CN105580827B - A kind of herbicidal composition containing methabenzthiazuron and florasulam - Google Patents
A kind of herbicidal composition containing methabenzthiazuron and florasulam Download PDFInfo
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- CN105580827B CN105580827B CN201610146011.XA CN201610146011A CN105580827B CN 105580827 B CN105580827 B CN 105580827B CN 201610146011 A CN201610146011 A CN 201610146011A CN 105580827 B CN105580827 B CN 105580827B
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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<
- A01N47/36—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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- 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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Abstract
The invention belongs to pesticide herbicide technical fields, and in particular to be suitable for a kind of herbicidal composition containing methabenzthiazuron and florasulam of wheatland.The weight ratio of active ingredient methabenzthiazuron and florasulam ranging from 25:1 to 1600:1.The present invention expands herbicide controlling spectrum, enhances preventive effect, and avoiding to prevent and kill off using single herbicide can cause Weed Resistance quickly to occur, and delays the generation of herbicide resistance, reduces dosage, reduces use cost, mitigates environmental pollution.
Description
Technical field
The invention belongs to pesticide herbicide technical fields, and in particular to one kind suitable for wheatland contain methabenzthiazuron and
The herbicidal composition of florasulam.
Background technology
Wheat is one of China's staple food crop, and cultivated area and total output are only second to rice, national cultivated area
Up to more than 3,000 ten thousand hectares, about 4.5 hundred million mu, the 22%-30% of national cultivated area, the about 20%- of cereal crops sown area are accounted for
27%, about 100,000,000 tons of wheat total output reaches the 22% of total output of grain（Wu Mingrong etc., 2013, pesticide）.Wheat is that China is main
Commodity food and strategic reserves grain kind, in grain-production, circulation and consumption have critical role, development Wheat Production to me
State's national economic development and people's lives are of great significance.According to national weeds reconnaissance information, China's wheat weeds type
There is more than 200 kinds, crop smothering area accounts for 30% or more of wheat planting area, and loss accounts for about the 15% of wheat total output.Therefore wheatland
Control of weeds is one of important process of wheat planting.
Herbicide is the common measure of current wheat weeds prevention, to promoting wheat yield to improve and saving planting cost tool
There is important role.But long-term, the large scale application of herbicide, there are Weed Resistance, kinds for farmland weed chemical control
Group's succession and drug injury problem are on the rise, and seriously affect the safety of the high yield and good harvest and succession crop of wheat（Wei Youhai, Hubei
Agricultural sciences, 2011.4）.Currently, commonly using medicament in wheatland, there are some drawbacks.As sulfonylurea herbicide tribenuron-methyl, benzyl are phonetic
The grand dosage of sulphur is excessively high and cause poisoning to succession crop peanut, soybean using meeting too late.Phenoxy carboxylic acid herbicides 2,4- drop fourths
Ester, mcpa sodium dosage it is excessively high and application it is improper easily cause chemical injury of crops generate drift neighbouring dicotyledonous crops can be produced
Crude drug is done harm to.
Single herbicide, which is used for a long time, and prevents and kill off can cause susceptible weeds quantity to decline, in insensitive or malignant weed quantity
It rises, weed community is caused to change.In the winter wheat producing region of herbicide single use, weed community in wheat field has occurred serious
Variation, the malignant weed that a variety of herbicides such as clearvers, wartwort, grandmother's sodium, shepherd's purse are difficult to prevent increases year by year, and serious shadow
The harvest of wheat crop yield is rung.
