CN109699669A - A kind of ternary weeding composition and its application for corn field weed - Google Patents
A kind of ternary weeding composition and its application for corn field weed Download PDFInfo
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- CN109699669A CN109699669A CN201910148183.4A CN201910148183A CN109699669A CN 109699669 A CN109699669 A CN 109699669A CN 201910148183 A CN201910148183 A CN 201910148183A CN 109699669 A CN109699669 A CN 109699669A
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- flazasulfuron
- florasulam
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- weeds
- isoxaflutole
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Abstract
The invention belongs to composition pesticide fields, specifically provide a kind of ternary weeding composition for corn field weed and its application, flazasulfuron, and the weight proportion of isoxaflutole and florasulam is 1-5: 1-10: 1-5；The ternary weeding composition is used for Control Weeds in Maize Field.
Description
Technical field
The invention belongs to composition pesticide fields, and in particular to a kind of ternary weeding composition for corn field weed and
It is applied.
Background technique
Corn is grain and the forage crop of China's weight, and plantation interview is slightly inferior to wheat and rice, with maize seed
The expansion of area is planted, farmland weed is the important link for restricting corn yield, and compound weeding becomes the key for solving the problems, such as this.
Flazasulfuron is absorbability translocated herbicide, and the mechanism of action is ALS inhibitor, can be by when doing cauline leaf process
Plant absorbs rapidly and conducts in vivo, inhibits the activity of plant acetolactate synthase (ALS), and then inhibit weeds intracorporal
The synthesis of branched-chain amino acid (leucine, isoleucine) hinders the synthesis and other metabolic processes of protein, causes weeds dead
It dies.Existing research shows that flazasulfuron can effectively prevent and kill off a variety of gramineae weeds, broadleaf weeds and annual or perennial nutgrass flatsedge
Section weeds.
Isoxaflutole is p-hydroxybenzene pyruvic acid (HPP) ester dual oxide enzyme inhibitor, and action character is that have removing for wide spectrum
It is careless active, it can be used before seedling and after seedling, death after albefaction occur in weeds.It is mainly used for preventing and kill off gramineae weed such as herba digitariae, horse
Bitterroot, knucklegrass, millet, faber bristlegrass herb, herba setariae viridis etc. and broadleaf weeds such as piemarker, Amaranthus retroflexus, american ragweed, Chenopodiaceae, Mandala, Bin Zhou
Knotweed, black nightshade, lady's thumb etc. are mainly used for corn, beet.
Florasulam is a kind of triazolo pyrimidine class ALS inhibitor, has bioactivity height, the low, broad weed-killing spectrum of dosage etc.
Feature all has good preventive effect to wheat paddock, corn field a variety of broadleaf weeds such as Descurainia sophia, shepherd's purse, clearvers etc., but existing
Scholar reports the weeds such as clearvers, the volume stem smartweed in Canada area to which create resistances.Different types of herbicide mixture is not
Activity of weeding can be only improved to a certain extent, expands degrass spectrum, and weeds can also be delayed to generate resistance to it, therefore, choosing
Select a kind of herbicide is particularly important with florasulam scientific compatibility.Therefore the compounding of pesticide is between different role mechanism
Current research focus in the field of pesticide.
Summary of the invention
The purpose of the present invention is to provide a kind of component is reasonable, drug cost is low, is not likely to produce the herbicide group of drug resistance
Close object, to gramineae weed, broadleaf weeds and nutgrass flatsedge have preferable control efficiency, to slow down Weed Resistance, reduce drug
Dosage etc. has positive effect.
The present invention provides following technical scheme
A kind of ternary weeding composition for corn field weed, active constituent is by flazasulfuron, isoxaflutole and double
Penoxsulam composition；The weight proportion of the flazasulfuron, isoxaflutole and florasulam is 1-5: 1-10: 1-5.
