阅读说明：本技术 一种含氟酮磺草胺和精噁唑禾草灵的除草组合物及其应用 (Weeding composition containing triafamone and fenoxaprop-p-ethyl and application thereof ) 是由 张威 夏飞 朱植银 谢远芳 程凡贵 于 2019-09-12 设计创作，主要内容包括：本发明提供了一种含氟酮磺草胺和精噁唑禾草灵的除草组合物及其应用,属于农药技术领域。一种含氟酮磺草胺和精噁唑禾草灵的除草组合物,包含有效量的两种活性成分氟酮磺草胺和精噁唑禾草灵,还可以包含有效量的活性成分二甲四氯,其中,氟酮磺草胺、精噁唑禾草灵、二甲四氯三种活性成分的重量份数比为1∶(0.1-40)∶(0.1-100)。本发明提供的除草组合物对于防除杂草的协同增效效应非常显著,再扩大了除草谱的同时,还降低了农药使用量,减少了农药在农作物上的残留量,减轻了对环境的污染,极大地延缓了杂草抗药性的产生。(The invention provides a weeding composition containing triafamone and fenoxaprop-p-ethyl and application thereof, belonging to the technical field of pesticides. A weeding composition containing triafamone and fenoxaprop-p-ethyl comprises two active ingredients of triafamone and fenoxaprop-p-ethyl in effective amount and also can comprise active ingredients of methoxone in effective amount, wherein the weight part ratio of the triafamone, the fenoxaprop-p-ethyl and the methoxone is 1: 0.1-40: 0.1-100. The weeding composition provided by the invention has a very obvious synergistic effect on weed control, the weeding spectrum is expanded, the pesticide use amount is reduced, the residual quantity of the pesticide on crops is reduced, the environmental pollution is reduced, and the generation of drug resistance of weeds is greatly delayed.)

1. A weeding composition containing triafamone and fenoxaprop-p-ethyl is characterized by comprising active ingredients of triafamone and fenoxaprop-p-ethyl in effective amount.

2. The weeding composition according to claim 1, wherein the weight ratio of the active ingredients of the triafamone and the fenoxaprop-p-ethyl in the weeding composition is 1 to (0.1-40).

3. The weeding composition according to claim 1, wherein the weight ratio of the active ingredients of the triafamone and the fenoxaprop-p-ethyl in the weeding composition is 1: 1-20.

4. The weeding composition according to claim 1, wherein the ratio of the active ingredients, namely the triafamone and the fenoxaprop-p-ethyl, in parts by weight in the weeding composition is 1: (5-10).

5. The weeding composition according to claim 1, wherein the sum of the active ingredients, namely, triafamone and fenoxaprop-p-ethyl, in the weeding composition accounts for 1-90% of the total weight of the composition, and the balance is auxiliary ingredients allowed to be added in the pesticide preparation.

6. The herbicidal composition of claim 1, further comprising an effective amount of the active ingredient methoxone.

7. The weeding composition according to claim 1, wherein the weight ratio of the active ingredients of the triafamone, the fenoxaprop-p-ethyl and the methoxone is 1: 0.1-40: 0.1-100.

8. The weeding composition according to claim 7, wherein the sum of the active ingredients, namely the triafamone, the fenoxaprop-p-ethyl and the methoxone, in the weeding composition accounts for 5-80% of the total weight of the composition, and the balance is auxiliary ingredients which are allowed to be added in the pesticide preparation.

9. Use of a herbicidal composition comprising triafamone and fenoxaprop-p-ethyl for controlling annual weeds in paddy fields, wherein the herbicidal composition according to any of claims 1 to 8 is applied to the paddy fields.

Technical Field

The invention belongs to the technical field of pesticides, and particularly relates to a herbicidal composition containing triafamone and fenoxaprop-p-ethyl and application thereof.

