CN102487956A - Composite herbicide used after wheat seedling emergence - Google Patents
Composite herbicide used after wheat seedling emergence Download PDFInfo
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- CN102487956A CN102487956A CN2011103854240A CN201110385424A CN102487956A CN 102487956 A CN102487956 A CN 102487956A CN 2011103854240 A CN2011103854240 A CN 2011103854240A CN 201110385424 A CN201110385424 A CN 201110385424A CN 102487956 A CN102487956 A CN 102487956A
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Abstract
The invention relates to the technical field of pesticides and discloses a composite herbicide used after wheat seedling emergence. The composite herbicide used after wheat seedling emergence comprises two active components of thifensulfuron methyl and clodinafop-propargyl, wherein a weight ratio of thifensulfuron methyl to clodinafop-propargyl is 1: (1 to 4), and preferably, the composite herbicide used after wheat seedling emergence comprises 5 to 85% by mass of thifensulfuron methyl and clodinafop-propargyl. The composite herbicide used after wheat seedling emergence can eliminate annual broad leaf weeds of the wheat land and prevent and eliminate gramineous weeds of the wheat land, has obvious weed removal effects and obvious synergistic effects, and does not influence after-cultured crops. Therefore, the composite herbicide used after wheat seedling emergence is an ideal herbicide.
Description
Technical field
The present invention relates to technical field of pesticide, be specifically related to a kind of mixed herbicide of wheat after seedling.
Background technology
Wheat is one of staple food crop of northern China, also is important forage crop, and the long-term cultivated area of China is only second to the paddy rice cultivated area at more than 3,000 ten thousand hectares.Wheatland crop smothering area accounts for more than 30% of total cultivated area, and wherein serious injured area is more than 8%, and the general underproduction can be had no harvest when serious more than 15%.Therefore, the usage ratio of domestic wheat paddock weed killer herbicide almost reaches 100%, and its dosage is very big.At present; Behind the domestic wheat paddock seedling there be the main medicament of weed killer herbicide of management of weeds: fenoxaprop, methyl two sulphurs are grand, fluorine azoles sulphur is grand, tribenuron-methyl, fluroxypyr, dicamba, metsulfuron-methyl, thifensulfuron methyl, isoproturon etc.; But because of using for many years, many weeds have produced pesticide resistance, cause its consumption to strengthen; Make wheat produce recessive poisoning and the underproduction easily, and also not too safe to succession crop.In addition, because the use of chemical herbicide for many years, variation has taken place in the weed control of China, and originally the north is that main, south is to act the leading role to become that the South and the North is grass family and broad leaved weed coexists with the broad leaved weed with the grassy weed.So just press for and can prevent and kill off the wheat paddock grassy weed, can prevent and kill off broad leaved weed again, neither influence the safety of succession crop, friendly to environment again weed killer herbicide, and this type of weed killer herbicide of China is seldom seen at present.
Thifensulfuronmethyl belongs to selective herbicide behind the inner sucting conduction type seedling, is the branched-chain amino acid synthetic inhibitor, can suppress the biosynthesis of valine, leucine, isoleucine, stops cell division, and sensitive crop is stopped growing.Be cauline leaf inorganic agent behind a kind of efficient selective bud, can be used for cereal crop and prevent and kill off 1 year living broad leaved weed.Main through weeds blade face and root system absorption and conduction.Be mainly used in
Prevent and kill off the broad leaved weed between cereal crop wheat, barley, oat, corn field, like anti-branch
Amaranth, kitchen garden, descurainia sophia (l.) webb ex prantl, shepherd's purse, salsola collina, clearvers, Veronica, ox chickweed etc. are invalid to field thistle, field bindweed and dogstail etc.After the general dispenser, susceptible weeds stops growing immediately, the back death of 1 week.Method for using: cereal crops such as wheat, barley, oat 2 leaf phase to booting stage behind seedling, 1 year living broad leaved weed seedling stage before blooming, every mu of usefulness 75% suspending agent 1.6-3.1 gram, to 30 kilograms in water, the even spraying weeds.
