CN102461555B - Mixed herbicide containing cinosulfuron, cyhalofop-butyl and molinate and application thereof - Google Patents
Mixed herbicide containing cinosulfuron, cyhalofop-butyl and molinate and application thereof Download PDFInfo
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- CN102461555B CN102461555B CN201010552181.0A CN201010552181A CN102461555B CN 102461555 B CN102461555 B CN 102461555B CN 201010552181 A CN201010552181 A CN 201010552181A CN 102461555 B CN102461555 B CN 102461555B
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Abstract
The invention belongs to the technical field of agricultural agents, relates to a herbicide, and particularly discloses a mixed herbicide containing cinosulfuron, cyhalofop-butyl and molinate and application thereof. The herbicide takes the cinosulfuron, the cyhalofop-butyl and the molinate as main active ingredients, and the mass ratio of the cinosulfuron, the cyhalofop-butyl and the molinate is 0.1-80/0.1-80/0.1-80. The mixed herbicide is applied to weeding paddy field, and particularly has the obvious effect on the application in preventing and weeding weeds of various grass families, sedge families and broad leaves of the paddy field. Compared with a single herbicide, under the premise of improving the efficacy, the mixed herbicide also has the advantages of weakened herbicide resistance, wide weeding scope and long efficacy duration, and is safe to paddy and succeeding crops.
Description
Technical field
The invention belongs to technical field of pesticide, relate to a kind of weed killer herbicide, be specifically related to mixed herbicide and the application thereof of a kind of cinosulfuron-containing, cyhalofop-butyl and molinate.
Background technology
China is the country with the longest history of rice cropping in the world, and paddy rice is one of China's staple food crop, and approximately 3,300 ten thousand hectares of cultivated areas, account for 29% of plant of grain crops area.
Not weeding of field it is reported that annual national paddy rice is all subject to crop smothering in various degree, if can make the paddy rice underproduction more than 50%.Weeds have paddy field main harm: barnyard grass, moleplant seed, reed, firefly Lin, Herba Cyperi Glomerati, difformed galingale herb, cyperus iria, miliary fimbristylis herb, pondweed, Eclipta prostrata, wild arrowhead, Monochoria vaginalis etc.The economic loss causing in order to reduce crop smothering, reduces labor intensity, and also because chemical weed control is convenient, quick-acting, the control time is long, chemical weed control is accepted by people gradually simultaneously.
In recent years, along with increasing and the extensive popularization of chemical control technology in agricultural production of weed killer herbicide kind, chemical weed control has been widely used in each period of paddy growth.Choose reasonable weed killer herbicide not only can reduce friend peasant labour intensity, shorten working time, but also can reduce, cultivate cost, reach the object of volume increase.
Cinosulfuron (Cinosulfuron), has another name called first cinosulfuron, a kind of sulfonylurea herbicide, formal name used at school 1-(4,6-dimethoxy-1,3,5-triazines-2-yl)-3-[2-(2-methoxy ethoxy) phenyl sulphonyl] urea, its structural formula is as follows:
Cinosulfuron mainly absorbs by root and stem, by conducting tissue, is sent to meristematic tissue, suppresses the biosynthesis of branched-chain amino acid (as serine, isoleucine).After medication, weeds can be not dead immediately, but stop growing, and after 5-10 days, plant starts yellow, withered death.In paddy rice body, active ingredient can rupture by urea bridge, after methoxyl group hydrolysis, deamination and phenyl ring hydrolysis and sucrose yoke the approach such as close, finally be metabolized to non-poisonous material, in rice root, the half life period is less than 1 day, and in paddy rice leaf, the half life period is 3 days, so to rice safety.But due to its water-soluble large (3.7g/L water), in water leaking paddy field, thereby may focus on rice root district with water, paddy rice is caused to poisoning.For dry sowing, water, broadcast annual broadleaf weed and the sedge weeds such as rice field control rhizoma alismatis, nutgrass flatsedge, pondweed, arrowhead, Monochoria vaginalis, invalid to barnyard grass and moleplant seed etc.
