WO2020155605A1 - Herbicide composition containing pyroxasulfone and foramsulfuron - Google Patents

Abstract

Disclosed is an herbicide composition containing pyroxasulfone and foramsulfuron, comprising the following active ingredients in parts by weight: 1-80 parts of pyroxasulfone and 1-50 parts of foramsulfuron. The invention is used in sugar cane fields to prevent and remove annual broadleaf weeds, gramineous weeds and Cyperaceae weeds, primarily controlling crabgrass, barnyard grass, bristlegrass, caper spurge, goosegrass, wild millet, nut sedge, purslane, cocklebur, black nightshade, three-leaved beggar-ticks, goatweed, anise, datura, and hemp-nettle. The present invention uses a combination of pyroxasulfone and foramsulfuron to enhance the drug properties of the herbicide, and the weed control effectiveness on sugar cane fields is superior to the activity of each component when used alone, while also expanding the weeding spectrum. In addition, the herbicide combination is safe for sugar cane and meets the safety requirements of pesticide formulations.

Description

Herbicide composition containing sulfonepyrazole and carboxamidosulfuron-methyl Technical field

The invention belongs to the technical field of pesticides, and in particular relates to a herbicide composition containing sulfonepyrazole and carboxamidosulfuron.

Background technique

Pyroxasulfone, English name: Pyroxasulfone, chemical name: 3-[(5-Difluoromethoxy-1-methyl-3-trifluoromethylpyrazol-4-yl)-methylsulfonyl]- 4,5-Dihydro-5,5-dimethyl-1,2-oxazole. Sulfonepyrazole is mainly absorbed by the coleoptile of monocotyledonous plants or hypocotyls of dicotyledonous plants. After absorption, it conducts upwards. It inhibits cell growth by hindering protein synthesis and inhibits the respiration of plants to make weed buds and young Root growth stops and then dies; also as an inhibitor and uncoupling agent of the electron transport chain, it can inhibit photosynthesis of plants, interfere with the biosynthesis of plant proteins, affect cell division, and affect membrane biosynthesis and integrity. It is widely used in corn, cotton, beans, peanuts, potatoes, rapeseed, garlic, tobacco, sunflower, castor, green onions and other fields to control annual gramineous weeds and some broad-leaved weeds with small seeds. It has special effects on annual gramineous weeds such as crabgrass, setaria, goosegrass, barnyardgrass, stephen, wild oats, bluegrass, hard grass, and Eragrostis. It has specific effects on Chenopodiaceae, Amaranthaceae, Polygonaceae, Broadleaf weeds such as Commelina Commelina, Cow Chickweed, and Sisizi also have certain control effects.

Carboxamidosulfuron, English name: ForaMsulfuron, chemical name: 1-(4,6-dimethoxypyrimidin-2-yl)-3-(2-dimethylaminocarbonyl-5-formylaminophenyl) Sulfonylurea. Carboxamidosulfuron-methyl is a sulfonylurea herbicide and an acetolactate synthase (ALS) inhibitor. It can be absorbed by the roots and leaves of weeds. It is rapidly transmitted in the plant body and hinders valine, isoleucine, The synthesis of leucine inhibits cell division and growth. After the sensitive weed roots and leaves absorb the drug, it is transmitted in the plant body. The young shoots and roots quickly stop growing, and the young tissues turn yellow and then die. Widely used in cereals such as corn (summer corn, spring corn), sugar cane, etc.; safe for subsequent crops such as wheat, barley, oats, cotton, soybeans, peas, rape, sugar beet, and potatoes. It has excellent activity on annual or perennial grass weeds and broadleaf weeds. Gramineous weeds such as barnyardgrass, stephengrass, crabgrass, wild oats, brome, pseudosorghum, Poa, ryegrass, cricket grass, setaria, etc.; broadleaf weeds such as cocklebur, abutilon, Solanum, Polyporus, Portulaca, Amaranthus variabilis, Amaranthus amaranthus, Acanthopanax, Cocoon, Coatsweed, Humulus, Quinoa, Sorrel leaf Polygonum, Polygonum vulgare, Polygonum vulgare, Polygonum vulgare , Polygonum lilac, dandelion, blue vegetables, shepherd's purse, datura, chickweed, sage, field bindweed, etc.

Chloramben, English name: Chloramben, chemical name: 3-amino-2,5-dichlorobenzoic acid, is a benzoic acid herbicide, the liquid is rapidly absorbed by the stems and leaves of weeds, and can pass through the xylem duct and transpiration The flow conducts together, and can also be combined with photosynthesis products to conduct in the phloem sieve, and accumulate in the meristem (growth point) of the plant, and then produce toxic effects. It is widely used in wheat field, corn field, peanut field, sunflower field, cabbage, kidney bean, pepper, sugar beet, tomato and other vegetable fields to control annual broad-leaved weeds and a variety of gramineous weeds. The main target is barnyard grass. , Crabgrass, Kan Mai Niang, Setaria viridis and other annual weeds.