Alkynes grass ester is a selectivity inner sucting conduction type weed killer herbicide, can absorbed, and in the plant body, conduct by the root of weeds, leaf.Through suppressing the activity of acetolactate synthestase (ALS), thereby influence the biosynthesis of branched-chain amino acid (as: leucine, isoleucine, valine etc.).Show as growing point necrosis, vein chlorosis behind the hazard of plant, plant growing receives severe inhibition, dwarfing, and final complete stool is withered.Susceptible weeds stops growing after absorbing medicament immediately, and 1-3 is dead after week.Be mainly used in grassy weeds such as preventing and kill off wild oat, amur foxtail, bromegrass, Triticum tauschii, invalid to broad leaved weed.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can prevent and kill off broad leaved weed, can prevent and kill off grassy weed again, and respond well mixed herbicide of wheat after seedling.。
In order to realize the foregoing invention purpose, the present invention provides following technical scheme:
A kind of mixed herbicide of wheat after seedling comprises thifensulfuronmethyl and alkynes grass ester, and the weight ratio of thifensulfuronmethyl and alkynes grass ester is 1: 1～1: 4.
As preferably, the weight ratio of thifensulfuronmethyl and alkynes grass ester is 1: 1.5～1: 3 in the complex weedicide according to the invention.
More preferably, the weight ratio of thifensulfuronmethyl and alkynes grass ester is 1: 2 in the complex weedicide according to the invention.
On the other hand, the quality percentage composition of thifensulfuronmethyl and alkynes grass ester in the said complex weedicide is provided is 5～85% of said complex weedicide in the present invention.
As preferably, in the complex weedicide according to the invention, thifensulfuronmethyl and two kinds of active components of alkynes grass ester according to above-mentioned weight ratio composite after, process missible oil, suspending agent, oil-suspending agent, wetting powder, water dispersible granules (dry suspending agent).
Synergy after being mixed with the co-toxicity coefficient method evaluation of Sun Yunpei; The result show thifensulfuronmethyl, alkynes grass ester in the composite co-toxicity coefficient of 1: 1～1: 4 ratio obviously greater than 120; Reach remarkable synergistic effect; It is comparatively suitable to explain that thifensulfuronmethyl, alkynes grass ester is mixed in 1: 1～1: 4 ratio, and annual single broadleaf weed is had significant synergies.
Safety determination test to wheat shows that the composite cauline leaf of thifensulfuronmethyl alkynes grass ester is handled, and suppresses the ED of wheat growth 10%
10=633.5774, the ED of inhibition weed growth 90%
90=147.8637, selectivity factor is 633.5774/147.8637=4.28＞2, thinks that this medicament has obvious selectivity, and thifensulfuronmethyl alkynes grass ester has good safety to wheat.
Complex weedicide according to the invention shows through the field control effectiveness test in 2 years, arrives period of seedling establishment in the 3 leaf phases of wheat, and weeds 1-5 leaf does not wait the phase, and wheat is not seen symptom of chemical damage from the dispenser to the maturing stage, to wheat safety.The preventive effect of weeds reached more than 70% in 20 days, reached more than 90% in 60 days, along with the increase of dosage; Preventive effect obviously strengthens, and a dispenser can be controlled the weeds in the crop whole growth phase, and not only herbicidal effect is remarkable; And environmentally friendly, second stubble crop there is not influence.
Compared with prior art, complex weedicide according to the invention can be prevented and kill off broad leaved weed, can prevent and kill off grassy weed again, to wheat safety, and succession crop is not had influence, has a good application prospect.
Embodiment
The invention discloses a kind of mixed herbicide of wheat after seedling that comprises thifensulfuronmethyl and two kinds of active components of alkynes grass ester, those skilled in the art can use for reference this paper content, suitably improve technological parameter and realize.Special needs to be pointed out is that all similarly replace and change apparent to those skilled in the art, they all are regarded as and are included in the present invention.Product of the present invention and application are described through preferred embodiment; The related personnel obviously can change or suitably change and combination methods and applications as herein described in not breaking away from content of the present invention, spirit and scope, realizes and use technology of the present invention.
