80 results about "Leptochloa chinensis" patented technology

The invention discloses a herbicide composition containing flazasulfuron and use of the herbicide composition. The herbicide composition comprises the following components by weight percent: 1-30% of an active component A, 1-30% of an active component B, 1-5% of a dispersant, 1-5% of a wetting agent, 1-5% of an adhesive and the balance being filler or deionized water, wherein the active component A is flazasulfuron. The herbicide composition containing the flazasulfuron disclosed by the invention can be applied to effective prevention and removal of annual grasses and broad leaf weeds of direct-seeding rice fields and seedling slinging fields, such as barnyard grass, leptochloa chinensis, crab grass, paspalum distichum, false loosestrife, sheathed monochoria herbs, pondweeds and the like, so as to play a synergistic effect. The herbicide composition has a good weeding effect, not only is the control effect improved by use in a form of a composition, but also the use cost is reduced, and the utilization rate of effective ingredients is improved.

The invention relates to a herbicidal combination containing flumetsulam. The herbicidal combination is characterized in that: the active ingredients of the herbicidal combination are component A and component B; the component A is the flumetsulam; and the component B is chosen from one or more of the following compounds: acetochlor, butachlor, alachlor, propisochlor, metolachlor, s-metolachlor, propachlor, ethachlor, napropamide, diphenamide, ethaprochlor, dimethenamid, high-effective dimethenamid, flufenacet, metazachlor, allidochlor, pethoxamid, prynachlor and propyzamide. The herbicidal combination can effectively decrease the dosage of the active ingredients per mu, broaden the weed control spectrum of each single agent and effectively control annual or perennial gramineous, broadleaf and cyperaceous weeds in the fields of peanut, soybean, rape, cotton, wheat, potato and other crops, such as green bristlegrass, crabgrass, barnyard grass, Asian sprangletop, speedwell, cocklebur, night shade, redroot amaranth, goosefoot, Indian mallow, cleavers and datura.

The invention relates to the field of pesticide preparations and discloses a weeding composition, which is made of flucetosulfuron and metamifop in a weight ratio of 1:3-6. The weeding composition can be made into emulsifiable solution, wettable powder, water dispersible granules and the like with conventional auxiliaries and carriers / solvents by the existing methods. The weeding composition can be used for removing most of paddy field weeds, effect of controlling gramineous weeds such as barnyard grass and Leptochloa chinensis, and cyperaceae weeds such as Monochoria vaginalis and Cyperus difformis can be improved, consumption of effective ingredients is lowered, service cost is low, and the weeding composition has the advantages of long application period, long lasting period, safety to succeeding crop and the like.

The invention provides a weeding composition. Active components of the weeding composition consist of a component A and a component B, wherein the component A is halosulfuron-methyl and the component B is other herbicide; the weight ratio of the component A to the component B is 1:1 to 1:100. The invention also relates to the application of the weeding composition to prevention and control of the growth of undesired plants such as broadleaf weed, sedge weed or grassy weed, in particular to the application of the weeding composition to prevention and control of the growth of undesired plants such as echinolchloacrus-galli, leptochloa chinensis, yellow nut sedge, cyperus difformis L, Solanum nigrum L, abutilon, acalypha australis, Scirpus juncoides Roxb and Alisma L in cereal crops. The invention also provides a method for preventing and controlling the growth of the undesired plants. The method comprises the following steps: contacting the undesired plants or growth places thereof with the weeding composition with weeding effective quantity, or applying the weeding composition with weeding effective quantity to soil or water to prevent germination or growth of the undesired plant.

