CN109645020A - A kind of herbicidal composition - Google Patents
A kind of herbicidal composition Download PDFInfo
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- CN109645020A CN109645020A CN201910016900.8A CN201910016900A CN109645020A CN 109645020 A CN109645020 A CN 109645020A CN 201910016900 A CN201910016900 A CN 201910016900A CN 109645020 A CN109645020 A CN 109645020A
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- grand
- foramsulfuron
- herbicidal composition
- thiophene ketone
- herbicidal
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/38—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< where at least one nitrogen atom is part of a heterocyclic ring; Thio analogues thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N39/00—Biocides, pest repellants or attractants, or plant growth regulators containing aryloxy- or arylthio-aliphatic or cycloaliphatic compounds, containing the group or, e.g. phenoxyethylamine, phenylthio-acetonitrile, phenoxyacetone
- A01N39/02—Aryloxy-carboxylic acids; Derivatives thereof
- A01N39/04—Aryloxy-acetic acids; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
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- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
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- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention belongs to technical field of pesticide, disclose a kind of herbicidal composition, the herbicidal composition using thiophene ketone sulphur grand, foramsulfuron and dimethyl tetrachloride as active constituent, the weight ratio of three kinds of active constituents is (1~15): (10~46): (60~200), and weight percentage of the active constituent in herbicidal composition is 10-85%.The invention also discloses application of the Herbicidal combinations in Control Weeds in Maize Field, Herbicidal combinations of the present invention expand herbicidal spectrum by the mixed of herbicide, improve herbicidal effect, herbicide resistance is delayed, reduce pesticide cost, and a variety of dosage forms for meeting agricultural production demand can be prepared, and good to corn safety, meet the security requirement of pesticidal preparations.
Description
[technical field]
The invention belongs to technical field of pesticide, disclose a kind of herbicidal composition.
[background technique]
Corn is the important cereal crops in China, is also important forage crop.In recent years, as animal husbandry, food add
The market demand of the development of the industries such as work, wine-making industry and biodiesel, corn is continuously increased.But since Weed infestation causes jade
Rice yield reduces, and is required to apply a large amount of herbicide progress weed control every year thus to retrieve crop yield loss.Currently,
It is also limited that corn field herbicide by crop safety is limited degrass spectrum, and a kind of herbicide is used alone, cannot completely effectively control
The generation of corn field weed processed.Furthermore some herbicides are easy to make since the water-soluble big or field lasting period is too long, dosage is excessive
At corn phytotoxicity or succession crop phytotoxicity.
Thiophene ketone sulphur grand (thiencarbazone-methyl) is sulfonyl-amino-carbnyl triazolinone class herbicide, is acetyl
Lactic acid synzyme (ALS) inhibitor makes cessation of cell division, weeds by inhibiting the biosynthesis of plant essential amino acid
Plant stops growing, while having soil activation and the spraying activity of cauline leaf, is absorbed by weeds root system and blade, and conduct upwards,
With tagging and remain herbicidal effect.It is mainly used for corn, grass family and broadleaf weeds are prevented and kill off in cereal field, miscellaneous to part grass family
The preventive effect of grass is slightly worse, invalid to sedge weed.
Foramsulfuron (foramsulfuron) is also known as formamido Sulfometuron Methyl, belongs to sulfonylurea herbicide, acts on machine
Reason is acetolactate synthestase (ALS) inhibitor, is mainly used for corn field and prevents and kill off grass as other sulfonylurea herbicides
Section weeds and certain broadleaf weeds are invalid to sedge weed.Foramsulfuron in corn Field information often and safener
Isoxadifen is mixed to improve the safety to corn.
Dimethyl tetrachloride (MCPA) is phenoxy acetic acid class selectivity Uptake and translocation hormone like herbicide, can destroy dicotyledonous plant
The conducting tissue of object, makes growth and development be interfered, and cauline leaf distortion, basal part of stem expands thicker or cracking.Suitable for water paddy and wheat
Broadleaf weeds and sedge weed are prevented and kill off in the gramineous crops such as class, corn field, invalid to gramineae weed.
It is not only at high cost that any one of the above herbicide is used alone, but also degrass spectrum is limited, it is difficult to reach disposable anti-
Except the effect of a variety of weeds.Therefore, the above various single doses are usually used in mixed way with other herbicides by people respectively, such as: specially
Sharp CN201510680797.9 discloses a kind of formamido group Sulfometuron Methyl and mcpa sodium compound herbicide, passes through test hair
Existing, it is unsatisfactory that foramsulfuron with dimethyl tetrachloride answers mating section broadleaf weeds preventive effect.