Background

Rice is the main grain crop in China, and rice field weeding is one of the most main problems in rice production. Chemical weeding is the most economic and effective means in preventing and removing weeds in rice fields, and has the characteristics of low cost, high efficiency, simple and convenient operation, low labor intensity, obvious prevention and control effect and the like, but the problems of drug resistance and resistance evolution of weeds and the like can be caused by long-term continuous high-dose application of a single variety or a single action mode of chemical herbicide. In addition, the weed phase of the paddy field is complex, various weeds such as gramineous weeds, broadleaf weeds and cyperaceae are mixed, and a single variety of herbicide cannot completely solve the weeds in the paddy field and can show defects or limitations on one aspect. Hitherto, the reasonable compounding or mixing of different kinds of herbicides has the advantages of expanding the weed spectrum, improving the control effect, delaying the generation of drug resistance and resistance of weeds, and the like, and is one of the most effective methods for solving the problems.

The triafamone belongs to sulfonamide herbicides, is an acetolactate synthase inhibitor (ALS inhibitor), is mainly absorbed by roots and buds, and has the herbicidal activity of stem and leaf absorption. The dosage is 25-75 g/hm²The weeding composition is applied before or after the bud, can effectively prevent and kill gramineous weeds such as barnyard grass, paspalum distichum and the like, and has better inhibiting effect on cyperus and broadleaf weeds such as ludwigia prostrata, arrowhead, eclipta carinicana, eyedrops, bidens triphylla and cyperus rotundus.

fenoxaprop-P-ethyl belongs to heterocyclic oxy phenoxy propionic acid herbicides, and mainly inhibits the synthesis of fatty acid by inhibiting acetyl coenzyme A carboxylase which is a key enzyme for fatty acid synthesis. The pesticide is absorbed and transmitted to meristems and growth points of roots through stems and leaves, has quick action, stops growing 2-3 days after the pesticide is applied, leaves of hearts lose green and turn purple for 5-6 days, the meristems turn brown, and the leaves gradually die, and is mainly used for preventing and killing wild oats, alopecurus, green bristlegrass, oats, ryegrass, blue grass, barnyard grass, autogenous corns, crab grass, moleplant seeds and the like.

The methoxone (Chipton) belongs to phenoxy carboxylic acid selective hormone herbicide, has strong systemic conductivity, is mainly used for post-emergence stem and leaf treatment, the medicament passes through a cuticle and a cytoplasmic membrane and is finally transmitted to each part, different influences are generated on nucleic acid and protein synthesis at different parts, nucleic acid metabolism and protein synthesis are inhibited at the top of a plant, a growing point stops growing, young and tender leaves cannot stretch until photosynthesis cannot be normally carried out; the medicament is conducted to the lower part of the plant, so that the synthesis of nucleic acid and protein of the stem tissue of the plant is increased, the abnormal division of cells is promoted, the root tip is expanded, the capability of absorbing nutrients is lost, the stem is distorted and deformed, the sieve tube is blocked, the phloem is damaged, and the transportation of organic matters is blocked, so that the normal living capability of the plant is damaged, and finally the plant is dead. Methoxone is widely used in wheat fields, corn fields, rice fields, urban lawns, hemp crops to control annual or perennial broadleaf weeds and parts of sedges.

The reasonable compounding of the herbicide is an effective method for improving the control effect, delaying the succession speed of weed communities, reducing the resistance risk brought by the use of a single variety of herbicide, lightening the pollution to the environment, reducing the use cost and reducing the herbicide residue. At present, the herbicides applied to the paddy field mainly comprise quinclorac, bispyribac-sodium, penoxsulam, cyhalofop-butyl and other few varieties. However, the herbicides are used on rice for many years, the problem of resistance of weeds to penoxsulam, bispyribac-sodium and cyhalofop-butyl is prominent, and particularly, the current mainstream herbicides in direct-seeding rice fields have obvious resistance to barnyard grass. Therefore, a herbicide which is high in safety, broad in weed control spectrum and capable of solving the problem of weed resistance is urgently required.

The inventor compounds the triafamone and the fenoxaprop-p-ethyl and finds that the compounding of the triafamone and the fenoxaprop-p-ethyl has a synergistic effect on weed control, the weeding efficiency is greatly increased, the application dosage is obviously reduced, the safety is obviously improved, the environmental pollution is small, and the risk of generating resistance of weeds is low. At present, no report about the application of the compound of the triafamone and the fenoxaprop-p-ethyl for weed control exists, and in view of the above situation, the inventor applies for the application of the patent.