Ternary weeding composition of the present invention, it is characterised in that: flazasulfuron, isoxaflutole and florasulam
Weight proportion be (0.5-5): 3: 1；It is preferred that the weight proportion of flazasulfuron, isoxaflutole and florasulam is 1: 3: 1.
Ternary weeding composition of the present invention, flazasulfuron, isoxaflutole and florasulam are in the composition
Total weight percentage composition be 1-90%.
Ternary weeding composition of the present invention, the flazasulfuron, isoxaflutole and florasulam are combining
Total weight percentage composition in object is 10-70%.
Ternary weeding composition of the present invention is used for the purposes of Control Weeds in Maize Field；The preferred weeds are excellent
It is selected as grass family and broadleaf weeds and nutgrass flatsedge.The weeds include purslane, Descurainia sophia, herba stellariae mediae, elscholtiza, Siberian cocklebur, barnyard grass, ox
Muscle grass, difformed galingale herb, Horseweed Herb, nutgrass flatsedge, rhizome of nutgrass flatsedge etc..
The present composition can be prepared into adaptation dosage form, preferred dosage form wettable powder with agriculturally acceptable auxiliary combination
Agent, suspending agent, oil-suspending agent, microemulsion, suspended emulsion, water dispersible granules etc..Auxiliary agent of the present invention includes emulsifier, divides
Powder, wetting agent, binder, disintegrating agent, thickener, stabilizer, antifreezing agent, defoaming agent filler etc..
The present invention obtains following advantageous effects:
Composition of the present invention can effectively reduce the generation of herbicide resistance, expand degrass spectrum；Standing grain is used for when available
The prevention and treatment of undergraduate course weeds and broad-leaved and nutgrass flatsedge weeds.Herbicidal combinations of the present invention have significant synergies, can
To effectively reduce the administration dosage of active constituent, reduce environmental pollution, while to crop safety.
Specific embodiment
Below with reference to embodiment, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Embodiment 1: indoor toxicity test of the Herbicidal combinations to purslane.
Full seed, consistent weeds uniform in size are selected, water seed soaking is first used, then with dark gauze shading, is placed on
It is covered in the culture dish of sponge, carries out vernalization with water-wet profit, sowed after waiting seeds to show money or valuables one carries unintentionally.Test uses content of organic matter 12.5g/
The air-dried loam that kg, pH value 7.5, permeability are good, are sieved.Test soil is quantitatively filled at the 4/5 of flowerpot, then from basin bottom
Portion pours, and moistens soil completely to saturation state.It is broadcasted sowing pretreated for examination weeds equal and quantitative in soil surface, according to
Seed size earthing, move into 24-27 DEG C of solar temperature, 15-18 DEG C of nocturnal temperature, relative humidity 65%-75% controllable daylight
It is cultivated in greenhouse.Thinning singling after weeds emergence, leaves and takes that growing way is consistent weeds and to guarantee consistent in density for examination, to broadleaf weeds
Length carries out cauline leaf spraying treatment with raw spray tower of surveying to 3 leaf periods.
Using weeds potting bioassary method, if not being administered blank control.4 repetitions of every processing.At cauline leaf even spraying
Reason, is accurately calculated by accurate spray tower spraying area and is prepared required medical fluid, atomisation pressure 2kg/m2, Conic nozzle flow
100mL/min.The damage symptoms of weeds are recorded after application in detail.30d weighs each processing weeds aerial part fresh weight after medicine, calculates
Fresh weight preventive effect.Regression analysis is carried out to the logarithm of drug dose and the probability value of preventive effect with DPS statistical software, weeds must be inhibited
The doses (LC50) of growth 50%.Synergy type and suitable proportion after being used with using co-toxicity coefficient method evaluation,
Criterion: CTC < 80 is antagonism, is summation action between 80-120, and CTC > 120 is synergistic effect.Fresh weight preventive effect
(%)=(blank control fresh grass weight-treatment region fresh grass weight)/blank control fresh grass weight × 100.
