkyl sulfate, alkylsulfonate, naphthalene sulfonate; Filler is selected from ammonium sulfate, urea, sucrose, glucose, diatomite, kaolin, white carbon, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay.

To suspending agent, spendable auxiliary agent has: dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, TERSPERSE 2425 (Huntsman Corporation of the U.S. produces, alkyl naphthalene sulfonic acid salt); Emulsifier is selected from Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: sorbitan monostearate), emulsifier T-60 (common name: sorbitan monostearate APEO), agriculture breast 1601# (common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), TERSPERSE 4894 (Huntsman Corporation of U.S. product); Wetting agent is selected from alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500 (Huntsman Corporation of U.S. product); Thickener is selected from xanthans, polyvinyl alcohol, bentonite, aluminium-magnesium silicate; Preservative is selected from formaldehyde, benzoic acid, Sodium Benzoate; Defoamer is silicone based defoamer; Antifreezing agent is selected from ethylene glycol, propane diols, glycerine, urea, inorganic salts (as sodium chloride).

To dispersibling oil-suspending agent, spendable auxiliary agent has: dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE 2425, emulsifier is selected from the serial emulsifier (BY-110 of BY (castor oil polyoxyethylene ether), BY-125, BY-140) Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: sorbitan monostearate), Tween-60 # (common name: sorbitan monostearate APEO), agriculture breast 1601# (common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), TERSPERSE4894, wetting agent is selected from alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE 2500, thickener is selected from white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate, antifreezing agent is selected from ethylene glycol, propane diols, glycerine, urea, inorganic salts (as sodium chloride), stabilizing agent is selected from epoxidized soybean oil, epoxychloropropane, triphenyl phosphate, dispersion medium is selected from soybean oil, rapeseed oil, corn oil, methyl oleate, diesel oil, machine oil, mineral oil.

The Exemplary dosage forms being applicable to bucket mixing composition is solution, dilution emulsion, suspending agent or its mixing and pulvis.

Usually, bucket mixing composition be with solvent (as water) dilution containing different agricultural chemicals, and one or more premix compositions of optionally auxiliary agent further.

Generally, blade face bucket mixture comprises 0.1-20%, the particularly reactive compound of 0.1-15%, and 99.9%-80%, the particularly solid-state or liquid flux (comprising ratio of solvent as water) of 99.9-85%, wherein auxiliary agent can be based on bucket mixture, the surfactant of content 0-20%, particularly 0.1-15%.

The pre-mixing agent of usual foliage applying comprises 0.1-99.9%, the particularly active compound component of 1-95%, and 99.9-0.1%, the particularly solid-state or liquid flux (comprising if ratio of solvent is as water) of 99-5%, wherein auxiliary agent can be based on pre-mixing agent, the surfactant of content 0-50%, particularly 0.5-40%.

Composition through preparation of the present invention comprises 0.5-99.9%, particularly 1-95%, the advantageously active compound component of 1-50%, and 99.5-0.1%, the particularly solid of 99-5% quality or liquid adjuvants (comprising if solvent is as water), wherein said auxiliary agent (or assistant agent) can be the surfactant of 0-50%, particularly 0.5-40% based on pre-mixing agent quality.

The unifacial leaf that the economy of Herbicidal combinations of the present invention to wide spectrum is important and dicotyledonous harmful plants have showed very strong activity of weeding.In addition, inventive compound combination can effectively control to be difficult to prevent and kill off and by the perennial broadleaf weed of seed or rhizome, root-like stock or other perennial tissue propagation.Prior to seeding, before seedling or postemergence application do not affect effect of the present invention.

Can also effectively control unifacial leaf broad leaved weed, such as annual barnyard grass and nutgrass flatsedge and perennial nutgrass flatsedge kind.

Inventive compound combination has remarkable result to the broad leaved weed such as arrowhead, rhizoma alismatis, mexicana, high mallow, pin Lin, the nutgrass flatsedge etc. that control to occur under specific cultivation condition in rice crops.

When Herbicidal combinations 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 week.

When inventive compound combination postemergence application is to green plant part, weed growth can be stoped rapidly and effectively equally after treatment.After a period of time, weeds keep the vegetative period existed in use, more or less die off rapidly, therefore use the present composition by this way and can prevent rapidly and enduringly the weed competition harmful to crop from reducing the loss of crop quality and quantity simultaneously.