[summary of the invention]
It is an object of the invention to according to the status and corn field weed of current corn field herbicide, a situation arises,
There is provided a kind of broad weed-killing spectrum, herbicidal effect it is good, using safe, be conducive to the herbicidal composition of corn field weed comprehensive treatment.
Present invention employs following technical solutions: a kind of herbicidal composition, including thiophene ketone sulphur is grand, foramsulfuron and two
Three kinds of active constituents of first tetrachloro, the weight ratio of the active constituent are as follows: (1-15): (10-46): (60-200), preferably are as follows:
(4.5-11.5): (19-37): (95-165), optimum weight ratio are as follows: 8:28:130.
The present invention also provides the preparation containing above-mentioned composition, the weight percentage of effective component is in the preparation
10-85%.
The preparation can be any dosage form agriculturally allowed, preferred dosage form be wettable powder, water dispersible granules,
Suspending agent etc., more preferably wettable powder.
In the preparation, also contain auxiliary agent, specially dispersing agent, wetting agent, disintegrating agent, emulsifier, adhesive or carrier
One or more of Deng.
When being configured to wettable powder, can used additives include: dispersing agent be selected from lignosulfonates, polycarboxylate, alkane
Base naphthalene sulfonate, neopelex, alkyl polyoxyethylene ether sulfonate or alkylphenol-polyethenoxy base ether formaldehyde condensation
One of object etc. is a variety of；Wetting agent is selected from lauryl sodium sulfate, Teepol, fatty alcohol polyoxyethylene ether, nonyl
One of base phenol polyethenoxy ether or sorbitan fatty acid ester polyoxyethylene ether etc. are a variety of；Carrier be selected from kaolin,
One of diatomite, attapulgite, bentonite or white carbon black etc. are a variety of.
When being configured to water dispersible granules, can used additives include: dispersing agent be selected from polycarboxylate, lignosulfonates, alkane
One of base naphthalene sulfonate, alkyl phenol polyoxyethylene ether, EO/PO block polyether or alkyl phenol polyoxyethylene ether sulfonate etc. or
It is a variety of；Wetting agent is selected from alkyl sulfate, naphthalene sulfonate, aliphatic alcohol sulfate, dodecyl benzene sulfonate, dodecyl sulphate
One of sodium, fatty alcohol polyoxyethylene ether or alkylsulfonate etc. are a variety of；Disintegrating agent is selected from ammonium sulfate, sodium sulphate, chlorination
Sodium, ammonium chloride, urea, cornstarch and its derivative, low-substituted hydroxypropyl cellulose, polyvinylpyrrolidone or sodium alginate
Deng one of or it is a variety of；Adhesive be selected from hydroxyethyl cellulose, soluble starch, polyethylene glycol, methylcellulose, dextrin,
One of fructose or polyvinyl alcohol etc. are a variety of；Carrier is selected from white carbon black, kaolin, bentonite, diatomite, lightweight carbonic acid
One of calcium, gypsum, attapulgite, urea or sucrose etc. are a variety of.
When being configured to suspending agent, can used additives include: dispersing agent be selected from polycarboxylate, lignosulfonates, alkylnaphthalene
One of sulfonate, TERSPERSE2425, alkyl phenol polyoxyethylene ether are a variety of；Wetting agent is selected from alkylphenol-polyethenoxy
Base ether formaldehyde condensation products sulfate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyoxyethylene groups ether phosphate, alkyl
One of sulfate, naphthalene sulfonate are a variety of；Thickener is selected from xanthan gum, carboxymethyl cellulose, Sodium Polyacrylate, swelling
One of soil, aluminium-magnesium silicate are a variety of；Antifreezing agent is selected from one of ethylene glycol, propylene glycol, glycerol, urea or a variety of；It is anti-
Rotten agent is selected from one of formaldehyde, sorbic acid, sodium benzoate or a variety of；Defoaming agent can be organic silicon defoaming agent；It goes in right amount
Ionized water.
Salt described in above-mentioned auxiliary agent such as polycarboxylate, lignosulfonates etc. is sodium salt or calcium salt.