Farmland weeds compete with crops for nutrients, water, sunlight and space, hindering the ventilation and light transmission in the field, thereby reducing the yield and quality of crops; many weeds are intermediate hosts or lodging sites for pathogenic microorganisms and pests, which can cause diseases and pests happened. The control of weeds in farmland is an important part of agricultural production. Weeds in sugarcane fields mainly include barnyardgrass, thrush, iron thread, goosegrass, cocklebur, crabgrass, stephen, cyperus rotundus, clover, setaria, purslane, etc. At present, the herbicides in sugarcane fields are mainly formulated with one or more active ingredients such as atrazine, simazine, oxyfluorfen, metolachlor, alachlor, and 2-methyl-4 chloride. Long-term use of a single or the same herbicide will gradually increase the resistance of some weeds, and the weed control effect is not ideal.

Summary of the invention

The purpose of the present invention is to provide a herbicide composition containing sulfonepyrazole and carboxamidosulfuron-methyl, which can effectively control the annual grass family through the dual compound use of sulfonepyrazole and carboxamidosulfuron-methyl. Weeds, Cyperaceae weeds and broadleaf weeds expand the weed spectrum and enhance the weeding effect of sugarcane fields.

To achieve the above objective, the technical solution of the present invention is:

The herbicide composition containing sulfonepyrazole and carboxamidosulfuron-methyl of the present invention includes the following effective ingredients in parts by weight: 1-80 parts of sulfonepyrazole and 1-50 parts of carboxamidosulfuron.

Furthermore, the herbicide composition also includes 5-90 parts of chlormethuron.

Further, the herbicide composition includes the following effective ingredients in parts by weight: 20-70 parts of chlormethan, 1-30 parts of sulfonepyrazole, and 1-15 parts of carboxamidosulfuron.

Further, the herbicide composition is combined with a solvent and auxiliary materials to prepare a liquid preparation, and the auxiliary materials are emulsifiers, dispersants, thickeners, defoamers, antifreeze agents, pH regulators, stabilizers, and auxiliary materials. One or a mixture of two or more solvents.

Further, the solvent is water, glycerin, dimethyl sulfoxide, ethanol, propylene glycol, polyethylene glycols, sesame oil, soybean oil, cottonseed oil, peanut oil, liquid paraffin, ethyl oleate, isopropyl myristate One or a mixture of two or more;

The emulsifier is fatty acid soap, alkyl sulfonate, alkyl phenyl sulfate, phosphate, amine, quaternary ammonium salt, polyoxyethylene type, ethylene oxide and propylene oxide block copolymer, One or a mixture of two or more of fatty acid esters of polyhydric alcohols, polyvinyl alcohol, lecithin, lanolin, and gum arabic;

The dispersant is water glass, sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate, triethylhexyl phosphoric acid, sodium lauryl sulfate, methylpentanol, cellulose derivatives, polyacrylamide, One or a mixture of two or more of Gur gum and fatty acid polyethylene glycol ester;

The thickening agent is methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, silicon gel, starch, gelatin, sodium alginate, casein, guar gum , Chitosan, gum arabic, xanthan gum, soy protein gum, natural rubber, lanolin, agar, polyacrylamide butadiene rubber, styrene butadiene rubber, polyurethane, modified polyurea, one or a mixture of two or more ；

The defoaming agent is soybean oil, corn oil, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropanolamine ether, polyoxypropylene glyceryl ether and polyoxypropylene polyoxyethylene glyceryl ether, polydimethyl One or a mixture of two or more siloxanes;

The antifreeze agent is one or a mixture of two or more of calcium chloride, methanol, ethanol, ethylene glycol, propylene glycol, glycerol, lubricating oil, sugar, and honey;

The pH adjusting agent is one or a mixture of two or more of glacial acetic acid, phosphoric acid, benzoic acid, citric acid, sodium dihydrogen phosphate, sodium hydroxide, and disodium hydrogen phosphate;

The said stabilizer is one or a mixture of two or more of alkyl, aryl phosphate, phosphite, polyol, alkyl sulfonate and its substituted ammonium salt and substituted epoxy;

The cosolvent is one or a mixture of two or more of cyclohexanone, pyrrolidone, dimethylformamide and acetonitrile.

Further, the herbicide composition is combined with auxiliary materials to form a solid preparation, and the auxiliary material is one of a wetting agent, a dispersant, a stabilizer, an anti-decomposition agent, a disintegrant, a binder, and an inert filler Or a mixture of the two.

Further, the preparation method of the solid preparation of the herbicide composition includes the following steps:

Mix the active ingredients and inert fillers, pulverize them into fine powder, add wetting agents, dispersants, stabilizers, anti-decomposition agents, and disintegrants, and mix them evenly to make a powder;

Or on the basis of powder, add proper amount of binder to further prepare granule.

Further, the wetting agent is sodium lauryl sulfate, sodium dodecylbenzene sulfonate, calcium dodecylbenzene sulfonate, polyoxyethylene alkyl phenyl ether, styryl phenol, and formaldehyde resin , Polyoxyethylene ether, alkylphenol formaldehyde condensate, polyacrylate, pull open powder BX, penetrant T, private plate 20, tea dry powder, saponaria powder, soap powder, one of Tween series Or a mixture of two or more;

The dispersant is one or a mixture of two or more of lignin and its salts, cellulose derivatives, alginates, alkylnaphthalene sulfonates, and salts of formaldehyde condensates;

The stabilizer is one or two of magnesium stearate, zinc laurate, dibutyltin laurate, di-n-butyltin dodecyl mercaptan, butyl hydroxyanisole, epichlorohydrin, and benzoate A mix of the above;