The noxious plant controlled is needed to specify, particularly unmanageable grass family, dicotyledonous and/or sedge.The noxious plant that can control comprises, Stellaria, bean cotyledon Lepidium, Agrostis, knotgrass, Avena, setaria, Europe sinapsis alba genus, Lolium, Solanum, Brome, amur foxtail genus, Matricaria, Tong fiber crops genus, chrysanthemum harvest spp, Xanthium, Amaranthus, Chenopodium, Ipomoea, crowndaisy chrysanthemum genus, Bedstraw, Viola and Veronica.Especially flat bar rattan grass, needle spikesedge herb, Japanese Fischer grass, Herba Cyperi Glomerati, cyperus iria, difformed galingale herb, barnyard grass, rice barnyard grass, lady's-grass, eleusine indica, moleplant seed, green foxtail, annual bluegrass, needle spikesedge herb, firefly Lin, Monochoria vaginalis, mexicana, water starwort, dragon's tongue, cyperus iria L. rhizoma scirpi, angustifolia arrowhead herb, pondweed, clearvers, shepherd's purse, field thistle, Siberian cocklebur, the rhizome of nutgrass flatsedge, acalypha copperleaf, lamb's-quarters, thorn amaranth and branch amaranth, hold back blue dish, grass of meadow rue, kitchen garden etc., Procumbent Falsepimpernel, short Brittle Falsepimpernel Herb.

Herbicidal combinations of the present invention can use on the farmland of such as cultivating following crop:

Crops: corn, rice, wheat, barley, rye, oat, Chinese sorghum, cotton, soybean, peanut, buckwheat, beet, rape, sunflower, sugarcane, tobacco etc.

Vegetables: solanaceous vegetable (eggplant, tomato, green pepper, capsicum, potato etc.), cucurbitaceae vegetable (cucumber, pumpkin, little cucumber, watermelon, muskmelon etc.), brassicaceous vegetable (radish, turnip, horseradish, kohlrabi, Chinese cabbage, cabbage, leaf mustard, broccoli, cauliflower etc.), composite vegetable (burdock, crowndaisy chrysanthemum, lettuce etc.), liliaceous vegetable (green onion, onion, garlic, asparagus etc.), Umbelliferae vegetables (carrot, ocean celery, celery, the U.S. eats celery etc.), goosefoot vegetable (spinach etc.), Labiatae vegetables (purple perilla, peppermint etc.), strawberry, sweet potato, Chinese yam, taro etc.,

Fruit tree: pomaceous fruit (apple, European pear, Japanese pear, Hua Li etc.), kernel approaches (peach, Lee, nectarine, plum, cherry, apricot, plum etc.), citrus (orange, lemon, bitter orange, grapefruit etc.), nut fruits (Chinese chestnut, walnut, almond, American pistachios, cashew nut etc.), soft fruits (blueberry, tongue are mould, blackberry, blueberry, wood are mould), grape, persimmon, olive, loquat, banana, coffee bean, coconut, coconut oil etc.;

Lawn: Korea lawn grass class (Zoysia sinica, Korea's grass etc.), annual bluegrass class (kentucky blue grass, rough bluegrass etc.), fescue grass class (Festuca Arundinacea etc.), orchardgrass, timothy grass etc.;

Other: flowers class (rose, China pink, chrysanthemum, tulip, rough gentian, orchid etc.), biofuel plant (manioca, safflower, Chinese silvergrass, mestha, cassava etc.), ornamental foliage plant etc.

Also genetically modified crops are comprised in above-mentioned crop.

Herbicidal combinations of the present invention has selectivity for paddy rice.Thus, Herbicidal combinations of the present invention is suitable as paddy field weed-killer composite.

Super adding and (=synergy) effect can be produced during the combined administration of promazine Sulfometuron Methyl and bentazone.Described synergistic effect should be able to reduce the rate of application of each active substance, the drug effect improved under identical rate of application, prevent and treat still cannot prevent and treat so far species, extend administration period, the number of times used separately needed for minimizing.Therefore, for user, be resist system with more favourable weeds in ecology economically.This activity especially can reduce amount of application, control broad-leaved and the grassy weed of more wide spectrum, compensate for the active leak of antagonism weed population, more rapidly with active more reliably, the longer lasting period, only use once or several times and can control noxious plant completely and extend the working life of active component in combination.

In weeds in field control, need above-mentioned characteristic using the competition making crops break away from not need plant and as barrier, and/or the quality of increase yield.In above-mentioned characteristic, the present invention combines significantly beyond prior art.