The present invention provides a kind of safe and efficient, broad weed-killing spectrum cornfield weeding compositions, compared with prior art originally
Invention has the advantages that
(1) present invention has successfully filtered out the herbicide group of grand thiophene ketone sulphur, foramsulfuron and dimethyl tetrachloride ternary built
Object is closed, the activity of weeding and effect of these three effective components are more than simple superposition, but show the synergistic effect of significant ground.
With existing foramsulfuron compared with dimethyl tetrachloride binary built Herbicidal combinations, herbicidal effect is more excellent, especially suitable
Prevention and treatment for corn field common weed.
(2) present invention expands degrass spectrum, reduces pesticide cost, and three kinds of mechanisms of action it is different active constituent it is multiple
Match, is conducive to the resistance for delaying corn field weed to herbicide.
(3) Herbicidal combinations of the present invention can prepare a variety of dosage forms for meeting agricultural production demand, and pacify to corn
Good perfection meets the security requirement of pesticidal preparations.
[specific embodiment]
In order to make the objectives, technical solutions, and advantages of the present invention clearer, present invention following specific embodiments
It is illustrated, but is only limitted to this absolutely not.As described below is the preferable embodiment of the present invention, is used only to describe the present invention, cannot
Be interpreted as limitation of the present invention, it should be pointed out that be any modification made within the spirit and principles in the present invention, it is equivalent
Replacement and improvement, should all be included in the protection scope of the present invention.
The grand foramsulfuron dimethyl tetrachloride wettable powder of example of formulations 1:41.5% thiophene ketone sulphur
Weigh grand 2% thiophene ketone sulphur, 7% foramsulfuron, 32.5% dimethyl tetrachloride, 10% sodium lignin sulfonate, 4% 12
Sodium alkyl sulfate, diatomite complement to 100%, and after mixing, premenstrual mixing, air-flow crushing, rear mixing obtain 41.5% thiophene ketone
The grand foramsulfuron dimethyl tetrachloride wettable powder of sulphur.
The grand foramsulfuron dimethyl tetrachloride wettable powder of example of formulations 2:58% thiophene ketone sulphur
Weigh grand 3% thiophene ketone sulphur, 15% foramsulfuron, 40% dimethyl tetrachloride, 8% sodium lignin sulfonate, 5% secondary alkyl
Sodium sulphate, white carbon black complement to 100%, and after mixing, it is grand to obtain 58% thiophene ketone sulphur for premenstrual mixing, air-flow crushing, rear mixing
Foramsulfuron dimethyl tetrachloride wettable powder.
The grand foramsulfuron dimethyl tetrachloride water dispersible granules of example of formulations 3:71% thiophene ketone sulphur
Weigh grand 1% thiophene ketone sulphur, 10% foramsulfuron, 60% dimethyl tetrachloride, 7% sodium polycarboxylate, 3% sodium naphthalene sulfonate,
1.5% urea, 0.2% hydroxyethyl cellulose, kaolin complement to 100%, after mixing, premenstrual mixing, air-flow crushing, after
Mixing plus water are mediated, are granulated, are sieved, and the 71% grand foramsulfuron dimethyl tetrachloride water dispersible granules of thiophene ketone sulphur are obtained.
The grand foramsulfuron dimethyl tetrachloride water dispersible granules of example of formulations 4:41% thiophene ketone sulphur
Weigh grand 3% thiophene ketone sulphur, 8% foramsulfuron, 30% dimethyl tetrachloride, 9% sodium lignin sulfonate, 4% dodecane
Base sodium sulphate, 2% sodium alginate, 0.5% soluble starch, precipitated calcium carbonate complement to 100%, after mixing, premenstrual mixed
Conjunction, air-flow crushing, rear mixing plus water kneading are granulated, screening, obtain the 41% grand foramsulfuron dimethyl tetrachloride water of thiophene ketone sulphur
Dispersible granule.
The grand foramsulfuron dimethyl tetrachloride suspending agent of example of formulations 5:19% thiophene ketone sulphur
Weigh grand 0.5% thiophene ketone sulphur, 3.5% foramsulfuron, 15% dimethyl tetrachloride, 3%TERSPERSE2425,4% benzene
Ethyl phenol polyoxyethylene groups ether phosphate, 0.15% xanthan gum, 3% glycerol, 0.1% sodium benzoate, the defoaming of 0.2% organic silicon
Agent, deionized water complement to 100%, and frequent regulation crushes, reconciles for the method for suspending agent, i.e. high speed shear dispersion, sand milling, obtain
The 19% grand foramsulfuron dimethyl tetrachloride suspending agent of thiophene ketone sulphur.