The anti-decomposition agent is one or a mixture of two or more of zeolite, quicklime, magnesium oxide, salicylic acids, benzophenones, vitamin C, and antioxidants;

The disintegrant is sodium tripolyphosphate, metal stearate, dry starch, sodium carboxymethyl starch, low-substituted cellulose, polyvinylpyrrolidone, sodium bicarbonate, citric acid, bentonite, and ammonium sulfate One or a mixture of two or more;

The inert filler is kaolin, diatomaceous earth, talc, gypsum, montmorillonite, bentonite, attapulgite, dolomite, white carbon black, starch, light calcium carbonate, attapulgite, dolomite, white carbon One or a mixture of two or more of black, starch, and light calcium carbonate;

The binder is one or a mixture of two or more of gelatin, rubber, polyvinyl acetal, polycarbonate, nylon and polyfeng.

The invention is suitable for weeding in sugarcane fields, and is mainly used for controlling annual broad-leaved weeds, gramineous weeds and Cyperaceae weeds.

Further, the herbicide composition is used to control crabgrass, barnyardgrass, setaria, steppe, goosegrass, wild grass, cyperus rotundus, purslane, cocklebur, nightshade, bidens, trifolium Red Thistle, Fennel, Datura, Mustela Flower.

In the prior art, due to the long-term use of a single herbicide, the occurrence of Scabella, old crabgrass, goosegrass, cyperus rotundus, and iron thread grass in sugar cane fields and other farmlands has gradually increased, and drug resistance has gradually increased. The area rises as the main weed.

The present invention has the following beneficial effects:

In the present invention, two herbicides with different action mechanisms and herbicidal spectrums, sulfopazizazole and carboxamidosulfuron-methyl are mixed according to a certain ratio, showing a certain synergistic effect, increasing the target site of action, and expanding the herbicide Spectrum; sulfonepyrazole, carboxamidosulfuron-methyl and then used in combination with chlorpheniramine, the synergistic effect is more obvious, the herbicide composition prepared has a significantly improved herbicidal effect than a single agent, and can be well controlled Crabgrass, Barnyard, Setaria, Gooseweed, Wild Grass, Cyperaceae, Amaranthus, Polygonum, Xanthium, Solanum, Portulaca, Fennel, Datura, Red Thistle, Mustela Petal flowers, etc., especially effective control of the current gradual increase in drug resistance of iron thread grass, old crabgrass, goosegrass, red thistle, cyperus rotundus, bermudagrass, sorrel and other malignant weeds, and the herbicide composition It is safe for sugarcane and used for weeding in sugarcane fields. It has the characteristics of good weeding effect, low toxicity to humans and animals, and environmental friendliness, which meets the safety requirements of pesticide preparations.

The present invention adds additives of different components to the composition, so that the present invention has the advantages of high active component content, low environmental pollution, good wetting performance, and stable heat storage performance; because the herbicide composition has better herbicidal effects than The single dose has been significantly improved, greatly reducing the pesticide dosage.

detailed description

In order to make the objectives, technical solutions and advantages of the present invention more concise and clear, the present invention is described with the following specific embodiments, but the present invention is by no means limited to these examples. The following are only preferred embodiments of the present invention, which are only used to describe the present invention and should not be understood as limiting the scope of the present invention. It should be pointed out that all modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Example 1: 25% sulfone metazazazole·carboxamidosulfuron-methyl wettable powder

The raw material dosage of the herbicide composition of this embodiment is:

Sulfonepyrazole 20kg, carboxamidosulfuron-methyl 5kg, penetrant T12kg, styrylphenol 10kg, carboxymethyl starch sodium 10kg, starch 8kg, bentonite 35kg.

The preparation method of the herbicide composition of this embodiment is:

Add the above-mentioned materials together in a cone mixer and mix them evenly, and then pulverize by a jet mill. The crushed materials are mixed by a cone mixer. The fineness of the mixed materials is 98% and passes through a 600-mesh standard sieve. Wet powder.

Example 2: 50% sulfone metazazazole·carboxamidosulfuron-methyl water dispersible granules

The raw material dosage of the herbicide composition of this embodiment is:

Sulfonazole 40kg, carboxamidosulfuron 10kg, Tween 18kg, private 20-8kg, alkyl naphthalene sulfonic acid 7kg, lignin 5kg, polyvinylpyrrolidone 2kg, kaolin 10kg.

The preparation method of the herbicide composition of this embodiment is:

Add the above-mentioned materials together in a cone mixer and mix them evenly, and then pulverize by a jet mill. The pulverized materials are mixed by a cone mixer. The fineness of the mixed materials is 98% through a 600-mesh standard sieve and added to the kneader. Kneaded into plastic materials, and finally put this material into an extrusion granulator to extrude and granulate. After granulation, dry and sieved to obtain the corresponding weight percentage of chlorpyrifum·sulfonepyrazole·carboxamide. Suimesulfuron water dispersible granules.

Example 3: 36% sulfone metazazone·carboxamidosulfuron-methyl microemulsion

The raw material dosage of the herbicide composition of this embodiment is:

Sulfonepyrazole 30kg, carboxamidosulfuron-methyl 6kg, calcium dodecylbenzenesulfonate 8kg, methylpentanol 10kg, polyol fatty acid ester 6kg, silicone 5kg, toluene 5kg, N, N-di 20 kg of methyl formamide and 10 kg of water.

