CN108308186A - A kind of herbicidal composition of Han Evil humulones - Google Patents
A kind of herbicidal composition of Han Evil humulones Download PDFInfo
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- CN108308186A CN108308186A CN201711488615.3A CN201711488615A CN108308186A CN 108308186 A CN108308186 A CN 108308186A CN 201711488615 A CN201711488615 A CN 201711488615A CN 108308186 A CN108308186 A CN 108308186A
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- sulfone pyrrole
- weeds
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- soybean
- evil
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- 0 CC(C)Oc1cc(N2N=C(C(C)(C)C)OC2=O)c(*)cc1Cl Chemical compound CC(C)Oc1cc(N2N=C(C(C)(C)C)OC2=O)c(*)cc1Cl 0.000 description 1
Classifications
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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
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/82—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with three ring hetero atoms
-
- 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
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/80—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
Abstract
The invention discloses a kind of herbicidal composition, specifically disclose it is a kind of using sulfone pyrrole grass Zuo He Evil humulones is the herbicidal compositions for preventing and kill off soybean weeds of active constituent, active constituent sulfone pyrrole grass Zuo in the composition is He the weight ratio of Evil humulones is 1:108‑36:3, the weight percentage of active constituent in the composition is 5 90%.This complex weedicide can be prepared into the dosage forms such as wettable powder, missible oil, suspending agent, microemulsion, herbicidal composition of the present invention can prevent and kill off various weeds in Soybean Field simultaneously, significantly improve the preventive effect to soybean weeds, effective ingredient consumption is few, use cost is low, it is a kind of ideal herbicide to soybean and succession crop safety.
Description
【Technical field】
The invention discloses a kind of herbicide composition for soybean field, specifically disclose one kind with sulfone pyrrole grass Zuo He Evil humulones are
Active constituent is used to prevent and kill off the herbicidal composition of soybean weeds.
【Background technology】
Soybean is food that is most being rich in nutrition in legume and being easy to digestion, is rich in protein, is important food
And feed resource.Legume growth early stage plant hat level of coverage is small, is easy to grow a variety of grass family, broad leaved weed, main miscellaneous
Grass has barnyard grass, green bristlegrass, lady's-grass, eleusine indica, Siberian cocklebur, acalypha copperleaf, black nightshade, lamb's-quarters, purslane, piemarker etc..Currently, chemical weed control is still
It is main herbicidal methods, but due to the continuous single use of herbicide, weeds are increasingly severe to the resistance problem of herbicide.
Meanwhile grass when soybean weeds generation is mutually complicated, the polymorphic types weeds such as grassy weed, broad leaved weed are mixed to be given birth to, and use is single
Species compound herbicide can show defect in a certain respect and limitation, cannot be fully solved farmland weed.In order to drop
Low agriculture production cost promotes agro based economic development, and there is an urgent need to introduce new active drug to prevent soybean weeds.
Sulfone pyrrole grass azoles (Pyroxasulfone), other titles：Send Rock herbicide sulfone, Bi Evil herbicide sulfones, chemical name：3-
[5- (difluoro-methoxy) -1- methyl -3- (trifluoromethyl) pyrazoles -4- ylmethyls sulfonyl] -4,5- dihydro -5,5- dimethyl -
1,2- oxazole, structural formula are：
Sulfone pyrrole grass azoles is the novel pyrazoles weeding for being found and being formulated by prosperous centre of paddy in Japanese K-I chemistry institutes etc. earliest
Agent.The herbicide can be used for soil treatment before the buds of most of the crop fields, and mechanism of action is approximate with Acetochlor, can be by weeds root
It is absorbed with young shoot, inhibits seeding previous vigor, but it also has novel mechanism of action, it can be by interfering long chain fatty acids life
Object synthesizes to inhibit weeds growth of seedling.It can be applied to a system such as corn and soybean, cotton, peanut, wheat, sunflower, potato
Row crop, can effectively anti-grassy weed and part broad leaved weed, to lady's-grass, wild oat, eleusine indica, barnyard grass, green bristlegrass, a thousand pieces of gold
The preventive effects such as son are good, but poor to most of broad leaved weed preventive effects.