The grand foramsulfuron dimethyl tetrachloride suspending agent of example of formulations 6:34% thiophene ketone sulphur
Weigh grand 1% thiophene ketone sulphur, 13% foramsulfuron, 20% dimethyl tetrachloride, 5% sodium lignin sulfonate, 3% alkyl phenol
Polyoxyethylene groups ether phosphate, 2% bentonite, 2% urea, 1% sorbic acid, 0.1% organic silicon defoaming agent, deionized water are mended
To 100%, frequent regulation crushes, reconciles for the method for suspending agent, i.e. high speed shear dispersion, sand milling foot, obtains 34% thiophene ketone sulphur
Grand foramsulfuron dimethyl tetrachloride suspending agent.
It is raw to survey embodiment 1
Thiophene ketone sulphur is grand, foramsulfuron and dimethyl tetrachloride compounding synergy measurement and Herbicidal test
In order to prevent and kill off the corn field weed in agricultural production, inventor has carried out grand thiophene ketone sulphur, foramsulfuron and diformazan
The synergy research that tetrachloro mutually compounds carries out cauline leaf process using indoor pot method, and test is referring to " People's Republic of China's agricultural
Professional standard NY/T 1155.7-2006 farm-chemical indoor determination test rule-herbicide " the 7th part: mixed joint is made
With the Colby method instructed in measurement.
1, reagent agent
21% thiophene ketone sulphur precititation dispersible granule
20% foramsulfuron suspending agent
20% dimethyl tetrachloride aqua
2, for trying weeds
Herba digitariae, Chenopodiaceae, the rhizome of nutgrass flatsedge
Culture for trying weeds is placed in shallow-water tank using potting cultivation with 11 × 12cm plastic tub, will not made
The soil adopted back in the farmland of used herbicide air-dries, and basin is filled after sieving, and in basin at dry ground quantitative 4/5, P in soil H value 7.0 has
Machine matter content 1.2%.After moistening soil completely using basin alms bowl bottom infiltrating irrigation mode, quantified pretreated for examination weed seed
It broadcasts sowing in soil surface, according to seed size earthing 0.5cm~1.0cm, 28~32 DEG C/18~25 DEG C of room temperature (d/n), phase
To humidity 75% ± 15%.Basin alms bowl bottom infiltrating irrigation mode moisturizing is used in incubation, and soil is kept to be sufficiently humidified so as to.Go out to weeds
Herba digitariae is set to 10 plants after seedling, Chenopodiaceae and the rhizome of nutgrass flatsedge are set to 5 plants.
3, experimental design
Test sets 41 processing altogether, and wherein thiophene ketone sulphur is grand sets 1,4.5,8,5 11.5,15g a.i./ha dosage processing,
Foramsulfuron sets 10,19,28,5 37,46g a.i./ha dosage processing, and dimethyl tetrachloride sets 60,95,130,165,200g
A.i./ha 5 dosage processing, thiophene ketone sulphur is grand+and foramsulfuron+dimethyl tetrachloride three is mixed sets 1+10+60,1+19+ respectively
95、1+28+130、1+37+165、1+46+200、4.5+10+95、4.5+19+130、4.5+28+165、4.5+37+200、4.5+
46+60、8+10+130、8+19+165、8+28+200、8+37+60、8+46+95、11.5+10+165、11.5+19+200、11.5
+28+60、11.5+37+95、11.5+46+130、15+10+200、15+19+60、15+28+95、15+37+130、15+46+
The processing of 165g a.i./ha25 dosage ratio, separately sets a blank control, amounts to 41 processing, is repeated 4 times.
4, test method
Spray (ASS-4 type agriculture in spray tower is placed in grass family and sedge weed 2-4 leaf phase, broadleaf weeds 3-5 leaf
Medicine sprinkling system, DG8003 spray head, atomisation pressure 2.75MPa, 30Kg/ mus of spouting liquid), it is placed in greenhouse and trains to natural air drying
Support observation.
5, weedy rices and analysis method
After application, growth conditions, poisoning symptom and the phytotoxicity degree of routine observation weeds record symptom of chemical damage, 21 after medicine
It weighs aerial part fresh weight, calculates weeds survival rate E, and the type of action of mixed medicament is evaluated using Colby method, further
Inquire into the reasonability of proportion.