The invention provides an oil suspension type herbicide containing cyhalofop-butyl and penoxsulam, relating to the technical field of production of pesticides. The oil suspension type herbicide is composed of effective components including the cyhalofop-butyl and the penoxsulam, wherein the cyhalofop-butyl accounts for 8% of the total mass of the herbicide; the penoxsulam accounts for 2% of the total mass of the herbicide; and the oil suspension type herbicide also contains 8% of a dispersion wetting agent, 1% of an anti-freezing agent, 1% of a thickening agent, 2% of a de-foaming agent and 78% of a filler. The oil suspension type herbicide contains the effective components including the cyhalofop-butyl and the penoxsulam, and can be applied to prevention and removal of various weeds including direct seeding paddy field barnyard grass, leptochloa chinensis, nutgrass flatsedge, convexutricle sedge herb, wild water chestnuts, short sagittaria sagittifolia, alternanthera philoxeroides and paspalum distichum at the periphery of four ridges are good; the oil suspension type herbicide is safe to crops and has low cost and good prevention effect; and the herbicide composition has a stable chemical performance, is efficient and broad-spectrum, and has obvious broad-spectrum weeding and supplementary effect on prevention and removal objects.

The invention discloses bipolaris panici-miliacei (Yi.Nisik.) Shoemaker (SX-5-2) and a screening method and application thereof. The bipolaris panici-miliacei (Yi.Nisik.) Shoemaker (SX-5-2) has been preserved in the general microbiological center of Chinese microbial species preservation management committee, and the preservation number is CGMCC No.13887. The concentration of conidium which utilizes the bipolaris panici-miliacei (Yi.Nisik.) Shoemaker (SX-5-2) is more than 104 per milliliter, and the bipolaris panici-miliacei (Yi.Nisik.) Shoemaker (SX-5-2) is used for biological weeding, can be safely used in Oryza sativa L., Triticum aestivum L., sorghum bicolor (L.) Moench, Glycine max (Linn.) Merr., Gossypium spp and vegetable crop fields as well as Festuca elata Keng ex E. Alexeev and Zoysia japonica Sreud., and is used for controlling gramineous weeds such as Digitaria sanguinalis (L.) Scop, Eleusine indica (L.) Gaertn, Setaria viridis (L.) Beauv., Echinoochloa crusgalli (l.) Beauv., Leptochloa chinensis (L.) Nees, Microstegium vimineum (Trin.) A. Camus, Alopecurus aequalis Sobol. and Poa annua L., as well as microstegium related genera plant such as Eccoilopus cotulifer (Thunb.) A., Miscanthus sinensis anderss., Eulalia speciosa, Microstegium japonicum, Arthraxon hispidus (Thunb.) makino, Sorghym sudanense (Piper stapf). The controlling effect on target weeds can reach more than 80%. The bipolaris panici-miliacei (Yi.Nisik.) Shoemaker (SX-5-2) has the characteristics of safety and environmental protection.

The invention relates to a weeding combination containing anilofos and quinclorac or quinclorac salts and a preparation thereof. Particularly, the weeding combination is used for controlling and eliminating vicious weeds such as paddy field barnyard grass, moleplant seeds, paspalum distichum and crabgrass and has good control effects on the barnyard grass with the leaf age of over 5.5, the paspalum distichum, the moleplant seeds and the crabgrass and other annual weeds. The combination comprises, by weight, 1-70% of anilofos and 1-99% of one or more than one of quinclorac and the quinclorac salts. The weeding combination has the good control effects on the barnyard grass with the leaf age of over 5.5, the paspalum distichum, the moleplant seeds and the crabgrass and other annual weeds, the equipment investment is little, a process is easy to control, product quality is stable, the weeding combination can be produced continuously and is suitable for industrial production, and the yield is higher than 99%.

The invention discloses a disposable compound post-emergence herbicide for rice. The herbicide consists of active ingredients, namely cyhalofop-butyl and ipfencarbazone, wherein the weight ratio of cyhalofop-butyl to ipfencarbazone is 1:(1-5). According to the compound herbicide, annual gramineous weeds such as leptochloa chinensis and barnyard grass in a rice field can be prevented and controlled, cyperaceous weeds and part of broadleaf weeds can also be prevented and controlled, remarkable herbicidal effects are achieved, remarkable synergistic effects particularly on leptochloa chinensis and cyperaceous weeds are also achieved, influence on succession crops is eliminated, the using amount per mu is reduced, the agricultural cost is greatly reduced, and the herbicide is ideal.

