CN104920447A - Rice field weeding composition, weed killer and application thereof - Google Patents
Rice field weeding composition, weed killer and application thereof Download PDFInfo
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Abstract
The invention provides weeding composition. The weeding composition is composed of anilofos, propanil and cyhalofop-butyl, and in addition, the weight ration of the anilofos, the propanil and the cyhalofop-butyl is 0.5-20:5-58:0.5-19. The invention further provides a weed killer, and the weed killer is obtained by preparing the weeding composition and common adjuvant into dosage forms including emulsion in water, microemulsion, missible oil, suspending agents, suspoemulsion, water aqua and the like according to known methods. The weeding composition is composed of the anilofos, the propanil and the cyhalofop-butyl, the weeding spectrum is enlarged, meanwhile, most weeds in rice fields can be prevented and killed off, the prevention effect on barnyard grass, annual nutgrass flatsedge and various broad leaf grass is strengthened, and meanwhile the advantages that the use age is wide, the weeding composition is safe for later crops, the lasting period is long, and the weeding composition is safe for the environment are achieved.
Description
Technical field
The invention belongs to technical field of pesticide, relate to a kind of be applicable to paddy field Herbicidal combinations, weed killer herbicide and application thereof.
Background technology
Paddy rice is not only the main cereal crops of China, one of Ye Shi world staple food crop.Nearly half population, comprises the population in almost whole East Asia and Southeast Asia in the world, is all food with rice.Produce throughout each continent except the South Pole.Eighties of last century late period, View of World Rice annual production average out to about 4,000 hundred million kilograms, cultivated area about 1.45 hundred million hectares.China's rice growing face accounts for 1/4 of national cereal crops, and every year about more than 3,500 ten thousand hectares, output then accounts for over half.No matter cultivated area and output, all ranks first in China cereal crops.The rice field of all rice workspaces of China, always has a large amount of weeds to occur.Medium crop smothering area accounts for more than 46% of total cultivated area, and wherein serious injured area is more than 11.5%, loses more than 200 hundred million kilograms, grain every year thus.Therefore, the usage ratio of domestic water herbicides for use in paddy almost reaches 100%, and its dosage is very large.
Along with the development of agricultural cience and farming techniques, chemical herbicide apply as saving of labor, save time, one of cost-effective strong well stimulation.The usage ratio of domestic water paddy chemical weeding agent almost reaches 100%, and its dosage is very large.At present, rice herbicide kind is more, but mostly there is various problem.Compose narrow as weed killer herbicide single dose exists herbicide, easily produce resistance, the problem that the lasting period is short; It is narrow then to there is the use age in binary Herbicidal combinations, to the uneasy congruence of succession crop.
Summary of the invention
In view of this, the present invention necessaryly provides that a kind of consumption is few, effective, broad weed-killing spectrum, the longevity of residure are long, to the Herbicidal combinations of crop safety and weed killer herbicide.
For realizing object of the present invention, the invention provides a kind of Herbicidal combinations, being made up of anilofos, Stam F-34 and cyhalofop-butyl, and the weight ratio of described anilofos, Stam F-34 and cyhalofop-butyl is 0.5 ~ 20: 5 ~ 58: 0.5 ~ 19.
Based on above-mentioned, the weight ratio of described anilofos, Stam F-34 and cyhalofop-butyl is 5 ~ 20: 25 ~ 55: 2 ~ 12.
Anilofos, English name anilofos, structural formula is shown in formula I.Anilofos is Uptake and translocation selective herbicide.Medicament absorbs mainly through stem in the young shoot of plant and ground, T suppression cell division with extend.The weeds effect aligning sprouting is best; Poor to the weeds effect of having grown up.After weeds are injured, growth stops, and blade is dark green, sometimes decolours, and blade shortens and thick, and very easily fracture, lobus cardiacus is not easily extracted out, and last whole strain is withered.Anilofos can use at transplanted rice field, prevents and kill off barnyard grass, moleplant seed, annual nutgrass flatsedge, fescue etc. before tri-leaf period, but invalid to flat bar deer grass.To rice safety.About the 30 days lasting period of medicament.Anilofos also may be used for cotton, soybean, rape field weeding, and the weeds that can prevent and kill off have barnyard grass, lady's-grass, green foxtail, eleusine indica, wild oat, difformed galingale herb, cyperus iria etc.; But it is to broad leaved weed weak effect.