Evil humulones (Oxadiazon), other titles：Agriculture think it, Lonster, chemical name：5- tertiary butyls -3- (2,4- bis-
Chloro- 5- o-phenyl-isopropyls) -1,3,4- oxadiazole -2 (3H) -one, structural formula is：
Evil humulones are proporphyrinogen oxidase inhibitor, after soil treatment, young shoot or seedling of the medicament by susceptible weeds
Contact is absorbed and is worked, i.e., is adsorbed to form a stable medicine film confining bed by topsoil micelle, miscellaneous when what is sprouted thereafter
When careless young shoot passes through this medicine film layer, is absorbed with contact and limited conduction makes the cell tissue for touching medicine position under conditions of having light
And chlorophyll is destroyed, and the separate living tissue at the vigorous position of growth is made to stop growing, eventually lead to the weed bud of victim
Withered death.Broad leaved weed can be effectively prevented and kill off, it is preferable to preventive effects such as piemarker, barnyard grass, black nightshade, acalypha copperleaf, Amaranthus retroflexus, lamb's-quarters, still
It is poor to preventive effects such as grassy weeds such as eleusine indica, wild oat, moleplant seed.
Existing document report crosses the herbicidal composition containing sulfone pyrrole grass Zuo Huo Evil humulones, such as patent
CN201710105849.9 Gong Kai Evil humulones and S-metolachlor, which compound, can be used for Soybean Field weeding, but the composition pair
Part grassy weed preventive effect is not fine；Patent CN201510712580.1 discloses the suspension of sulfone pyrrole grass azoles and trifluoro grass piperazine
Agent composition can be applied to Soybean Field, wheat paddock and cornfield weeding, but the composition is anti-to Soybean Field part broad leaved weed
It imitates poor.
In order to make up above each single dose and report complex preparation insufficient, the present inventor existing in actual use
It furthers investigate, is found on the basis of the screening of a large amount of formula indoor and field control effectiveness test, sulfone pyrrole grass Zuo Yu Evil humulones
It compounds within a certain ratio range, there is excellent control effect, the preventive effect shown and activity level to soybean weeds
Superposition beyond each component has unexpected synergistic function, solves both the above herbicide in herbicide controlling spectrum, preventive effect
With safety present on limitation, achieved the purpose that expand herbicide controlling spectrum, improve preventive effect, improve safety.
【Invention content】
It is an object of the invention to according to the present situation and soybean weeds of current soybean field herbicide, a situation arises,
A kind of safe efficient, wide spectrum herbicidal composition for Soybean Field weeding is provided.
To achieve the purpose of the present invention, the present invention provides a kind of herbicidal compositions, by a effective amount of sulfone pyrrole grass azoles
He Evil humulone two kinds of active components form.
The weight ratio of the active constituent sulfone pyrrole grass Zuo Yu Evil humulones is 1:108-36:3, preferably：1:63-21:3, into
One step is preferably：1:18-6:3, still more preferably for：1:10.5-3.5:3, optimal proportion 1:3, two active constituents except
Weight percentage in careless agent composition is 5-90%.
Herbicidal composition of the present invention can also add carrier, adhesive, disintegrant, dispersion in addition to two kinds of active ingredient
Agent, wetting agent etc. and other contribute to active ingredient in the formulation stablize and drug effect play known substance.
Herbicidal composition of the present invention can be processed into the suitable agricultural use such as wettable powder, missible oil, suspending agent, microemulsion
Various dosage forms, preferred dosage form is missible oil.
It is adjuvant used to include when being configured to wettable powder：Dispersant can be selected from lignosulfonates, polycarboxylic acids
Salt, alkylnaphthalene sulfonate, neopelex, alkyl polyoxyethylene ether sulfonate, alkylphenol-polyethenoxy base ether formaldehyde
It is one or more in condensation product etc.；Wetting agent can be selected from lauryl sodium sulfate, Teepol, naphthalene sulfonate, fat
It is one or more in fat alcohol sulfate or alkyl sulfate etc.；Carrier can be selected from kaolin, diatomite, attapulgite, swollen
Moisten one or more in soil, white carbon etc..
It is adjuvant used to include when being configured to missible oil：Wetting agent can be selected from calcium dodecyl benzene sulfonate, alkylsurfuric acid
It is one or more in salt, alkylsulfonate, alkyl phenol formaldehyde resin polyoxyethylene ether etc.；Dispersant can be selected from alkyl phenol sulphur
It is one or more in hydrochlorate, alkyl ethyl sulfonate, polycarboxylate, NNO, sodium lignin sulfonate etc.；Emulsifier can be selected from
One kind or more in Nongru-700 #, agriculture breast 2201#, Span60, agriculture breast 1601#, TERSPERSE2500 etc.
Kind；Solvent can be selected from one or more in toluene, dimethylbenzene, methanol, methyl oleate, acetone etc..