E=treatment region weeds fresh weight × 100/ check plot weeds fresh weight ... ... ... ... ... (1)
Colby method calculation formula:
The weeds survival rate of herbicide A when X --- dosage is P；
The weeds survival rate of herbicide B when Y --- dosage is Q；
The weeds survival rate of herbicide C when Z --- dosage is W；
E0--- the theoretical weeds survival rate of herbicide (A+B+C) when dosage is (P+Q+W)；
E0- E > 10% is synergistic effect；E0- E < -10% is antagonism；E0- E value is summation action between ± 10%.
6, result and analysis are shown in Table 1-3
1 thiophene ketone sulphur of table is grand, foramsulfuron and dimethyl tetrachloride mixture are to the co-toxicity of herba digitariae
Thiophene ketone sulphur is grand, the foramsulfuron co-toxicity to herba digitariae mixed with dimethyl tetrachloride: thiophene ketone sulphur is grand and formamide sulphur
Grand to have preventive effect to herba digitariae, thiophene ketone sulphur is grand slightly worse to the preventive effect of herba digitariae, and foramsulfuron is preferable to the preventive effect of herba digitariae, dimethyl tetrachloride
To no effect to herba digitariae, as thiophene ketone sulphur is grand and the increase of foramsulfuron dosage, the preventive effect of herba digitariae is improved after using with.
2 thiophene ketone sulphur of table is grand, foramsulfuron and dimethyl tetrachloride mixture are to the co-toxicity of Chenopodiaceae
Thiophene ketone sulphur is grand, the foramsulfuron co-toxicity to Chenopodiaceae mixed with dimethyl tetrachloride: three kinds of active constituents have Chenopodiaceae
Effect, thiophene ketone sulphur is grand preferable to the preventive effect of Chenopodiaceae, and foramsulfuron and dimethyl tetrachloride are relatively slightly worse to the preventive effect of Chenopodiaceae, with thiophene ketone sulphur
The increase of grand dosage improves the preventive effect of Chenopodiaceae after using with.
3 thiophene ketone sulphur of table is grand, foramsulfuron and dimethyl tetrachloride mixture are to the co-toxicity of the rhizome of nutgrass flatsedge
Thiophene ketone sulphur is grand, the foramsulfuron co-toxicity to the rhizome of nutgrass flatsedge mixed with dimethyl tetrachloride: dimethyl tetrachloride is to the rhizome of nutgrass flatsedge
Preventive effect it is preferable, thiophene ketone sulphur is grand and foramsulfuron to the rhizome of nutgrass flatsedge to no effect, with the increase of dimethyl tetrachloride dosage, after using with
The preventive effect of the rhizome of nutgrass flatsedge is improved.
The Toxicity Determination result shows grand thiophene ketone sulphur, foramsulfuron and dimethyl tetrachloride at weight ratio (1-15): (10-
46): using E in the range of (60-200) with0- E > 10% shows as synergistic effect to weeds, expands control of weeds spectrum, reaches
The purpose of corn field main weeds is prevented and kill off simultaneously.
It is raw to survey embodiment 2:
Thiophene ketone sulphur is grand, foramsulfuron and dimethyl tetrachloride compounding are to the safety testing of corn
In order to study the safety that grand thiophene ketone sulphur, foramsulfuron and dimethyl tetrachloride mutually compound, inventor has done following
Test, test is referring to " People's Republic of China's agricultural industry criteria NY/T 1155.8-2007 farm-chemical indoor determination experiment
Criterion-herbicide " the 8th part: the safety testing cauline leaf spray-on process of crop.
1, reagent agent
21% thiophene ketone sulphur precititation dispersible granule
20% foramsulfuron suspending agent
20% dimethyl tetrachloride aqua
2, for studying object
The culture of corn is placed in shallow-water tank using greenhouse pot culture method with 11 × 12cm plastic tub, will be not used
The soil adopted back in the farmland of herbicide air-dries, and basin is filled after sieving, in basin at dry ground quantitative 4/5, P in soil H value 7.0, and organic matter
Content 1.2%.After keeping soil completely wet from top-watered, corn seed is quantified and is broadcasted sowing in soil surface, it is big according to seed
Small earthing 0.5cm~2.0cm, 28~32 DEG C/18~25 DEG C of room temperature (d/n), relative humidity 75% ± 15%.Incubation
It is middle to use basin alms bowl bottom infiltrating irrigation mode moisturizing, keep soil to be sufficiently humidified so as to.