Formula I
Stam F-34, English name propanil, structural formula is shown in formula II.Stam F-34 is high selectivity contact killing type weed killer herbicide, is hydrolyzed into 3,4-DCA and propionic acid and detoxifies in paddy rice body by aryl carboxy group amidase, barnyard grass is owing to lacking this kind of removing toxic substances function, cell membrane is destroyed at first, causes water metabolism to be lacked of proper care, and very fast dehydration is withered.The most responsive with 2 leaf phase barnyard grasses, decomposition failure after Stam F-34 chance soil, only should make cauline leaf inorganic agent.
Formula II
Cyhalofop-butyl, English name cyhalofop-butyl, structural formula is shown in formula III.Cyhalofop-butyl, be the aryloxy carboxylic acid weed killer herbicide of LG-DOW agricultural science company exploitation, be unique kind paddy rice to tight security in fragrant phenoxy phenoxy propionic acid weed killer herbicide, there is Uptake and translocation, by blade and the leaf sheath absorption of plant corpus, phloem conducts, and accumulates the meristem zone in plant corpus, suppresses acetyl-CoA carboxylase, fatty acid is synthesized stop, the division of cell can not normally be carried out, and membranous system etc. are destroyed containing ester structure, finally cause Plant death.In paddy rice body, cyhalofop-butyl by two acid-state degraded rapidly to acetyl-CoA carboxylase non-activity, can have the safety of height to paddy rice, in soil and in typical paddy field water either, degraded rapidly.Be mainly used in preventing and treating grassy weed, not only efficient to barnyard grass, also can prevent and treat the weeds such as moleplant seed, lady's-grass.
Formula III
After different herbicidal activity component mixing, each active component is due to the difference of composition, structure, physicochemical property, makes the synergy between each active component be typically expressed as synergistic effect, summation action or antagonism.So-called synergistic effect is exactly the mutual synergism between different material, and its effect produced is greater than the sum total of each composition effect; And summation action is exactly the sum total that its effect produced equals each composition effect; When antagonism refers to that two kinds of materials act on living organism, a kind of material disturbs the effect of another kind of material, or the effect of interfering with an opponent each other, makes the phenomenon that general effect declines.
The present invention evaluates three kinds of mixed interactions of different activities component of the present invention with reference to Sun Yunpei (Sun Y-P) method, wherein, co-toxicity coefficient is obviously greater than 120 for synergistic effect, and co-toxicity coefficient is significantly less than 80 for antagonism, and co-toxicity coefficient is 80 ~ 120 is summation action.The present invention by calculate anilofos, Stam F-34 mixed with cyhalofop-butyl after co-toxicity coefficient, evaluate the mixed rear effect of three, result shows, the weight ratio of described anilofos, Stam F-34 and cyhalofop-butyl be 0.5 ~ 20: 5 ~ 58: 0.5 ~ 19 co-toxicity coefficient be all greater than 120.Found by the test of outdoor biological activity determination, the ratio that described anilofos, Stam F-34 and cyhalofop-butyl are 0.5 ~ 20: 5 ~ 58: 0.5 ~ 19 with weight ratio used in combinationly has notable synergistic effect.
Above-mentioned Herbicidal combinations is former medicine and the active component of agricultural chemicals, generally directly can not use, must process and be mixed with various types of preparation, could use.For the ease of using, Herbicidal composition for rice field of the present invention, can pass through to add standard adjuvant, as auxiliary agent and excipient make aqueous emulsion, microemulsion, missible oil, suspending agent, suspension emulsion, aqua.
Therefore, the present invention also provides a kind of weed killer herbicide, and it is made up of Herbicidal combinations of the present invention and standard adjuvant.
Based on above-mentioned, the percentage by weight that described Herbicidal combinations accounts for described weed killer herbicide is 6% ~ 90%.
Based on above-mentioned, described weed killer herbicide is aqueous emulsion, microemulsion, missible oil, suspending agent, suspension emulsion, aqua.