The invention provides a weeding composition, which has active components including halosulfuron-methyl and metamifop, wherein the weight proportion of the halosulfuron-methyl to the metamifop is 100:1 to 1:100. The invention also relates to application of the weeding composition on preventing and controlling undesirable plant growth of broadleaf weeds, cyperaceae weeds or gramineous weeds, in particular to application of the weeding composition on preventing and controlling undesirable plant growth of Echinolchloacrus-galli (ECHCG), Leptochloa chinensis (LEFCH) and Cyperus difformis L. The invention also provides a method for preventing and controlling undesirable plant growth. The method comprises the step of enabling undesirable plants or growth places thereof to contact the weeding composition provided by the invention with weeding effective quantity, or applying the weeding composition provided by the invention with weeding effective quantity in soil or water to prevent the undesirable plants from sprouting or growing.

The invention discloses a mixed herbicide containing glyphosate and bispyribac-sodium, belonging to the technology field of pesticides. The herbicide takes glyphosate and bispyribac-sodium as main effective ingredients, wherein the mass ratio of glyphosate to bispyribac-sodium is (80-98):(0.1-10). The invention also discloses application of the mixed herbicide to post-emergence weeding in a paddy field. The mixed herbicide has wide weeding spectrum through mixture of weed killers, so as to improve the weeding effect; the mixed herbicide has the advantages of having quick effect, long lasting period, thorough weeding effect, low residue, low toxicity, safety, environment protection and the like and having capability of delaying pesticide resistance of the herbicide, and has prominent prevention and control effect on grassy weeds, broad leaf weeds, sedge weeds in the paddy field such as barnyard grass, leptochloa chinensis, difformed galingale herb, Eleocharis yokoscensis, Sagittaria pygmaea, Rotala indica and Marsilea quadrifolia, and therefore, the mixed herbicide is high-quality post-emergence chemical herbicide.

The invention belongs to the field of pesticides and particularly relates to ternary weeding composition containing triazole sulcotrione and anilofos and an application of the composition. The ternary weeding composition contains active components A, B and C with the effective weeding quantity, wherein the active component A is triazole sulcotrione, the active component B is anilofos, and the active component C is selected from one of quinclorac, propanil, bentazone, pyridate, cyclopyrimorate, simetryne, isoproturon, dymron, prometryn and amicarbazone. The composition can effectively solve the weed problems of crab grass, barnyard grass, Leptochloa chinensis, cyperus difformis, bareet grass and the like and has the characteristics that weed control spectrum is expanded, the application quantity is reduced, the composition is safe to crops, synergistic effect can be achieved, herbicide-resistant weeds are controlled and the like.

Provided is a herbicidal composition which contains fluoroglycofen-ethyl, glyphosate and haloxyfop-p-methyl. A mass ratio of effective components including the fluoroglycofen-ethyl, the glyphosate and the haloxyfop-p-methyl in the herbicidal composition is 1-50:0.1-20:0.1-20; a total mass of the effective components in the composition accounts for 1%-60% of a total mass of the composition; the rest components are permitted and acceptable auxilairy components in pesticide; and the formulation form of the herbicidal composition can be emulsifiable concentrate, suspension concentrate, wettable powder, water dispersible granules, aqueous emulsion, microemulsion, granules, microcapsules or water aqua. Main weeds in rice fields, such as barnyard grass, leptochloa chinensis, digitaria sanguinalis and goosegrass herbs, and winter wheat weeds such as amur foxtail, avena fatua, polypogon fugax, bluegrass, sclerochloa dura, puccinellia tenuiflora, Italian ryegrass, lolium temulentum, bromegrass, phleum paniculatum huds, aegilops tauschii, beckmannia syzigachne, wheatgrass, shepherd's purse, descurainia sophia and crickweed, can be prevented and removed effectively.

