CN108283182A - A kind of Herbicidal composition for rice field - Google Patents

Abstract

The invention discloses a kind of Herbicidal composition for rice field and its applications, by [4 (6 chlorine 1 of the first active constituent (R) 2,3 benzoxazole, 2 oxygroup) phenoxy group] propionyl imido oxalic acid ethyl ester and the second activity form at cyhalofop-butyl and auxiliary agent, and the weight ratio of the first active constituent and the second active constituent is 1:50~50:1.This composition can be configured to the missible oil agriculturally allowed, wettable powder, water dispersible granules, aqueous emulsion, microemulsion, aqueous suspension agent, dispersible oil-suspending agent.Instant component is reasonable, herbicidal effect is good, drug cost is low, and its activity and be not the active simple superposition of each component with herbicidal effect, compared with existing single formulation, in addition to significant herbicidal effect, and there is significant synergistic effect, delaying drug resistance, safety is good, meets the security requirement of pesticidal preparations.The present invention is used for rice terrace grassy weed, has higher activity of weeding to weeds.

Description

A kind of Herbicidal composition for rice field

Technical field

The present invention relates to a kind of Herbicidal composition for rice field, by active constituent (R) -2- [4- (chloro- 1,3- benzoxazoles-of 6- 2- oxygroups) phenoxy group] propionyl imido oxalic acid ethyl ester and cyhalofop-butyl and auxiliary agent composition, belong to technical field of compounded pesticide.

Background technology

(R) -2- [4- (chloro- 1, the 3- benzoxazoles -2- oxygroups of 6-) phenoxy group] propionyl imido oxalic acid ethyl ester, can inhibit Acetyl-CoA carboxylase (ACCase) activity of grassy weed, for preventing and kill off the weeds on crops, especially rice terrace barnyard grass The grassy weeds such as grass, moleplant seed, lady's-grass, eleusine indica are good to Security of rice.

Cyhalofop-butyl, English name cyhalofop-butyl, chemical name are (R) -2- [4 (4- cyano -2- fluorophenoxies) Phenoxy group]-butyl propionate.Cyhalofop-butyl category aryloxyphenoxypropionic class herbicide has uptake and translocation effect, has to rice There is tight security.It is absorbed by the blade and leaf sheath of plant, bast conduction is accumulated in the meristem zone of plant, supported Acetyl-CoA carboxylase processed（ACCase）, so that aliphatic acid synthesis is stopped, the growth division of cell cannot be normally carried out, membranous system It is destroyed Deng structure containing fat, finally results in Plant death.It is slower it to be absorbed into weeds death from cyhalofop-butyl, generally requires 1 ~3 weeks.

By literature search, at present it is not yet found that (R) -2- [4- (chloro- 1, the 3- benzoxazoles -2- oxygroups of 6-) phenoxy group] third The relevant report of imide ethyl diacetate and cyhalofop-butyl compounding.Inventor is screened by a large amount of formula indoor and field The test of pesticide effectiveness is found (R) -2- [4- (6- chloro- 1,3- benzoxazole -2- oxygroups) phenoxy group] propionyl imido oxalic acid ethyl ester After being compounded in a certain range with cyhalofop-butyl, there is apparent synergistic effect to rice terrace grassy weed, can expand Control of weeds is composed, and use cost, delaying drug resistance, to crop safety height are reduced.

Invention content

The purpose of the present invention is to provide a kind of component is reasonable, synergistic effect is notable, and herbicidal effect is good, and control of weeds spectrum expands Greatly, drug cost is low, energy delaying drug resistance, and to the Herbicidal combinations of rice safety.

Another object of the present invention is to provide a kind of Herbicidal combinations preparation formulations.

It is still another object of the present invention to provide application of the above-mentioned composition on preventing and kill off rice terrace grassy weed.