Florasulam（florasulam）It is by Dow agricultural sciences（Dow Agroscience）Company's exploitation
Triazolopyrimidine sulfonamides herbicide.Chemical name：2 ', 6 '-two fluoro- 5- methoxyl groups -8- fluorine [1,2,4] triazol [1,5-
C] pyrimidine -2- sulfonanilides；2’,6’-difluoro-5-methoxy-8-fluoro[1,2,4]triazo-lo[1,5-c]
Pyrimidine-2-Sulfonanilide；CAS accession number：[145701-23-1].Florasulam is typical acetolactic acid
Synzyme（ALS）Inhibitor is caused by inhibiting the ALS enzymatic activitys in plant to prevent the biosynthesis of branched-chain amino acid
The synthesis of protein is destroyed, to make the mitosis of plant cell stop at S phases (DNA synthesizes the phase) and the G2 in Gl stages
The M phases in stage disturb the synthesis of DNA, therefore cell cannot complete mitosis, so make its ontology growth stop and it is dead
It dies, ultimately causes Plant death.Florasulam is inner-adsorption conduction-type herbicide, can be absorbed by plant leaf blade and root system, is being divided
It accumulates in raw tissue and keeps plant gradually dead.Typically poisoning symptom is：Leaf chlorosis, albefaction or purpling, shortened internodes, top
Bud is dead, and final complete stool is dead.The herbicide has the advantages of bioactivity high broad weed-killing spectrum, due to its action target ALS enzymes
It is not related to humans and animals, therefore this kind of herbicide has very high safety to humans and animals.Florasulam is mainly used for seedling
Rear defence except winter wheat field broad leaved weed such as clearvers, chickweed, Polygonum weeds, compositae weeds etc., usage amount be only 3-10g effectively at
[mu dosage is 0.2-0.67g to part/hectare（a.i）].Florasulam is that cauline leaf process is prevented and kill off the wide spectrum of broad leaved weed and removed after seedling
Careless chaste tree, per hectare dosage 5g can effectively prevent and kill off China pink material, madder material, Convolvulaceae, Malvaceae, knotweed, and field is important miscellaneous
Careless such as chickweed, clearvers, black nightshade, volume stem smartweed are very sensitive to its.The pig calamity of plant height 20cm can be prevented and kill off with the dosage of 5g/hm2
Calamity, 2.5g can prevent and kill off the chickweed of 6 leaf periods, and 5g can prevent chickweed and the german chamomile in fertility late period etc. completely（Zhang Meifeng etc., it is modern
Day pesticide, 2011/7）.Song Guochun etc. the study found that half-life period of the florasulam in wheat plant is respectively 2.0-5.8d,
82% or more 14d resolutions after medicine.The half-life period of florasulam in the soil is 5.5-9.6d, 80% or more 21d resolutions after medicine（Mountain
Eastern agricultural sciences, 06 phase in 2015）.Shandong Agricultural University recent studies have found that, Wheat Cultivars are to the resistance to of florasulam
Pharmacological property differs greatly (Liu Gang, pesticide market information, 2012/18 phase), and when use should be noted that.
Methabenzthiazuron, Chinese synonym are：Methabenz thiazuron, winter sowing is grand, and section is broadcast rather, first benzthiazuron, methabenzthiazuron, N-2-
Benzothiazolyl-N, N'- dimethyl urea;N-2- benzothiazolyl-N, N '-dimethyl urea;1- (benzothiazole -2- bases) -1,3-
Dimethyl urea.English name is Methabenzthiazuron, and English synonym is：S25128, B-74283, bay74283,
TRIBUNIL, Trubunil, BAY-5653, bayer5633, TRIBUNIL (R), preparation5633,
methbenzthiazuron.CBNumber is CB9197088, and No. CAS is 18691-97-9.Methabenz thiazuron is before a seed bud, after bud
The broad-spectrum herbicide for preventing and kill off the weeds in wheat, beans has many unifacial leaves, broadleaf weed and good prevents and kill off work
With.Mainly by root absorption, weeds are dead in 14-20d after administration.Phenyl ureagroup herbicides, by inhibiting plant photosynthesis
Hill reaction in crop reaches weeding purpose.15~22.5g/100m of cornfield herbicidal dosage2.Since medicament mainly passes through
Root absorption, so soil should moisten when dispenser.It is invalid to the weeds bred by root system.It is safer to succession crop.It should not apply
For spring barley.Usually it is slightly harmful to water body, undiluted or large-tonnage product is not contacted into underground water, water channel or sewage
Material is not discharged into ambient enviroment by system without governmental approval.
With the development of Development of China's Urbanization, rural laborer is largely transferred to cities and towns, and concentration of landholdings degree improves, wheatland
Control of weeds is more and more stronger to the dependence of herbicide.Efficiently, low toxicity, low-residual, small succession crop harm are current herbicides
The important directions of research and development.