Provided is a herbicidal composition containing saflufenacil, glyphosate and fluazifop-p-butyl. A mass ratio of effective components including the saflufenacil, the glyphosate and the fluazifop-p-butyl in the herbicidal composition is 1-50:0.1-20:0.1-20; a total mass of the effective components in the composition accounts for 1%-60% of a total mass of the composition, and the rest components are permitted and acceptable auxilairy components in pesticide; and the formulation form of the herbicidal composition can be emulsifiable concentrate, suspension concentrate, wettable powder, water dispersible granules, aqueous emulsion, microemulsion, granules, microcapsules or water aqua. Main weeds in rice fields, such as barnyard grass, leptochloa chinensis, digitaria sanguinalis and goosegrass herbs, and winter wheat weeds such as amur foxtail, avena fatua, polypogon fugax, bluegrass, sclerochloa dura, puccinellia tenuiflora, Italian ryegrass, lolium temulentum, bromegrass, phleum paniculatum huds, aegilops tauschii, beckmannia syzigachne, wheatgrass, shepherd's purse, descurainia sophia and crickweed, can be prevented and removed effectively.

The invention relates to a preparation method of a phorbol ester compound Euphorbia Factor L2. A two-dimensional liquid chromatographic technology is adopted to extract Euphorbia Factor L2 from leptochloa chinensis, through reasonable selection of a chromatographic column, a dissolved solution, a mobile phase and the like, optimization of technical conditions such as the flow velocity, the elution mode, the collection section and the like and the orthogonality of the first dimension and the second dimension, complementary separation is realized, so that the whole separation and purification method is practicable, the operability is high, and the purity of the obtained Euphorbia Factor L2 is higher than 98% at most.

Traditional Chinese medicine for treating polyneuropathy comprises, by weight, 9-14 parts of oryzanol, 6-11 parts of clematis chinensis, 5-10 parts of white peony roots, 6-12 parts of ligusticum wallichii, 4-11 parts of scorpions, 5-10 parts of earthworms, 6-9 parts of asarum, 5-8 parts of claoxylon polot merr, 5-11 parts of sodaapple nightshade herbs, 6-12 parts of notopteryiginm forbesii boiss, 5-10 parts of radix glycyrrhizae, 5-10 parts of borneol, 6-11 parts of melodinus suaveolens, 5-12 parts of cynomorium, 5-10 parts of boxthorn roots, 6-11 parts of eucommia ulmoides, 5-10 parts of cortex magnoliae officinalis, 4-8 parts of moleplant seeds and 5-9 parts of solidago. The traditional Chinese medicine has a good effect on treating inflammatory demyelinating polyneuropathy.

The invention discloses a bipolaris yamadae (Y.Nisik.) shoemaker and a screening and identification method and application thereof. The bipolaris yamadae (Y.Nisik.) shoemaker (HXDC-1-2) has been deposited in the China General Microbiological Culture Collection Center with the accession number CGMCC No.17778. The bipolaris yamadae (Y.Nisik.) shoemaker is applied to biological weeding when the conidia concentration is 102 conidia / ml or more, can be safely applied to crop fields of rice, corn, soybeans, peanuts, sesame, millet, broad beans, peas, rape, vegetables, flowers, traditional Chinese medicinal materials and fruit trees, and is used for controlling gramineous weeds, such as barnyard grass, semen euphorbiae, herba digitariae, herba setariae viridis, eleusine indica, leptochloa panicea,wild oat, Aleppo grass and microstegium vimineum, annular nutgrass flatsedge and part of broad-leaf weeds; and the control effect can reach 80% or more. The bipolaris yamadae (Y.Nisik.) shoemaker, serving as a biological herbicide, has the advantages of being good in weeding effect, low in usage amount, high in safety to crops, low in cost, environment-friendly, free of a residue and free of pollution.

The invention provides a weeding composition. Active components of the weeding composition consist of halosulfuron-methyl and oxadiazon; the weight ratio of the halosulfuron-methyl to the oxadiazon is 1:1 to 1:100. The invention also relates to the application of the weeding composition to prevention and control of the growth of undesired plants such as broadleaf weed, sedge weed or grassy weed, in particular to the application of the weeding composition to prevention and control of the growth of undesired plants such as echinolchloacrus-galli (ECHCG), leptochloa chinensis (LEFCH) and cyperus difformis L in cereal crops. The invention also provides a method for preventing and controlling the growth of the undesired plants. The method comprises the following steps: contacting the undesired plants or growth places thereof with the weeding composition with weeding effective quantity, or applying the weeding composition with weeding effective quantity to soil or water to prevent germination or growth of the undesired plant. The composition provided by the invention can remarkably improve the weeding effect and effectively control weed, avoids toxicity on crops, and improves the compatibility with the crops.

