CN108124893A

CN108124893A - A kind of ternary weeding composition containing diflufenican

Info

Publication number: CN108124893A
Application number: CN201810105728.9A
Authority: CN
Inventors: 时晓磊; 马强; 冯建雄; 张仙
Original assignee: Shaanxi Sunger Road Bio Science Co Ltd
Current assignee: Shaanxi Sunger Road Bio Science Co Ltd
Priority date: 2018-02-02
Filing date: 2018-02-02
Publication date: 2018-06-08

Abstract

Ternary weeding composition and its application the invention discloses a kind of fluorine-containing pyrrole acyl grass amine, effective active composition are by the first active constituent fluorine pyrrole acyl grass amine, the second active constituent florasulam, third active constituent pyraflufen-ethyl composition, the mass ratio of three kinds of active constituents（1~90）：（1~90）：（1~90）, preferably（1~60）：（1~60）：（1~60）, further preferably（1~30）：（1~30）：（1~30）, most preferably 15:2:2.This composition can be configured to the suspending agent agriculturally allowed, dispersible oil suspending agent, wettable powder, water dispersible granules.Instant component is reasonable, it is good to broad leaved weed herbicidal effect in wheatland, and its activity and herbicidal effect are not the simple superposition of each component activity, compared with existing single formulation or binary built preparation, in addition to significant herbicidal effect, and there is significant synergistic effect, dosage is reduced, herbicide controlling spectrum augmentation, cost accounting are low.

Description

A kind of ternary weeding composition containing diflufenican

Technical field

The present invention relates to a kind of ternary weeding composition containing diflufenican, by active constituent diflufenican, double fluorine Sulphur grass amine and pyraflufen-ethyl and auxiliary agent composition, belong to technical field of compounded pesticide.

Background technology

Diflufenican, English name diflufenican, chemical name are：N- (2,4 difluorobenzene base) -2- (3- tri- Methyl fluoride phenoxy group) -3- pyridine anilides.Diflufenican application before and after weeds germinate can form the medicine of anti-leaching in native table Soil layer keeps activity in crop entire growth period.When weed germination can absorb medicament, this agent by medicine soil layer young shoot or root system With herxheimer-liked reaction effect is inhibited, absorb carotenoid content in the weeds plant of medicament and decline, cause leaf green Element is destroyed, membranolysis, and weeds then show as young shoot decoloration or white, and last whole strain is wilted dead.Wheat, rice, Most of broad leaved weed in certain legumes (such as white plumage hyacinth bean and spring sowing pea), carrot, sunflower the crop fields.

Florasulam, English name florasulam, chemical name are：Bis- fluoro- 5- ethyoxyls -8- fluorine of 2', 6'- [1,2,4] triazole [1,5-c] pyrimidine -2- sulfonanilides.Florasulam is triazolopyrimidine sulfonamides superelevation effective herbicide, For acetolactate synthestase（ALS）Inhibitor, be inner-adsorption conduction-type herbicide, can conduct to weeds complete stool, thus herbicide Thoroughly, it will not recur.Even efficacy stability at low temperature at 2 DEG C, still ensures that stable drug effect.Double fluorine sulphur grass press herbicide Spectrum is wide, can prevent and kill off the most broad leaved weed of wheatland, including the difficult anti-weeds such as clearvers, corn gromwell, and to being most difficult to anti-pool in wheatland Paint has extraordinary inhibiting effect.

Pyraflufen-ethyl, English name pyraflufen-ethyl, chemical name are the chloro- 5- of 2- (the chloro- 5- difluoromethoxies of 4- Base -1- methylpyrazole -3- bases) -4- fluorophenoxyacetate ethyl esters.The medicine is contact phenylpyrazole class postemergence weed control Agent, mechanism of action are 4 oxidizing ferment of protoporphyrin inhibited in plant, and the difference for being absorbed and being deposited to medicine using wheat and weeds The metabolin of different activities produced by different achievees the effect that selectively to prevent wheatland weeds.