Cyhalofop-butyl (Cyhalofop-butyl), commodity are called a thousand pieces of gold, the phenoxy carboxylic acid herbicides of LG-DOW agricultural science company exploitation, chemical name: (R)-2-[4 (4-cyano group-2-fluorophenoxy) phenoxy group]-butyl propionate, its structural formula is as follows:
Cyhalofop-butyl is unique kind paddy rice to tight security in aryloxyphenoxypropanoates class weed killer herbicide, the same with such other kinds, is also inner-adsorption conduction-type herbicide.Cyhalofop-butyl is absorbed by leaf sheath and the blade of plant corpus, phloem conduction, accumulate the meristem zone in plant corpus, suppress acetyl-CoA carboxylase (ACCase), fatty acid is synthesized to be stopped, the growth division of cell can not normally be carried out, and film system etc. are destroyed containing membrane structure, finally causes plant dead.From cyhalofop-butyl, be absorbed into weeds Mortality Ratio slower, generally need 1-3 week.The symptom of weeds after dispenser is as follows: the tender shoots atrophy of four leaf phases, finally work hard lethal.The leaf rapidly of growing tri-leaf period stops growing after a couple of days, and the how many appearance of limb edge are sallow, cause death.The Lao Ye of two leaf stage changes minimum, keeps green.Cyhalofop-butyl can be degraded to rapidly the diacid state to acetyl-CoA carboxylase non-activity by paddy rice, thereby paddy rice is had to the safety of height.Because it degrades rapidly in soil and in typical paddy field water either, therefore to succession crop safety.Be mainly used in preventing and kill off grassy weed.Cyhalofop-butyl is not only efficient to various barnyard grasses (comprising above the average age for marriage barnyard grass), also can prevent and kill off moleplant seed, lady's-grass, Paspalum distichum, green foxtail, eleusine indica, amur foxtail etc.Invalid to sedge family and broad leaved weed.
Molinate (molinate), commodity are called molinate, are the dithiocarbamate herbicides by the exploitation of Syngenta (first just reaching) company, chemical name: N, N-hexa-methylene thioxanthamide, its structural formula is as follows:
Molinate belongs to lipoid synthetic inhibitor, is a kind of rice field herbicides special of inner sucting conduction type, the selective herbicide of control barnyard grass in paddy field.Molinate carries out the soil treatment cauline leaf of holding concurrently to be processed, impose on after Tanaka, because proportion is greater than water, and be deposited in the interface of water and mud, form the medicine layer of high concentration, weeds are during by medicine layer, can be rapidly by primary root, especially absorbed by bud scale, and be accumulated in the meristematic tissue of growing point, stop protein synthetic.Molinate can also suppress a-amylase activity, stops or weakening the hydrolysis of starch, and the synthetic and cell division degradedness of protein is supplied with, and the cell of being injured expands, and growing point distortion is died and dead.Seed rice through vernalization is sowed on medicine layer, and it is few that rice root is passed down through medicine layer absorption dose, and bud scale upwards growth does not pass through medicine layer, thereby can not be injured.Molinate is effective to the various environmental barnyard grass of control 1-4 leaf phase, and medication is also effective to needle spikesedge herb and cyperus iria during morning, but invalid to broadleaved herb, is applicable to take barnyard grass as main rice seedling bed, live field and rice transplanting field.Because molinate herbicide spectrum is narrow, use can make weeds in paddy field occur obviously to change continuously, notes rationally mixed with other weed killer herbicides.
Herbicide for paddy field is limit by crop safety at present, herbicide spectrum is also limited, use separately a kind of weed killer herbicide single dose can not control completely effectively the generation of paddy field weed, moreover some weed killer herbicide is due to water-soluble large or the field lasting period is oversize, consumption is excessive or dispenser is inhomogeneous all easily causes the residual hazard to this season crop or succession crop.
Summary of the invention
The mixed herbicide that the object of this invention is to provide a kind of cinosulfuron-containing, cyhalofop-butyl and molinate.