Existing insufficient in actual application in order to make up above each single dose, the present inventor furthers investigate,
It is had been surprisingly found that on the basis of a large amount of formula indoor screening and field control effectiveness test, herbicidal composition of the invention is centainly being matched
Than being compounded in range, there is excellent control effect, the preventive effect shown and activity level to exceed each group weeds of wheat
The superposition divided has unexpected synergistic function, solves above two herbicide in herbicide controlling spectrum, preventive effect and safety
Existing limitation has achieved the purpose that expand herbicide controlling spectrum, has improved preventive effect, improves safety, can meet current agricultural to removing
The demand of careless agent.
Invention content
It is an object of the invention to the defect for current wheat field herbicide, a kind of broad weed-killing spectrum, herbicidal effect are provided
It is good, safe to use, be conducive to the herbicidal composition of weeds of wheat comprehensive treatment.
Present invention employs following technical solutions：
The present invention relates to a kind of herbicidal composition containing methabenzthiazuron and florasulam.
Technical solution of the present invention, it is characterised in that：The weight ratio model of active ingredient methabenzthiazuron and florasulam
Enclose is 25:1 to 1600:1.
Another preferred scheme of the invention, it is characterised in that：The weight of active ingredient methabenzthiazuron and florasulam
It is 50 to measure proportional region:1 to 800:1.
Another preferred scheme of the invention, it is characterised in that：The weight of active ingredient methabenzthiazuron and florasulam
It is 100 to measure proportional region:1 to 400:1.
Another preferred scheme of the invention, it is characterised in that：The weight of active ingredient methabenzthiazuron and florasulam
Amount ratio position 100:1 or 200:1、300:1、400:1 .
The present invention relates to a kind of herbicidal composition preparation, which is missible oil, aqueous suspension agent, oil hang
Floating agent, wettable powder, granule or water dispersible granules, herbicidal composition preparation are included in pesticide-acceptable, one kind
Or it is a variety of selected from wetting agent, emulsifier, dispersant, thickener, antifreezing agent, disintegrant, binder, antifoaming agent, carrier or filling
The auxiliary agent of agent.
The present invention relates to purposes of the Herbicidal combinations in preventing weeds of wheat, the weeds of wheat is
The weeds such as wheat paddock broad leaved weed Descurainia sophia, shepherd's purse, clearvers and grassy weed bromegrass, amur foxtail, hard grass, Wang grass.
Herbicidal composition of the present invention can also add carrier, emulsifier, dispersant, wetting in addition to two kinds of active ingredient
The auxiliary agent that agent, disintegrant, thickener, adhesive etc. agriculturally allow, according to well known to a person skilled in the art methods to be processed into
A variety of dosage forms of the suitable agricultural use such as water dispersible granules, oil-suspending agent, wettable powder, granule.
Emulsifier is the compound of one or more anion, nonionic surfactant, and nonionic surfactant is such as
Fatty acid esters of sorbitan, alkylphenol-polyethenoxy polyethenoxy ether, polyoxyethylene alkyl amine etc., anion surfactant
Such as calcium dodecyl benzene sulfonate, neopelex can be one such or two or more composition.Dispersion
Agent can be selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, alkyl phenol polyoxyethylene ether, dodecyl benzene sulfonic acid
It is one or more in sodium, alkyl polyoxyethylene ether sulfonate or in alkylphenol-polyethenoxy base ether formaldehyde condensation products；Wetting agent
Naphthalene sulfonate, lauryl sodium sulfate, Teepol, fatty alcohol polyoxyethylene ether, Nonyl pheno can be selected from
It is one or more in ether, sorbitan fatty acid ester polyoxyethylene ether, alkylsulfonate；Disintegrant can be selected from sulfuric acid
Ammonium, urea, starch and its derivative, low-substituted hydroxypropyl cellulose, polyvinylpyrrolidone, sodium alginate, calcium chloride, chlorination
It is one or more in sodium, magnesium chloride, aluminium chloride；Adhesive can be selected from hydroxyethyl cellulose, soluble starch, poly- second two
Alcohol, methylcellulose, polycarboxylic acid and water-soluble high-molecular compound sodium carboxymethylcellulose, polyvinyl alcohol, paraffin, gypsum,
It is one or more in hydroxypropyl methyl cellulose, polyacrylamide；Carrier can be selected from white carbon, kaolin, bentonite, light
In matter calcium carbonate, gypsum, attapulgite, urea, sucrose, diatomite, bentonite, ammonium sulfate, urea, potassium dihydrogen phosphate, clay
It is one or more.