Applicant has found through retrieval, at present still without the group of diflufenican, florasulam and pyraflufen-ethyl three compounding Conjugate patent.Simultaneously by long-term experiment it was unexpectedly observed that by the different diflufenican of the mechanism of action, florasulam and Pyraflufen-ethyl compounds, and has apparent synergistic effect to shepherd's purse, Descurainia sophia, clearvers, Veronica, chickweed, corn gromwell, significantly improves To the control effect of wheatland broad leaved weed, herbicide controlling spectrum is expanded, reduces dosage, reduces cost accounting.

Invention content

The purpose of the present invention is to provide a kind of component is reasonable, drug cost is low, and synergistic effect is notable, and herbicidal effect is good, The ternary weeding composition containing diflufenican of broad weed-killing spectrum.

Another object of the present invention is to provide the ternary weeding composition preparation formulation containing diflufenican.

It is still another object of the present invention to provide application of the above-mentioned composition on prevention wheatland broad leaved weed.

The defects of in order to overcome existing single formulation or two-spot complex preparation, the technical solution of Herbicidal combinations of the present invention are It solves in this way：

A）First active constituent diflufenican；

B）Second active constituent florasulam；

C）Third active constituent pyraflufen-ethyl.

First active constituent, the second active constituent and third active constituent mass ratio are（1~90）：（1~90）：（1~ 90）, preferably（1~60）：（1~60）：（1~60）, further preferably（1~30）：（1~30）：（1~30）, most preferably It is 15:2:2.

A kind of ternary weeding composition containing diflufenican of the present invention is according to well known to those skilled in the art of the present technique The preparation formulation that method can be prepared is suspending agent, dispersible oil suspending agent, wettable powder, water dispersible granules.

To suspending agent, workable auxiliary agent has：Dispersant such as polycarboxylate, lignosulfonates, alkyl naphthalene formaldehyde condensation Object sulfonate, alkylphenol-polyethenoxy base ether phosphate, alkylphenol-polyethenoxy base ether sulfonate, phenethyl phenol polyoxyethylene groups Ether phosphate, alkyl polyoxyethylene ether sulfonate, polyoxyethylene polyoxypropylene base ether block copolymers, pull open powder, dodecyl It is one or more in polyoxyethylene ether phosphate etc.；Wetting agent such as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulfate, Phenethyl phenol polyoxyethylene groups ether phosphate, alkyl sulfate, alkylsulfonate, alkylnaphthalene sulfonate, alkylphenol-formaldehyde resin It is one or more in polyoxyethylene ether, triphenoethyl benzene phenol polyoxyethylene polyoxypropylene block polymer etc.；Thickener such as Huang One kind in virgin rubber, polyvinyl alcohol, bentonite, aluminium-magnesium silicate, carboxymethyl cellulose, carboxyethyl cellulose, methylcellulose etc. It is or a variety of；It is one or more in preservative such as formaldehyde, benzoic acid, sodium benzoate, potassium sorbate, isothiazolinone；Defoaming Agent such as silicone oil, silicone compound, C10-20 saturated fat acid compounds, C8-10 aliphatic alcohols, hexanol, butanol, octanol etc. In it is one or more；In antifreezing agent such as ethylene glycol, propylene glycol, glycerine, polyethylene glycol, sorbierite, urea, inorganic salts It is one or more；Water is deionized water.

To dispersible oil-suspending agent, workable auxiliary agent has：Dispersant such as polycarboxylate, lignosulfonates, alkylnaphthalene Sulfonate（Dispersing agent NNO）、TERSPERSE 2020（Huntsman Corporation of U.S. HUNTSMAN produces, alkyl naphthalene sulfonic acid salt）Deng In it is one or more；Emulsifier such as BY（Castor oil polyoxyethylene ether）Serial emulsifier（BY-110、BY-125、BY-140）、 Nongru-700 #（Alkyl phenol formaldehyde resin polyoxyethylene ether）, agriculture breast 2201, this disk -60#（Sorbitan monostearate）, spit Temperature -60#（Sorbitan monostearate polyoxyethylene ether）, agriculture breast 1601#（Phenethyl phenol polyoxyethylene polyoxypropylene Ether）、TERSPERSE 4894（Huntsman Corporation of the U.S. produces）It is one or more in；Wetting agent such as alkylphenol-polyethenoxy Base ether formaldehyde condensation products sulfate, alkyl phenol polyoxyethylene ether phosphate, phenethyl phenol polyoxyethylene groups ether phosphate, alkyl sulfide Hydrochlorate, alkylsulfonate, naphthalene sulfonate, TERSPERSE 2500（Huntsman Corporation of the U.S. produces）It is one or more in； It is one or more in thickener such as white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate；Antifreezing agent such as ethylene glycol, the third two It is one or more in alcohol, glycerine, urea, inorganic salts such as sodium chloride；Decentralized medium for example soybean oil, rapeseed oil, small wheat oil, It is one or more in methyl oleate, diesel oil, machine oil, mineral oil etc..