Another object of the present invention is to provide the application of this weed killer herbicide.
The mixed herbicide of a kind of cinosulfuron-containing, cyhalofop-butyl and molinate, described mixed herbicide be take cinosulfuron, cyhalofop-butyl and molinate as main active ingredient, the mass ratio of cinosulfuron, cyhalofop-butyl and molinate is 0.1～80: 0.1～80: 0.1～80, and preferably the mass ratio of cinosulfuron, cyhalofop-butyl and molinate is 1～70: 1～60: 1～60.
In described mixed herbicide, cinosulfuron, cyhalofop-butyl and molinate three's gross mass percentage composition is 1～85%, and preferred mass percentage composition is 15～80%.
In mixed herbicide of the present invention, except the active ingredients such as cinosulfuron, cyhalofop-butyl and molinate, can also add the auxiliary agents such as conventional surfactants, thickener, solvent or solid packing that allow on pesticidal preparations and be mixed with any one formulation allowing on agricultural chemicals, preferably be processed into aqueous emulsion, missible oil, water dispersion granule, wetting powder, suspending agent etc.
Mixed herbicide of the present invention can be applied in weeding before paddy field bud or after early stage bud, and particularly in preventing and kill off paddy field, in various grassy weeds (barnyard grass), sedge weed or broad leaved weed, application has remarkable result.
Herbicidal composition of the present invention has the following advantages:
1, activity of weeding is high.Herbicidal composition of the present invention can kill weeds by three kinds of different approaches, wherein three kinds of active ingredient pluses and minuses are complementary, three kinds of composite reagents not only can reduce the consumption of single dose greatly, according to specific, than row, be made into mixture use, can produce synergistic function, greatly improve the removing activity of weed killer herbicide.
2, herbicidal spectrum is wide, and the lasting period is long.Cinosulfuron and molinate are all broad spectrum weeding agent, after both mix, and action compensating, herbicidal spectrum is wider, and, because cinosulfuron is mainly effective to broad leaved weed and sedge weed, and can only spread pesticide-clay mixture or spraying; And cyhalofop-butyl, molinate have special efficacy to grassy weed barnyard grass, can also prevent and treat needle spikesedge herb and cyperus iria simultaneously.So weed killer herbicide of the present invention has the double action in leaf surface treatment and feud, extended the lasting period of medicament.
3, delay Weed Resistance.Because weeds easily produce resistance to sulfonylurea herbicide, and the molinate that contains carbamates in weed killer herbicide of the present invention, the cyhalofop-butyl of aryloxyphenoxypropanoates class, make medicament can effectively prevent the weeds except anti-sulfonylurea, in addition, reduce the pesticide resistance of weeds, extended the service life of medicament.
4, safe.Herbicidal composition of the present invention, is applied to agent for removing grass in paddy field, and it can prevent and kill off various grass family, sedge family and broad leaved weed in paddy field, is improving under the prerequisite of drug effect, and paddy rice and succession crop are all had to safety.
Embodiment
Embodiment 1
Cinosulfuron 1%, cyhalofop-butyl 1%, molinate 13%, alkylphenol polyoxyethylene 4%, calcium dodecyl benzene sulfonate 5%, dimethylbenzene 15%, water to 100%, is mixed with according to conventional formulation method the aqueous emulsion that active ingredient gross mass percentage composition is 15%.
Embodiment 2
Cinosulfuron 2%, cyhalofop-butyl 2%, molinate 21%, NNO (sodium methylene bis-naphthalene sulfonate) 9%, alkylphenol polyoxyethylene 5%, xanthans 1%, water to 100%, is mixed with according to conventional formulation method the suspending agent that active ingredient gross mass percentage composition is 25%.
Embodiment 3
Cinosulfuron 29%, cyhalofop-butyl 60%, molinate 1%, sodium lignin sulfonate 5%, neopelex 5%, ammonium sulfate 5%, diatomite supplies 100%, and according to conventional formulation method, to be mixed with active ingredient gross mass percentage composition be 80% dispersibles granula.