In order to overcome the defect of existing single formulation, the technical scheme is that solve in this way, a kind of rice terrace removes Careless composition, which is characterized in that including：

A）Active constituent (A)：(R) -2- [4- (the chloro- 1,3- benzoxazoles -2- oxygroups of 6-) phenoxy group] propionyl imido oxalic acid Ethyl ester；

B）Active constituent (B)：Cyhalofop-butyl；

The weight ratio of active constituent (A) and active constituent (B) is 1:50-50:1, preferably 1:25-25:1.

A kind of preparation that Herbicidal combinations can be prepared according to the method well known to those skilled in the art of the present technique of the present invention Dosage form is missible oil, wettable powder, water dispersible granules, aqueous emulsion, microemulsion, aqueous suspension agent, dispersible oil-suspending agent.

To missible oil, workable auxiliary agent has：Emulsifier such as calcium dodecyl benzene sulfonate（Agriculture breast 500#）, Nongru-700 #, agriculture Breast 2201, this disk -60#, emulsifier T-60（Common name：Anhydrous sorbitol single-hard ester acid ester polyoxyethylene ether）、TX-10（It is general Name：Octylphenol polyethylene ethylene oxide（10）Ether）, agriculture breast 1601#, agriculture breast 600#, agriculture breast 400#；Solvent such as dimethylbenzene, solvent naphtha（S- 150、S-180、S-200）, toluene, biodiesel, methylated vegetable oil, N-Methyl pyrrolidone；Cosolvent such as ethyl acetate, Methanol, dimethylformamide, cyclohexanone, acetone, methyl ethyl ketone；Stabilizer such as triphenyl phosphite, epoxychloropropane, aceticanhydride.

To wettable powder, workable auxiliary agent has：Dispersant such as polycarboxylate, lignosulfonates, polyoxyethylene is poly- Oxypropylene group ether block copolymers, alkyl naphthalene formaldehyde condensate sulfonate, alkylphenol-polyethenoxy base ether phosphate, poly alkyl alcohol It is one or more in ethylene oxide ether phosphate, alkylphenol polyoxyethylene ether sulfonate；Wetting agent such as alkyl sulfate, alkyl sulphur It is one or more in hydrochlorate, naphthalene sulfonate；Filler for example ammonium sulfate, urea, sucrose, glucose, diatomite, kaolin, white carbon, Fine particle calcium carbonate, talcum powder, attapulgite, clay are one or more.

To water dispersible granules, workable auxiliary agent has：Dispersant such as polycarboxylate, lignosulfonates, alkyl naphthalene sulfonic acid It is one or more in salt；It is one or more in wetting agent such as alkyl sulfate, alkylsulfonate, naphthalene sulfonate；Disintegrant such as sulphur It is one or more in sour ammonium, sodium sulphate, polyvinylpyrrolidone, starch and its derivative, bentonite；Binder such as starch, Portugal Grape sugar, polyvinyl alcohol（PVA）, it is polyethylene glycol, sodium carboxymethylcellulose, one or more in sucrose；Filler such as diatomite, height Ridge soil, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, clay are one or more.

To aqueous emulsion, workable auxiliary agent has：Emulsifier such as Nonyl pheno（EO=10）Ether phosphate, triphen second Base phenol polyoxyethylene phosphonate, Nongru-700 #（Common name：Alkyl phenol formaldehyde resin polyoxyethylene ether）, agriculture breast 2201#, this Disk -60#（Common name：Span60）, Tween-60 #（Common name：Polyoxyethylene sorbitan stearic acid Ester）、TX-10（Common name：Octylphenol polyethylene ethylene oxide（10）Ether）, agriculture breast 1601（Common name：Triphenoethyl benzene phenol polyoxypropylene is poly- Ethylene oxide block polymer）, it is agriculture breast 600#, one or more in agriculture breast 400#；Solvent such as dimethylbenzene, toluene, cyclohexanone, solvent Oil（The trade mark：S-150、S-180、S-200）It is one or more；Stabilizer such as triphenyl phosphite, epoxychloropropane, epoxy soybean It is one or more in oil；It is one or more in antifreezing agent such as ethylene glycol, propylene glycol, glycerine, urea, inorganic salts such as sodium chloride； It is one or more in thickener such as xanthans, polyvinyl alcohol, bentonite, aluminium-magnesium silicate；Preservative such as formaldehyde, benzoic acid, benzene first It is one or more in sour sodium；Water is deionized water.