To wettable powder, workable auxiliary agent has：Dispersant such as polycarboxylate, lignosulfonates, polyoxyethylene gather Oxypropylene group ether block copolymers, alkyl naphthalene formaldehyde condensate sulfonates, alkylphenol-polyethenoxy base ether phosphate, poly alkyl alcohol It is one or more in ethylene oxide ether phosphate, alkylphenol-polyethenoxy base ether sulfonate etc.；Wetting agent such as alkyl sulfate, alkane It is one or more in base sulfonate, alkylnaphthalene sulfonate etc.；Filler such as ammonium sulfate, urea, sucrose, glucose, diatomite, height It is one or more in ridge soil, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, clay etc..

To water dispersible granules, workable auxiliary agent has：Dispersant such as polycarboxylate（TERSPERSE 2700、T36、GY- D06 etc.）, it is lignosulfonates, one or more in alkylnaphthalene sulfonate etc.；Wetting agent such as alkyl sulfate, alkyl sulfonic acid It is one or more in salt, naphthalene sulfonate etc.；Disintegrant such as ammonium sulfate, sodium sulphate, polyvinylpyrrolidone, starch and its derivative It is one or more in object, bentonite etc.；Binding agent such as starch, glucose, polyvinyl alcohol, polyethylene glycol, carboxymethyl cellulose It is one or more in sodium, sucrose etc.；Filler such as diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, clay It is one or more in.

Instant component is reasonable, and herbicidal effect is good, and drug cost is low, and its activity and herbicidal effect are not each component activity Simple superposition, but have significant synergistic effect, wheatland broad leaved weed herbicide controlling spectrum can be expanded, delaying drug resistance reduces dosage, Reduce cost accounting.The present invention has wheatland shepherd's purse, Descurainia sophia, clearvers, Veronica, chickweed, corn gromwell etc. anti-well Control effect.

Specific embodiment

Illustrate diflufenican, florasulam and pyraflufen-ethyl compounding to wheatland broad-leaved below by Toxicity Determination The synergistic effect of weeds.

In order to prevent wheatland broad leaved weed, we have been carried out mutually multiple with diflufenican, florasulam and pyraflufen-ethyl The synergy research matched, test method reference《In People's Republic of China's pesticides of agricultural industry criteria NY/T1155.4-2006 room The 4th part of bioassay test criterion herbicide：Active determination test cauline leaf spray-on process》With《People's Republic of China's agricultural The 7th part of the farm-chemical indoor determination test rules of professional standard NY/T1155.7-2006 herbicide：The joint of mixture is made With measure》.

Subjects are wheatland broad leaved weed：Shepherd's purse（Capsella bursa-pastoris）, Descurainia sophia （Descurainia sophia）, clearvers（Galium aparine）, Veronica（Veronica didyma）, chickweed （Stellaria media）, corn gromwell（Buglossoides arvense）.

Single dose and each compound drug are set 5 various concentration gradients by the test medicine that active compound is configured to need first （On the basis of pilot study result, according to dosages distribution difference, concentration gradient setting is also different, prevent and kill off rate 5%~ It is set in the range of 90% by geometric progression）.If clear water compares, it is repeated 4 times.Wheatland broad leaved weed is in the normal growth phase, from low Dosage carries out spraying treatment respectively to high dose.Processing, which is placed in greenhouse, cultivates observation, the moisturizing in a manner of the bottom infiltrating irrigation of basin alms bowl.