3, for trying weeds
Barnyard grass, herba digitariae, Chenopodiaceae, Amaranthus retroflexus, the rhizome of nutgrass flatsedge
Culture for trying weeds is placed in shallow-water tank using greenhouse pot culture method with 11 × 12cm plastic tub, will not made
The soil adopted back in the farmland of used herbicide air-dries, and basin is filled after sieving, and in basin at dry ground quantitative 4/5, P in soil H value 7.0 has
Machine matter content 1.2%.After moistening soil completely with basin alms bowl bottom infiltrating irrigation mode, quantitatively spread pretreated for examination weed seed
It is sowed at soil surface, according to seed size earthing 0.5cm~1.0cm, 28~32 DEG C/18~25 DEG C of room temperature (d/n), relatively
Humidity 75% ± 15%.Basin alms bowl bottom infiltrating irrigation mode moisturizing is used in incubation, and soil is kept to be sufficiently humidified so as to.It emerges to weeds
Barnyard grass, herba digitariae are set to 10 plants afterwards, Chenopodiaceae, Amaranthus retroflexus, the rhizome of nutgrass flatsedge are set to 5 plants.
4, experimental design
Test sets 41 processing altogether, and wherein thiophene ketone sulphur is grand sets 3,6,12,5 24,48g a.i./ha dosage processing, formyl
Amine sulphur is grand to set 6,12,24,5 48,96g a.i./ha dosage processing, and dimethyl tetrachloride sets 80,160,320,640,1280g
A.i./ha 5 dosage processing, thiophene ketone sulphur is grand+and foramsulfuron+dimethyl tetrachloride three is mixed sets up 1+10+60,1+19+95,1 separately
+28+130、1+37+165、1+46+200、4.5+10+95、4.5+19+130、4.5+28+165、4.5+37+200、4.5+46+
60、8+10+130、8+19+165、8+28+200、8+37+60、8+46+95、11.5+10+165、11.5+19+200、11.5+28
+60、11.5+37+95、11.5+46+130、15+10+200、15+19+60、15+28+95、15+37+130、15+46+165g
25 dosage ratio processing of a.i./ha, separately set an auxiliary agent control, amount to 41 processing, be repeated 4 times.
5, test method
It sets in spray tower and sprays when corn 3-5 leaf phase, grass family and sedge weed 2-4 leaf phase, broadleaf weeds 3-5 leaf phase
Medicine (ASS-4 type pesticide spraying system, DG8003 spray head, atomisation pressure 2.75MPa, 30Kg/ mus of spouting liquid), to nature after application
It air-dries to be placed in greenhouse and cultivates observation.
6, crop is investigated
After application, investigating each processing corn, whether there is or not symptom of chemical damage, detailed record symptom of chemical damage, grade if having, 21 after medicine
It measures each processing corn fresh weight, calculates fresh weight inhibition rate, the safety with clear test medicine to corn.
4 phytotoxicity evaluation index of table
| Phytotoxicity classification | Phytotoxicity degree (%) | As a result it describes |
| 0 | 0 | Safety, no phytotoxicity |
| 1 | 1~10 | Without obvious phytotoxicity |
| 2 | 11~30 | Slight phytotoxicity |
| 3 | 31~50 | Moderate phytotoxicity |
| 4 | > 50 | Serious phytotoxicity |
7, weedy rices
Growth conditions, poisoning symptom and the phytotoxicity degree of periodical visual inspection observation weeds, record symptom of chemical damage after application.After medicine
The fresh weight preventive effect of each processing is calculated within 21 days using growth inhibition assay.
Growth inhibition assay calculation formula:
In formula:
E-fresh weight preventive effect, unit are percentage (%)；
T0- control weeds aerial part fresh weight, unit are gram；
T1- processing weeds aerial part fresh weight, unit are gram.
8, result and analysis:
Respectively preventive effect of the processing to weeds and the phytotoxicity classification to corn of table 5
It can be seen from Table 5 that the grand foramsulfuron dimethyl tetrachloride mixture of thiophene ketone sulphur is compared with single dose, in weight ratio
(1-15): (10-46): in (60-200) range, preventive effect to corn field main weeds and the safety of corn is above
Single dose, to corn safety.