Disclosure of Invention

In view of the above situation, the invention provides a herbicidal composition containing triafamone and fenoxaprop-p-ethyl, which has excellent weed control effect after mixing effective amounts of triafamone and fenoxaprop-p-ethyl, has obvious synergy compared with single-agent control, and can delay the generation of weed resistance.

The technical scheme of the invention is as follows:

a weeding composition containing triafamone and fenoxaprop-p-ethyl comprises two active ingredients of triafamone and fenoxaprop-p-ethyl in effective dose.

Furthermore, in the weeding composition, the weight part ratio of the active ingredients of the triafamone and the fenoxaprop-p-ethyl is 1: 0.1-40; preferably, the weight part ratio of the active ingredients of the triafamone and the fenoxaprop-p-ethyl is 1: 1-20, more preferably 1: 5-10. When the triafamone and the fenoxaprop-p-ethyl exist in a specific weight ratio, the synergistic effect of preventing and killing weeds is very obvious.

Furthermore, in the weeding composition, the sum of the active ingredients, namely the triafamone and the fenoxaprop-p-ethyl, accounts for 1-90 percent of the total weight of the composition, and the balance is an auxiliary ingredient which is allowed to be added in a pesticide preparation; preferably, in the weeding composition, the sum of the active ingredients, namely the triafamone and the fenoxaprop-p-ethyl, accounts for 5-80% of the total weight of the composition, and the balance is auxiliary ingredients which are allowed to be added in the pesticide preparation, and more preferably 15-50%.

Furthermore, the weeding composition also comprises an effective amount of active ingredient tetrachlor, wherein the weight ratio of the triafamone, the fenoxaprop-p-ethyl and the tetrachlor is 1: 0.1-40: 0.1-100, preferably 1: 1-20: 0.1-60, and more preferably 1: 5-10: 0.1-40.

Furthermore, in the weeding composition, the sum of the weight of the triafamone, the fenoxaprop-p-ethyl and the methoxone is 1-90% of the total weight of the composition, preferably 5-80%, and more preferably 15-50%.

The invention also provides application of the weeding composition containing the triafamone and the fenoxaprop-p-ethyl, and the composition containing any one of the triafamone and the fenoxaprop-p-ethyl or the composition containing the triafamone, the fenoxaprop-p-ethyl and the methoxone is applied to the paddy field for preventing and killing the annual weeds.

Preferably, in the application of the weeding composition, the weeds comprise gramineous weeds, sedge weeds and broadleaf weeds; more preferably, the grassy weeds include barnyard grass, moleplant seed, large crabgrass, eleusine indica, green bristlegrass, lance asiabell root, paspalum distichum, teff grass, setaria farinosa, hispid arthrocephala, club moss, broomcorn millet and the like, the sedge weeds include cyperus rotundus, shortstalk sedge, sikkera angustifolia, juncellago decurrens, chufa, amur sedge, juncus glomerata, shallot, water flea hydropiper, green sedge, pterocarpus indicus, mangnolia planifolia, japanese iris, scirpus, water chestnut intermediate type, water chestnut and the like, and the leafy weeds include euglena, monochoria vaginalis, rhizoma alismatis, tulip, japanese ardisia japonica, water chestnut and the like.

Compared with the prior art, the weeding composition provided by the invention has the following beneficial effects:

(1) compared with each single agent, the weeding composition provided by the invention has obvious synergistic effect on preventing and removing weeds in a paddy field, can reduce the dosage of each single agent used alone, improves the quick action and reduces the dosage cost.

(2) The weeding composition provided by the invention consists of active ingredients with different action mechanisms, and can effectively delay the generation of weed resistance.

(3) Compared with each single agent, the weeding composition provided by the invention not only improves the control effect, but also expands the control spectrum, and simultaneously can reduce the times of medication and reduce the environmental stress;

(4) the weeding composition provided by the invention can obviously improve the tolerance of crops, so that the safety of the herbicide to the crops is higher;

(5) the weeding composition provided by the invention is low in cost, convenient to use, time-saving and labor-saving, and has great economic and social benefits when popularized and applied;

(6) the weeding composition provided by the invention has excellent control effect on malignant weeds and resistant weeds, particularly resistant barnyard grass and moleplant seed, which generate resistance in the long-term application process of the existing medicament.