Based on above-mentioned, described weed killer herbicide is aqueous emulsion, in described weed killer herbicide, by weight calculating, described Herbicidal combinations accounts for 6% ~ 90%, main solvent accounts for 3% ~ 25%, cosolvent accounts for 1% ~ 10%, emulsifier accounts for 1% ~ 5%, wetting agent accounts for 1% ~ 5%, dispersant accounts for 1% ~ 5%, stabilizing agent accounts for 0.1% ~ 1%, antifreezing agent accounts for 1% ~ 5%, thickener accounts for 0.1% ~ 0.5%, all the other are deionized water.Wherein, described main solvent is the one of cyclohexanone, dimethylbenzene, ethanol, DMSO, methyl oleate, 2-butyl acetate; Described cosolvent is selected from alcohols, such as propyl alcohol, isopropyl alcohol and n-butanol, preferred n-butanol; Described emulsifier be agriculture breast 500, agriculture breast 600, Nongru-700, NP series, 0201B, 0203B, 2201, peaceful No. 31, breast, peaceful No. 33, breast, peaceful No. 37, breast, 0202,0202C, polyoxyethylene nonyl phenyl alkene ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy ether, polyoxyethylene aliphatic alcohol ether, ethoxy castor oil, PMA, fatty acid polyethylene glycol ester, one or more in trilaurin APEO; Described wetting agent is selected from SP-SC3(Nanjing and holds up space chemical institute), SP-SC29(Nanjing holds up space chemical institute), SP-2845W(Nanjing holds up space chemical institute), fat alcohol polyethylene ether (AEO-3, AEO-5, AEO-9 etc.), TWEEN Series (T-60, T-61, T-65, T-80 etc.), Sulfates (lauryl sodium sulfate); Described dispersant is selected from SP-2728(Nanjing and holds up space chemical institute), SP-2836(Nanjing holds up space chemical institute), styryl phenyl polyoxyethylene poly-oxygen propylene aether phosphate, Sodium Polyacrylate, NNO (sodium methylene bis-naphthalene sulfonate), MF(methyl naphthalene sulfonate formaldehyde condensate), carboxymethyl cellulose, sodium lignin sulfonate, calcium lignosulfonate; Described stabilizing agent is selected from triethanolamine oleate, epoxidized linseed, epoxidized soybean oil; Described antifreezing agent be selected from ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite, urea, sucrose, glucose and in one or more mixture; Described antifreezing agent is selected from one or more the mixture in ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite, urea, sucrose, glucose; Described thickener is selected from xanthans, polyvinyl alcohol, sodium alginate, starch, organobentonite.
So-called main solvent refers to the primary solvent for dissolving described Herbicidal combinations herein.
Based on above-mentioned, described weed killer herbicide is microemulsion, in described weed killer herbicide, by weight calculating, described Herbicidal combinations accounts for 6% ~ 90%, main solvent accounts for 4% ~ 20%, cosolvent accounts for 2% ~ 10%, surfactant accounts for 2 ~ 20%, stabilizing agent accounts for 0.1% ~ 1%, antifreezing agent accounts for 1% ~ 5%, all the other are deionized water.Wherein, described solvent is the one of cyclohexanone, dimethylbenzene, ethanol, DMSO, methyl oleate, 2-butyl acetate; Described cosolvent is selected from alcohols, such as propyl alcohol, isopropyl alcohol and n-butanol, preferred n-butanol; Described surfactant be selected from 0201B, 0203B, 0204C, 2201, OP series, newborn No. 500 of agriculture, 33#, NP-10-P etc. have nonionic and the mixed surfactant of well emulsify performance; Described stabilizing agent is selected from triethanolamine oleate, epoxidized linseed, epoxidized soybean oil; Described antifreezing agent is selected from one or more the mixture in ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite, urea, sucrose, glucose.