To microemulsion, workable auxiliary agent has：Emulsifier such as calcium dodecyl benzene sulfonate（Agriculture breast 500#）, Nongru-700 #, Agriculture breast 2201, this disk-60#, polysorbate60-#, TX-10, agriculture breast 1601（Common name：Phenethyl phenol polyoxyethylene polyoxypropylene Ether）, agriculture breast 600#, agriculture breast 400#；Assistant for emulsifying agent such as methanol, isopropanol, n-butanol, ethyl alcohol；Solvent such as cyclohexanone, N- methyl pyrroles Pyrrolidone, dimethylbenzene, toluene, solvent naphtha（The trade mark：S-150、S-180、S-200）；Stabilizer such as triphenyl phosphite, epoxy chlorine Propane；Water is deionized water.

To aqueous suspension agent, workable auxiliary agent has：Emulsifier such as calcium dodecyl benzene sulfonate（Agriculture breast 500#）, agriculture breast 700#, agriculture breast 2201, this disk -60#, emulsifier T-60（Common name：Anhydrous sorbitol single-hard ester acid ester polyoxyethylene ether）、TX- 10（Common name：Octylphenol polyethylene ethylene oxide（10）Ether）, agriculture breast 1601#, agriculture breast 600#, agriculture breast 400#；Dispersant such as polycarboxylate, It is one or more in lignosulfonates, alkylnaphthalene sulfonate；Wetting agent such as alkyl sulfate, alkylsulfonate, naphthalene sulfonic acids It is one or more in salt；It is a kind of or more in antifreezing agent such as ethylene glycol, propylene glycol, glycerine, urea, inorganic salts such as sodium chloride Kind；It is one or more in thickener such as white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate；Antifoaming agent is as such as silicone oil, silicone It is one or more in compound, C10-20 saturated fat acid compounds, C8-10 aliphatic alcohols, hexanol, butanol, octanol；It collapses It solves one or more in agent such as ammonium sulfate, urea, sucrose, glucose；Stabilizer such as triphenyl phosphite, epoxychloropropane, vinegar Acid anhydride.

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）In It is one or more；Emulsifier such as BY（Castor oil polyoxyethylene ether）Serial emulsifier（BY-110、BY-125、BY-140）, agriculture breast 700#（Common name：Alkyl phenol formaldehyde resin polyoxyethylene ether）, agriculture breast 2201, this disk -60#（Common name：Sorbitol anhydride list is stearic Acid esters）, Tween-60 #（Common name：Sorbitan monostearate polyoxyethylene ether）, agriculture breast 1601#（Common name：Phenethyl Phenol polyoxyethylene poly-oxygen propylene aether）、TERSPERSE 4894（Huntsman Corporation of the U.S. produces）In it is one or more；Wetting Agent such as alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkyl phenol polyoxyethylene ether phosphate, phenethyl phenol polyoxy second Alkenyl ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE 2500（Huntsman Corporation of the U.S. goes out Product）In it is one or more；It is one or more in thickener such as white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate；Antifreezing agent is such as It is one or more in ethylene glycol, propylene glycol, glycerine, urea, inorganic salts such as sodium chloride；Decentralized medium for example soybean oil, rapeseed oil, Cottonseed oil, rice oil, castor oil, palm oil, epoxidized soybean oil, methyl oleate and its esterification oils, diesel oil, machine oil, mineral In oil and esters solvent such as repefral, dibutyl phthalate, ethyl acetate, methyl benzoate it is a kind of or It is a variety of.