The preparation method of the herbicide composition of this embodiment is:

Add the above materials (except water) to the reactor mixer together, stir for 90 minutes, mix thoroughly, then slowly add water while stirring, and stir for another 30 minutes. After fully mixing, the microemulsion is obtained.

Example 4: 30% sulfone metazazazole·carboxamidosulfuron-methyl EC

The raw material dosage of the herbicide composition of this embodiment is:

Sulfonepyrazole 24kg, carboxamidosulfuron 6kg, sodium methylene dinaphthalenesulfonate 8kg, fatty acid polyethylene glycol ester 8kg, polyacrylamide 10kg, lecithin 6kg, polyoxypropylene glycerol ether 5kg, pyrrolidone 5kg , 28kg of glycerin.

The preparation method of the herbicide composition of this embodiment is:

Add the above materials to the reactor mixer, stir for 90 minutes, mix thoroughly, and slowly add water while stirring, and stir for another 30 minutes. After fully mixing, the emulsifiable concentrate is obtained.

Example 5: 60% sulfone metazazazole·carboxamidosulfuron-methyl suspension

The raw material dosage of the herbicide composition of this embodiment is:

Sulfonepyrazole 50kg, carboxamidosulfuron 10kg, sodium lauryl sulfate 8kg, epoxy propylene block copolymer 8kg, carboxymethyl cellulose 5kg, polydimethylsiloxane 3kg, propylene glycol 8kg, water 8kg.

The preparation method of the herbicide composition of this embodiment is:

Add the above materials to the reaction kettle mixer together, stir for 40min, mix well and sand for 2～3h with a sand mill, the pressure of the sand mill is ≤0.2MPa, the material flow rate during the grinding time is 350～400kg/h, and the material temperature ≤ At 40℃, the suspension concentrate can be obtained after passing the test.

Example 6: 50% chlorpheniramine·sulfonepyrazole·carboxamidosulfuron-methyl wettable powder

The raw material dosage of the herbicide composition of this embodiment is:

Ichlormethan 45kg, sulfone metazurazole 4kg, carboxamidosulfuron 1kg, alkyl aryl polyoxyethylene ether 8kg, sodium dodecylbenzene sulfonate 8kg, epichlorohydrin 5kg, ammonium sulfate 10kg, Light calcium carbonate 19kg.

The preparation method of the herbicide composition of this embodiment is:

Add the above-mentioned materials together in a cone mixer and mix them evenly, and then pulverize by a jet mill. The crushed materials are mixed by a cone mixer. The fineness of the mixed materials is 98% and passes through a 600-mesh standard sieve. Wet powder.

Example 7: 62% chlormethan·sulfonepyrazole·carboxamidosulfuron-methyl water dispersible granules

The raw material dosage of the herbicide composition of this embodiment is:

50kg of chlormethan, 10kg of sulfone metazurazole, 2kg of carboxamidosulfuron-methyl, 8kg of sodium dodecylbenzene sulfonate, 7kg of ammonium sulfate, 5kg of polychitosan, 4kg of polydimethylsiloxane, white carbon black 4kg, 10kg of light calcium carbonate.

The preparation method of the herbicide composition of this embodiment is:

Add the above-mentioned materials together in a cone mixer and mix them evenly, and then pulverize by a jet mill. The pulverized materials are mixed by a cone mixer. The fineness of the mixed materials is 98% through a 600-mesh standard sieve and added to the kneader. Kneaded into plastic materials, and finally put this material into an extrusion granulator to extrude and granulate. After granulation, dry and sieved to obtain the corresponding weight percentage of chlorpyrifum·sulfonepyrazole·carboxamide. Suimesulfuron water dispersible granules.

Example 8: 46% chlormethan·sulfonepyrazole·carboxamidosulfuron-methyl water dispersible granules

The raw material dosage of the herbicide composition of this embodiment is:

36kg of chlormethan, 8kg of metazachlor, 2kg of carboxamidosulfuron-methyl, 10kg of sodium lignosulfonate, 8kg of sodium carboxymethylcellulose, 7kg of soluble starch, 5kg of disodium hydrogen phosphate, 10kg of zinc dibutyltin laurate , Bentonite 14kg.

The preparation method of the herbicide composition of this embodiment is:

Add the above-mentioned materials together in a cone mixer and mix them evenly, and then pulverize by a jet mill. The pulverized materials are mixed by a cone mixer. The fineness of the mixed materials is 98% through a 600-mesh standard sieve and added to the kneader. Kneaded into plastic materials, and finally put this material into an extrusion granulator to extrude and granulate. After granulation, dry and sieved to obtain the corresponding weight percentage of chlorpyrifum·sulfonepyrazole·carboxamide. Suimesulfuron water dispersible granules.

Example 9: 56% chlormethan·sulfonepyrazole·carboxamidosulfuron-methyl dry suspended granules

The raw material dosage of the herbicide composition of this embodiment is:

Ichlormethamine 50kg, sulfone metazurazole 5kg, carboxamidosulfuron-methyl 1kg, sodium lignosulfonate 8kg, calcium alkyl naphthalene sulfonate 10kg, sodium sulfate 8kg, sodium carboxymethyl cellulose 5kg, polyvinyl alcohol 5kg , Butyl hydroxyanisole 8kg.