Advantageous effect：
1. having expanded herbicide controlling spectrum.Methabenzthiazuron to weeds of wheat broad leaved weed Descurainia sophia, shepherd's purse, clearvers and
Grassy weed amur foxtail, hard grass, Wang grass etc. have good effect, but relatively slightly poor to the weeds such as bromegrass, annual bluegrass effect；
Florasulam has good effect to broad leaved weed Descurainia sophia, clearvers, invalid to grassy weed amur foxtail and hard grass.
Methabenzthiazuron has complementary advantages after being compounded with florasulam, to wheat paddock broad leaved weed Descurainia sophia, shepherd's purse, clearvers and standing grain
Undergraduate course weeds bromegrass, amur foxtail, hard grass, Wang grass have good effect.
2. enhancing preventive effect.Methabenzthiazuron is addition and has increasing with interaction type after florasulam compounding
Effect acts on, preventive effect enhancing, better than effect is applied alone.
Weed Resistance can be caused quickly to occur 3. avoiding and being prevented and kill off using single herbicide, delay the hair of herbicide resistance
It is raw.
4. reducing dosage, use cost is reduced, mitigates environmental pollution.
Specific implementation mode
The present invention will be further described With reference to embodiment, but the present invention should not be interpreted as limited to these
Embodiment.
Embodiment 1 prepares methabenzthiazuron（200g）And florasulam（1g）Aqueous suspension agent
Use 96% methabenzthiazuron（methabenzthiazuron）Active compound, 94% florasulam（florasulam）
Active compound prepares aqueous suspension agent.It weighs quantitative methabenzthiazuron, florasulam active compound respectively with electronic balance, is first added special
After emulsifier dissolving, the n,N-Dimethylformamide for adding 2 times is diluted to being completely dissolved with 0.1% Tween-80 aqueous solution
It is spare at 1% aqueous suspension agent.It is prepared into active ingredient methabenzthiazuron（200g）And florasulam（1g）Compound aqueous suspension agent.
Embodiment 2 prepares methabenzthiazuron（200g）And florasulam（2g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 3 prepares methabenzthiazuron（200g）And florasulam（4g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 4 prepares methabenzthiazuron（200g）And florasulam（8g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron florasulam active compound and is prepared with embodiment 1.
Embodiment 5 prepares methabenzthiazuron（400g）And florasulam（1g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 6 prepares methabenzthiazuron（400g）And florasulam（2g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 7 prepares methabenzthiazuron（400g）And florasulam（4g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 8 prepares methabenzthiazuron（400g）And florasulam（8g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 9 prepares methabenzthiazuron（800g）And florasulam（1g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 10 prepares methabenzthiazuron（800g）And florasulam（2g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 11 prepares methabenzthiazuron（800g）And florasulam（4g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 12 prepares methabenzthiazuron（800g）And florasulam（8g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 13 prepares methabenzthiazuron（1600g）And florasulam（1g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 14 prepares methabenzthiazuron（1600g）And florasulam（2g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 15 prepares methabenzthiazuron（1600g）And florasulam（4g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
It is prepared by embodiment 16（Methabenzthiazuron 1600g）And florasulam（8g）Compound aqueous suspension agent
Formulation method weighs methabenzthiazuron and is prepared by florasulam active compound with embodiment 1.
Embodiment 17 prepares 50% methyl tribenuron-methyl florasulam（methabenzthiazuron+ florasulam）
SC（100:1）Suspending agent
According to 100:1 proportioning weighs 96% quantitative methabenzthiazuron（methabenzthiazuron）Active compound, 94% pair
Penoxsulam（florasulam）Active compound crushes sieving, addition dispersant, thickener, antiprecipitant, antifoaming agent, antifreezing agent
And water, then sticky flowable suspended substance made of ultramicro grinding is carried out using wet method.
Embodiment 18 prepares 50% methyl tribenuron-methyl florasulam（methabenzthiazuron+ florasulam）
SC（200:1）Suspending agent
According to 200:1 proportioning weighs 96% quantitative methabenzthiazuron（methabenzthiazuron）Active compound, 94% pair
Penoxsulam（florasulam）Active compound crushes sieving, addition dispersant, thickener, antiprecipitant, antifoaming agent, antifreezing agent
And water, then sticky flowable suspended substance made of ultramicro grinding is carried out using wet method.
