CN102919229B - Herbicide composition - Google Patents
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- CN102919229B CN102919229B CN201210488698.7A CN201210488698A CN102919229B CN 102919229 B CN102919229 B CN 102919229B CN 201210488698 A CN201210488698 A CN 201210488698A CN 102919229 B CN102919229 B CN 102919229B
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Abstract
The invention relates to the field of pesticide preparations and discloses a herbicide composition. The herbicide composition comprises picolinafen and mesotrione in a weight ratio of (1:0.2)-(1:10). The invention also provides herbicide composition preparations. The active ingredients of the herbicide composition preparations are formed by the herbicide composition. The herbicide composition and conventional auxiliary materials can be prepared into such dosage forms as suspending agents, wettable powder or water dispersible granules according to the known methods. The herbicide composition has the following beneficial effects that the herbicide composition is formed by compounding picolinafen and mesotrione, expands the weed-controlling spectrum, can simultaneously control most weeds in the corn fields, enhances the effect of controlling such weeds as barnyard grass, crab grass, field bindweed and cirsium setosum, simultaneously has the advantages of long use age, safety to later crops, long duration and environmental safety and can be widely applied to the field of agriculture.
Description
Technical field
The present invention relates to pesticidal preparations field, relate to specifically a kind of Herbicidal combinations, the Herbicidal combinations that especially a kind of active ingredient is comprised of fluorine pyrrole acyl grass amine and mesotrione.
Background technology
Corn is one of the cereal crops the most widely that distribute in the world, and cultivated area is only second to corn and paddy rice and occupies the 3rd.There are two large famous maize gold ribbons in the whole world, lays respectively at the U.S. and China.China is world's second largest Maize Production state, simultaneously Ye Shi world's second largest country of consumption.Corn be in Three major grain crops most suitable as the kind of the raw material of industry, be also the cereal crops that processing stage is the highest.The feature of corn producing industry is that processing space is large, industry chain length, product are very abundant, comprise the eight large series such as starch, starch sugar, modified starch, alcohol, enzyme preparation, flavouring, medicinal, chemical industry, but be mainly starch and alcohol, mostly other products is the by product of these two deeper processed goods of product or production, its value of the processed goods that these are profound or by product is quite high has higher added value, just can bring high profit thereupon.Along with Chinese maize processing industry degree deepens constantly, product chain constantly expands and extend, corn deep processing industry market scale and having a high potential.
The corn of all Maize Regions of China, always has a large amount of weeds to occur.Corn all has plantation in China various places, and corn weeds kind is a lot, and various places are because of factor weeds kind differences such as weather, soil.According to investigations, corn field common weed has kind more than 30, as grassy weeds such as barnyard grass, moleplant seed, lady's-grass, green foxtail, eleusine indica, Bermuda grass, reeds, the Convolvulaceae weeds such as field bindweed, the sedge weeds such as cyperus iria, and the broad leaved weed such as knotweed, Siberian cocklebur, piemarker, kitchen garden, black nightshade, lamb's-quarters, acalypha copperleaf, ox chickweed, Amaranthus retroflexus, recessed amaranth, Horseweed Herb, elscholtiza, setose thistle, field thistle, common sow thistle, Eclipta prostrata, ivy glorybind, humid euphorbia, dayflower, wild watermelon, Asiatic plantain, alfalfa, wild soybean.Wherein, the frequency occurring with lady's-grass, barnyard grass, eleusine indica, dayflower is the highest, endangers the most serious.
Corn field weed is prevented and kill off and mainly be take chemical control as main, but the pharmacy variety that can use safely is at present few, and especially after seedling, medicament more lacks safely and effectively.Corn field Common Herbicides has Acetochlor atrazine, nicosulfuron etc.Atrazine herbicidal effect is good, to corn safety, but because of environmental pollution and long residual to rear stubble drug injury problem, by European Union's restriction, is used.Nicosulfuron is as ALS inhibitor, cauline leaf activity is higher, can effectively prevent and kill off most grassy weeds of corn field, but the safety existing problems to corn, except corn, hand in vain system, sweet corn, waxy corn and pop corn to this medicament sensitivity, also found in recent years indivedual common dent corns to more responsive.Acetochlor is one of weed killer herbicide of current China usage amount maximum, consider and be exposed to the above potential hazard to human body of the every daily ingestion tolerance of Acetochlor, and the harm of Acetochlor metabolite to human body in surface water, can't get rid of the existence of genotoxicity now, EU Committee determined to re-register by Determination of Herbicide Acetochlor, and the EU member country of having ordered cancels its registration on July 23rd, 2012.