Embodiment 4
Cinosulfuron 3%, cyhalofop-butyl 10%, molinate 17%, NNO (sodium methylene bis-naphthalene sulfonate) 9%, sodium lignin sulfonate 5%, white carbon 9%, kaolin supplies 100%, according to conventional formulation method, is mixed with the wetting powder that active ingredient gross mass percentage composition is 30%.
Embodiment 5
Cinosulfuron 70%, cyhalofop-butyl 3%, molinate 2%, NNO (sodium methylene bis-naphthalene sulfonate) 6%, sodium lignin sulfonate 4%, white carbon 9%, kaolin supplies 100%, according to conventional formulation method, is mixed with the wetting powder that active ingredient gross mass percentage composition is 75%.
Embodiment 6
Cinosulfuron 2%, cyhalofop-butyl 3%, molinate 60%, calcium dodecyl benzene sulfonate 9%, alkylphenol polyoxyethylene 6%, dimethylbenzene to 100%, is mixed with according to conventional formulation method the missible oil that active ingredient gross mass percentage composition is 65%.
Embodiment 7
1), toxicity determination test
Utilize the preparation in embodiment 1～4, measure it to paddy field common weed co-toxicity coefficient.
Test method: the seed of quantitative weeds is seeded in respectively in the Disposable paper cup of 9cm, sows 10～15 seeds in every glass, cultivate in illumination box, until weeds 3～6 leaves during the phase, in the crawler type processing of doing to spray on composition spray.After processing, in greenhouse, continue cultivation, each processes the preventive effect to weeds routine observation, weighs the weeds fresh weight after each processing after 30d, by the method that the nineteen sixties such as Sun Yunpei propose, calculates its toxicity regression curve and co-toxicity coefficient.Co-toxicity coefficient is greater than 100, shows that two kinds of active principles have synergistic effect, and co-toxicity coefficient is less than 100, shows that two kinds of active principles have antagonism.Measurement result as shown in Table 1 and Table 2.
Table 1 toxicity measurement result
Table 2 molinate and the cyhalofop-butyl toxicity measurement result to barnyard grass
Co-toxicity coefficient after active principle is composite is all greater than 100, illustrates that the present invention has obvious synergistic effect.
2), field control effectiveness test
Reagent agent:
Ternary built weed killer herbicide in embodiment 1～4 4.
Contrast medicament:
20% cinosulfuron water dispersible granules (commercially available), 10% cyhalofop-butyl missible oil (commercially available), 90% molinate missible oil (commercially available).
For studying thing: paddy rice
Rice seedlings was 3～5 leaf phases, grew fine, and robust plant, without other damage by disease and insect.
Prevent and kill off object:
The paddy field advantage weeds such as rhizoma alismatis, cyperus iria, apple, pondweed, arrowhead, lady's-grass, green foxtail, barnyard grass, Ya Zhi grass.
Test method:
According to the area of experimental plot, accurately weigh good various medicaments, and be watered after dilution, utilize knapsack sprayer, carry out even spraying, the Fan spray head of sprinkler selection weed killer herbicide special use.During spraying, note liquid evenly to spray application in experimental plot the phenomenon of accomplishing there is no drain spray, spraying more.
After test, after medicine, 20d, 40d observe weeds death condition respectively, and the activity of weeding of more various medicaments, the results are shown in Table 3 and table 4.In addition, also to after medicine, in 1～15d, observe the condition of production of crop, to investigate medicament, whether crop be had to poisoning, the results are shown in Table 5.
Table 3 field control effectiveness test result (20d after medicine)
Table 4 field control effectiveness test result (40d after medicine)
From table 3 and table 4, can find out, the present invention has significant preventive effect to grassy weed, broad leaved weed and sedge weed, and synergy is remarkable, and the lasting period is long.
The security survey result of table 5 medicament to crop
Each is processed, and in community, the rice is doing well, has no any medicine spot, illustrates that various medicaments are to the equal safety of paddy rice.