In conclusion thiophene ketone sulphur is grand to have compounded significant synergy work with foramsulfuron and dimethyl tetrachloride in a certain range
With to crop safety, compound preparation is not only that corn field provides a kind of safe, practical herbicide, and greatly reduces
The cost of enterprise and peasant household.
It is raw to survey embodiment 3
Control Weeds in Maize Field field control effectiveness test I:
1, test process
(11) blank control
It tests and sets 11 processing, 4 repetitions, total 44 processing cells, every 20 square metres of processing plot area, random area
Group arrangement.It is watered 30 kilograms per acre, using 552 third type sprayers (aperture 0.7mm) even spraying.Field main weeds have barnyard grass
Grass, herba digitariae, Chenopodiaceae, Amaranthus retroflexus, rhizome of nutgrass flatsedge etc..
2, pilot project and method
(1) safety: after application, investigating the growth and development situation of corn, evaluates safety of the reagent agent to corn.
(2) herbicidal effect: every cell takes at 4 points at random, and every is investigated 1/4 square metre, investigation weed control in 30 days after application
Effect records weeds type and strain number respectively, calculates weeds strain preventive effect.
(3) test result
Safety: investigating after application, (1)~(5) chemicals treatment district corn plant height, leaf color and blank district basic one
It causes, (6)~(10) treatment region maize leaf somewhat turns to be yellow, and has a little hickie；Show reagent agent (1)~(5) 41.5%
The grand foramsulfuron dimethyl tetrachloride wettable powder of thiophene ketone sulphur is to corn safety.
Herbicidal effect is shown in Table 6:
Table 6 prevents and treats corn field weed field control effectiveness test result
As shown in Table 6, thiophene ketone sulphur is grand, foramsulfuron and dimethyl tetrachloride weight ratio are (1-15): (10-46): (60-
200) when to the strain preventive effect of corn field common weed between 92.46%~98.36%, it is better than (6)~(10) comparison medicament pair
The strain preventive effect of common weed.Wherein thiophene ketone sulphur is grand, foramsulfuron and dimethyl tetrachloride weight ratio are (4.5-11.5): (19-37):
To the strain preventive effect of corn field common weed all 95% or more when (95-165)；And thiophene ketone sulphur is grand, foramsulfuron and diformazan four
Preventive effect is more up to 98.36% when chlorine weight ratio is 8:28:130.Thus illustrate, thiophene ketone sulphur is grand, foramsulfuron and diformazan four
Chlorine is at weight ratio (1-15): (10-46): in (60-200) range, having preventive effect, and this herbicide to corn field common weed
Composition is to corn safety.
In conclusion instant component is reasonable, activity when preventive effect is administered alone better than each component, to corn field grass
Section, broad-leaved and sedge weed have good preventive effect, expand degrass spectrum, delay the development of weed resistance, right
Crop safety meets the security requirement of pesticidal preparations.
Claims (6)
1. a kind of herbicidal composition, which is characterized in that the herbicidal composition grand, foramsulfuron and two comprising thiophene ketone sulphur
Three kinds of active constituents of first tetrachloro, the weight ratio of three kinds of active constituents are (1~15): (10~46): (60~200).
2. herbicidal composition according to claim 1, which is characterized in that three kinds of active constituents thiophene ketone sulphur is grand, first
The grand weight ratio with dimethyl tetrachloride of amide sulphur is (4.5~11.5): (19~37): (95~165).
3. herbicidal composition according to claim 1, which is characterized in that three kinds of active constituents thiophene ketone sulphur is grand, first
The grand weight ratio with dimethyl tetrachloride of amide sulphur is 8:28:130.
4. herbicidal composition according to claim 1, which is characterized in that the active constituent is in herbicidal composition
Weight percentage be 10-85%.
5. herbicidal composition according to claim 1, which is characterized in that the herbicidal composition can be prepared into can
Wet powder, water dispersible granules and suspending agent.
6. the application in any one of the claim 1-5 herbicidal composition Control Weeds in Maize Field.
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| CN106577713A (en) * | 2015-10-19 | 2017-04-26 | 重庆安尚园农业科技发展有限公司 | Formamido-sulfuron and MCPA-Na salt compound herbicide |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106577713A (en) * | 2015-10-19 | 2017-04-26 | 重庆安尚园农业科技发展有限公司 | Formamido-sulfuron and MCPA-Na salt compound herbicide |
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