21 days after the processing fresh weight preventive effects for calculating each chemicals treatment, pass through the probit value of preventive effect and the logarithm of series concentration Between linear regression analysis, the ED of each medicament is obtained₅₀Value calculates the co-toxicity coefficient of mixture with the abundant methods of Sun Yun（CTC）, come with this Evaluate activity of the reagent agent to wheatland broad leaved weed.

Co-toxicity coefficient CTC >=120 of complex preparation show as synergistic effect；CTC≤80 show as antagonism；80 ＜ CTC ＜ 120 show as summation action.

1 diflufenican of table, florasulam combine the Toxicity Determination to shepherd's purse with pyraflufen-ethyl

Chemicals treatment	ED50（Ga.i./mu）	ATI	TTI	CTC
					Diflufenican（A）	3.12	100.00	-	-
Florasulam（B）	0.51	611.76	-	-
					Pyraflufen-ethyl（C）	0.25	1248.00	-	-
A:B:C=60:90:40	0.32	975.00	584.10	166.92
					A:B:C=90:40:30	0.45	693.33	443.19	156.44
A:B:C=50:20:10	0.56	557.14	371.44	149.99
					A:B:C=30:1:20	0.34	917.65	560.23	163.80
A:B:C=40:30:50	0.28	1114.29	706.27	157.77
					A:B:C=15:2:2	0.64	487.50	274.71	177.46
A:B:C=20:80:70	0.28	1114.29	813.54	136.97
					A:B:C=1:50:60	0.23	1356.52	951.07	142.63
A:B:C=10:70:80	0.21	1485.71	897.90	165.47
					A:B:C=70:10:1	1.25	249.60	177.35	140.74
A:B:C=80:60:90	0.32	975.00	682.72	142.81

2 diflufenican of table, florasulam combine the Toxicity Determination to Descurainia sophia with pyraflufen-ethyl

Chemicals treatment	ED50（Ga.i./mu）	ATI	TTI	CTC
					Diflufenican（A）	2.94	100.00	-	-
Florasulam（B）	0.53	554.72	-	-
					Pyraflufen-ethyl（C）	0.28	1050.00	-	-
A:B:C=60:90:40	0.43	683.72	515.39	132.66
					A:B:C=90:40:30	0.54	544.44	391.80	138.96
A:B:C=50:20:10	0.62	474.19	332.43	142.64
					A:B:C=30:1:20	0.45	653.33	481.47	135.70
A:B:C=40:30:50	0.32	918.75	609.51	150.74
					A:B:C=15:2:2	0.74	397.30	247.86	160.29
A:B:C=20:80:70	0.28	1050.00	705.16	148.90
					A:B:C=1:50:60	0.25	1176.00	818.34	143.71
A:B:C=10:70:80	0.24	1225.00	773.94	158.28
					A:B:C=70:10:1	1.21	242.98	167.87	144.74
A:B:C=80:60:90	0.35	840.00	590.36	142.29

3 diflufenican of table, florasulam combine the Toxicity Determination to clearvers with pyraflufen-ethyl

Chemicals treatment	ED50（Ga.i./mu）	ATI	TTI	CTC
					Diflufenican（A）	2.63	100.00	-	-
Florasulam（B）	0.45	584.44	-	-
					Pyraflufen-ethyl（C）	0.21	1252.38	-	-
A:B:C=60:90:40	0.32	821.88	572.08	143.66
					A:B:C=90:40:30	0.37	710.81	437.18	162.59
A:B:C=50:20:10	0.53	496.23	365.16	135.89
					A:B:C=30:1:20	0.32	821.88	561.41	146.39
A:B:C=40:30:50	0.23	1143.48	701.27	163.06
					A:B:C=15:2:2	0.54	487.04	272.30	178.86
A:B:C=20:80:70	0.21	1252.38	802.48	156.06
					A:B:C=1:50:60	0.19	1384.21	941.13	147.08
A:B:C=10:70:80	0.21	1252.38	888.13	141.01
					A:B:C=70:10:1	1.05	250.48	174.03	143.92
A:B:C=80:60:90	0.25	1052.00	677.31	155.32