Embodiment 19 prepares 50% methyl tribenuron-methyl florasulam（methabenzthiazuron+ florasulam）
SC（300:1）Suspending agent
According to 300:1 proportioning weighs 96% quantitative methabenzthiazuron（methabenzthiazuron）Active compound, 94% pair
Penoxsulam（florasulam）Active compound crushes sieving, addition dispersant, thickener, antiprecipitant, antifoaming agent, antifreezing agent
And water, then sticky flowable suspended substance made of ultramicro grinding is carried out using wet method.
Embodiment 20 prepares 50% methyl tribenuron-methyl florasulam（methabenzthiazuron+
florasulam）SC（400:1）Suspending agent
According to 400:1 proportioning weighs 96% quantitative methabenzthiazuron（methabenzthiazuron）Active compound, 94% pair
Penoxsulam（florasulam）Active compound crushes sieving, addition dispersant, thickener, antiprecipitant, antifoaming agent, antifreezing agent
And water, then sticky flowable suspended substance made of ultramicro grinding is carried out using wet method.
21 laboratory experiment of embodiment
1）Experimental condition
It is Descurainia sophia for examination weeds（Descurainia sophia (L.) webb）, clearvers（Galium aparina
L.）, amur foxtail（Alopecurus aequalis Sobl..）, hard grass（Sclerochloa kengiana(Ohwi)
Tzvel.）.The culture of experiment examination material, 15~25 DEG C of temperature, natural lighting are carried out in the glasshouse for having heating.It will quantify
Descurainia sophia, clearvers, amur foxtail, hard grass seed be sowed in the plastic tub of a diameter of 9 cm, 1~2 mm of weeds earthing is put into
In enamel tray equipped with water, water is allowed gradually to penetrate into, it is for use to be transferred to phjytotron after waiting water to be seeped into native table.
In addition to 1~2 day after spray cannot water, the periodically moisturizing in a manner of the infiltrating irrigation of bottom, to keep soil moisture.
2）Experimental design
Reagent agent is 96% methabenzthiazuron（methabenzthiazuron）Active compound, 94% florasulam
（florasulam）Aqueous suspension agent in active compound and embodiment 1~16.
Dosage is arranged, and methabenzthiazuron sets 200,400,800,1600 ga.i./ha, florasulam sets 1,2,4,
8ga.i./ha, methabenzthiazuron and florasulam compound aqueous suspension agent dosage according to the numerical value in embodiment 1~16.
It is tested in hard grass, 1 heart stage of 2 leaf of amur foxtail；3~5 leaf phase of Descurainia sophia；Clearvers 1~2 is taken turns compound leaf phase cauline leaf and is uniformly sprayed
Mist processing.
Sprinkling system, Fan spray head, in conjunction with sprinkler pressure, flow etc., by practical spray face are automatically controlled using ASS-4 types
Product（1.1 m2）Spray 50 mL liquids（Equivalent 30 kg of mu water consumption）, the speed of service has been debugged, pending plastic tub is equal
It is even to be arranged on spraying platform, even spraying processing.0.4 KPa of atomisation pressure, Fan spray head flow 800mL/min.Extremely by low amounts
A large amount sprays successively.Often processing is repeated 4 times.
3）Test result calculates
With synergy type of the Gowing methods evaluation after mixed.
Gowing law theory preventive effect calculating formulas are：
E0=X+Y ×（100-X）÷100
X, Y are respectively the anti-valid value of actual measurement of two single doses in formula（%）, E is the anti-valid value of actual measurement that different ratio is used with（%）,
E0For theoretical anti-valid value（%）.As E- E0Between -10~10 when for addition, E- E0>It is synergistic effect when 10, E- E0<-
It is antagonism when 10.
1 methabenzthiazuron of table and florasulam mixture synergy laboratory experiment
As shown in Table 1, methabenzthiazuron has good effect to weeds of wheat Descurainia sophia, amur foxtail, hard grass, is brought disaster to pig
Calamity also has certain preventive effect；Florasulam has good effect to broad leaved weed Descurainia sophia, clearvers, to grassy weed
Amur foxtail and hard grass are invalid.