Below in conjunction with embodiment, further set forth the present invention:
Embodiment 1: the oil-suspending agent (thifensulfuronmethyl: alkynes grass ester=1: 2) for preparing complex weedicide according to the invention
12% thifensulfuronmethyl alkynes grass ester oil suspending agent, 12% is meant that thifensulfuronmethyl and two kinds of active components of alkynes grass ester account for the percentage of gross weight.Get 4kg flufenacet thifensulfuronmethyl, 8kg alkynes grass ester, 8kg Pluronic125, the 5kg propane diols, the 0.5kg xanthans, the 1kg methylated vegetable oil, water complements to 100kg.Pass through abundant mixing preparation, ball mill grinding, adjust, be packaged to be oil-suspending agent.
Embodiment 2: the wetting powder (thifensulfuronmethyl: alkynes grass ester=1: 1) for preparing complex weedicide according to the invention
50% thifensulfuronmethyl alkynes grass ester wetting powder, 50% is meant that thifensulfuronmethyl and two kinds of active components of alkynes grass ester account for the percentage of gross weight.Get the 25kg thifensulfuronmethyl, 25kg alkynes grass ester, 4kg dispersant NNO, 3kg wetting agent K12, the white carbon black of 4kg, precipitated calcium carbonate complements to 100kg.Through fully mixing, comminution by gas stream, mixing, obtain wetting powder.
Embodiment 3: the water dispersible granules (thifensulfuronmethyl: alkynes grass ester=1: 3) for preparing complex weedicide according to the invention
60% thifensulfuronmethyl alkynes grass ester water dispersible granules, 60% is meant that thifensulfuronmethyl and two kinds of active components of alkynes grass ester account for the percentage of gross weight.Get the 15kg thifensulfuronmethyl, 45kg alkynes grass ester, 7kg D-425,5kg EFW, 5kg ammonium sulfate, the 2kg polyethylene glycol, kaolin supplies 100%, obtains water dispersible granules through fully mixing, comminution by gas stream, mixing, granulation, drying and screening.
Embodiment 4: thifensulfuronmethyl and alkynes grass ester cauline leaf are handled the indoor determination of activity of synergy
1, test objective
Under greenhouse experiment; Adopt the pot experiment method; The herbicidal effect of research thifensulfuronmethyl, alkynes grass ester binary built, and the synergy type after using with the two different proportion of co-toxicity coefficient method evaluation of Sun Yunpei are for thifensulfuronmethyl and careless rationally being mixed of ester of alkynes provide scientific basis.
2, experimental condition
2.1 supply to study the thing wheat breed: Anhui wheat 33
The seed 2.2 gather in confession examination weeds descurainia sophia (l.) webb ex prantl (Descurainia sophia (L.) Schur), clearvers (Galium aparine L.), wartwort (Euphorbia helioscopia L.), wild oat (Avena fatua L.) last one year of field, germination rate is more than 85%).
2.3 the cultivation of experimental condition and examination material
In the illumination cultivation chamber, the make an experiment cultivation of material, temperature 15-20 ℃.Choosing diameter is 15cm, highly is the vinyon basin alms bowl of 15cm, and the permeable hole of 1cm diameter is beaten in the bottom of basin alms bowl.Permeable hole covers with double-deck filter paper, and soil is soaked into clear water from the bottom in the high 10cm of loam to the alms bowl place that the preparation in advance of packing in the alms bowl was sterilized.During test, every kind of weed seed 30-40 grain is evenly put into basin, earthing 0.5cm should replenish the required moisture of growth between the weeds culture period.
2.4 other condition
With the regular moisturizing of mode (not watering in 2 days behind the medicine) of bottom infiltration, keep soil moisture.