Based on above-mentioned, described weed killer herbicide is missible oil, and in described weed killer herbicide, by weight calculating, described Herbicidal combinations accounts for 6% ~ 90%, main solvent accounts for 4% ~ 20%, cosolvent accounts for 3% ~ 15%, emulsifier accounts for 2% ~ 30%, all the other are deionized water.Wherein, described solvent is soybean oil, paddy rice oil, mineral oil (gasoline, diesel oil, machine oil), methyl oleate, 150# solvent naphtha, 200# solvent naphtha.Various aromatic hydrocarbons, aliphatic hydrocarbon, ketone, ethers, a kind of preferably in cyclohexanone, dimethylbenzene, ethanol, DMSO, methyl oleate, 2-butyl acetate, isopropyl alcohol, butanols, methyl naphthalene, dimethyl sulfoxide (DMSO), 1-METHYLPYRROLIDONE, ethyl acetate, acetone, butanone, ether, ethylene glycol or the mixture more than both; Described cosolvent is selected from alcohols, such as propyl alcohol, isopropyl alcohol and n-butanol, preferred n-butanol; Described emulsifier be agriculture breast 500, agriculture breast 600, Nongru-700, NP series, 0201B, 0203B, 2201, peaceful No. 31, breast, peaceful No. 33, breast, peaceful No. 37, breast, 0202,0202C, polyoxyethylene nonyl phenyl alkene ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy ether, polyoxyethylene aliphatic alcohol ether, ethoxy castor oil, PMA, fatty acid polyethylene glycol ester, one or more in trilaurin APEO.
Experiment shows, barnyard grass, moleplant seed, lady's-grass, Monochoria vaginalis etc. that described weed killer herbicide provided by the invention can prevent and kill off paddy field effectively endanger serious weeds in paddy field, have that consumption is few, broad weed-killing spectrum, the longevity of residure are long, to advantages such as crop safeties, therefore present invention also offers the application of described weed killer herbicide in killing weeds in rice field.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
embodiment 1:11% anilofos Stam F-34 aqueous cyhalofop-butyl emulsion
Anilofos 1%, Stam F-34 8%, cyhalofop-butyl 2%, solvent methyl oleate 15%, cosolvent n-butanol 6%, emulsifier polyoxyethylene nonyl phenyl alkene ether 3.0%, wetting agent fatty alcohol-polyoxyethylene ether 4.0%, dispersant styryl phenyl polyoxyethylene poly-oxygen propylene aether phosphate 4.0%, stabilizing agent epoxidized soybean oil 0.3%, antifreeze glycol 3%, thickener xanthans 0.2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are mixed with various auxiliary agent and filler, namely high shear agitation obtain 11% anilofos Stam F-34 aqueous cyhalofop-butyl emulsion.
embodiment 2:38.6% anilofos Stam F-34 aqueous cyhalofop-butyl emulsion
Anilofos 7.0%, Stam F-34 28.3%, cyhalofop-butyl 3.3%, solvent methyl oleate 20%, cosolvent n-butanol 8%, emulsifier polyoxyethylene nonyl phenyl alkene ether 4.0%, wetting agent fatty alcohol-polyoxyethylene ether 3.0%, dispersant styryl phenyl polyoxyethylene poly-oxygen propylene aether phosphate 4.0%, stabilizing agent epoxidized soybean oil 0.3%, antifreeze glycol 3%, thickener xanthans 0.2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are mixed with various auxiliary agent and filler, namely high shear agitation obtain
38.6% anilofos Stam F-34 aqueous cyhalofop-butyl emulsion.
embodiment 3:90%anilofos Stam F-34 aqueous cyhalofop-butyl emulsion
Anilofos 20%, Stam F-34 54%, cyhalofop-butyl 16%, solvent methyl oleate 5%, cosolvent n-butanol 3%, emulsifier polyoxyethylene nonyl phenyl alkene ether 1.0%, wetting agent fatty alcohol-polyoxyethylene ether 1.0%, dispersant styryl phenyl polyoxyethylene poly-oxygen propylene aether phosphate 2.0%, stabilizing agent epoxidized soybean oil 0.3%, antifreeze glycol 2%, thickener xanthans 0.2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are mixed with various auxiliary agent and filler, namely high shear agitation obtain 90% anilofos Stam F-34 aqueous cyhalofop-butyl emulsion.
embodiment 4:18%anilofos Stam F-34 cyhalofop-butyl microemulsion
Anilofos 2%, Stam F-34 15%, cyhalofop-butyl 1%, solvent cyclohexanone
15%,cosolvent n-butanol 5%, surfactant agriculture breast No. 500 10%, stabilizing agent epoxidized soybean oil 0.3%, antifreeze glycol 2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are mixed with various auxiliary agent and filler, namely high shear agitation obtain 18% anilofos Stam F-34 cyhalofop-butyl microemulsion.