4 diflufenican of table, florasulam combine the Toxicity Determination to Veronica with pyraflufen-ethyl

Chemicals treatment	ED50（Ga.i./mu）	ATI	TTI	CTC
					Diflufenican（A）	3.46	100.00	-	-
Florasulam（B）	0.38	910.53	-	-
					Pyraflufen-ethyl（C）	0.23	1504.35	-	-
A:B:C=60:90:40	0.31	1116.13	779.59	143.17
					A:B:C=90:40:30	0.42	823.81	565.95	145.56
A:B:C=50:20:10	0.52	665.38	478.18	139.15
					A:B:C=30:1:20	0.34	1017.65	666.62	152.66
A:B:C=40:30:50	0.26	1330.77	887.78	149.90
					A:B:C=15:2:2	0.62	558.06	333.14	167.51
A:B:C=20:80:70	0.21	1647.62	1059.69	155.48
					A:B:C=1:50:60	0.19	1821.05	1224.21	148.75
A:B:C=10:70:80	0.21	1647.62	1156.78	142.43
					A:B:C=70:10:1	1.13	306.19	217.40	140.84
A:B:C=80:60:90	0.3	1153.33	860.97	133.96

5 diflufenican of table, florasulam combine the Toxicity Determination to chickweed with pyraflufen-ethyl

Chemicals treatment	ED50（Ga.i./mu）	ATI	TTI	CTC
					Diflufenican（A）	3.29	100.00	-	-
Florasulam（B）	0.47	700.00	-	-
					Pyraflufen-ethyl（C）	0.26	1265.38	-	-
A:B:C=60:90:40	0.32	1028.13	629.55	163.31
					A:B:C=90:40:30	0.45	731.11	468.51	156.05
A:B:C=50:20:10	0.58	567.24	395.67	143.36
					A:B:C=30:1:20	0.42	783.33	568.78	137.72
A:B:C=40:30:50	0.31	1061.29	735.58	144.28
					A:B:C=15:2:2	0.69	476.81	285.83	166.82
A:B:C=20:80:70	0.28	1175.00	862.22	136.28
					A:B:C=1:50:60	0.23	1430.43	1000.21	143.01
A:B:C=10:70:80	0.24	1370.83	945.19	145.03
					A:B:C=70:10:1	1.35	243.70	188.46	129.31
A:B:C=80:60:90	0.33	996.97	712.54	139.92

6 diflufenican of table, florasulam combine the Toxicity Determination to corn gromwell with pyraflufen-ethyl

Chemicals treatment	ED50（Ga.i./mu）	ATI	TTI	CTC
					Diflufenican（A）	3.34	100.00	-	-
Florasulam（B）	0.54	618.52	-	-
					Pyraflufen-ethyl（C）	0.27	1237.04	-	-
A:B:C=60:90:40	0.38	878.95	584.99	150.25
					A:B:C=90:40:30	0.51	654.90	442.82	147.89
A:B:C=50:20:10	0.62	538.71	371.76	144.91
					A:B:C=30:1:20	0.45	742.22	556.06	133.48
A:B:C=40:30:50	0.27	1237.04	703.40	175.87
					A:B:C=15:2:2	0.68	491.18	274.27	179.09
A:B:C=20:80:70	0.27	1237.04	812.20	152.31
					A:B:C=1:50:60	0.23	1452.17	948.18	153.15
A:B:C=10:70:80	0.27	1237.04	895.37	138.16
					A:B:C=70:10:1	1.25	267.20	178.05	150.07
A:B:C=80:60:90	0.31	1077.42	680.19	158.40

The Toxicity Determination result shows：Diflufenican, florasulam and pyraflufen-ethyl according to（1~90）：（1~90）：（1 ~90）Ratio is used with, has preferable poison to wheatland broad leaved weed shepherd's purse, Descurainia sophia, clearvers, Veronica, chickweed, corn gromwell Power, synergistic effect is apparent, and especially ratio is 15:2:When 2, synergistic effect is the most apparent.