Along with the development of agricultural cience and farming techniques, one of the applying as saving of labor, save time of chemical herbicide, cost-effective strong well stimulation.The usage ratio of domestic Chemical Weeding in Maize Field agent almost reaches 100%, and its dosage is very large.At present, corn chemical herbicide kind is more, but mostly has various problems, as narrow in herbicide spectrum, easily produce resistance, lasting period short, to the uneasy congruent problem of succession crop.Along with maize culture mode, cropping system constantly change, crop smothering problem is increasingly severe, and weeds in field is wide in variety, emergence period is long, and density is high, and harm is heavy, selecting safety, efficient chemical herbicide is the main method of current corn field weeding, is also the key of guaranteeing that Maize Production gets an abundant harvest.
Summary of the invention
In view of this, object of the present invention provides a kind of safe, efficient Herbicidal combinations for corn field.
For realizing object of the present invention, the present invention adopts following technical scheme:
A Herbicidal combinations, is comprised of fluorine pyrrole acyl grass amine and mesotrione.
Fluorine pyrrole acyl grass amine, English name picolinafen, structural formula is:
The picolinamide class weed killer herbicide of fluorine pyrrole Xian Caoanshi BASF AG exploitation, in listing in 2002.This kind is selective exposure and residual weed killer herbicide, and the mode of action is for passing through the inhibition to phytoene dehydrogenase, the biosynthesis of obstruction class carotene.Compare with other picolinamide class weed killer herbicides, fluorine pyrrole acyl grass amine has that activity of weeding is high, the duration long, is difficult for decomposing, the feature to Crop securify.Be mainly used in corn, soybean and wheatland and prevent and kill off multiple annual gramineous weed and some broad leaved weeds.
Mesotrione, chemical name is 2-(4-mesyl)-2-nitrobenzene formyl) cyclohexane-1.3-diketone, English name mesotrione.Mesotrione is wide spectrum selective herbicide before a kind of bud that can suppress medical midbodies of para (ortho)-hydroxybenzoic acetone acid esters dual oxide enzyme (HPPD) and after seedling.Can effectively prevent and treat main broadleaved herb and some grassy weeds.Mesotrione is easily in plant xylem and phloem conduction.There is action of contace poison and lasting effect.Corn field annual broadleaf weed and part grassy weed are had to good control efficiency as piemarker, three-coloured amaranth, lamb's-quarters, knotweed, barnyard grass, lady's-grass etc.
Fluorine pyrrole acyl grass amine is different with mesotrione structure, the mechanism of action is different, the Herbicidal combinations being comprised of fluorine pyrrole acyl grass amine and mesotrione has expanded herbicide spectrum, can prevent and kill off most of weeds of corn field simultaneously, also there is wide, long to rear stubble safety, lasting period, environmentally safe advantage of use age simultaneously.
Different Herbicidal combinations preparation active components are mixed rear each active component due to the difference of composition, structure, physicochemical property, make 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 the effect of its generation is greater than the sum total of each composition effect; And the effect that summation action is exactly its generation equals the sum total of each composition effect; Antagonism refers to that when 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, the phenomenon that general effect is declined.
The present invention evaluates two kinds of mixed interactions of different activities component of the present invention with reference to Sun Yunpei (Sun Y-P) method.The present invention is by calculating the co-toxicity coefficient of fluorine pyrrole acyl grass amine after mixed with mesotrione, evaluate the two mixed after effect, result shows, the co-toxicity coefficient that the weight ratio of the careless amine of described fluorine pyrrole acyl and mesotrione is 1:0.2-1:10 is all greater than 120.By outdoor biological activity determination test, find, the ratio that the weight ratio of described fluorine pyrrole acyl grass amine and mesotrione is 1:0.2-1:10 is mixed use and is had notable synergistic effect.