3 experimental scheme
3.1 medicament
3.1.1 supply the reagent agent
The former medicine of 95% thifensulfuronmethyl (Anhui Fengle Agricultural Co., Ltd);
The 95% alkynes grass former medicine of ester (Lier Chemical Co., Ltd).
3.1.2 supply the preparation of reagent agent soup
Take by weighing quantitative former medicine with electronic balance, add an amount of emulsifier, use acetone solution, with 0.1% soil temperature 80 aqueous solution above-mentioned former medicine is diluted to desired concn at last.
3.1.3 experimental scheme
3.1.3.1 the synergy of thifensulfuronmethyl and alkynes grass ester
The grass ester list agent of thifensulfuronmethyl, alkynes and 5 thifensulfuronmethyls are established 5 dosage respectively with alkynes grass ester mixture preparation, and said ratio is the active component weight ratio of thifensulfuronmethyl and the careless ester of alkynes.Other establishes blank, and repetition 4 times is handled in each test.Handle drug dose and see table 1 for details.
Table 1 test is handled and test level (concentration ga.i./mu)
3.2 application method
3.2.1 application method
Handle in 3 leaf phases of wheat, the spraying of weeds 2-4 leaf phase cauline leaf.The spray medicine adopts the indoor overhead traveling crane formula spray testing device of adjustable speed, the conventional spray method in simulation field.Shower nozzle is a Fan spray head, and model is the Teejer8002E type, 40 kilograms/mu of spray values.0.5 meter of spray height, 0.7 meter of spraying swath, leg speed 0.224 meter per second.Atomisation pressure 2.0 MPas, 697 liters/minute of flows.
3.2.2 spraying time and number of times
Tested in the wheat 3-5 leaf phase and carry out reagent spray processing, dispenser 1 time.
4 investigation methods
The symptom of being injured of detail record wheat and weeds after the dispenser, 20d behind the medicine carries out fresh weight and measures, and compares with control treatment, calculates the fresh weight preventive effect.
4.1 synergy assay method
Synergy type after result of the test is used with the co-toxicity coefficient method evaluation of Sun Yunpei.According to SUN, Y-P (Sun Yunpei) method is calculated its actual toxicity index, the theoretical toxicity index of mixture, co-toxicity coefficient.With the concentration logarithm is X, and damage by disease and insect preventive effect probit value is Y, asks regression equation.
Actual toxicity index=standard medicament LD
50The LD of/mixture
50* 100
Theoretical toxicity index=∑ (supplying the toxicity index * percentage of this medicament active ingredient in mixture of reagent agent)
The actual toxicity index of co-toxicity coefficient=mixture/theoretical toxicity index * 100
Be the standard medicament with the thifensulfuronmethyl in the test.
Criterion: co-toxicity coefficient＜80 are antagonism, are summation action between 80-120, and＞120 are synergistic effect.
5 results and analysis
5.1 the synergy of thifensulfuronmethyl and alkynes grass ester
5.1.1 thifensulfuronmethyl and alkynes grass ester are mixed to the fresh weight preventive effect of weeds, the result sees table 2.
Table 2 thifensulfuronmethyl and alkynes grass ester is mixed behind the medicine 20d to the fresh weight preventive effect of weeds
Control efficiency is the mean value of four data in the table.
5.1.2 thifensulfuronmethyl and alkynes grass ester are mixed to the synergy of weeds
Can be known by table 2: medicament is to toxic action situation and the preventive effect of weeds.Calculate its virulence regression equation, LD separately through formula
50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient.List in table 3.