The preparation method of the herbicide composition of this embodiment is:

Add the above-mentioned materials and water to the batching tank together, stir evenly, and then coarsely pulverize with a high-speed shearing machine, then enter the two-stage sand mill for fine grinding, and then enter the pressure spray drying tower for drying, granulation, and spray drying The finished product from the bottom of the tower is a dry suspended granule.

Example 10: 33% chlormethan·sulfonepyrazole·carboxamidosulfuron-methyl suspension

The raw material dosage of the herbicide composition of this embodiment is:

30kg of chlormethan, 2kg of sulfonepyridin, 1kg of carboxamidosulfuron-methyl, 10kg of calcium dodecylbenzenesulfonate, 8kg of powder BX, 7kg of polyvinyl alcohol, 10kg of isopropanol, and 32kg of deionized water.

The preparation method of the herbicide composition of this embodiment is:

Add the above materials to the reaction kettle mixer together, stir for 40min, mix well and sand for 2～3h with a sand mill, the pressure of the sand mill is ≤0.2MPa, the material flow rate during the grinding time is 350～400kg/h, and the material temperature ≤ At 40℃, the suspension concentrate can be obtained after passing the test.

Example 11: 49% chlormethuron·sulfonepyrazole·carboxamidosulfuron-methyl oil suspension

The raw material dosage of the herbicide composition of this embodiment is:

42kg of chlormethan, 6kg of sulfonepyridin, 1kg of carboxamidosulfuron-methyl, 8kg of styrylphenyl polyoxyethylene ether, 7kg of propylene glycol, 5kg of sodium methylnaphthalene sulfonate, 2kg of butylated hydroxyanisole, organic bentonite 6kg, 23kg of corn oil.

The preparation method of the herbicide composition of this embodiment is:

Add the above materials (except organic bentonite) to the reactor mixer, stir for 2 hours, and then inject the materials into the sand mill for grinding. The fineness of the ground materials is 98% after passing 1-5um, and then the materials are discharged. The pre-dissolved organic bentonite is put into a high-speed shearing machine, and after shearing and emulsification, an oil suspension concentrate can be prepared.

Example 12: 54% chlormethan·sulfonepyrazole·carboxamidosulfuron-methyl EC

The raw material dosage of the herbicide composition of this embodiment is:

50kg of chlormethan, 3kg of sulfonepyrazole, 1kg of carboxamidosulfuron-methyl, 8kg of polyacrylamide, 12kg of sodium lauryl sulfate, 2kg of benzophenone, 6kg of sodium carboxymethyl starch, 18kg of xylene.

The preparation method of the herbicide composition of this embodiment is:

Add the above-mentioned materials into the reactor mixer, stir for 90 minutes, and mix thoroughly to homogenous liquid phase to obtain emulsifiable concentrate.

Example 13: 38% chlormethan·sulfonepyrazole·carboxamidosulfuron-methyl microemulsion

The raw material dosage of the herbicide composition of this embodiment is:

30kg of chlormethan, 6kg of sulfone metazurazole, 2kg of carboxamidosulfuron-methyl, 9kg of sodium triethanolamine phosphate with tristyrylphenol ethylene oxide, 8kg of phenethylphenol polyoxyethylene ether, dodecylbenzene Calcium sulfonate 10kg, glycerol 8kg, deionized water 27kg.

The preparation method of the herbicide composition of this embodiment is:

Add the above materials (except water) to the reactor mixer together, stir for 90 minutes, mix thoroughly, slowly add water while stirring, and stir for another 30 minutes. After fully mixing, the microemulsion is prepared.

Example 14: 68% chlorpheniramine·sulfonepyrazole·carboxamidosulfuron-methyl wettable powder

The raw material dosage of the herbicide composition of this embodiment is:

60kg of chlormethan, 5kg of sulfonepyrazole, 3kg of carboxamidosulfuron-methyl, 6kg of saponins powder, 8kg of sodium naphthalenesulfonate, 5kg of sodium benzoate, 13kg of bentonite.

The preparation method of the herbicide composition of this embodiment is:

Add the above-mentioned materials together in a cone mixer and mix them evenly, and then pulverize by a jet mill. The pulverized materials are then mixed by a cone mixer. The fineness of the mixed materials is 98% and passes through a 600-mesh standard sieve to obtain the corresponding Wettable powder of chlorpyrim, sulfonepyrazole, and sulfomesulfuron in weight percentage.

Example 15: Indoor Toxicity Determination of Sulfone Conazole and Carboxamidosulfuron to Trifolium repens, Crabgrass and Cyperus rotundus

Through indoor bioassays, the synergy of the combination of sulfonepyrazole and carboxamidosulfuron-methyl was clarified, and the synergistic effects of the combination of bidens pilosa (Bidens pilosa L.), crabgrass (Digitaria sanguinalis (L.) Scop.), Cyperus rotundus was used as the bioassay object, and the soil without herbicide was selected, the pH=6.8, the soil was air-dried, sieved, and put into a plastic flowerpot (with a tray) with a diameter of 32 cm and a depth of 20 cm. The stem and leaf spray method was used to refer to the NY/T 1155.4-2006 Pesticide Indoor Bioassay Test Guidelines for Herbicide Part 4: Activity Determination Test The stem and leaf spray method was used for the experiment. Each treatment was repeated 4 times, and each repeated 15 plants. The drug treatment is a blank control. The statistical analysis method of the data refers to NY/T 1155.7-2006 Pesticide Indoor Bioassay Test Guidelines for Herbicide Part 7: Gowing method in the determination of the combined effect of mixing, and calculate the theoretical survival rate E ₀ value and actual survival rate of each mixed combination. E value and the difference between theoretical value and actual value (EE ₀ ).