Preferably, the weight ratio of described fluorine pyrrole acyl grass amine and mesotrione is 1:0.2-1:10.1:2-1:5 more preferably.
Fluorine pyrrole acyl grass amine and mesotrione in the present invention combine in certain proportion, and both are composite, and synergistic effect is obvious, has reduced active ingredient dosage, has increased safety, has delayed the generation of herbicide resistance, can be widely used in agriculture field.
The present invention also provides a kind of Herbicidal combinations preparation, and it is made by Herbicidal combinations of the present invention and conventional auxiliary material.
Herbicidal combinations preparation of the present invention can be made various formulations by Herbicidal combinations of the present invention and conventional auxiliary material as required.Preferably, Herbicidal combinations preparation of the present invention is suspending agent, wetting powder or water dispersible granules.
Herbicidal combinations preparation of the present invention is suspending agent, and the percentage by weight that wherein said Herbicidal combinations accounts for described suspending agent is that percentage by weight that 1%-40%, wetting agent account for described suspending agent is that percentage by weight that 1%-10%, dispersant account for described suspending agent is that the percentage by weight that 1%-10%, thickener account for described suspending agent is that 0.1%-2%, surplus are water.
Herbicidal combinations preparation of the present invention also can be wetting powder, and the percentage by weight that wherein said Herbicidal combinations accounts for described wetting powder is that percentage by weight that 1%-90%, wetting agent account for described wetting powder is that the percentage by weight that 1%-10%, dispersant account for described wetting powder is that 1%-10%, surplus are carrier.
Herbicidal combinations preparation of the present invention also can be water dispersible granules, the percentage by weight that wherein said Herbicidal combinations accounts for described water dispersible granules is that percentage by weight that 1%-90%, wetting agent account for described water dispersible granules is that percentage by weight that 1%-10%, dispersant account for described water dispersible granules is that percentage by weight that 1%-10%, disintegrant account for described water dispersible granules is that the percentage by weight that 0.1%-5%, adhesive account for described water dispersible granules is 0.1%-5%, and surplus is carrier.
Experiment shows, Herbicidal combinations preparation of the present invention can be prevented and kill off the serious corn field weeds of harm such as the barnyard grass, lady's-grass, field bindweed, field thistle of corn field effectively, so the present invention also provides the application of described Herbicidal combinations preparation in Control Weeds in Maize Field.
Embodiment
The embodiment of the invention discloses a kind of Herbicidal combinations.Those skilled in the art can use for reference content herein, suitably improve technological parameter and realize.Special needs to be pointed out is, all similar replacements and change apparent to those skilled in the artly, they are all deemed to be included in the present invention.Product of the present invention is described by preferred embodiment, and related personnel obviously can change product as herein described or suitably change and combination within not departing from content of the present invention, spirit and scope, realizes and apply the technology of the present invention.
For realizing object of the present invention, the present invention adopts following technical scheme:
A Herbicidal combinations, is comprised of fluorine pyrrole acyl grass amine and mesotrione.
Preferably, the weight ratio of described fluorine pyrrole acyl grass amine and mesotrione is 1:0.2-1:10.1:2-1:5 more preferably.
The former medicine of agricultural chemicals is that active component generally can not directly be used, and must process and be mixed with various types of preparations, could use.Therefore the present invention also provides a kind of Herbicidal combinations preparation, and it is made by Herbicidal combinations of the present invention and conventional auxiliary material.
The form of preparation claims formulation, Herbicidal combinations preparation of the present invention can be made various formulations by Herbicidal combinations of the present invention and conventional auxiliary material as required, and wherein said auxiliary material comprises corresponding carrier, surfactant, dispersant or other agricultural agents.What agricultural chemicals use was at present more is that pulvis, suspending agent, wetting powder, missible oil, suspending agent, microcapsule suspending agent, water dispersible granules etc. more than ten are planted formulation.The formulation of Herbicidal combinations preparation of the present invention comprises suspending agent, wetting powder or water dispersible granules.
Herbicidal combinations preparation of the present invention is suspending agent, and the percentage by weight that wherein said Herbicidal combinations accounts for described suspending agent is that percentage by weight that 1%-40%, wetting agent account for described suspending agent is that percentage by weight that 1%-10%, dispersant account for described suspending agent is that the percentage by weight that 1%-10%, thickener account for described suspending agent is that 0.1%-2%, surplus are water.