Table 3: thifensulfuronmethyl and alkynes grass ester are mixed to the synergy of weeds
| Handle | Regression equation | Correlation coefficient | LD 50 | Actual | Theoretical | Coefficient of synergism |
| Toxicity index | Toxicity index | |||||
| A | Y＝0.9479x+6.2917 | 0.9913 | 0.0434 | 100 | / | / |
| B | Y＝0.8823x+5.9392 | 0.9913 | 0.0862 | 50.35 | / | / |
| C | Y＝1.1248x+6.5167 | 0.9908 | 0.0448 | 98.64 | 83.45 | 118.20 |
| D | Y＝1.1283x+6.6778 | 0.9917 | 0.0326 | 133.13 | 75.18 | 177.08 |
| E | Y＝1.3355x+7.2464 | 0.9930 | 0.0208 | 208.65 | 66.90 | 311.88 |
| F | Y＝1.2289x+6.9096 | 0.9947 | 0.0279 | 155.56 | 62.76 | 247.86 |
| G | Y＝1.1351x+6.5894 | 0.9968 | 0.0398 | 109.05 | 60.28 | 180.91 |
Can know that by test the co-toxicity coefficient of handling C, D, E, F, G is respectively: 118.20,177.08; 311.88,247.86,180.91; Wherein D, E, F, G co-toxicity coefficient reach remarkable synergistic effect all obviously greater than 120, and the co-toxicity coefficient of particularly handling E is maximum.
5.1.3 conclusion (of pressure testing)
Can know that through test thifensulfuronmethyl, alkynes grass ester are mixed in 1: 1～1: 4 ratio, and annual dicotyledonous weeds is all had significant synergies, ratio was mixed in particularly 1: 2～1: 3, and synergistic effect is more obvious.
6 overall merits
Measure the result by above synergy and show, the two is better with the composite effect of 1: 1～1: 4 ratio for thifensulfuronmethyl and alkynes grass ester, wherein with 1: 2 composite best results of left and right sides ratio.
Embodiment 5: the composite cauline leaf of thifensulfuronmethyl alkynes grass ester is handled the safety determination test to wheat
1, test objective:
Under greenhouse experiment, adopt the pot experiment method, research thifensulfuronmethyl, alkynes grass ester binary built cauline leaf are handled the safety to wheat, for careless rationally being mixed of ester of thifensulfuronmethyl and alkynes provides scientific basis.
2, experimental condition
2.1 supply to study the thing wheat breed: Anhui wheat 33
2.2 supply examination weeds descurainia sophia (l.) webb ex prantl (Descurainia sophia (L.) Schur), clearvers (Galium aparine L.), wartwort (Euphorbia helioscopia L.), wild oat (Avena fatua L.) (last one year the field seed of gathering, germination rate is more than 85%).
2.3 the cultivation of experimental condition and examination material
In the illumination cultivation chamber, the make an experiment cultivation of material, temperature 15-25 ℃.Choosing diameter is 15cm, highly is the vinyon basin alms bowl of 15cm, and the permeable hole of 1cm diameter is beaten in the bottom of basin alms bowl.Permeable hole covers with double-deck filter paper, and soil is soaked into clear water from the bottom in the high 10cm of loam to the alms bowl place that the preparation in advance of packing in the alms bowl was sterilized.During test, 20, every kind weed seed 30-40 of wheat seed grain is evenly put into basin earthing 0.5cm, put into the greenhouse and cultivate (15-25 ℃), should replenish the required moisture of growth between wheat seedling and weeds culture period.Stay the healthy and strong seedling of 10 strains after all sprouting, treat that wheat seedling length to 3～4 leaves and weeds grow to handle to dispenser in 3～5 o'clock.
2.4 other condition
With the regular moisturizing of mode (not watering in 2 days behind the medicine) of bottom infiltration, keep soil moisture.
3 experimental scheme
3.1 medicament
3.1.1 supply the reagent agent
The former medicine of 95% thifensulfuronmethyl (Anhui Fengle Agricultural Co., Ltd);
The 95% alkynes grass former medicine of ester (Lier Chemical Co., Ltd).
3.1.2 supply the preparation of reagent agent soup
Take by weighing quantitative former medicine with electronic balance, add an amount of emulsifier, use acetone solution, with 0.1% soil temperature 80 aqueous solution above-mentioned former medicine is diluted to desired concn at last.