embodiment 5:58%anilofos Stam F-34 cyhalofop-butyl microemulsion
Anilofos 10.5%, Stam F-34 42.5%, cyhalofop-butyl 5%, solvent cyclohexanone
15%,cosolvent n-butanol 6%, surfactant agriculture breast No. 500 10%, stabilizing agent epoxidized soybean oil 0.3%, antifreeze glycol 2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are mixed with various auxiliary agent and filler, namely high shear agitation obtain 58% anilofos Stam F-34 cyhalofop-butyl microemulsion.
embodiment 6:85%anilofos Stam F-34 cyhalofop-butyl microemulsion
Anilofos 18%, Stam F-34 55%, cyhalofop-butyl 12%, solvent cyclohexanone
6%,cosolvent n-butanol 2%, surfactant agriculture breast No. 500 3%, stabilizing agent epoxidized soybean oil 0.3%, antifreeze glycol 1%, deionized water complement to 100%.Have anilofos, Stam F-34, cyhalofop-butyl are mixed with various auxiliary agent and filler, namely high shear agitation obtain 85% anilofos Stam F-34 cyhalofop-butyl microemulsion.
embodiment 7:8%anilofos Stam F-34 cyhalofop-butyl missible oil
Anilofos 1%, Stam F-34 6%, cyhalofop-butyl 1%, solvent cyclohexanone
15%,cosolvent n-butanol 6%, emulsifier polyoxyethylene nonyl phenyl alkene ether 10%, deionized water complement to 100%.By anilofos, Stam F-34, cyhalofop-butyl and various auxiliary agent and filler is uniformly mixed, leave standstill filtration namely obtain 8% anilofos Stam F-34 cyhalofop-butyl missible oil.
embodiment 8:42%anilofos Stam F-34 cyhalofop-butyl missible oil
Anilofos 4%, Stam F-34 26%, cyhalofop-butyl 12%, solvent cyclohexanone
15%,cosolvent n-butanol 8%, emulsifier polyoxyethylene nonyl phenyl alkene ether 12%, deionized water complement to 100%.By anilofos, Stam F-34, cyhalofop-butyl and various auxiliary agent and filler is uniformly mixed, leave standstill filtration namely obtain 42% anilofos Stam F-34 cyhalofop-butyl missible oil.|
embodiment 9:70%anilofos Stam F-34 cyhalofop-butyl missible oil
Anilofos 8%, Stam F-34 48%, cyhalofop-butyl 4%, solvent cyclohexanone
10%,cosolvent n-butanol 5%, emulsifier polyoxyethylene nonyl phenyl alkene ether 10%, deionized water complement to 100%.By anilofos, Stam F-34, cyhalofop-butyl and various auxiliary agent and filler is uniformly mixed, leave standstill filtration namely obtain 70% anilofos Stam F-34 cyhalofop-butyl missible oil.
embodiment 10:24%anilofos Stam F-34 cyhalofop-butyl suspending agent
The secondary butyl ester 20% of anilofos 5%, Stam F-34 12%, cyhalofop-butyl 7%, solvent acetic acid, cosolvent n-butanol 8%, wetting agent lauryl sodium sulfate 3.0%, dispersant calcium lignosulfonate 4.0%, antifreeze glycol 3%, thickener xanthans 0.2%, preservative sodium benzoate 0.3%, defoamer organosiloxane 0.2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are uniformly mixed with various auxiliary agent and filler, sand milling mixes and namely obtain 24% anilofos Stam F-34 cyhalofop-butyl suspending agent.
embodiment 11:35%anilofos Stam F-34 cyhalofop-butyl suspending agent
Anilofos 8%, Stam F-34 23%, cyhalofop-butyl 4%, solvent methyl oleate 20%, cosolvent n-butanol 8%, wetting agent lauryl sodium sulfate 3.0%, dispersant calcium lignosulfonate 4.0%, antifreeze glycol 3%, thickener xanthans 0.2%, preservative sodium benzoate 0.3%, defoamer organosiloxane 0.2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are uniformly mixed with various auxiliary agent and filler, sand milling mixes and namely obtain 35% anilofos Stam F-34 cyhalofop-butyl suspending agent.