The theoretical weed survival rate E _{0 of the} mixture is calculated according to formula (1):

Where:

The fresh weight inhibition rate of X-sulfone metazole on target weeds when used alone at a certain dose

The fresh weight inhibition rate of Y-carboxamidosulfuron on target weeds when used alone at a certain dose

E ₀ —The theoretical value of the inhibition rate of the target weed fresh weight when sulfonazole and carboxamidosulfuron are mixed

E is the actual measured value of the control for the fresh weight inhibition rate of the target weed when sulfonepyrazole and carboxamidosulfuron are mixed.

There are three criteria for judging the effects of herbicides after mixing: EE ₀ > 10% is synergistic effect; EE ₀ <-10% is synergistic antagonism; EE ₀ value of ± 10% is synergistic additive effect.

Table 1 Indoor toxicity test results of sulfenoxazole and carboxamidosulfuron-methyl paired with Trifolium repens

According to the Gowing method to evaluate the combination of herbicides, the data in Table 1 show that the co-toxicity coefficients of sulfonepyrazole and carboxamidosulfuron-methyl are both ﹥-10%, and there is no antagonistic effect, indicating that sulfonepyrazole The compound herbicide of azole and carboxamidosulfuron-methyl is feasible. The dosages of sulfonepyrazole and carboxamidosulfuron are (40+10)gai/ha, (60+15)gai/ha, (80+20)gai/ha, (100+25)gai/ha When the E ₀ -E value is greater than 10%, it has a synergistic effect. The best dosage-mass ratio of sulfonepyrazole and carboxamidosulfuron-methyl is 4:1.

Table 2 Indoor toxicity test results of metazazazole and carboxamidosulfuron-methyl on crabgrass

According to the Gowing method to evaluate the combination of herbicides, the data in Table 2 show that the co-toxicity coefficients of metazazazole and carboxamidosulfuron-methyl paired with crabgrass are both ﹥-10%, and there is no antagonistic effect. The dosages of sulfonepyrazole and carboxamidosulfuron are (40+10)gai/ha, (60+15)gai/ha, (80+20)gai/ha, (100+25)gai/ha When the E ₀ -E value is greater than 10%, it has a synergistic effect. The best dosage-mass ratio of sulfonepyrazole and carboxamidosulfuron-methyl is 4:1.

Table 3 Indoor toxicity test results of Metazazol and Carboxamidosulfuron-methyl on Cyperus rotundus

According to the Gowing method to evaluate the combination of herbicides, the data in Table 2 shows that the co-toxicity coefficients of metazazazole and carboxamidosulfuron-methyl paired with crabgrass are both ﹥-10%, which has an additive synergistic effect. The dosages of sulfonepyrazole and carboxamidosulfuron are (40+10)gai/ha, (60+15)gai/ha, (80+20)gai/ha, (100+25)gai/ha When the E ₀ -E value is greater than 10%, it has a synergistic effect. The best dosage-mass ratio of sulfonepyrazole and carboxamidosulfuron-methyl is 4:1.

Example 16: Indoor toxicity determination of sulfonepyrazole, carboxamidosulfuron-methyl and chlorpheniramine on Trifolium repens, crabgrass, and Cyperus rotundus

Through indoor bioassays, the synergy of the combination of sulfonepyrazole, carboxamidosulfuron-methyl, and chlormethuron was clarified, and the synergistic effects of the combination of Bidens pilosa L. and Digitaria sanguinalis (L.) Scop.) and Cyperus rotundus are used as bioassay objects. The soil has not been applied with herbicides, pH=6.8. After the soil is air-dried and sieved, it is placed in a 32cm diameter and 20cm deep plastic flowerpot (with a tray) . The stem and leaf spray method was used, referring to the NY/T 1155.4-2006 Pesticide Indoor Bioassay Test Guidelines for Herbicide Part 4: Activity Determination Test The stem and leaf spray method was used for the experiment. Each treatment was repeated 4 times, and each repeated 15 plants. The drug treatment is a blank control. The statistical analysis method of the data refers to the NY/T 1155.7-2006 Pesticide Indoor Bioassay Test Guidelines for Herbicide Part 7: Colby method in the determination of the combined effect of mixing, and calculate the theoretical survival E ₀ value and actual survival rate of each mixed combination E value and the difference between theoretical value and actual value (E ₀ -E).

The theoretical weed survival rate E _{0 of the} mixture is calculated according to formula (2):

Where:

A—Inhibition rate of fresh weight of the target weeds when used alone with a certain dose of

B—The fresh weight inhibition rate of sulfonepyrazole on target weeds when used alone at a certain dose

C-carboxamidosulfuron-methyl on the fresh weight inhibition rate of target weeds when used alone at a certain dose

N—The fresh weight inhibition rate of weeds with herbicide N

n—the number of varieties of mixed herbicides

E ₀ -The theoretical value of the inhibition rate of the target weed fresh weight when the three medicaments of methamphetamine, sulfonepyrazole and carboxamidosulfuron-methyl are mixed

E is the actual measured value of the control of the fresh weight inhibition rate of the target weed when chlorpyrim, sulfonepyrazole, and carboxamidosulfuron-methyl are used together.