As shown in Table 1, Descurainia sophia effect is increased after methabenzthiazuron and florasulam compounding, E-E0 values are just table
It is now addition.Weight ratio is 400:E-E0 values are up to 2.4 when 1, and followed by weight ratio is 200:E-E0 values are when 1
2.2, be again weight ratio be 100:E-E0 values are 2.1 when 1.It is known that methabenzthiazuron and florasulam weight ratio
25:1 to 1600:Descurainia sophia effect is increased between 1, is secondly 50:1 to 800:1, optimal is 100:1 to 400:1.
As shown in Table 1, clearvers effect is increased after methabenzthiazuron and florasulam compounding, E-E0 values are just table
It is now addition or synergy.Weight ratio is 200:E-E0 values are up to 10.1 when 1, and followed by weight ratio is 400:When 1
E-E0 values be 6.8, be again weight ratio be 100:E-E0 values are 5.6 when 1.It is known that methabenzthiazuron and florasulam
Weight ratio 25:1 to 1600:Descurainia sophia effect is increased between 1, is secondly 50:1 to 800:1, optimal is 100:1 to 200:
1。
As shown in Table 1, amur foxtail effect is increased after methabenzthiazuron and florasulam compounding, E-E0 values are just table
It is now addition.Weight ratio is 200:E-E0 values are up to 5.7 when 1, and followed by weight ratio is 400:E-E0 values are when 1
4.1, be again weight ratio be 100:E-E0 values are 4 when 1.It is known that methabenzthiazuron and florasulam weight ratio
25:1 to 1600:Descurainia sophia effect is increased between 1, is secondly 50:1 to 800:1, optimal is 200:1 to 400:1.
As shown in Table 1, hard grass effect is increased after methabenzthiazuron and florasulam compounding, E-E0 values are just performance
For addition or synergistic effect.Weight ratio is 100:When 1, effect is best, and E-E0 values are 10.2, and followed by weight ratio is
200:When 1 E-E0 values be 7.2, be again weight ratio be 100:E-E0 values are 6.9 when 1.It is known that methabenzthiazuron with it is double
Penoxsulam weight ratio 25:1 to 1600:Descurainia sophia effect is increased between 1, is secondly 50:1 to 800:1, optimal is 100:
1 to 200:1.
In conclusion methabenzthiazuron has complementary advantages after being compounded with florasulam, to Descurainia sophia, clearvers, hard grass, see
Wheat ma has good effect, compounding effect to belong to addition or synergistic effect.
22 field control effect of embodiment measures
1. experimental condition
1）The selection of crop and cultivar
Wheat breed is Jimai sowing on October 9th, 22,2014, sows 15 kilograms per acre, line-spacing 18cm.
2）The selection of subjects weeds
Descurainia sophia（Descurainia sophia(L.) webb）, clearvers（Galium aparinaL.）, hard grass
（Sclerochloa kengiana(Ohwi)Tzvel.）, amur foxtail（Alopecurus aequalisSobl.）Deng.
3）Cultivation condition
Experiment wheat paddock is located at the progress of the Shandong Province Tai'an buildings the Xu Jia village office Xia Jia, 50 mu of testing ground area, surrounding
Crop is wheat.It is experimental field loam, it is multiple to apply 50 kilograms of formula fertilizer when wheat cultivation for the content of organic matter 1.8%, pH value 7.15
Hefei, jointing stage apply 10 kilograms of urea.Soil moisture content RH when dispenser（%）It is 50 or so.
It is smooth to test topography, management is consistent, and it is preferable that fertility and water pour condition.Experimental field water 2 times.Overwintering water is poured before overwintering
（At the beginning of 11 months）, pulp-water is poured after wheat fallen flowers（Mid-May）.
Experimental field preceding stubble maize planting, herbicide used are mesotrione and atrazine.
2. experimental design
1）Test medicine
70% methabenzthiazuron（methabenzthiazuron）WP, 50g/L florasulam（florasulam）SC, 50%
Methyl tribenuron-methyl florasulam（methabenzthiazuron+ florasulam）SC （Methabenzthiazuron：Double fluorine sulphur grass
Amine weight ratio is respectively 10:1、200:1、300:1、400:1）, i.e. embodiment 17-20 preparations.
2）Application method
Spraying instrument is noncomparable advanced knapsack sprayer, tests each processing and is watered 450 liters of even sprayings by per hectare.