Instant component is reasonable, activity when preventive effect is administered alone better than each component, has synergistic effect, and it is anti-to expand weeds It controls spectrum, reduce spraying times, reduce cost accounting, delaying drug resistance is good to crop safety, and the safety for meeting pesticidal preparations is wanted It asks.The present invention has significant control effect to grassy weeds such as rice terrace barnyard grass, moleplant seed, lady's-grass, eleusine indicas.

Specific implementation mode

Illustrate active constituent (A) below by Toxicity Determination：(R) -2- [4- (the chloro- 1,3- benzoxazoles -2- of 6- Oxygroup) phenoxy group] propionyl imido oxalic acid ethyl ester and cyhalofop-butyl compounding to paddy field weed whether having a synergistic effect.

In order to prevent and kill off paddy field weed, the synergy that we have carried out mutual compounding with active constituent (A) and cyhalofop-butyl is ground Study carefully, test method reference《The People's Republic of China's farm-chemical indoor determinations of agricultural industry criteria NY/T1155.3-2006 examination Test the 4th part of criterion herbicide：Active determination test cauline leaf spray-on process》With《People's Republic of China's agricultural industry criteria The 7th part of 2006 farm-chemical indoor determination test rule herbicides of NY/T1155.7-：The synergy of mixture measures》.

Subjects are rice terrace grassy weed：Barnyard grass（Echinochloa crusgalli）, moleplant seed （Leptochloa chinensis）, lady's-grass（Digitaria sanguinalis）, eleusine indica（Eleusine indica）.

Experiment uses the content of organic matter to air-dry sandy loam for 2%, pH 6.8, the good sieving of permeability.Selection is easy to train It supports, the barnyard grass that breeding time is consistent, moleplant seed, lady's-grass, Cowhells grass seed, germination percentage is 80% or more.Experiment soil is quantitatively filled To the 4/5 of basin alms bowl, using basin alms bowl bottom infiltrating irrigation mode, make soil complete wetting.By weed seed uniform broadcasting in soil table Face, earthing 1.0cm after planting move into greenhouse routine culture.The moisturizing in a manner of the bottom infiltrating irrigation of basin alms bowl.The laggard seedling in the ranks of weeds emergence Singling, weed density is at 120 plants every square metre.

5 various concentration gradients are arranged in single dose and each Mixed Pharmacy（On the basis of pilot study result, matched according to medicament Than difference, concentration gradient setting is also different, prevents and kill off rate and is set by geometric progression in the range of 5%~90%）.If clear water pair According to being repeated 4 times.Weeds are in 2~4 leaf phases progress spraying treatment, carry out spraying treatment respectively from low dosage to high dose.

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, find out the ED of each medicament₅₀ Value calculates the co-toxicity coefficient of mixture with Sun Yunpei's Method（CTC）, with this To evaluate activity of the reagent agent to weeds.

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

1 active constituent of table (A) combines the Toxicity Determination to barnyard grass with cyhalofop-butyl

Chemicals treatment	ED50（Ga.i./mu）	ATI	TTI	CTC
					Active constituent（A）	3.02	100.00	-	-
Cyhalofop-butyl（B）	5.96	50.67	-	-
					A:B=1:70	5.67	53.26	51.37	103.7
A:B=1:60	5.36	56.34	51.48	109.4
					A:B=1:50	4.53	66.67	51.64	129.1
A:B=1:40	4.26	70.89	51.87	136.7
					A:B=1:35	4.37	69.11	52.04	132.8
A:B=1:30	4.06	74.38	52.26	142.3
					A:B=1:25	3.84	78.65	52.57	149.6
A:B=1:20	3.84	78.65	53.02	148.3
					A:B=1:10	3.57	84.59	55.16	153.4
A:B=1:1	2.63	114.83	75.34	152.4
					A:B=10:1	1.97	153.30	95.52	160.5
A:B=20:1	2.03	148.77	97.65	152.3
					A:B=25:1	2.07	145.89	98.10	148.7
A:B=30:1	2.13	141.78	98.41	144.1
					A:B=35:1	2.19	137.90	98.63	139.8
A:B=40:1	2.15	140.47	98.80	142.2
					A:B=50:1	2.36	127.97	99.03	129.2
A:B=60:1	3.06	98.69	99.19	99.5
					A:B=70:1	3.34	90.42	99.31	91.1