For suspending agent, can used additives include：Dispersant be selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate,
It is one or more in polyarylphenol-polyoxyethylene ether phosphate, alkyl phenol polyoxyethylene ether etc.；Wetting agent is poly- selected from alkyl phenol
Oxyethylene group ether formaldehyde condensation products sulfate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyoxyethylene groups ether phosphoric acid
It is one or more in ester, alkyl sulfate, naphthalene sulfonate etc.；Thickener is selected from xanthans, carboxymethyl cellulose, polyacrylic acid
It is one or more in sodium, bentonite, aluminium-magnesium silicate etc.；Antifreezing agent in ethylene glycol, propylene glycol, glycerine, urea etc. one
Kind is a variety of；Preservative is one or more in sorbic acid, sodium benzoate etc.；Antifoaming agent can be organic silicon defoaming
Agent；Appropriate amount of deionized water.
It is adjuvant used to include when being configured to microemulsion：Solvent can be selected from dimethylbenzene, acetone, methanol, ethyl alcohol, hexamethylene
Ketone, ethyl acetate, dimethylformamide, N-Methyl pyrrolidone, dimethyl sulfoxide (DMSO), diethyl phthalate, O-phthalic
One or more of dibutyl phthalate etc.；Emulsifier can be selected from alkyl phenol polyoxyethylene ether, styryl phenol polyethenoxy ether,
Alkaryl phenol polyethenoxy ether phosphate, castor oil polyoxyethylene ether, alkylbenzene sulfonate, alkylphenol-polyethenoxy phosphate castor
One or more of sesame oil, lauryl sodium sulfate, potassium chloride, sodium sulphate etc.；Thickener can be selected from polyvinyl alcohol, poly- second
It is one or more in vinyl acetate, xanthans, gum arabic, phenolic resin, carboxymethyl cellulose, sodium alginate etc.；Disappear
Infusion can be selected from silicone emulsion, the fatty acid ester compounded object of higher alcohols, polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene
One kind in polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether and polyoxyethylene polyoxypropylene glycerin ether, dimethyl silicone polymer etc.
Or it is a variety of.
Salt such as polycarboxylate, lignosulfonates described in above-mentioned auxiliary agent etc. is sodium salt or calcium salt.
Herbicidal composition provided by the invention is mainly used for preventing and kill off soybean weeds, compared with prior art, the present invention
Has following advantageous effect：
1, herbicidal composition of the present invention uses sulfone pyrrole grass Zuo He Evil humulones compound, and two active constituents are in certain ratio range
Interior compounding shows fabulous synergistic function, and mixed composition significantly improves herbicidal effect compared with single dose, overcomes
The defect and limitation of the herbicide containing single active ingredient.
2, herbicidal composition of the present invention kills weeds using two different mechanisms of action, can delay herbicide resistance
It generates, while reducing production cost and use cost.
3, herbicidal composition of the present invention expands herbicide controlling spectrum so that a kind of medicament can prevent a variety of weeds simultaneously, reduce
Adverse effect of the pesticide to ecological environment.
4, it is miscellaneous can to prevent and kill off Soybean Field to soybean safety under the premise of not injuring soybean for herbicidal composition of the present invention
Grass.
【Specific implementation mode】
In order to make the purpose , technical scheme and advantage of the present invention be clearer, present invention following specific examples
It illustrates, but is only limitted to this absolutely not.As described below is the preferable embodiment of the present invention, is used only for the description 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
It replaces and improves, should all be included in the protection scope of the present invention.
Example of formulations 1：30% sulfone pyrrole Cao Zuo Evil humulone missible oil
First with part acetone by sulfone pyrrole grass Zuo He the dissolving of Evil humulones is complete, then remaining auxiliary agent is sequentially added, finally with third
Ketone complements to 100%, is mixed into homogeneous oil phase up to the 30% sulfone pyrrole Cao Zuo Evil humulone missible oil.
Example of formulations 2：17% sulfone pyrrole Cao Zuo Evil humulone missible oil
It first uses part dimethylbenzene by sulfone pyrrole grass Zuo He the dissolving of Evil humulones is complete, then remaining auxiliary agent is sequentially added, finally use
Dimethylbenzene complements to 100%, is mixed into homogeneous oil phase up to the 17% sulfone pyrrole Cao Zuo Evil humulone missible oil.
Example of formulations 3：49% sulfone pyrrole Cao Zuo Evil humulone missible oil
It first uses part methanol by sulfone pyrrole grass Zuo He the dissolving of Evil humulones is complete, then remaining auxiliary agent is sequentially added, finally use first
Alcohol complements to 100%, is mixed into homogeneous oil phase up to the 49% sulfone pyrrole Cao Zuo Evil humulone missible oil.