The invention discloses an efficient rice fertilizer and a preparation process thereof, and belongs to the field of agricultural fertilizers. The efficient rice fertilizer is prepared from the following components: urea, potassium chloride, a selenium-enriched agent, an accelerant, animal waste, humic acid, leptochloa chinensis, selenium yeast, theasaponin, compound enzyme, an EM microbial agent and an amino acid chelate. The fertilizer preparation process comprises the following steps: putting urea, potassium chloride, an accelerant, animal waste, tea saponin and an amino acid chelate into astirrer, and stirring and mixing to obtain a mixture A; putting humic acid, euphorbia thymifolia, selenium yeast, compound enzyme and an EM microbial agent into a pulverizer, stirring, pulverizing, sieving, and standing to obtain a mixture B; and putting the mixture A and the mixture B into a fermentation tank, performing stirring and mixing, performing fermentation for 24-72h, adding a selenium-enriched agent, and performing uniform stirring so as to obtain the fertilizer. The fertilizer provided by the invention provides a large amount of selenium element for rice, can well promote the absorption of the rice to the selenium element, and improves the growth efficiency of the rice.

The invention discloses a bentazone-containing three-component herbicidal composition used for a rice direct sowing field. The herbicidal composition includes active ingredients, and the active ingredients refer to cyhalofop-butyl, bentazone and pyribenzoxim at a mass ratio of (1-20):(10-50):(1-10). The herbicidal composition used for the rice direct sowing field has a synergistic effect, and is mainly sprayed in the rice direct sowing field about 10 days after rice plants are transplanted so as to control barnyard grass, leptochloa chinensis and other gramineous weeds which grow vigorously in the rice direct sowing field and also control rotala indica, monochoria vaginalis, euphorbia helioscopia grass and other broadleaf weeds and eleocharis yokoscensis, difformed galingale herb and other cyperaceous weeds. The herbicidal composition has the advantages of being high in herbicidal activity, wide in herbicide controlling spectrum, convenient to use and safe to the rice plants.

The invention provides a missible oil type herbicide containing cyhalofop-butyl and penoxsulam, relates to the technical field of agricultural production, and particularly relates to a production method of a compound pesticide. The missible oil type herbicide containing the cyhalofop-butyl and the penoxsulam provided by the invention can be widely applied to prevention and removal of various weeds of rice direct seeding fields, and particularly has efficient and broad-spectrum weeding performances on various weeds including direct seeding paddy field barnyard grass, leptochloa chinensis, nutgrass flatsedge, convexutricle sedge herb, wild water chestnuts, short sagittaria sagittifolia, alternanthera philoxeroides and paspalum distichum at the periphery of four ridges; and the missible oil type herbicide has no bad influences on crops and the herbicide composite is different from existing other pesticide herbicides.

The invention provides a weeding composition. Active components of the weeding composition comprise halosulfuron-methyl and bentazone according to a weight ratio of 1:1 to 1:100. The invention also relates to a use of the weeding composition in the control of the growth of broadleaf weeds, cyperaceae weeds, grassy weeds and other unwanted plants, especially in the control of the growth of Echinolchloacrus-galli (ECHCG), Leptochloa chinensis (LEFCH), Cyperus difformis L and other unwanted plants. The invention also provides a method for controlling the growth of the unwanted plants. The method is characterized in that an effective weeding amount of the weeding composition is in contact with the unwanted plants or the growth place of the unwanted plants, or is applied to soil or water in order to prevent the germination or growth of the unwanted plants.

The invention relates to a preparation method of a Euphorbia factor L3. The Euphorbia Factor L3 is extracted from leptochloa chinensis by virtue of a two-dimensional liquid chromatographic technique; by virtue of the reasonable selection of a chromatographic column, a dissolved solution, a mobile phase and the like and the optimization of technical conditions such as the flow velocity, the elution mode and the collection section and the complementary separation through the orthogonality of the first dimension and the second dimension, the whole separation and purification method is practicable, the operability is high, and the purity of the obtained Euphorbia Factor L3 can reach up to 97% or more; the process of the whole process is stable, the operation is simple and convenient, and the separation efficiency is high.