Herbicidal combinations preparation of the present invention also can be wetting powder, and the percentage by weight that wherein said Herbicidal combinations accounts for described wetting powder is that percentage by weight that 1%-90%, wetting agent account for described wetting powder is that the percentage by weight that 1%-10%, dispersant account for described wetting powder is that 1%-10%, surplus are carrier.
Herbicidal combinations preparation of the present invention also can be water dispersible granules, the percentage by weight that wherein said Herbicidal combinations accounts for described water dispersible granules is that percentage by weight that 1%-90%, wetting agent account for described water dispersible granules is that percentage by weight that 1%-10%, dispersant account for described water dispersible granules is that percentage by weight that 1%-10%, disintegrant account for described water dispersible granules is that the percentage by weight that 0.1%-5%, adhesive account for described water dispersible granules is 0.1%-5%, and surplus is carrier.
Wetting agent, dispersant, thickener, disintegrant, adhesive and the carrier that the above various preparations of preparation are used and other auxiliary materials are and well known to a person skilled in the art.
Wetting agent of the present invention is lauryl sodium sulfate, dodecyl sodium sulfate, pull open one or more in powder, moistening penetrant t, Negel, fatty alcohol polyglycol ether sulphate, fat alcohol polyethylene ether, polyoxyethylene nonylphenol ether, sorbitan fatty acid ester APEO, Fluhyzon formaldehyde condensation products.
Dispersant of the present invention is sodium lignin sulfonate, calcium lignosulfonate, Sodium Polyacrylate, di-2-ethylhexylphosphine oxide naphthalene sulfonate, alkyl amine group taurate, sodium methylene bis-naphthalene sulfonate formaldehyde condensation products, carboxymethyl cellulose, sodium phosphate trimer, alkylnaphthalene sulfonate condensation polymer.
Thickener of the present invention is xanthans, polyvinyl alcohol, sodium alginate, starch, organobentonite.
Disintegrant of the present invention is urea, sodium carboxymethylcellulose, ammonium sulfate, mineral salt, silica gel, PEG, SF-04.
Adhesive of the present invention is sucrose, soluble starch, Sodium Polyacrylate, dextrin, xanthans.
Carrier of the present invention is one or more of kaolin, diatomite, precipitated calcium carbonate, attapulgite, white carbon, urea, ammonium sulfate.
In order further to understand the present invention, below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1: Toxicity Determination:
The synergy being mixed to weeds in order to understand fluorine pyrrole acyl grass amine and mesotrione, carry out following test:
Test method: test soil is quantitatively filled to 4/5 place of basin alms bowl, adopts top pouring, make soil complete wetting to saturated mode.By pretreated, for examination weed seed, be evenly sowed at soil surface, earthing 0.5cm, after planting keeps soil fully moistening, moves into greenhouse cellar culture, grows to the 2-3 leaf phase carry out dispenser processing to weeds.Weed seed every 20 as a processing, each is processed 4 times and repeats.Calculate preventive effect, then by method of least squares, calculate concentration EC in inhibition
50(95% confidence interval), then calculate co-toxicity coefficient (CTC) by the abundant method of Sun Yun.Co-toxicity coefficient (CTC) >=120 shows as synergistic effect; (CTC)≤80 show as antagonism to co-toxicity coefficient; 80< co-toxicity coefficient (CTC) <120 shows as summation action.Add up different proportionings and the results are shown in Table 1.