embodiment 12:68%anilofos Stam F-34 cyhalofop-butyl suspending agent
Anilofos 11%, Stam F-34 42%, cyhalofop-butyl 15%, solvent methyl oleate 15%, cosolvent n-butanol 5%, wetting agent lauryl sodium sulfate 3%, dispersant calcium lignosulfonate 3%, antifreeze glycol 2%, thickener xanthans 0.2%, preservative sodium benzoate 0.3%, defoamer organosiloxane 0.2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are uniformly mixed with various auxiliary agent and filler, sand milling mixes and namely obtain 68% anilofos Stam F-34 cyhalofop-butyl suspending agent.
embodiment 13:15%anilofos Stam F-34 cyhalofop-butyl suspension emulsion
Anilofos 4%, Stam F-34 8%, cyhalofop-butyl 3%, solvent methyl oleate 15%, emulsifier polyoxyethylene nonyl phenyl alkene ether 4.0%, wetting agent fatty alcohol-polyoxyethylene ether 3%, dispersant styryl phenyl polyoxyethylene poly-oxygen propylene aether phosphate 3%, stabilizing agent epoxidized soybean oil 0.3%, antifreeze glycol 2%, thickener xanthans 0.2%, deionized water complement to 100%.By anilofos, Stam F-34, cyhalofop-butyl and various auxiliary agent with filler is uniformly mixed, namely high shear agitation obtains 15% anilofos Stam F-34 cyhalofop-butyl suspension emulsion.
embodiment 14:50%anilofos Stam F-34 cyhalofop-butyl suspension emulsion
Anilofos 5%, Stam F-34 38%, cyhalofop-butyl 7%, solvent methyl oleate 10%, emulsifier polyoxyethylene nonyl phenyl alkene ether 4.0%, wetting agent fatty alcohol-polyoxyethylene ether 3%, dispersant styryl phenyl polyoxyethylene poly-oxygen propylene aether phosphate 3%, stabilizing agent epoxidized soybean oil 0.3%, antifreeze glycol 2%, thickener xanthans 0.2%, deionized water complement to 100%.By anilofos, Stam F-34, cyhalofop-butyl and various auxiliary agent with filler is uniformly mixed, namely high shear agitation obtains 50% anilofos Stam F-34 cyhalofop-butyl suspension emulsion.
embodiment 15:72%anilofos Stam F-34 cyhalofop-butyl suspension emulsion
Anilofos 9%, Stam F-34 45%, cyhalofop-butyl 18%, solvent methyl oleate 10%, emulsifier polyoxyethylene nonyl phenyl alkene ether 4.0%, wetting agent fatty alcohol-polyoxyethylene ether 3%, dispersant styryl phenyl polyoxyethylene poly-oxygen propylene aether phosphate 3%, stabilizing agent epoxidized soybean oil 0.3%, antifreeze glycol 2%, thickener xanthans 0.2%, deionized water complement to 100%.By anilofos, Stam F-34, cyhalofop-butyl and various auxiliary agent with filler is uniformly mixed, namely high shear agitation obtains 72% anilofos Stam F-34 cyhalofop-butyl suspension emulsion.
embodiment 16:30%anilofos Stam F-34 cyhalofop-butyl aqua
Anilofos 6%, Stam F-34 20%, cyhalofop-butyl 4%, solvent methyl oleate 10%, emulsifier aliphatic acid polyethenoxy ether 4.0%, thickener xanthans 0.2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are become homogeneous liquid namely to obtain 30% anilofos Stam F-34 cyhalofop-butyl aqua with various auxiliary agent stirring and dissolving.
embodiment 17:65%anilofos Stam F-34 cyhalofop-butyl aqua
Anilofos 11%, Stam F-34 42%, cyhalofop-butyl 12%, solvent methyl oleate 10%, emulsifier aliphatic acid polyethenoxy ether 4.0%, thickener xanthans 0.2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are become homogeneous liquid namely to obtain 65% anilofos Stam F-34 cyhalofop-butyl aqua with various auxiliary agent stirring and dissolving.
embodiment 18:80%anilofos Stam F-34 cyhalofop-butyl aqua
Anilofos 9%, Stam F-34 55%, cyhalofop-butyl 16%, solvent methyl oleate 10%, emulsifier aliphatic acid polyethenoxy ether 4.0%, thickener xanthans 0.2%, deionized water complement to 100%.Anilofos, Stam F-34, cyhalofop-butyl are become homogeneous liquid namely to obtain 80% anilofos Stam F-34 cyhalofop-butyl aqua with various auxiliary agent stirring and dissolving.
embodiment 19: the test of pesticide effectiveness of Herbicidal composition for rice field pharmaceutical preparation
Example 1 to embodiment 9 prepares Herbicidal composition for rice field pharmaceutical preparation, carry out effect experiment, with 30% anilofos missible oil, 1,34% Stam F-34 missible oil, 2,12% cyhalofop-butyl missible oil as a control group 3 as a control group as a control group, clear water is as blank group.