Three criteria for judging the effects of herbicides after mixing: E ₀ -E>10% is synergistic effect; E ₀ -E<-10% is synergistic antagonism; E ₀ -E value is between ±10% Synergistic effect.

Table 4 Indoor toxicity test results of trilobite bipyridin with chlorpheniramine, sulfonepyrazole and carboxamidosulfuron-methyl

The combination of herbicides was evaluated according to the Colby method. The data in Table 4 show that the co-toxicity coefficient of the ternary combination of chlorpheniramine, sulfonepyrazole, and carboxamidosulfuron-methyl on the trilobite bipyridin is all ﹥-10%, and there is no antagonistic effect. This shows that the compound herbicides of chlorpheniramine, sulfonepyrazole and carboxamidosulfuron are feasible. The E ₀ -E values are all greater than 20%, and the compound herbicide has obvious synergistic effects.

Table 5 Indoor toxicity test results of metazazazole, carboxamidosulfuron-methyl, and chlorpheniramine in combination with crabgrass

The combination method of herbicides was evaluated according to the Colby method. The data in Table 5 show that the E ₀ -E value of the ternary combination of methamur, sulfonepyrazole, and sulfenylsulfuron for crabgrass is greater than 20%, and the compound herbicide It has obvious synergistic effect.

Table 6 Indoor toxicity test results of sulfenazole, carboxamidosulfuron-methyl and chlorpheniramine compound in Cyperus rotundus

The combination of herbicides was evaluated according to the Colby method. The data in Table 6 show that the E ₀ -E value of the ternary combination of chlorpheniramine, sulfonepyrazole, and carboxamidosulfuron-methyl on Cyperus rotundus is greater than 20%. This compound herbicide It has obvious synergistic effect.

According to the results of Tables 1, 2, and 3, the best quality mixing ratio of metazazazole and carboxamidosulfuron-methyl is 4:1. The results of Tables 4, 5, and 6 show that at the dose of (500～900) g ai/ha, sulfamethoxazole at a dose of 60 g ai/ha, and carboxamidosulfuron at a dose of 15 g ai/ha, Mixed use shows obvious synergistic effect, E0-E﹥20. The optimal mixing ratio range is (500～900):60:15, namely (35～60):4:1.

Example 17: Application of invention examples in sugarcane fields

In May 2018, we conducted a field efficacy test for weeding in a sugarcane field in Fusui County, Chongzuo City, Guangxi. The test agents are the products prepared in Examples 2-10, and the control agents are 20% chlorpheniramine microemulsion, 60% sulfone metazoxazole water dispersible granules, and 3% formamidosulfuron-methyl oil suspension. Commercially available products; the concentration of the test agent is 700a.ig/hm ² , the concentration of 20% chlorpheniramine microemulsion is (2000～4000) aig/hm ² (according to the recommended dosage of the product), 60% sulfone metazoxazole The use concentration of water dispersible granules is (125～250) aig/hm ² (according to the recommended dosage of the product), and the use concentration of 3% formamidosulfuron-methyl oil suspension is (30～60) aig/hm ² (according to Product recommended dosage). The test method refers to GB/T 17980.49-2000 Pesticide Field Efficacy Test Guidelines (1) Herbicides to control weeds in sugarcane fields. The test results are shown in Table 7.

Table 7 The control effects of 14 invention examples on weeds in sugarcane fields

Note: Spraying on April 20, investigating the control effect of weeds on July 5, control effect (%)=(CK weed number-medicine weed number)/CK weed number×100%.

The field efficacy test results in Table 7 show that the field control effects (fresh weight control effects) of the herbicidal composition of methamuron, sulfonepyrazole, and carboxamidosulfuron-methyl all exceed 80%. Examples The treatment efficacy and herbicidal spectrum of the 6-14 compound preparations are better than those of the control agent: 20% chlorpheniramine microemulsion, 60% sulfone metazoxazole water dispersible granules, and 3% formamidosulfuron-methyl oil suspension ; Example 7 has the most obvious effect, with a total grass control effect of 95.8%. The herbicidal composition of each example is safe to sugarcane. In addition, the embodiment of the present invention has better economic benefits for weeding.