3.2 application method
3.2.1 application method
Handle in 3 leaf phases of wheat, the spraying of weeds 2-4 leaf phase cauline leaf.The spray medicine adopts the indoor overhead traveling crane formula spray testing device of adjustable speed, the conventional spray method in simulation field.Shower nozzle is a Fan spray head, and model is the Teejer8002E type, 40 kilograms/mu of spray values.0.5 meter of spray height, 0.7 meter of spraying swath, leg speed 0.224 meter per second.Atomisation pressure 2.0 MPas, 697 liters/minute of flows.
3.2.2 spraying time and number of times
Tested in the 3 leaf phases of wheat and carry out reagent spray processing, dispenser 1 time.
4 investigation and computational methods
4.1 crop investigation
After the dispenser, investigation is respectively handled wheat and is had or not symptom of chemical damage, if then detail record symptom of chemical damage, grade are arranged, and behind the medicine 20 days, measure and respectively handle the wheat fresh weight, calculate the fresh weight inhibiting rate, with of the safety of clear and definite test medicine to wheat.
4.2 weeds investigation
The symptom of being injured of detail record weeds (like growth inhibition, chlorosis, deformity etc.) after the dispenser, behind medicine 20 days, weeds acrial part fresh weight was respectively handled in weighing, calculated the fresh weight preventive effect of weeds.
4.3 computational methods
With DPS software the logarithm value of drug dose and the probability value of wheat fresh weight inhibiting rate are carried out regression analysis, the dosage ED when calculating correlation coefficient and suppressing crop 10%
10, and suppress weeds 90%ED
90, obtain selectivity index.
Selectivity index=ED
10/ ED
90
5 results and analysis
5.1 thifensulfuronmethyl alkynes grass ester cauline leaf is handled the safety to wheat
The safety evaluatio standard is seen table 4, observes in 3 days after the dispenser, and thifensulfuronmethyl alkynes grass ester high concentration 3600mg/kg handles indivedual wheat lobus cardiacus distortions, and growth is suppressed, and it is normal basically that low concentration is handled wheat growth; After the dispenser 7-12 days, it is normal that low concentration is handled the wheat growing way, and 3600mg/kg handles wheat and also slowly recovers.20 days 50% thifensulfuronmethyl alkynes grass ester WP see table 5 to the inhibitory action of wheat after the dispenser.
Table 4 activity of weeding and crop safety ocular estimate evaluation criterion
Table 5 50% thifensulfuronmethyl alkynes grass ester WP is to the inhibitory action of wheat
Table 6 50% thifensulfuronmethyl alkynes grass ester WP is to the fresh weight preventive effect of weeds
Can know toxic action situation and the preventive effect of this medicament by table 6, calculate its virulence regression equation, LD respectively through formula to weeds
50, list in table 7.
Table 7: virulence regression equation and LD
50
| Handle | Regression equation | Correlation coefficient | LD 50 | 95% confidence interval |
| A | Y＝-0.2323+2.3570x | 0.9925 | 165.9346 | 143.8011～191.4749 |
Can be known by table 7: the LD50 of 50% thifensulfuronmethyl alkynes grass ester WP is: 165.9346,95% confidence intervals are 143.8011～191.4749.
5.2 thifensulfuronmethyl alkynes grass ester cauline leaf is handled the selectivity index to wheat and weeds
By table 5, table 6, try to achieve the ED that suppresses wheat growth 10% through DPS software
10=2182.5620, the ED of inhibition weed growth 90%
90=561.1078, selectivity factor is 2182.5620/561.1078=3.89＞2, thinks that this medicament has obvious selectivity, can carry out field control effectiveness test.
6 overall merits
6.1 this result of the test shows that thifensulfuronmethyl alkynes grass ester cauline leaf treatment of high concentration is handled and can be caused wheat yellow, indivedual plant distortion to wheat, it is normal that other concentration is handled wheat growth.
6.2 can know that through Toxicity Determination thifensulfuronmethyl alkynes grass ester has good control efficiency to weeds.