(1) each group medicine to be measured is to the synergy effect of weeds:
Co-toxicity coefficient method is adopted to evaluate the synergistic effect of Herbicidal composition for rice field provided by the invention and pharmaceutical preparation thereof: to suppress percentage (Y) to ask regression equation with the natural logrithm of drug concentration (X) and medicament to the growth inhibition percentage of target weeds or fresh weight, and calculate the EC of medicament to weeds
50value or EC
90value, then tries to achieve co-toxicity coefficient.Compound drug is evaluated to the synergy effect of weeds with co-toxicity coefficient, co-toxicity coefficient >120 is expressed as synergistic effect, co-toxicity coefficient is expressed as summation action between 80 ~ 120, and co-toxicity coefficient <80 is expressed as antagonism.
The co-toxicity coefficient computing formula adopted in the present embodiment is as follows:
Co-toxicity coefficient (CTC)=100/(EC is mixed × and P anilofos/EC anilofos+EC is mixed × and P Stam F-34/EC Stam F-34+EC is mixed × P cyhalofop-butyl/EC cyhalofop-butyl)
In formula: EC mixes the EC into mixture
50value (to lady's-grass, barnyard grass, lower same); P anilofos is anilofos shared part by weight in mixture active ingredient; P Stam F-34 is Stam F-34 shared part by weight in mixture active ingredient; P cyhalofop-butyl is cyhalofop-butyl shared part by weight in mixture active ingredient; EC anilofos is the EC of anilofos
50value; EC Stam F-34 is the EC of Stam F-34
50value; EC cyhalofop-butyl is the EC of cyhalofop-butyl
50value.The EC of each group
50value and co-toxicity coefficient are in table 1.
(2) each group medicine to be measured is to the cauline leaf process preventive effect result of various weeds
Test in Zhang Zhai town, Pei County, Jiangsu and Wei Miao town, carry out in the farmland covered by contract paddy field of peasant household Zhao Dun length and Zhao Dunqi, each group process repeats for 4 times, and processing area is 20m
2; The insecticide-applying way of the medicine to be measured that embodiment 1 to embodiment 9, control group 1, control group 2, control group 3 provide is the cauline leaf spraying of paddy rice 3 ~ 5 leaf phase.30 days statistics preventive effect results after medicine.Test process, formulation rate and preventive effect the results are shown in Table 2, and the paddy field growing state of each group is in table 2.
Preventive effect computing formula is:
Strain preventive effect (%)=(check plot weeds strain number-treatment region weeds strain number)/weeds strain number × 100, check plot
The EC of the medicine to be measured of each group of table 1
50value and co-toxicity coefficient
Experimental result from table 1, after anilofos, Stam F-34 and cyhalofop-butyl mixture in gained Herbicidal composition for rice field, the weight ratio of anilofos, Stam F-34 and cyhalofop-butyl is 0.5 ~ 20: 5 ~ 58: 0.5 ~ 19 time, its co-toxicity coefficient is all far more than 120, illustrate that anilofos, Stam F-34 and cyhalofop-butyl are after mixture, create obvious synergistic effect.Wherein, when the weight ratio of anilofos, Stam F-34 and cyhalofop-butyl is 7: 28.3: 3.3, co-toxicity coefficient is the highest, is optimum proportioning combination.
Each group of table 2 paddy field weed cauline leaf process medication administration amount to be measured and preventive effect result
From table 2, experimental result is known, compared with anilofos, Stam F-34, cyhalofop-butyl single dose, after anilofos, Stam F-34, cyhalofop-butyl mixture, the herbicidal effect of gained Herbicidal composition for rice field and pharmaceutical preparation thereof will apparently higher than any one single dose in three components, significant difference (P < 0.05), create synergistic effect, expand herbicide spectrum.The preventive effect effect effect of the Herbicidal composition for rice field that the embodiment of the present invention 1 to embodiment 9 provides to paddy field weed also has and significantly improves, significant difference (P < 0.05).