2 active constituent of table (A) combines the Toxicity Determination to moleplant seed with cyhalofop-butyl

Chemicals treatment	ED50（Ga.i./mu）	ATI	TTI	CTC
					Active constituent（A）	3.21	100.00	-	-
Cyhalofop-butyl（B）	5.69	56.41	-	-
					A:B=1:70	5.36	59.89	57.03	105.0
A:B=1:60	5.12	62.70	57.13	109.7
					A:B=1:50	4.51	71.18	57.27	124.3
A:B=1:40	4.32	74.31	57.48	129.3
					A:B=1:35	4.16	77.16	57.63	133.9
A:B=1:30	4.08	78.68	57.82	136.1
					A:B=1:25	3.75	85.60	58.09	147.4
A:B=1:20	3.68	87.23	58.49	149.1
					A:B=1:10	3.47	92.51	60.38	153.2
A:B=1:1	2.65	121.13	78.21	154.9
					A:B=10:1	2.02	158.91	96.04	165.5
A:B=20:1	2.05	156.59	97.92	159.9
					A:B=25:1	2.14	150.00	98.32	152.6
A:B=30:1	2.35	136.60	98.59	138.5
					A:B=35:1	2.38	134.87	98.79	136.5
A:B=40:1	2.42	132.64	98.94	134.1
					A:B=50:1	2.57	124.90	99.15	126.0
A:B=60:1	3.06	104.90	99.29	105.7
					A:B=70:1	3.37	95.25	99.39	95.8

3 active constituent of table (A) combines the Toxicity Determination to lady's-grass with cyhalofop-butyl

Chemicals treatment	ED50（Ga.i./mu）	ATI	TTI	CTC
					Active constituent（A）	2.94	100.00	-	-
Cyhalofop-butyl（B）	6.34	46.37	-	-
					A:B=1:70	5.64	52.13	47.13	110.6
A:B=1:60	5.37	54.75	47.25	115.9
					A:B=1:50	5.08	57.87	47.42	122.0
A:B=1:40	4.61	63.77	47.68	133.8
					A:B=1:35	4.38	67.12	47.86	140.2
A:B=1:30	4.26	69.01	48.10	143.5
					A:B=1:25	3.96	74.24	48.43	153.3
A:B=1:20	3.85	76.36	48.93	156.1
					A:B=1:10	3.39	86.73	51.25	169.2
A:B=1:1	2.59	113.51	73.19	155.1
					A:B=10:1	2.11	139.34	95.12	146.5
A:B=20:1	2.03	144.83	97.45	148.6
					A:B=25:1	2.05	143.41	97.94	146.4
A:B=30:1	2.17	135.48	98.27	137.9
					A:B=35:1	2.23	131.84	98.51	133.8
A:B=40:1	2.37	124.05	98.69	125.7
					A:B=50:1	2.41	121.99	98.95	123.3
A:B=60:1	2.93	100.34	99.12	101.2
					A:B=70:1	3.19	92.16	99.24	92.9

4 active constituent of table (A) combines the Toxicity Determination to eleusine indica with cyhalofop-butyl