Claims (10)

1. A herbicide composition containing sulfonepyrazole and carboxamidosulfuron-methyl, characterized in that it comprises the following effective ingredients by weight: 1-80 parts of sulfonepyrazole and carboxamidosulfuron-methyl 1-50 parts Copies.
2. The herbicide composition according to claim 1, which is characterized in that it further comprises 5-90 parts of trimethoprim.
3. The herbicide composition according to claim 2, characterized in that it comprises the following active ingredients in parts by weight: 20-70 parts of chlormethan, 1-30 parts of sulfonepyrazole, and 1-15 parts of carboxamidosulfuron Copies.
4. The herbicide composition according to any one of claims 1 to 3, which is combined with a solvent and auxiliary materials to prepare a liquid formulation, characterized in that:

   The auxiliary materials are one or a mixture of two or more of emulsifiers, dispersants, thickeners, defoamers, antifreeze agents, pH regulators, stabilizers, and cosolvents.
5. The herbicide composition according to claim 4, wherein:

   The solvent is water, glycerin, dimethyl sulfoxide, ethanol, propylene glycol, polyethylene glycols, sesame oil, soybean oil, cottonseed oil, peanut oil, liquid paraffin, ethyl oleate, isopropyl myristate One or a mixture of two or more;

   The emulsifier is fatty acid soap, alkyl sulfonate, alkyl phenyl sulfate, phosphate, amine, quaternary ammonium salt, polyoxyethylene type, ethylene oxide and propylene oxide block copolymer, One or a mixture of two or more of fatty acid esters of polyhydric alcohols, polyvinyl alcohol, lecithin, lanolin, and gum arabic;

   The dispersant is water glass, sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate, triethylhexyl phosphoric acid, sodium lauryl sulfate, methylpentanol, cellulose derivatives, polyacrylamide, One or a mixture of two or more of Gur gum and fatty acid polyethylene glycol ester;

   The thickening agent is methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, silicon gel, starch, gelatin, sodium alginate, casein, guar gum , Chitosan, gum arabic, xanthan gum, soy protein gum, natural rubber, lanolin, agar, polyacrylamide butadiene rubber, styrene butadiene rubber, polyurethane, modified polyurea, one or a mixture of two or more ；

   The defoaming agent is soybean oil, corn oil, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropanolamine ether, polyoxypropylene glyceryl ether and polyoxypropylene polyoxyethylene glyceryl ether, polydimethyl One or a mixture of two or more siloxanes;

   The antifreeze agent is one or a mixture of two or more of calcium chloride, methanol, ethanol, ethylene glycol, propylene glycol, glycerol, lubricating oil, sugar, and honey;

   The pH adjusting agent is one or a mixture of two or more of glacial acetic acid, phosphoric acid, benzoic acid, citric acid, sodium dihydrogen phosphate, sodium hydroxide, and disodium hydrogen phosphate;

   The said stabilizer is one or a mixture of two or more of alkyl or aryl phosphate, phosphite, polyol, alkyl sulfonate and its substituted ammonium salt and substituted epoxy;

   The co-solvent is one or a mixture of more than two of cyclohexanone, pyrrolidone, dimethylformamide and acetonitrile.
6. The herbicide composition according to any one of claims 1 to 3, which is combined with auxiliary materials to form a solid preparation, characterized in that: the auxiliary materials are wetting agents, dispersing agents, stabilizers, anti-decomposing agents, and disintegrating agents , Binder, one or a mixture of two inert fillers.
7. The herbicide composition according to claim 6, wherein the preparation method of the solid preparation comprises the following steps:

   Mix the active ingredients and inert fillers, pulverize them into fine powder, add wetting agents, dispersants, stabilizers, anti-decomposition agents, and disintegrants, and mix them evenly to make a powder;

   Or on the basis of powder, add proper amount of binder to further prepare granule.
8. The herbicide composition according to claim 6, characterized in that:

   The wetting agent is sodium lauryl sulfate, sodium dodecyl benzene sulfonate, calcium dodecyl benzene sulfonate, polyoxyethylene alkyl phenyl ether, styryl phenol, formaldehyde resin, poly One or two of oxyethylene ether, alkylphenol-formaldehyde condensate, polyacrylate, pull open powder BX, penetrant T, private plate 20, tea cum powder, saponia powder, soapberry powder, Tween series A mix of more than one species;

   The dispersant is one or a mixture of two or more of lignin and its salts, cellulose derivatives, alginates, alkylnaphthalene sulfonates, and salts of formaldehyde condensates;

   The stabilizer is one or two of magnesium stearate, zinc laurate, dibutyltin laurate, di-n-butyltin dodecyl mercaptan, butyl hydroxyanisole, epichlorohydrin, and benzoate A mix of the above;

   The anti-decomposition agent is one or a mixture of two or more of zeolite, quicklime, magnesium oxide, salicylic acids, benzophenones, vitamin C, and antioxidants;

   The disintegrant is sodium tripolyphosphate, metal stearate, dry starch, sodium carboxymethyl starch, low-substituted cellulose, polyvinylpyrrolidone, sodium bicarbonate, citric acid, bentonite, and ammonium sulfate One or a mixture of two or more;

   The inert filler is kaolin, diatomaceous earth, talc, gypsum, montmorillonite, bentonite, attapulgite, dolomite, white carbon black, starch, light calcium carbonate, attapulgite, dolomite, white carbon One or a mixture of two or more of black, starch, and light calcium carbonate;

   The binder is one or a mixture of two or more of gelatin, rubber, polyvinyl acetal, polycarbonate, nylon and polyfeng.
9. The herbicide composition according to any one of claims 1-8 is used for the control of annual broadleaf weeds, gramineous weeds and Cyperaceae weeds in sugarcane fields.
10. The herbicide composition according to any one of claims 1-8 is used to control crabgrass, barnyardgrass, setaria, stephengrass, goosegrass, wild grass, cyperus rotundus, purslane, cocklebur, nightshade, Uses of trilobite bidens, red thistle, fennel, datura, and mustela flower.