Wherein, co-toxicity coefficient computing formula is as follows:
Actual measurement toxicity index (ATI)=(standard medicament EC
50/ reagent agent EC
50) * 100
Theoretical toxicity index (TTI)=(percentage composition of A in toxicity index * mixture of A)+(percentage composition of B in toxicity index * mixture of B)
Co-toxicity coefficient (CTC)=[the theoretical virulence coefficient (TTI) of mixture actual measurement virulence coefficient (ATI)/mixture] * 100
The different proportioning fluorine of table 1 pyrrole acyl grass amine and mesotrione are measured the synergy of weeds
| Process | EC 50(μg/mL) | ATI | TTI | Co-toxicity coefficient CTC |
| Fluorine pyrrole acyl grass amine | 8.78 | 100 | / | / |
| Mesotrione | 13.46 | / | / | / |
| Fluorine pyrrole acyl grass amine: mesotrione (1: 10) | 7.23 | 121.44 | 68.39 | 177.56 |
| Fluorine pyrrole acyl grass amine: mesotrione (1:7) | 6.76 | 129.88 | 69.58 | 186.67 |
| Fluorine pyrrole acyl grass amine: mesotrione (1:5) | 5.89 | 149.07 | 71.03 | 209.88 |
| Fluorine pyrrole acyl grass amine: mesotrione (1:2) | 6.45 | 136.12 | 69.58 | 195.65 |
| Fluorine pyrrole acyl grass amine: mesotrione (1:1) | 6.12 | 143.46 | 82.62 | 173.65 |
| Fluorine pyrrole acyl grass amine: mesotrione (1:033) | 5.23 | 167.88 | 91.31 | 183.86 |
| Fluorine pyrrole acyl grass amine: mesotrione (1:0.2) | 5.45 | 161.10 | 94.21 | 171.01 |
From table 1 result, fluorine pyrrole acyl grass amine and mesotrione proportioning are between 1:0.2-1:10, and co-toxicity coefficient is greater than 120, has synergistic effect.
Embodiment 2:15% fluorine pyrrole acyl grass amine mesotrione SC
Fluorine pyrrole acyl grass amine 3%, mesotrione 12%, AEO-34%, Sodium Polyacrylate 8%, polyvinyl alcohol 1%, water supply 100%, through abundant mixed grinding, obtain 15% fluorine pyrrole acyl grass amine mesotrione SC.
Embodiment 3:40% fluorine pyrrole acyl grass amine mesotrione SC
Fluorine pyrrole acyl grass amine 4%, mesotrione 36%, T-603%, calcium lignosulfonate 7%, xanthans 1.5%, water supply 100%, through abundant mixed grinding, obtain 40% fluorine pyrrole acyl grass amine mesotrione SC.
Embodiment 4:35% fluorine pyrrole acyl grass amine mesotrione WP
Fluorine pyrrole acyl grass amine 29%, mesotrione 6%, pull open powder 2%, NNO 5%, diatomite and supply 100%, through air-flow crushing, fully mix, obtain 35% fluorine pyrrole acyl grass amine mesotrione WP.
Embodiment 5:70% fluorine pyrrole acyl grass amine mesotrione WP
Fluorine pyrrole acyl grass amine 20%, mesotrione 50%, dodecyl sulphate 3%, sodium lignin sulfonate 6%, kaolin supply 100%, through air-flow crushing, fully mix, 70% fluorine pyrrole acyl grass amine mesotrione WP.
Embodiment 6:46% fluorine pyrrole acyl grass amine mesotrione WDG
Fluorine pyrrole acyl grass amine 10%, mesotrione 36%, pull open powder 3%, NNO 7%, PEG2%, dextrin 2%, diatomite and supply 100%, through air-flow crushing, fully mix, mediate granulation, drying and screening, obtain 46% fluorine pyrrole acyl grass amine mesotrione WDG.
Embodiment 7:80% fluorine pyrrole acyl grass amine mesotrione WDG
Fluorine pyrrole acyl grass amine 20%, mesotrione 60%, neopelex 2%, sodium phosphate trimer 5%, ammonium sulfate 3%, starch 1%, kaolin supply 100%, through air-flow crushing, fully mix, mediate granulation, drying and screening, obtain 80% fluorine pyrrole acyl grass amine mesotrione WDG.
Embodiment 8: field control effectiveness test:
In the corn 1-3 leaf phase, respectively with the processing of spraying of 30% fluorine pyrrole acyl grass amine WDG, 15% mesotrione SC and embodiment product of the present invention, each processes effective ingredient consumption is 70g/hm
2.After medicine, 30d adds up respectively the preventive effect to barnyard grass, lady's-grass, field bindweed, field thistle, the results are shown in Table 2.