Chemicals treatment	ED50（Ga.i./mu）	ATI	TTI	CTC
					Active constituent（A）	2.75	100.00	-	-
Cyhalofop-butyl（B）	6.58	41.79	-	-
					A:B=1:70	5.91	46.53	42.61	109.2
A:B=1:60	5.52	49.82	42.75	116.5
					A:B=1:50	4.97	55.33	42.93	128.9
A:B=1:40	4.82	57.05	43.21	132.0
					A:B=1:35	4.56	60.31	43.41	138.9
A:B=1:30	4.45	61.80	43.67	141.5
					A:B=1:25	4.23	65.01	44.03	147.6
A:B=1:20	3.75	73.33	44.57	164.6
					A:B=1:10	3.48	79.02	47.08	167.8
A:B=1:1	2.29	120.09	70.90	169.4
					A:B=10:1	1.75	157.14	94.71	165.9
A:B=20:1	1.83	150.27	97.23	154.6
					A:B=25:1	1.94	141.75	97.76	145.0
A:B=30:1	2.01	136.82	98.12	139.4
					A:B=35:1	2.06	133.50	98.38	135.7
A:B=40:1	2.17	126.73	98.58	128.6
					A:B=50:1	2.25	122.22	98.86	123.6
A:B=60:1	2.34	117.52	99.05	118.7
					A:B=70:1	2.58	106.59	99.18	107.5

The Toxicity Determination result shows：(R) -2- [4- (the chloro- 1,3- benzoxazoles -2- oxygroups of 6-) phenoxy group] propionyl imido grpup Ethyl diacetate and cyhalofop-butyl are with weight ratio for 1：50~50:1 mixed has preferably barnyard grass, moleplant seed, lady's-grass, eleusine indica Synergistic effect, weight ratio 1：25~25:When 1, synergistic effect is the most notable.

In order to better illustrate the present invention, the content of present invention is described further with reference to embodiment, in formula Percentage is weight percentage, and active constituent (A) is：(R) -2- [4- (the chloro- 1,3- benzoxazoles -2- oxygroups of 6-) phenoxy group] Propionyl imido oxalic acid ethyl ester.

Example of formulations 1

10% (A), 8% cyhalofop-butyl, 6% agriculture breast 1601#, 8% agriculture breast 2201,3% dimethylformamide, 1% epoxychloropropane are weighed, Toluene adds to 100% parts by weight.18% (A) cyhalofop-butyl missible oil is made through mixing, stirring and dissolving in above-mentioned raw materials afterwards completely.

Example of formulations 2

8% (A), 4% cyhalofop-butyl, 6% Nongru-700 #, 4% agriculture breast 600#, 2% acetone, 2% triphenyl phosphite are weighed, dimethylbenzene adds To 100% parts by weight.12% (A) cyhalofop-butyl missible oil is made through mixing, stirring and dissolving in above-mentioned raw materials afterwards completely.

Example of formulations 3

Weigh 10% (A), 6% cyhalofop-butyl, 4% polycarboxylic acids calcium, 4% alkylphenol-polyethenoxy base ether phosphate, 3% dodecyl sulphur Sour sodium, 3% fine particle calcium carbonate, talcum powder add to 100% parts by weight.16% (A) cyanogen fluorine grass is made through mixing, after air-flow crushing for above-mentioned raw materials Ester wettable powder.

Example of formulations 4

Weigh 12% (A), 12% cyhalofop-butyl, 4% aliphatic alcohol polyoxyvinethene phosphate, 4% lignosulfonates, 3% alkyl sulfonic acid Sodium, 5% kaolin, clay add to 100% parts by weight.24% (A) cyhalofop-butyl is made through mixing in above-mentioned raw materials after air-flow crushing Wettable powder.

Example of formulations 5

Weigh 18% (A), 20% cyhalofop-butyl, 6% Negel, 4% sodium lignin sulfonate, 4% Nekal BX（Dibutyl naphthalene Sodium sulfonate）, 3% sodium naphthalene sulfonate, 2% polyethylene glycol, attapulgite adds to 100% parts by weight.The frequent regulation water intaking dispersion of above-mentioned raw materials The method of granula i.e. mixing, ultra micro air-flow crushing, mixing, granulation step produces 38% (A) cyhalofop-butyl water-dispersible granule.

Example of formulations 6

Weigh 20% (A), 14% cyhalofop-butyl, 4% sodium lignin sulfonate, 3% sodium naphthalene sulfonate, 6%K-12（Lauryl sodium sulfate）、 3% starch, 3% sulphur ammonium, talcum powder add to 100% parts by weight.The method i.e. mixing of the frequent regulation water intaking dispersible granule of above-mentioned raw materials, Ultra micro air-flow crushing, mixing, granulation step produce 34% (A) cyhalofop-butyl water-dispersible granule.