In order to which the present invention is better described, the content of present invention is described further with reference to embodiment, in formula Percentage is weight percentage.

Example of formulations 1

Weigh 15% diflufenican, 2% florasulam, 2% pyraflufen-ethyl, 6% sodium lignin sulfonate, 6% phenethyl phenol polyoxyethylene Base ether phosphate, 2% bentonite, 3% glycerine, 0.8% potassium sorbate, 1% butanol, deionized water add to 100% parts by weight.It is above-mentioned 19% diflufenican florasulam pyrrole is made through mixing, high speed shear dispersion 30min in raw material after being sanded with sand mill Careless ether suspending agent.

Example of formulations 2

Weigh 21% diflufenican, 6% florasulam, 3% pyraflufen-ethyl, 7% Negel, 5% alkyl polyoxyethylene ether sulphur Sour sodium, 3% bentonite, 0.5% carboxyethyl cellulose, 4% sorbierite, 0.5% potassium sorbate, 0.8% silicone oil, deionized water add to 100% parts by weight.30% diflufenican is made through mixing, high speed shear dispersion 30min in above-mentioned raw materials after being sanded with sand mill Florasulam pyraflufen-ethyl suspending agent.

Example of formulations 3

Weigh 15% diflufenican, 2% florasulam, 2% pyraflufen-ethyl, 6% sodium lignin sulfonate, 5% Emulsifier BY -110,5% This disk -60#, 1.2% sodium alkyl sulfonate, 0.3% white carbon, 4% propylene glycol, methyl oleate add to 100% parts by weight.Above-mentioned raw materials pass through Mixing, high speed shear dispersion 30min, 19% diflufenican florasulam pyraflufen-ethyl is made after being sanded with sand mill can Disperse oil-suspending agent.

Example of formulations 4

Weigh 26% diflufenican, 9% florasulam, 3% pyraflufen-ethyl, 8% Negel, 5% agriculture breast 1601#, 5% agriculture breast 2201st, 5% Nongru-700 #, 1% sodium naphthalene sulfonate, 0.6% polyvinyl alcohol, 6% ethylene glycol, soybean oil add to 100% parts by weight.Above-mentioned original 38% diflufenican florasulam pyrrole grass is made through mixing, high speed shear dispersion 30min in material after being sanded with sand mill The dispersible oil-suspending agent of ether.

Example of formulations 5

Weigh 30% diflufenican, 4% florasulam, 4% pyraflufen-ethyl, 6% sodium lignin sulfonate, 4% fatty alcohol polyoxyethylene ether Phosphate, 5% sodium polycarboxylate, 3% sodium alkyl sulfonate, 4% fine particle calcium carbonate, diatomite add to 100% parts by weight.Above-mentioned raw materials are through mixing, gas 38% diflufenican florasulam pyraflufen-ethyl wettable powder is made after crushing in stream.

Example of formulations 6

Weigh 30% diflufenican, 8% florasulam, 2% pyraflufen-ethyl, 5% alkyl naphthalene formaldehyde condensation product sodium sulfonate, 4% alkyl phenol Polyoxyethylene ether sodium sulfonate, 3% lauryl sodium sulfate, 3% talcum powder, sucrose add to 100% parts by weight.Above-mentioned raw materials are through mixed It closes, 40% diflufenican florasulam pyraflufen-ethyl wettable powder is made after air-flow crushing.

Example of formulations 7

Weigh 30% diflufenican, 4% florasulam, 4% pyraflufen-ethyl, 8% Negel, 6% dispersing agent NNO（Alkylnaphthalene Sulfonate and formaldehyde condensation product）, 4% neopelex, 2% sodium naphthalene sulfonate, 3% starch, clay adds to 100% parts by weight.On The method for stating raw material frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step produce 38% pyrrole fluorine Acyl grass amine florasulam pyraflufen-ethyl water dispersible granules.