1 flazasulfuron of table, isoxaflutole and florasulam compounding are to purslane indoor toxicity test
As seen from the above table, isoxaflutole and florasulam have purslane in 1: 5-10: 1 ratio range fine
Synergistic effect, when especially isoxaflutole and florasulam proportion is 3: 1, CTC 166.2 has significant synergy
Effect.
2 flazasulfuron of table, isoxaflutole and florasulam compounding are to purslane indoor toxicity test
As seen from the above table, flazasulfuron, isoxaflutole and florasulam compounding weight ratio are (0.5-5): when 3: 1,
There is synergistic function to purslane.
Embodiment 2: Herbicidal combinations are to corn field weed field efficacy.
Experimental pharmacy: 1: 20% suspending agent of medicament (flazasulfuron: isoxaflutole: florasulam=1: 3: 1)；Medicament
2: 28% wettable powders (flazasulfuron: isoxaflutole: florasulam=3: 3: 1)
Subjects: weeds in field mainly has purslane, Descurainia sophia, herba stellariae mediae, elscholtiza, Siberian cocklebur, barnyard grass, herba eleusines indicae, abnormal shape
Nutgrass flatsedge etc..Test method: every plot area 25m2,3 repetitions of every processing, knapsack electric sprayer carry out cauline leaf and uniformly spray
Mist sprays dose 50L/667m2.It is 1 time spraying, fresh weight preventive effect after investigation 14 days, and the activity of weeding of more various medicaments.Preventive effect
(%)=[(clear water control group weeds fresh weight-processing group weeds fresh weight)/clear water group weeds fresh weight] * 100%.
3 Herbicidal combinations of table are to corn field weed field efficacy
As seen from the above table, flazasulfuron, isoxaflutole and florasulam compounding application can significantly improve it to jade
The control efficiency of rice field weed, has significant synergies, can effectively lower the administration dosage of pesticide, reduce environmental pollution,
To crop safety.
The above is only a preferred embodiment of the present invention, to those skilled in the art, this hair is not being departed from
It under the premise of bright raw material, can be suitably modified, these are improved also within protection scope of the present invention.
Claims (4)
1. a kind of ternary weeding composition for corn field weed, it is characterised in that: active constituent is by flazasulfuron, isoxazole
Humulone and florasulam composition；The weight proportion of the flazasulfuron, isoxaflutole and florasulam is 1-5: 1-10:
1-5。
2. ternary weeding composition according to claim 1, it is characterised in that: flazasulfuron, isoxaflutole and double fluorine
The weight proportion of sulphur grass amine is (0.5-5): 3: 1；It is preferred that the weight proportion of flazasulfuron, isoxaflutole and florasulam is
1∶3∶1。
3. -2 described in any item ternary weeding compositions according to claim 1, it is characterised in that: the flazasulfuron, different evil
The total weight percentage composition of azoles humulone and florasulam in the composition is 1-90%.
4. the purposes that ternary weeding composition according to claim 1-3 is used for Control Weeds in Maize Field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910148183.4A CN109699669B (en) | 2019-02-27 | 2019-02-27 | Ternary weeding composition for corn field weeds and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910148183.4A CN109699669B (en) | 2019-02-27 | 2019-02-27 | Ternary weeding composition for corn field weeds and application thereof |
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| Publication Number | Publication Date |
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| CN109699669A true CN109699669A (en) | 2019-05-03 |
| CN109699669B CN109699669B (en) | 2020-09-11 |
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| CN109699669B (en) | 2020-09-11 |
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Inventor after: Zhou Fengyan Inventor after: Zhang Yong Inventor after: Shen Yan Inventor after: Liu Xiaolin Inventor after: Han Yunjing Inventor before: Zhang Yong Inventor before: Zhou Fengyan Inventor before: Shen Yan Inventor before: Liu Xiaolin Inventor before: Han Yunjing |
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