Example of formulations 7

Weigh 12% (A), 24% cyhalofop-butyl, 6% Nongru-700 #, 4% agriculture breast 2201#, 2% cyclohexanone, 3% triphenyl phosphite, 2% Glycerine, 5% polyvinyl alcohol, 1.4% benzaldehyde, deionized water add to 100% parts by weight.Above-mentioned raw materials are uniformly mixed, after high-speed stirred 36% (A) aqueous cyhalofop-butyl emulsion is made.

Example of formulations 8

Weigh 6% (A), 26% cyhalofop-butyl, 5% Nongru-700 #, 6% this disk -60#, 3% solvent naphtha S-200,3% epoxidized soybean oil, 2% Such as sodium chloride, 3% bentonite, 1.2% sodium benzoate, deionized water adds to 100% parts by weight.Above-mentioned raw materials are uniformly mixed, high-speed stirring 32% (A) aqueous cyhalofop-butyl emulsion is made after mixing.

Example of formulations 9

Weigh 8% (A), 10% cyhalofop-butyl, 5% agriculture breast 1601,6% agriculture breast 2201,4% ethyl alcohol, 5%S-150,2% phosphorous triphenyl phosphate Ester, deionized water add to 100% parts by weight.18% (A) cyhalofop-butyl microemulsion is made after the agitated mixing of above-mentioned raw materials.

Example of formulations 10

14% (A), 8% cyhalofop-butyl, 4% this disk -60#, 5% agriculture breast 1601,4% isopropanol, 2% toluene, 2% epoxychloropropane are weighed, Deionized water adds to 100% parts by weight.22% (A) cyhalofop-butyl microemulsion is made after the agitated mixing of above-mentioned raw materials.

Example of formulations 11

Weigh 6% (A), 4% cyhalofop-butyl, 5% Nongru-700 #, 4% agriculture breast 2201,3% Negel, 3% glycerine, 2% polyethylene Alcohol, 1% octanol, 1.3% sucrose, 2% aceticanhydride, deionized water add to 100% parts by weight.Through high speed shear, sand after above-mentioned raw materials mixing It is sanded in grinding machine, forms high dispersive, the suspension system of stabilization in aqueous dispersion, 10% (A) cyhalofop-butyl water suspending is made Agent.

Example of formulations 12

Weigh 12% (A), 6% cyhalofop-butyl, 4% agriculture breast 1601#, 8% sodium polycarboxylate, 4% sodium alkyl sulfonate, 2% propylene glycol, 3% swelling Soil, 2% butanol, 2% glucose, 1.3% epoxychloropropane, deionized water add to 100% parts by weight.Through high speed after above-mentioned raw materials mixing It is sanded in shearing, sand mill, forms high dispersive, the suspension system of stabilization in aqueous dispersion, 18% (A) cyhalofop-butyl is made Aqueous suspension agent.

Example of formulations 13

Weigh 10% (A), 8% cyhalofop-butyl, 4% Nongru-700 #, 6% agriculture breast 1601#, 2% agriculture breast 2201#, 1% phenethyl phenol polyoxy second Alkenyl ether phosphate, 2% bentonite, 3% propylene glycol, soybean oil add to 100% parts by weight.Above-mentioned raw materials are through mixing, high speed shear point 30min is dissipated, the 18% dispersible oil-suspending agent of (A) cyhalofop-butyl is made after being sanded with sand mill.

Example of formulations 14

Weigh 4% (A), 12% cyhalofop-butyl, 5% agriculture breast 1601#, 6% Tween-60 #, 4%TERSPERSE 4894（U.S.'s Hensel steps Company produces）, 5% agriculture breast 2201#, 3% sodium alkyl sulfate, 3% aluminium-magnesium silicate, 2% glycerine, palm oil adds to 100% parts by weight.On Raw material is stated through mixing, high speed shear disperses 30min, and the dispersible oil of 16% (A) cyhalofop-butyl is made after being sanded with sand mill and suspends Agent.