Embodiment 6: complex weedicide field control effectiveness test according to the invention
Complex weedicide according to the invention shows through the field control effectiveness test in 2 years; Wheat period of seedling establishment before the winter, weeds 1-5 leaf does not wait the phase, utilizes 60% thifensulfuronmethyl alkynes grass ester of the present invention (15% thifensulfuronmethyl+45% alkynes grass ester) water dispersible granules (WG) dosage 10,12.5,15,25 gram/mus; Converting water sprays for 40 kilograms/mu; 20,60 days and maturing stage range estimation wheat safety and weeds preventive effect, surveyed at preventive effect result such as following table in 20,60 days:
Through range estimation, wheat is not seen symptom of chemical damage from the dispenser to the maturing stage, to wheat safety.Preventive effect 8 gram/mus to broad leaved weed reached more than 70% in 20 days; Reached more than 90% in 60 days, along with the increase of dosage, preventive effect obviously strengthens; Can good herbicidal effect all be arranged to broad leaved weed and monocotyledon weed at wheat paddock 10 gram/mus; Compare with wherein a kind of active ingredient of independent use, enlarged and killed the grass spectrum, broad leaved weed and monocotyledon weed are had obvious synergistic effect.A dispenser can be controlled the weeds in the crop whole growth phase, and not only herbicidal effect is remarkable, and environmentally friendly, and second stubble crop is not had influence, and is little to the pollution of environment, to people, animal, birds and beneficial organism safety, helps keeping ecological balance.In addition, weed killer herbicide of the present invention adopts physical method processing, and production technology is simple, and three-waste free discharge in the production process has no adverse effects to ecotope.It is the desirable complex weedicide of present control efficiency.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (5)
1. a mixed herbicide of wheat after seedling is characterized in that, comprises thifensulfuronmethyl and alkynes grass ester, and the weight ratio of thifensulfuronmethyl and alkynes grass ester is 1: 1～1: 4.
2. complex weedicide according to claim 1, as preferably, the weight ratio of thifensulfuronmethyl and alkynes grass ester is 1: 1.5～1: 3.
3. according to claim 1,2 described complex weedicides, more preferably, the weight ratio of thifensulfuronmethyl and alkynes grass ester is 1: 2.
4. according to claim 1,2,3 described complex weedicides, it is characterized in that the quality percentage composition of thifensulfuronmethyl and alkynes grass ester is 5～85% of a said complex weedicide.
5. according to each described complex weedicide of claim 1-4, it is characterized in that said complex weedicide is missible oil, suspending agent, oil-suspending agent, wetting powder, water dispersible granules (dry suspending agent).
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| CN105660259A (en) * | 2016-02-17 | 2016-06-15 | 山东省农业科学院植物保护研究所 | Method for preventing and treating aegilops tauschii cosson serving as distress weeds in wheat field |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103210947A (en) * | 2013-05-10 | 2013-07-24 | 步康明 | Wheatfield weed killer composition containing flucarbazone-sodium |
| CN105360149A (en) * | 2015-07-22 | 2016-03-02 | 南京华洲药业有限公司 | Composite weeding composition containing clodinafop-propargyl and ethoxysulfuron and application of composite weeding composition |
| CN105123731A (en) * | 2015-09-24 | 2015-12-09 | 山东潍坊润丰化工股份有限公司 | Thifensulfuron methyl and clodinafop-propargyl water dispersible granule and preparation method and application thereof |
| CN105123731B (en) * | 2015-09-24 | 2018-05-25 | 山东潍坊润丰化工股份有限公司 | A kind of thifensulfuronmethyl and the water dispersible granules of clodinafop-propargyl and its preparation method and application |
| CN105660259A (en) * | 2016-02-17 | 2016-06-15 | 山东省农业科学院植物保护研究所 | Method for preventing and treating aegilops tauschii cosson serving as distress weeds in wheat field |
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Application publication date: 20120613 |