In the processing of 2~5 leaf phase of winter wheat field annual grassy weeds cauline leaf even spraying.
3）Spraying time and number
It tests and is carried out on March 19th, 2015, dispenser is primary altogether.Wheat is in period of seedling establishment when dispenser, grows fine；Field
2~5 leaf phase of weeds, based on Descurainia sophia, clearvers, hard grass, amur foxtail.
3. drug effect computational methods
Calculation formula：
Control effect (%)=(weeds stubble number after the check plot number of weeds-treatment region medicine) check plots ÷ number of weeds × 100
Fresh weight preventive effect (%)=(blank district fresh grass weight-treatment region fresh grass weight) ÷ blank district fresh grass weight
×100
2 50% methyl tribenuron-methyl florasulam SC of table is applied to wheat paddock field efficacy measurement and (adjusts within 30 days after dispenser
It looks into)
As shown in Table 2,70% methabenzthiazuron WP is excellent to Descurainia sophia, hard grass effect, preferable to clearvers, shepherd's purse effect；
50g/L florasulams SC is excellent to Descurainia sophia, clearvers, shepherd's purse effect, invalid to hard grass；50% methyl of the two complex preparation
Benzthiazuron florasulam SC, which respectively matches comparison Descurainia sophia, clearvers, shepherd's purse, hard grass, good effect, is omited to hard grass effect
It is worse than other weeds.
50% methabenzthiazuron florasulam SC（200:1）Preventive effect is best, and total strain preventive effect reaches 97.2%, fresh weight preventive effect
Reach 98.2%.Followed by 50% methabenzthiazuron florasulam SC（300:1）.The complex preparation preventive effect of other two kinds of ratios
Also single use is substantially exceeded.
By range estimation, herbicide damage, 50% methabenzthiazuron florasulam is not observed in field experiment
SC is to wheat safety.
Compared with one of which active ingredient is used alone, present invention compounding expands herbicide controlling spectrum, and a dispenser can be controlled
Weeds in fabrication entire growth period, not only herbicidal effect is notable, but also environmentally friendly, right on second stubble crop without influence
The pollution of environment is small, to people, animal, birds and beneficial organism safety, is conducive to keep ecological balance.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, several improvement and combination can also be made, these are improved and combination is also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of herbicidal composition containing methabenzthiazuron and florasulam, it is characterised in that：Active ingredient methylbenzene
The grand weight ratio with florasulam of thiophene is 100:1 or 200:1.
2. a kind of herbicidal composition containing methabenzthiazuron and florasulam, feature exist according to claim 1
In：The dosage of active ingredient methabenzthiazuron and florasulam is 200+2 g ai/ha or 800+4 g ai/ha.
3. according to a kind of combinations of herbicides containing methabenzthiazuron and florasulam of claim 1-2 any one of them
Object, which is characterized in that the preparation of the herbicidal composition be missible oil, aqueous suspension agent, oil-suspending agent, wettable powder,
Granula or water dispersible granules, herbicidal composition preparation be included in it is pesticide-acceptable, it is one or more selected from wetting agent, breast
The auxiliary agent of agent, dispersant, thickener, antifreezing agent, disintegrant, binder, antifoaming agent, carrier or filler.
4. a kind of herbicidal composition containing methabenzthiazuron and florasulam according to claim 3 is small in prevention
Purposes in wheat weeds, the weeds of wheat are wheat paddock broad leaved weed clearvers and grassy weed hard grass.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103145A (en) * | 1986-04-30 | 1988-05-11 | 先灵农业化学品公司 | Weedicide |
| CN1761395A (en) * | 2003-03-13 | 2006-04-19 | 巴斯福股份公司 | Synergistic herbicidal mixtures |
| CN102302027A (en) * | 2011-06-30 | 2012-01-04 | 陕西美邦农药有限公司 | Herbicidal composition containing florasulam |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103145A (en) * | 1986-04-30 | 1988-05-11 | 先灵农业化学品公司 | Weedicide |
| CN1761395A (en) * | 2003-03-13 | 2006-04-19 | 巴斯福股份公司 | Synergistic herbicidal mixtures |
| CN102302027A (en) * | 2011-06-30 | 2012-01-04 | 陕西美邦农药有限公司 | Herbicidal composition containing florasulam |
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