In addition, the present invention well can also control resistance noxious plant.

In addition, the present invention also aims to provide a kind of weed control methods applying above-mentioned Herbicidal combinations, comprise and Herbicidal combinations is applied to noxious plant, its plant parts or cultural area.

Cultivation area be cultivated plant in the soil that growth or the seed of those cultivated plants have been sowed, and intend the soil of the above-mentioned cultivated plant of cultivation.

The cooperative effective quantity being applicable to the combination of composition of the present invention can according to condition at that time as changes such as the kinds of weed pressure, time of application, method of application, weather, soil regime, features of terrain, target crop.In practicing, enough provide about 0.001kg/ha-1.00kg/ha, preferably the rate of application of the active component of about 0.01 kg/ha-0.075 kg/ha is suitable.The usage amount of attention in following biological test example is lower than the amount being usually applied to large Tanaka, because herbicidal effect is exaggerated in such a situa-tion.

Particularly, in weed control methods of the present invention, first according to the real area of crop production environment need carrying out weed control, and the condition of production of weeds in above-mentioned environment, estimate the amount of the Herbicidal combinations roughly needed, choose arbitrarily wetting powder or missible oil or suspending agent or dispersible the Herbicidal combinations of oil-suspending agent or seed coat agent or microemulsion or aqueous emulsion or water dispersible granules, with thin up, certain density dilution is become to Herbicidal combinations, finally sprays in crop production environment.

If Herbicidal combinations of the present invention can promazine Sulfometuron Methyl and bentazone-suitable also have other conventional formulations-mix preparation form exist, it is usual manner dilute with water use subsequently, or also can be formed " bucket mixes thing " by the component of jointly diluting described independent preparation or the independent preparation of part with water.

According to formulation properties, application process can be selected from according to expection object and popular environment, as blade face, soak into, spray, dust, scattering selects.

The inventive method most preferably maybe will be used for the weeds in the region of long-term cropping for preventing and treating plant growth district.When for plant growth district, amount of application should be enough to control weed growth but can not produce serious permanent injury to crop.

Herbicidal combinations of the present invention can also can at postemergence application at preemergence application, and preferred postemergence application, particularly weed growth is early stage.Also be one of feature of the inventive method with Herbicidal combinations early time treatment before planting (particularly soil surface is used).

The present invention also comprises following Herbicidal combinations: it is except promazine Sulfometuron Methyl and bentazone, also comprise one or more other there is the agrochemical active ingredients of different structure, as weed killer herbicide, insecticide, bactericide or safener.

Preferably other weed killer herbicides comprise the Series of Water field herbicidals such as the third careless amine, bensulfuron-methyl, cyhalofop-butyl, pyrazosulfuron, two careless ethers.

The rate of application of the safe practice relevant to weed killer herbicide depends on the method used to a great extent.When field processes (use comprise safener, barrel cage mixture that Herbicidal mixtures combines or separate administration safener and Herbicidal mixtures mixture be all effective) weed killer herbicide to the ratio of safener be generally from 100:1 to 1:10. preferred 20:1 to 1:1. when field processes, generally use the safener of per hectare 0.001kg to 1.0kg, the safener of preferred per hectare 0.001kg to 0.25kg.

The present invention equally also comprises following Herbicidal combinations: it, except promazine Sulfometuron Methyl and bentazone, also comprises fertilizer, as ammonium sulfate, ammonium nitrate, urea, potassium nitrate and composition thereof.

example of formulations

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

Promazine Sulfometuron Methyl 25%

Bentazone 1%

Methyl naphthalene sulfonate formaldehyde condensate 10%

Bentonite 1%

Glycerine 5%

Corn 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% bentazone oil-suspending agent.

Embodiment 2 10 % promazine Sulfometuron Methyl+2% bentazone wetting powder

Promazine Sulfometuron Methyl 10%

Bentazone 2%

Lauryl sodium sulfate 10%

Sodium lignin sulfonate 5%

White carbon 10%

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% bentazone wetting powder.

Embodiment 3 1% promazine Sulfometuron Methyl+50% bentazone soluble powder

Promazine Sulfometuron Methyl 1%

Bentazone 50%

Calcium dodecyl benzene sulfonate 1%

Sodium lignin sulfonate 2%

Sucrose 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% bentazone soluble powder.