In sum, the invention provides Herbicidal composition for rice field after anilofos, Stam F-34, cyhalofop-butyl mixture, reach synergistic effect, expand herbicide spectrum, the weeds that the antagonism property of medicine is stronger also can effectively prevent and treat, and do not produce poisoning, can be used for water prevention weeds in paddy field.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (9)
1. a Herbicidal combinations, is characterized in that: be made up of anilofos, Stam F-34 and cyhalofop-butyl, and the weight ratio of described anilofos, Stam F-34 and cyhalofop-butyl is 0.5 ~ 20: 5 ~ 58: 0.5 ~ 19.
2. Herbicidal combinations according to claim 1, is characterized in that: the weight ratio of described anilofos, Stam F-34 and cyhalofop-butyl is 5 ~ 20: 25 ~ 55: 2 ~ 12.
3. a weed killer herbicide, is characterized in that: be made up of the Herbicidal combinations described in claim 1 or 2 and standard adjuvant.
4. weed killer herbicide according to claim 3, is characterized in that: the percentage by weight that described Herbicidal combinations accounts for described weed killer herbicide is 6% ~ 90%.
5. the weed killer herbicide according to claim 3 or 4, is characterized in that: described weed killer herbicide is aqueous emulsion, microemulsion, missible oil, suspending agent, suspension emulsion, aqua.
6. weed killer herbicide according to claim 5, it is characterized in that: described weed killer herbicide is aqueous emulsion, in described weed killer herbicide, by weight calculating, described Herbicidal combinations accounts for 6% ~ 90%, main solvent accounts for 3% ~ 25%, cosolvent accounts for 1% ~ 10%, emulsifier accounts for 1% ~ 5%, wetting agent accounts for 1% ~ 5%, dispersant accounts for 1% ~ 5%, stabilizing agent accounts for 0.1% ~ 1%, antifreezing agent accounts for 1% ~ 5%, thickener accounts for 0.1% ~ 0.5%, all the other are deionized water.
7. weed killer herbicide according to claim 5, it is characterized in that: described weed killer herbicide is microemulsion, in described weed killer herbicide, by weight calculating, described Herbicidal combinations accounts for 6% ~ 90%, main solvent accounts for 4% ~ 20%, cosolvent accounts for 2% ~ 10%, surfactant accounts for 2 ~ 20%, stabilizing agent accounts for 0.1% ~ 1%, antifreezing agent accounts for 1% ~ 5%, all the other are deionized water.
8. weed killer herbicide according to claim 5, it is characterized in that: described weed killer herbicide is missible oil, in described weed killer herbicide, by weight calculating, described Herbicidal combinations accounts for 6% ~ 90%, main solvent accounts for 4% ~ 20%, cosolvent accounts for 3% ~ 15%, emulsifier accounts for 2% ~ 30%, all the other are deionized water.
9. the application of weed killer herbicide in killing weeds in rice field described in claim 3 ~ 8 any one.
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| CN201510410952.5A CN104920447A (en) | 2015-07-14 | 2015-07-14 | Rice field weeding composition, weed killer and application thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182536A (en) * | 1996-05-23 | 1998-05-27 | 罗姆和哈斯公司 | Concerted weedicide composition |
| CN101999400A (en) * | 2010-12-07 | 2011-04-06 | 陕西韦尔奇作物保护有限公司 | Cyhalofop-butyl-containing weeding composition |
| CN104255729A (en) * | 2014-10-11 | 2015-01-07 | 江苏省农业科学院 | Pesticide composition containing propanil and cyhalofop-butyl and application of pesticide composition |
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2015
- 2015-07-14 CN CN201510410952.5A patent/CN104920447A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182536A (en) * | 1996-05-23 | 1998-05-27 | 罗姆和哈斯公司 | Concerted weedicide composition |
| CN101999400A (en) * | 2010-12-07 | 2011-04-06 | 陕西韦尔奇作物保护有限公司 | Cyhalofop-butyl-containing weeding composition |
| CN104255729A (en) * | 2014-10-11 | 2015-01-07 | 江苏省农业科学院 | Pesticide composition containing propanil and cyhalofop-butyl and application of pesticide composition |
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