Each embodiment of table 2 is to the preventive effect of weeds (%)
From table 2 result, effective ingredient consumption in described Herbicidal combinations preparation is less than under the prerequisite of each single dose effective ingredient consumption, its preventive effect is higher than the preventive effect of each single dose, show in Herbicidal combinations preparation of the present invention that each active component is without cross tolerance, control efficiency has synergistic effect, can effectively prevent and kill off most of weeds of corn field, the weeds preventive effects such as barnyard grass, lady's-grass, field bindweed, field thistle are strengthened.
The explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (8)
1. a Herbicidal combinations, is characterized in that, fluorine pyrrole acyl grass amine and mesotrione, consists of;
Described fluorine pyrrole acyl grass amine and mesotrione weight ratio are 1:0.2-1:10.
2. composition according to claim 1, is characterized in that, described fluorine pyrrole acyl grass amine and mesotrione weight ratio are 1:2-1:5.
3. a Herbicidal combinations preparation, is characterized in that, by Herbicidal combinations described in claim 1-2 any one and conventional auxiliary material, is made.
4. Herbicidal combinations preparation according to claim 3, is characterized in that, it is suspending agent, wetting powder, water dispersible granules.
5. Herbicidal combinations preparation according to claim 4, it is characterized in that, it is suspending agent, and the percentage by weight that wherein said Herbicidal combinations accounts for described suspending agent is that percentage by weight that 1%-40%, wetting agent account for described suspending agent is that percentage by weight that 1%-10%, dispersant account for described suspending agent is that the percentage by weight that 1%-10%, thickener account for described suspending agent is that 0.1%-2%, surplus are water.
6. Herbicidal combinations preparation according to claim 4, it is characterized in that, it is wetting powder, and the percentage by weight that wherein said Herbicidal combinations accounts for described wetting powder is that percentage by weight that 1%-90%, wetting agent account for described wetting powder is that the percentage by weight that 1%-10%, dispersant account for described wetting powder is that 1%-10%, surplus are carrier.
7. Herbicidal combinations preparation according to claim 4, it is characterized in that, it is water dispersible granules, the percentage by weight that wherein said Herbicidal combinations accounts for described water dispersible granules is that percentage by weight that 1%-90%, wetting agent account for described water dispersible granules is that percentage by weight that 1%-10%, dispersant account for described water dispersible granules is that percentage by weight that 1%-10%, disintegrant account for described water dispersible granules is that the percentage by weight that 0.1%-5%, adhesive account for described water dispersible granules is 0.1%-5%, and surplus is carrier.
8. the application of Herbicidal combinations preparation in Control Weeds in Maize Field described in claim 3-7 any one.
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| CN103535343A (en) * | 2013-09-22 | 2014-01-29 | 南通嘉禾化工有限公司 | Picolinafen suspension for weed control |
| CN106561661A (en) * | 2016-11-16 | 2017-04-19 | 佛山市盈辉作物科学有限公司 | Weeding composition of picolinafen and MCPA-issoctyl |
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|---|---|---|---|---|
| CN1758850A (en) * | 2003-03-13 | 2006-04-12 | 巴斯福股份公司 | Herbicidal mixtures containing Picolinafen |
| CN1762214A (en) * | 1999-10-14 | 2006-04-26 | 巴斯福股份公司 | Synergistic herbicidal methods and composition |
| CN101971841A (en) * | 2010-05-24 | 2011-02-16 | 北京颖新泰康国际贸易有限公司 | Herbicide composition and application thereof |
| CN102027963A (en) * | 2009-09-28 | 2011-04-27 | 南京华洲药业有限公司 | Herbicidal composition containing diflufenzopyr and mesotrione and application thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762214A (en) * | 1999-10-14 | 2006-04-26 | 巴斯福股份公司 | Synergistic herbicidal methods and composition |
| CN1758850A (en) * | 2003-03-13 | 2006-04-12 | 巴斯福股份公司 | Herbicidal mixtures containing Picolinafen |
| CN102027963A (en) * | 2009-09-28 | 2011-04-27 | 南京华洲药业有限公司 | Herbicidal composition containing diflufenzopyr and mesotrione and application thereof |
| CN101971841A (en) * | 2010-05-24 | 2011-02-16 | 北京颖新泰康国际贸易有限公司 | Herbicide composition and application thereof |
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