Embodiment 4 0.1% promazine Sulfometuron Methyl+1% bentazone soluble granula

Promazine Sulfometuron Methyl 0.1%

Bentazone 1%

Sodium lignin sulfonate 4%

Lauryl sodium sulfate 5%

Urea 5%

Sucrose 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% bentazone soluble granula is obtained after drying screening.

Embodiment 5 5% promazine Sulfometuron Methyl+0.1% bentazone missible oil

Promazine Sulfometuron Methyl 5%

Bentazone 0.1%

Ethoxylated castor oil 5%

Calcium dodecyl benzene sulfonate 3%

Dimethyl sulfoxide (DMSO) complements to 100%

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

Embodiment 6 10% promazine Sulfometuron Methyl+0.1% bentazone seed coat agent

Promazine Sulfometuron Methyl 10%

Bentazone 0.1%

Methyl naphthalene sulfonate formaldehyde condensate 5%

Ethoxylated castor oil 3%

Bentonite 1%

Aromatic solvent 100 20%

PVP –K30 1%

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; Bentazone, water, ethoxylated castor oil mixing and stirring are obtained the aqua of bentazone; The bentazone aqua obtained is joined in promazine Sulfometuron Methyl oil-suspending agent, obtains 10% promazine Sulfometuron Methyl+0.1% bentazone seed coat agent.

Embodiment 7 20% promazine Sulfometuron Methyl+0.1% bentazone wetting powder

Promazine Sulfometuron Methyl 20%

Bentazone 0.1%

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 8 40% promazine Sulfometuron Methyl+4% bentazone water dispersible granules

Promazine Sulfometuron Methyl 40%

Bentazone 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; Add bentazone again to mix; Add a certain amount of water mixing extruding again and make material.40% promazine Sulfometuron Methyl+4% bentazone water dispersible granules is obtained after drying screening.

Embodiment 9 0.1% promazine Sulfometuron Methyl+20% bentazone aqueous emulsion

Oil phase:

Promazine Sulfometuron Methyl 0.2%

Methyl oleate 10%

Ethoxylated castor oil 5%

Aqueous phase:

Bentazone 20%

The sodium salt 1% of the naphthalene sulfonic acids-formaldehyde condensation products of sulfonation

Water complements to 100%

Promazine Sulfometuron Methyl is dissolved in methyl oleate, adds ethoxylated castor oil and obtain oil phase; According to formula by the sodium salt of bentazone naphthalene sulfonic acids-formaldehyde condensation products, water, mix and obtain aqueous phase; Under agitation oil phase is added aqueous phase and obtain aqueous emulsion.

Embodiment 10 5% promazine Sulfometuron Methyl+10% bentazone wetting powder

Promazine Sulfometuron Methyl 5%

Bentazone 10%

Sodium lignin sulfonate 1%

NaLS 2%

The silicic acid 1% of high degree of dispersion

Kaolin complements to 100%

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

Embodiment 11 1% promazine Sulfometuron Methyl+20% bentazone coated granule

Promazine Sulfometuron Methyl 1%

Bentazone 20%

Polyethylene glycol 3%

The silicic acid 1% of high degree of dispersion

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 12 1% promazine Sulfometuron Methyl+5% bentazone wetting powder

Promazine Sulfometuron Methyl 1%

Bentazone 5%

Lauryl sodium sulfate 1%

Sodium lignin sulfonate 1%

Kaolin complements to 100%

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

Embodiment 13 20% promazine Sulfometuron Methyl+10% bentazone extrudes granule

Promazine Sulfometuron Methyl 20%

Bentazone 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 14 1% promazine Sulfometuron Methyl++ 25% bentazone aqua

Promazine Sulfometuron Methyl 1%

Bentazone 25%

Fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium 10%

MODIFIED LIGNOSULPHONATE 5%

Xanthans 1%

Bentonite 1%

Glycerine 5%

Water complements to 100%

Above-mentioned each component is mixed in proportion, is prepared into aqua.

Embodiment 15 0.1% promazine Sulfometuron Methyl+10% bentazone ZC

Atlox 4913 4%

Citric acid 0.05%

Catalyzer 0.1%

Water 13%

Bentazone 10%

PAPI 1.35%

Solvesso 200 10%

Atlox4913 16%

Dispersant LFH 0.3%

Defoamer 0.16%

Urea 8.4%

Promazine Sulfometuron Methyl 0.1%

Water complements to 100%

The oil phase that PAPI, promazine Sulfometuron Methyl, Solvesso 100 are formed is added in the aqueous solution containing Atlox4913, forms emulsion.Then heat and be incubated and add catalyst reaction 2 hours under 50oC.The microcapsules of promazine Sulfometuron Methyl is obtained after cooling.