The invention relates to a herbicidal combination for paddy fields. The active ingredients of the herbicidal combination are imazosulfuron and mefenacet, the weight ratio of which is 10:1 to 0.5:100; and adjuvant, solvent and carrier can be added into the active ingredients to prepare any agriculturally applicable dosage form. The mixed combination is highly safe for paddy rice, can effectively decrease the dosage of the active ingredients per mu, broaden the weed control spectrum of each single agent and effectively control barnyard grass, Asian sprangletop and annual and perennial broadleaf weeds, such as hairgrass, oldworld arrowhead, water plantain, pondweed, cress, common bulrush, glomerate galingale herb, marsh horsetail herb, difformed galingale, flat sedge, fice flat sedge and perennial sedge, and in particular, the herbicidal combination has special effect on oldworld arrowhead which is worst weed.

The invention relates to a complex herbicide for treating stems and leaves of rice, and belongs to the technical field of agricultural pesticides. The invention provides a complex herbicide for stems and leaves of a rice field, which not only can prevent and remove grassy weeds such as Leptochloa chinensis in the rice field and the like, but also can prevent and remove broadleaf weeds, and is safe to rice and has no influence on succeeding crops. The technical key point is that the complex herbicide comprises the following raw materials and auxiliary agents in part by weight: 5 to 8 parts of cyhalofop butyl, 1.6 to 2 parts of carfentrazone-ethyl, 5 to 15 parts of 8207 emulsifying agent, 0.5 part of xanthan gum, 0.5 part of sodium benzoate and 100 parts of water. The complex herbicide has obvious weeding effect, and is superior to two single agents; simultaneously, the complex herbicide is wide in weeding spectrum, can prevent and remove annual grassy weeds and broadleaf weeds, can prevent and remove the weeds in the whole growth period of the rice by once application, has no influence on the following crops, and is the ideal herbicide currently.

The invention discloses a traditional Chinese medicine essential oil for relieving fatigue. The traditional Chinese medicine essential oil is prepared from the following bulk drug substances in parts by mass: 9-16 parts of rhizoma gastrodiae, 5-10 parts of eriobotrya seguinii, 10-20 parts of pogostemon cablin, 8-16 parts of fructus psoraleae, 4-9 parts of raspberry, 9-16 parts of asarum sieboldii, 8-12 parts of dried ginger, 6-10 parts of leptochloa chinensis, 8-12 parts of parasitic loranthus, 9-16 parts of gardenia jasminoides, and an appropriate amount of each of melissa essential oil, spearmint essential oil, rosemary essential oil and sweet almond oil. According to the traditional Chinese medicine essential oil for relieving fatigue and the preparation method of the traditional Chinese medicine essential oil, the Chinese medicinal herbs and the natural extracting essential oils are adopted as the raw materials, so that toxic and stimulating substances are not contained, side effects on human bodies after long-term use are not caused, people are not addicted, and high safety and efficacy are achieved; besides, the contained essential oils do not generate other dangerous chemical substances after being mixed, therefore a fresh and cool fragrance is achieved, qi and blood flow freely and fatigue nerves of human bodies are fully activated through circulation of channels and collaterals.

Provided is an herbicide composition containing penoxsulam, 2-methyl-4-chlorophenoxy acetic acid and pyrazosulfuron-ethyl. The mass ratio of the effective components, namely the penoxsulam to the 2-methyl-4-chlorophenoxy acetic acid to the pyrazosulfuron-ethyl in the herbicide composition is (1-50):(0.1-20):(0.1-20), the total mass of the effective components in the preparation accounts for 1%-60% of the overall preparation mass, and the balance is auxiliary components allowable and acceptable in pesticides. The dosage forms of the herbicide composition are missible oil, a suspending agent, wettable powder, water dispersible granules, emulsion in water, a microemulsion, granules, microcapsules and water aqua. Main weeds in paddy fields, such as barnyard grass, leptochloa chinensis, angiospermae, eleusine indica and winter wheat weeds including alopecurus aequalis, wild oats, polypogon fugax, bluegrass, sclerochloa dura, puccinellia distans, lolium multiflorum, bearded darnel, bromegrass, phleum paniculatum, aegilops tauschii, beckmannia syzigachne, wheatgrass, shepherd's purse, descurainia sophia, chickweed and the like, can be effectively controlled.