Biological Examples 1：Prevent paddy field weed field control effectiveness test.

Inventor has carried out example of formulations 1 in 2017 in Junichiro Koizumi village of xiangtan, hunan province county（18% (A) cyhalofop-butyl Missible oil）, example of formulations 3（16% (A) cyhalofop-butyl wettable powder）, example of formulations 5（38% (A) cyhalofop-butyl water Dispersible granule）, example of formulations 7（36% (A) aqueous cyhalofop-butyl emulsion）, example of formulations 9（18% (A) cyhalofop-butyl is micro- Emulsion）, example of formulations 11（10% (A) cyhalofop-butyl water suspending agent）, example of formulations 13（18% (A) cyhalofop-butyl can Disperse oil-suspending agent）Prevent paddy field weed field control effectiveness test, demonstrate the medicament to the control effect of paddy field weed and Safety to rice.

Trial crops are rice, and controlling object is rice terrace grassy weed：Barnyard grass（Echinochloa crusgalli）, moleplant seed（Leptochloa chinensis）, lady's-grass（Digitaria sanguinalis）, eleusine indica （Eleusine indica）, weeds were in for 2~4 leaf phases when dispenser.Experimental plot topography is flat, and soil fertility is medium, pH value 7.1. Test medicine and dosage refer to table 5.Blank control separately is set, often processing is repeated 4 times, per 30 ㎡ of cell, the random district's groups arrangement of cell. Using conventional spray-on process, mu dispenser liquid 45kg.

30d investigates each processing weeds strain preventive effect after medicine.Investigation method is to investigate per cell at 2 points, every 0.25m²（0.5m× 0.5m）.Drug effect computational methods are：

Wherein：CK is the careless number of blank district work（Or fresh weight）；PT is the careless number for the treatment of region remaining（Or fresh weight）.

Table 5 prevents paddy field weed field control effectiveness test strain preventive effect

Table of field test results are bright, and the above example of formulations dosage is 7g a.i./mu, is had very to rice terrace grassy weed Good control effect, 30 days average preventive effects are significantly better than that 20% (A) suspending agent 10g a.i./mu, 20% cyhalofop-butyl after medicine The preventive effect of dispersible oil-suspending agent 7g a.i./mu.By to 30 days significance difference analysis after medicine, compounded combination and other lists It is notable that agent handles preventive effect otherness.

Security survey：7d, 15d estimate safety of each processing to rice seedlings after medicine.Observation result is, all for reagent Paddy growth safety, the poisoning phenomenon such as no chlorisis, dwarfing occur for agent.

In conclusion the composition of the present invention is to use two kinds of active components compound scheme, activity and herbicidal effect are not It is the active simple superposition of each component, compared with existing single formulation, in addition to significant herbicidal effect, and has significantly Synergistic effect, preparation less residue is pollution-free to crop, and safety is good, meets the security requirement of pesticidal preparations.

Claims (4)

1. a kind of Herbicidal composition for rice field, it is characterised in that：By the first active constituent (R) -2- [4- (chloro- 1,3- Ben Bing Evil of 6- Azoles -2- oxygroups) phenoxy group] propionyl imido oxalic acid ethyl ester and the second active constituent cyhalofop-butyl and auxiliary agent form, and first lives The weight ratio of property ingredient and the second active constituent is 1:50~50:1.

2. Herbicidal composition for rice field according to claim 1, it is characterised in that：First active constituent and the second active constituent Weight ratio be 1:25~25:1.

3. Herbicidal composition for rice field according to claim 1, it is characterised in that：The combination dosage form is missible oil, wettable Property pulvis, water dispersible granules, aqueous emulsion, microemulsion, aqueous suspension agent, dispersible oil-suspending agent.

4. application of the Herbicidal composition for rice field on prevention rice terrace grassy weed according to claim 1.