Atlox 4913, dispersant LFH, defoamer, urea, bentazone and water mix in proportion, and obtain aqua.

The promazine Sulfometuron Methyl microcapsules obtained is added in the aqua of bentazone, stirs and obtain 0.1% promazine Sulfometuron Methyl+10% bentazone ZC.

Embodiment 16 30% promazine Sulfometuron Methyl+5% bentazone aqueous emulsion

Promazine Sulfometuron Methyl 30%

Bentazone 5%

Solvesso 200 10%

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%

Promazine Sulfometuron Methyl is dissolved in Solvesso 200, adds ethoxylated castor oil, obtain the missible oil of promazine Sulfometuron Methyl;

By bentazone, fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium, above-mentioned each component mixes in proportion, and is prepared into aqua.

Oil phase containing promazine Sulfometuron Methyl is joined in the aqua containing bentazone, obtains aqueous emulsion.

Embodiment 17 10% promazine Sulfometuron Methyl+2% bentazone missible oil

Promazine Sulfometuron Methyl 10%

Bentazone 2%

Ethoxylated castor oil 5%

Calcium dodecyl benzene sulfonate 3%

Solvesso100 complements to 100%

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

Embodiment 18 50% promazine Sulfometuron Methyl+50% bentazone

Promazine Sulfometuron Methyl 50%

Bentazone 50%

Promazine Sulfometuron Methyl, bentazone are proportionally mixed.

Embodiment 19 40% promazine Sulfometuron Methyl+40% bentazone+20% pair of careless ether

Promazine Sulfometuron Methyl 40%

Bentazone 40%

Two careless ether 20%

The acid of embodiment 20 40% promazine Sulfometuron Methyl+40% bentazone+20% Shuan Ben oxazole

Promazine Sulfometuron Methyl 20%

Bentazone 60%

Shuan Ben oxazole acid 20%

In above-mentioned example of formulations 1-embodiment 18, individually disclose the present invention using promazine Sulfometuron Methyl and bentazone as the different dosage form of the weed killer herbicide of active ingredient, but the present invention is not limited to above-described embodiment, in the embodiment that other are feasible, in composition, the proportioning of each chemical composition, working condition all can change.In the embodiment of the present invention 19, in order to weed killer herbicide more efficiently can be obtained, the active ingredient of above-mentioned Herbicidal combinations is except comprising above-mentioned two kinds of compounds, also can comprise one or more other effective herbicidal constituents (i.e. ternary or Recompounded multielement), such as, other compositions can comprise the Series of Water field herbicidals such as the third careless amine, bensulfuron-methyl, cyhalofop-butyl, Bentazon, pyrazosulfuron, carry out composite, significantly can promote the preventive effect of weeds by mentioned component according to constant weight percentage.

In above embodiment, proportioning is weight per distribution ratio.

In order to embody the weed control efficacy of weed killer herbicide of the present invention better, be described below with reference to specific experiment data.

biological test example

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, " Calculating Synergistic and Antagonistic Responses of Herbicide Combinations ", Weeds 1967,15,20-22) calculate as follows: if

X is the activity when using the reactive compound A that consumption is mppm for mg/ha or concentration;

Y is the activity when using the reactive compound B that consumption is nppm for ng/ha or concentration, is expressed as the percentage accounting for untreated control;

E is when using consumption for activity during m and n g/ha or the concentration reactive compound A and B that is m and n ppm,

So

If the activity of actual observation (O) is greater than expection active (E), so said composition super add and, namely there is synergistic effect.

Inventor is by a large amount of screening tests, the different ratio of promazine Sulfometuron Methyl and bentazone test and preventive effect analysis have been carried out a large amount of, find in certain ratio range, the Herbicidal combinations obtained has synergistic effect, and be not only the simple addition of two kinds of medicaments, be illustrated with following biologicall test example.

test before seedling:

Under greenhouse experiment, test plant is seeded in seedling alms bowl.Use standard soil as cultivation matrix.In the seedling last stage, weed killer herbicide is administered to soil surface separately or as a mixture.Consumption depends on determined optium concentration under field or greenhouse experiment.In 2-4 week post-evaluation test, (100% effect=plant is completely dead; 0% effect=plant-less toxicity effect).The mixture used in this test shows than using separately good result.

test after seedling:

Test: carry out Herbicidal Testing Trials for dissimilar weeds (rice barnyard grass, difformed galingale herb, Monochoria vaginalis, short Brittle Falsepimpernel Herb, angustifolia arrowhead herb).