The invention provides weeding composition containing clodinafop-propargyl, flucarbazone-sodium and florasulam, wherein the mass ratio of clodinafop-propargyl, flucarbazone-sodium and florasulam as effective components in the weeding composition is (1-50): (0.1-20): (0.1-20), the total mass of the effective ingredients in a preparation accounts for 1%-60% of the mass of the whole preparation, andthe balance is auxiliary components which are allowed to be used and accepted in pesticides. The weeding composition can effectively control main weeds in paddy fields, for example, barnyard grass, leptochloa chinensis, crabgrass, goosegrass as well as winter wheat weeds including alopecurus aequalis, wild oats, polypogon, bluegrass, sclerochloa kengiana, puccinellia, lolium multiflorum, lolium temulentum, bromegrass, phleum paniculatum huds, aegilops tauschii, beckmannia syzigachne, agropyron cristatum, capsella bursa-pastoris, descurainia sophia, malachium aquaticum and the like.

The invention belongs to the technical field of pesticide herbicides, and provides a herbicide composition containing cyhalofop-butyl and sulfentrazone, and the weight ratio of the cyhalofop-butyl to the sulfentrazone ranges from 1: 0.375 to 1: 24. The herbicide composition provided by the invention is used for preventing and removing annual weeds such as barnyard grass, leptochloa chinensis, Commelina bengalensis, abutilon and the like in paddy fields, and has a good synergistic effect or addition effect. According to the invention, the herbicide controlling spectrum is expanded, the control effect is enhanced, the fast-acting property and the persistence are effectively complemented, the rapid generation of weed resistance caused by using a single herbicide is avoided, the generation of weed drug resistance is delayed, the dosage is reduced, the use cost is reduced, and the environmental pollution is alleviated.

The invention discloses a paddy field weeding composition containing triafamone. The effective component of the weeding composition is prepared from a component A and a component B, the component A isthe triafamone, and the component B is benthiocarb or molinate; the mass ratio of the component A to the component B is (1 to 40) to (10 to 90). The weeding composition has a synergistic effect, is mainly used for annual weeds of paddy rice direct-seeding fields or transplanting fields, effectively prevents and weeds the annual cyperus rotundus including barnyard grass, paspalum distichum, scirpus planiculmis, fescue, cyperus difformis, leptochloa chinensis, digitaria sanguinalis, yard grass, green bristlegrass, cyperus iria, amaranthus lividus and alopecurus aequalis and the like and has theadvantages that the weeding activity is high, the weed control spectrum is wide, and use is convenient; moreover, the weeding composition is safe to paddy rice and is an environment-friendly weed killer.

The invention provides a weeding composition. Active components of the weeding composition consist of halosulfuron-methyl and mefenacet; the weight ratio of the halosulfuron-methyl to the mefenacet is 1:1 to 1:100. The invention also relates to the application of the weeding composition to prevention and control of the growth of undesired plants such as broadleaf weed, sedge weed or grassy weed, in particular to the application of the weeding composition to prevention and control of the growth of undesired plants such as echinolchloacrus-galli (ECHCG), leptochloa chinensis (LEFCH) and cyperus difformis L in cereal crops. The invention also provides a method for preventing and controlling the growth of the undesired plants. The method comprises the following steps: contacting the undesired plants or growth places thereof with the weeding composition with weeding effective quantity, or applying the weeding composition with weeding effective quantity to soil or water to prevent germination or growth of the undesired plant. The composition provided by the invention can remarkably improve the weeding effect and effectively control weed, avoids toxicity on crops, and improves the compatibility with the crops.