Example of formulations 8

Weigh 22% diflufenican, 12% florasulam, 6% pyraflufen-ethyl, 5% Negel, 6% sodium lignin sulfonate, 2% Nekal BX（Nekal）, 4% sodium alkyl sulfate, 2% sodium carboxymethylcellulose, 3% sulphur ammonium, white carbon adds to 100% Parts by weight.The method of the frequent regulation water intaking dispersible granule of above-mentioned raw materials is mixing, ultra micro air-flow crushing, mixing, granulation step system Take 40% diflufenican florasulam pyraflufen-ethyl water dispersible granules.

Biological Examples 1：Prevent the wheatland broad leaved weed test of pesticide effectiveness.

Inventor has carried out example of formulations 1 in 2017 in Jingzhou City of Hubei Province Jianglin County Tan Qiao towns nonirrigated farmland（19% pyrrole fluorine Acyl grass amine florasulam pyraflufen-ethyl suspending agent）, example of formulations 3（19% diflufenican florasulam pyrrole grass The dispersible oil-suspending agent of ether）, example of formulations 5（38% diflufenican florasulam pyraflufen-ethyl wettable powder）, system Agent embodiment 7（38% diflufenican florasulam pyraflufen-ethyl water dispersible granules）Prevent the examination of wheatland broad leaved weed drug effect It tests, demonstrates control effect of the medicament to wheatland broad leaved weed.Comparison medicament：

CK1:17% diflufenican florasulam water dispersible granules（15+2）

CK2:17% diflufenican pyraflufen-ethyl water dispersible granules（15+2）

CK3:4% diflufenican pyraflufen-ethyl suspending agent（2+2）

CK4:50% diflufenican water dispersible granules

CK5:50 g/l of florasulam suspending agents

CK6:2% pyraflufen-ethyl suspending agent

Controlling object be wheatland broad leaved weed, weeds normal growth phase dispenser.Experimental plot topography is flat, and soil is moisture soil, fertility It is medium, pH value 6.9.Test medicine and dosage refer to table 7.Blank control separately is set, often handles 4 repetitions, per 30 ㎡ of cell, cell Random district's groups arrangement.Using conventional spray-on process, mu dispenser liquid 45kg, dispenser 1 time.

Table 7 prevents wheatland broad leaved weed test of pesticide effectiveness result

Remarks：A shepherd's purses, b Descurainia sophias, c clearvers, d Veronicas, e chickweeds, f corn gromwells.

Result of the test shows that more than example of formulations has good control effect to wheatland broad leaved weed, and preparation is according to upper The dosage of table is sprayed 1 time, reaches more than 97% to the average preventive effect of 30 days after wheatland broad leaved weed medicine, hence it is evident that right better than each According to the preventive effect of medicament.By to 30 days significance difference analysis after medicine, diflufenican, florasulam combined with pyraflufen-ethyl with Other control treatment preventive effect othernesses are notable.

In conclusion the composition of the present invention is using three kinds of active constituent compound schemes, activity and herbicidal effect are not It is the simple superposition of each component activity, compared with existing single formulation or binary built preparation, there is significant herbicidal effect, Synergistic effect is notable, and dosage is reduced, and use cost reduces.

Claims

1. a kind of ternary weeding composition containing diflufenican, it is characterised in that：By the first active constituent diflufenican, Two active constituent florasulams, third active constituent pyraflufen-ethyl and auxiliary agent composition, the mass ratio of three kinds of active constituents are（1~ 90）：（1~90）：（1~90）.

2. the ternary weeding composition containing diflufenican according to claim 1, it is characterised in that：Three kinds of active constituents Mass ratio is（1~60）：（1~60）：（1~60）.

3. the ternary weeding composition containing diflufenican according to claim 1, it is characterised in that：Three kinds of active constituents Mass ratio is（1~30）：（1~30）：（1~30）.

4. the ternary weeding composition containing diflufenican according to claim 1, it is characterised in that：Three kinds of active constituents Mass ratio is 15:2:2.

5. the ternary weeding composition containing diflufenican according to claim 1, it is characterised in that：The combination dosage form For suspending agent, dispersible oil suspending agent, wettable powder, water dispersible granules.

6. the ternary weeding composition containing diflufenican is preventing wheatland to the use on broad leaved weed according to claim 1 On the way.