The herbicide is prepared by mixing the active ingredients of the triafamone and the fenoxaprop-p-ethyl, can effectively enhance the weeding effect, reduces the using amount of a single-dose ingredient, leads the field application concentration of a single-dose ingredient to be obviously reduced, greatly reduces the generation of resistance and the risk of harm to crops caused by excessive use of the herbicide, has a very important significance for delaying the generation of resistance of weeds, is mixed with the methoxone, further enhances the effect, expands the control spectrum, widely kills various weeds including gramineae, cyperaceae and broadleaf weeds, achieves the effect of controlling various annual weeds in paddy fields by one-time application, saves labor and time and lightens the burden of farmers.

When the active ingredient in the herbicidal composition provided by the present invention and other auxiliary ingredients are formulated into a conventional pesticide formulation for agricultural use, the auxiliary agent includes one or more of a wetting agent, a dispersing agent, an emulsifier, a co-surfactant, a thickener, a solvent, a co-solvent, an anti-freezing agent, a disintegrating agent, a preservative, a stabilizer, a film-forming agent, a sachet-forming agent, a pH adjusting agent, an antifoaming agent, a coloring agent, a filler, water, and the like, and the auxiliary agent is a variety of ingredients which are commonly used in the preparation or are agriculturally acceptable, and is not particularly limited, and the specific ingredients and the amounts thereof are determined by experiments as needed.

Specifically, the wetting agent in the weeding composition is selected from one or more of EO/PO block polyether, fatty alcohol polyoxyethylene ether, fatty alcohol ethoxy compound, tallow ethoxy ammonium salt, alkyl naphthalene sulfonate, fatty alcohol polyoxyethylene ether sulfate and acyl glutamate.

Specifically, the dispersing agent in the weeding composition is selected from one or more of condensed naphthalene sulfonate, sodium phenolsulfonic acid condensate, sodium methyl naphthalene sulfonate formaldehyde condensate, sodium lignin sulfonate, sodium methylene dinaphthalene sulfonate, sodium acrylic acid homopolymer, high-molecular polycarboxylate, dioctyl sulfosuccinate, EO/PO block polyether and sodium salt of maleic acid-acrylic acid copolymer.

Specifically, the emulsifier in the herbicidal composition is selected from alkylphenol ethoxylates, benzyl phenol polyoxyethylene ether, phenethylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, phenethylphenol polyoxyethylene ether polyoxypropylene ether, fatty amine polyoxyethylene ether, castor oil ethylene oxide adduct and derivatives thereof, polyol fatty acid ester and ethylene oxide adduct thereof, alkylbenzene sulfonate, alkyl succinate sulfonate, alkyl biphenyl ether sulfonate, naphthalene sulfonic acid formaldehyde condensate, fatty alcohol sulfate, alkylphenol polyoxyethylene ether sulfate, aralkyl phenol polyoxyethylene ether sulfate, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, fatty acid polyoxyethylene ester phosphate, alkylamine polyoxyethylene ether phosphate, alkyl phosphate, alkylphenol polyoxyethylene ether formaldehyde condensate, aralkyl phenol polyoxyethylene ether formaldehyde condensate, benzyl phenol polyoxyethylene ether, polyoxyethylene alkyl benzene sulfonate, polyoxyethylene ether sulfonate, polyoxyethylene alkyl benzene sulfonate, polyoxyethylene ether sulfate, polyoxyethylene alkyl sulfonate, alkyl benzene sulfonate formaldehyde, One or more of a diphenol polyoxyethylene ether formaldehyde condensate, a polyoxyethylene polyoxypropylene block copolymer, an alkyl naphthalene sulfonic acid formaldehyde condensate, a phenol formaldehyde condensate sulfonate, an alkyl phenol polyoxyethylene ether formaldehyde condensate sulfate, a methyl cellulose and a derivative thereof, an alkyl ammonium salt, an amino alcohol fatty acid derivative, a polyamine fatty acid derivative, a quaternary ammonium salt, a tallow ethoxy ammonium salt, an alkyl naphthalene sulfonate, an amino acid, an amine oxide, a betaine, a fatty alcohol polyoxyethylene ether sulfate and an acyl glutamate.