Test method: load the paddy soils that the degree of depth is about 8cm in seedling alms bowl (diameter 8cm × degree of depth 12cm), to add water in this basin and in addition smooth, left standstill three days, be about the depth of 0.5cm apart from soil surface, sowing rice barnyard grass, difformed galingale herb, Monochoria vaginalis, short Brittle Falsepimpernel Herb, angustifolia arrowhead herb.Add water till the degree of depth apart from soil surface 3cm.One period of predetermined time is planted under irrigation conditions.When plant reaches the 3-4 leaf stage, transferred to by the seedling alms bowl of the predetermined number growing plant in a square plastic basin, being filled to wherein is highly 3cm.In the test plants using back type sprayer to be administered to separately or as a mixture by weed killer herbicide to be under water saturation soil condition.Consumption depends on determined optium concentration under field condition.(100% effect=plant is completely dead in chemical treatment post-evaluation in 3 weeks test; 0% effect=plant-less toxicity effect).The mixture used in this test shows good result.

Three kinds of reagent are prepared: 1, promazine Sulfometuron Methyl according to constant weight percentage; 2, bentazone; 3, promazine Sulfometuron Methyl+bentazone.Afterwards by above-mentioned each reagent dilute with water, obtain medicament dilution.After the medicament dilution process regular hour, observe the herbicidal effect to rice barnyard grass, difformed galingale herb, Monochoria vaginalis, short Brittle Falsepimpernel Herb, angustifolia arrowhead herb respectively.

The herbicidal effect to rice barnyard grass is observed after process surrounding

Process the herbicidal effect of the Monochoria vaginalis of antagonism sulfonylurea herbicide after five weeks

Process the herbicidal effect of the angustifolia arrowhead herb of antagonism sulfonylurea herbicide after five weeks

Process the herbicidal effect of the short Brittle Falsepimpernel Herb of antagonism sulfonylurea herbicide after five weeks

Process the herbicidal effect of the difformed galingale herb of antagonism sulfonylurea herbicide after five weeks

Can find out according to result of the test, the herbicidal effect of the Herbicidal combinations of promazine Sulfometuron Methyl+bentazone obviously adopt more separately promazine Sulfometuron Methyl or bentazone better, possess obvious gain effect, and the usage amount of active ingredient is also relatively little.In re-compounded binary herbicide of the present invention, due to the existence of promazine Sulfometuron Methyl, it effectively ensure that the control of the weeds to the anti-sulfonylurea herbicide of current part, in addition, two kinds of herbicidal constituents are comparatively used separately in wherein any one composition, there is wider herbicide spectrum, and this composition possesses the characteristic of low toxicity, low-residual, significantly improves the control efficiency to weeds in crop growth environment.

Composition of the present invention and class methods be described by specific embodiment.Those skilled in the art can use for reference the links such as the suitable feed change of content of the present invention, process conditions and realize other objects corresponding, its relevant change does not all depart from content of the present invention, similar replacement and change be all deemed to be included within scope of the present invention so will become apparent to those skilled in the art that.

Claims (7)

1. a Herbicidal combinations, is characterized in that: the active principle of described Herbicidal combinations is made up of promazine Sulfometuron Methyl and bentazone, and described promazine Sulfometuron Methyl and bentazone weight proportion are 25:1 to 1:25.

2. a kind of Herbicidal combinations according to claim 1, is characterized in that: described Herbicidal combinations can be mixed with any formulation agriculturally allowed.

3. a kind of Herbicidal combinations according to claim 1, is characterized in that: described Herbicidal combinations can be mixed with wetting powder, soluble powder, aqua, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, water dispersible granules, water-soluble granule, ultra low volume liquids, seed coat agent.

4. a Herbicidal combinations, is characterized in that: mixed with at least one preparation technique usual auxiliaries by the active compound comprising the cooperative effective quantity of claim 1.

5. a weed control methods, is characterized in that: described method comprises Herbicidal combinations according to claim 1 is applied to noxious plant or cultural area.

6. method according to claim 5, is characterized in that: noxious plant is grassy weed, broad leaved weed and sedge weed.

7. method according to claim 5, is characterized in that: cultural area is paddy field or dry land.