Claims (12)
1. a mixed herbicide for cinosulfuron-containing, cyhalofop-butyl and molinate, is characterized in that this weed killer herbicide take cinosulfuron, cyhalofop-butyl and molinate as active ingredient, and prepares by the following method:
Cinosulfuron 1%, cyhalofop-butyl 1%, molinate 13%, alkylphenol polyoxyethylene 4%, calcium dodecyl benzene sulfonate 5%, dimethylbenzene 15%, water to 100%, is mixed with according to conventional formulation method the aqueous emulsion that active ingredient gross mass percentage composition is 15%.
2. a mixed herbicide for cinosulfuron-containing, cyhalofop-butyl and molinate, is characterized in that this weed killer herbicide take cinosulfuron, cyhalofop-butyl and molinate as active ingredient, and prepares by the following method:
Cinosulfuron 2%, cyhalofop-butyl 2%, molinate 21%, NNO 9%, alkylphenol polyoxyethylene 5%, xanthans 1%, water to 100%, is mixed with according to conventional formulation method the suspending agent that active ingredient gross mass percentage composition is 25%.
3. a mixed herbicide for cinosulfuron-containing, cyhalofop-butyl and molinate, is characterized in that this weed killer herbicide take cinosulfuron, cyhalofop-butyl and molinate as active ingredient, and prepares by the following method:
Cinosulfuron 29%, cyhalofop-butyl 60%, molinate 1%, sodium lignin sulfonate 5%, neopelex 5%, ammonium sulfate 5%, diatomite supplies 100%, and according to conventional formulation method, to be mixed with active ingredient gross mass percentage composition be 80% dispersibles granula.
4. a mixed herbicide for cinosulfuron-containing, cyhalofop-butyl and molinate, is characterized in that this weed killer herbicide take cinosulfuron, cyhalofop-butyl and molinate as active ingredient, and prepares by the following method:
Cinosulfuron 3%, cyhalofop-butyl 10%, molinate 17%, NNO 9%, sodium lignin sulfonate 5%, white carbon 9%, kaolin supplies 100%, according to conventional formulation method, is mixed with the wetting powder that active ingredient gross mass percentage composition is 30%.
5. mixed herbicide claimed in claim 1 application in weeding before paddy field bud or after early stage bud.
6. mixed herbicide claimed in claim 2 application in weeding before paddy field bud or after early stage bud.
7. mixed herbicide claimed in claim 3 application in weeding before paddy field bud or after early stage bud.
8. mixed herbicide claimed in claim 4 application in weeding before paddy field bud or after early stage bud.
9. mixed herbicide claimed in claim 1 application in various grassy weeds, sedge weed or broad leaved weed in preventing and kill off paddy field.
10. mixed herbicide claimed in claim 2 application in various grassy weeds, sedge weed or broad leaved weed in preventing and kill off paddy field.
The application in various grassy weeds, sedge weed or broad leaved weed in preventing and kill off paddy field of 11. mixed herbicides claimed in claim 3.
The application in various grassy weeds, sedge weed or broad leaved weed in preventing and kill off paddy field of 12. mixed herbicides claimed in claim 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010552181.0A CN102461555B (en) | 2010-11-19 | 2010-11-19 | Mixed herbicide containing cinosulfuron, cyhalofop-butyl and molinate and application thereof |
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| CN201010552181.0A CN102461555B (en) | 2010-11-19 | 2010-11-19 | Mixed herbicide containing cinosulfuron, cyhalofop-butyl and molinate and application thereof |
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| CN102461555A CN102461555A (en) | 2012-05-23 |
| CN102461555B true CN102461555B (en) | 2014-03-05 |
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Effective date of registration: 20180516 Address after: 211318 Dongfeng Road 8, Yalong Town, Gaochun, Nanjing, Jiangsu Co-patentee after: Nanjing Redsun Co., Ltd. Patentee after: Nanjing Huazhou Pharmaceutical Co., Ltd. Address before: 211318 Dongfeng Road 8, Yalong Town, Gaochun, Nanjing, Jiangsu Patentee before: Nanjing Huazhou Pharmaceutical Co., Ltd. |
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