Specifically, the cosurfactant in the weeding composition is selected from one or more of n-butyl alcohol, isobutyl alcohol and n-octyl alcohol.

Specifically, the thickening agent in the weeding composition is selected from one or more of xanthan gum, magnesium aluminum silicate, sodium carboxymethyl cellulose, sodium starch phosphate, sodium starch octenyl succinate and polyvinyl alcohol.

Specifically, the solvent in the herbicidal composition is selected from one or more of xylene, rosin-based vegetable oil, methyl oleate and heavy aromatic solvent oil.

Specifically, the cosolvent in the herbicidal composition is selected from one or more of cyclohexanone, N-dimethylacetamide and N, N-dimethylformamide.

Specifically, the antifreezing agent in the herbicidal composition is selected from one or more of ethylene glycol, propylene glycol, glycerol, isopropanol and urea.

Specifically, the film forming agent in the weeding composition is one or more of polyvinyl alcohol, polyvinyl acetate, polyethylene glycol methacrylate, carboxymethyl cellulose, gum arabic, xanthan gum, starch and other high molecular polymers with adhesive property and film forming property.

Specifically, the wall material of the capsule forming agent in the weeding composition is polyurea resin which is prepared by the interfacial polymerization reaction of isocyanate monomer and polyol or polyamine, wherein the isocyanate comprises toluene diisocyanate, 4-diphenylmethane diisocyanate, polyphenyl polymethylene polyisocyanate and polyphenyl polymethylene polyisocyanate.

Specifically, the pH acid-base regulator of the weeding composition is selected from one or more of citric acid, glacial acetic acid, hydrochloric acid, ammonia water, triethylamine, triethanolamine and diethylenetriamine; the amount is preferably such that the pH of the final product is adjusted to within a stable range.

Specifically, the disintegrant in the herbicidal composition is selected from one or more of sodium chloride, ammonium sulfate, sodium sulfate, and soluble starch.

Specifically, the preservative in the weeding composition is selected from one or more of cason, formaldehyde, phenyl salicylate, sodium benzoate, butyl p-hydroxybenzoate and potassium sorbate.

Specifically, the stabilizer in the herbicidal composition is selected from one or more of epoxidized soybean oil, epichlorohydrin, triphenyl phosphite, glycidyl ether or pentaerythritol.

Specifically, the defoaming agent in the weeding composition is selected from one or more of silicone defoaming agent and polyether defoaming agent.

Specifically, the colorant in the herbicidal composition is selected from one or more of iron oxide, titanium oxide, and azo dyes.

Specifically, the filler in the weeding composition is selected from one or more of kaolin, diatomite, talcum powder, light calcium carbonate and white carbon black.

Specifically, the water in the herbicidal composition comprises tap water, deionized water or distilled water.

The weeding composition provided by the invention can be prepared into any agriculturally allowable dosage form by adopting a known technology according to actual needs, and the dosage forms comprise wettable powder, dry suspending agent, powder, granules, water dispersible granules, suspending agent, suspoemulsion, microcapsule suspending agent, microemulsion, emulsion in water, oil suspending agent, missible oil, effervescent tablets and the like.

The composition of the invention can be provided in the form of a finished preparation, namely, all the substances in the composition are mixed and directly diluted to the required concentration when in use; the ingredients of the composition may also be provided in a single dose, directly mixed in a tub and tank in metered amounts before use, and then diluted to the desired concentration.

Detailed Description

In order to make the objects and advantages of the invention more concise, the invention will be described in more detail with reference to the following examples, to which it is in no way limited. The following examples are merely preferred examples of the present invention and are intended to illustrate the present invention and should not be construed as limiting the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Unless otherwise indicated, each component used herein is either commercially available or well known in the art or readily available to the skilled artisan from the disclosure of the prior art.

Formulations and preparation examples