Example of formulations 4：61% sulfone pyrrole Cao Zuo Evil humulone wettable powders
By above-mentioned each component by formula rate after mixing, frequent regulation for wettable powder method, i.e., before mixing,
Air-flow crushing, rear mixing, obtain 61% sulfone pyrrole Cao Zuo Evil humulone wettable powders.
Example of formulations 5：77% sulfone pyrrole Cao Zuo Evil humulone wettable powders
By above-mentioned each component by formula rate after mixing, frequent regulation for wettable powder method, i.e., before mixing,
Air-flow crushing, rear mixing, obtain 77% sulfone pyrrole Cao Zuo Evil humulone wettable powders.
Example of formulations 6：39% sulfone pyrrole Cao Zuo Evil humulone suspending agents
Above-mentioned each component is uniformly mixed by formula rate, frequent regulation divides for the method for suspending agent through high speed shear
It dissipates, crushing is sanded, reconciles, obtain 39% sulfone pyrrole Cao Zuo Evil humulone suspending agents.
Example of formulations 7：43% sulfone pyrrole Cao Zuo Evil humulone microemulsions
After mixing by formula rate by above-mentioned each component, frequent regulation is stirred, is cut at a high speed for the method for microemulsion
Stirring is cut, 43% sulfone pyrrole Cao Zuo Evil humulone microemulsions are obtained.
It is raw to survey embodiment 1：
Sulfone pyrrole grass Zuo is He Evil humulone soil treatment synergy toxicity determination tests
In order to prevent the soybean weeds in agricultural production, inventor has studied sulfone pyrrole grass Zuo He the weeding of Evil humulones compounding
Effect, the synergy type after being used in combination both Sun Yunpei's Method evaluations different proportion mixed, is the conjunction of sulfone pyrrole grass Zuo He Evil humulones
It manages mixture and scientific basis is provided.Test reference《Farm-chemical indoor determination test rule herbicide third portion》.
1, experimental condition
1.1 for trying weeds
Eleusine indica, wild oat, black nightshade, acalypha copperleaf；
1.2 reagent agent
Sulfone pyrrole grass azoles
Evil humulones
2, examination material prepares
Culture for trying weeds uses potting cultivation.It with 11 × 12cm plastic tubs, is placed in shallow-water tank, will not make
The soil adopted back in the farmland of used herbicide air-dries, and basin is filled after sieving, and dry ground quantifies at 4/5 in basin, and P in soil H values 7.0 have
Machine matter content 1.2%.Soil is set to moisten completely using basin alms bowl bottom infiltrating irrigation mode.It is quantitatively spread pretreated for examination weed seed
It is sowed at soil surface, according to seed size earthing 0.5cm-2.0cm, indoor temperature 28-32 DEG C/18-25 DEG C (d/n) is relatively wet
Degree 75% ± 15%.The bottom infiltrating irrigation mode moisturizing of basin alms bowl is used in incubation, and soil is kept to be sufficiently humidified so as to.Sow standby for 24 hours
With.
3, experimental design
The experiment sets 46 processing altogether, wherein sulfone pyrrole grass azoles set 75,125,175,225,275g a.i./hm25 dosage
Processing , Evil humulones set 100,300,500,700,900g a.i./hm25 dosage processing.Sulfone pyrrole grass Zuo is He both Evil humulones are mixed
It is handled with 7 groups of proportionings are set：1:648、1:108、1:18、1:3、6:3、36:3、216:3, dosage is 75,125,175,225,
275g a.i./hm2, 1 clear water control is separately set, amounts to 46 processing, is repeated 4 times.
4, application method
Sowing is placed in spray tower spray (4 type pesticide spraying systems of ASS-, DG8003 nozzles, atomisation pressure for 24 hours
2.75MPA, 30Kg/ mus of spouting liquid), it waits for that natural air drying is placed in greenhouse and cultivates observation.
5, data survey and statistical analysis
The damage symptoms for recording weeds after dispenser in detail 30 days after processing, carry out fresh weight measurement, and compared with control treatment
Compared with calculating weeds fresh weight preventive effect.By the linear regression analysis between the niqueMin of preventive effect and the logarithm of series concentration, calculate
Go out the ED of each processing50And related coefficient, each processing is evaluated to the bioactivity of weeds, and different agents are calculated with Sun Yunpei's Method
The co-toxicity coefficient of proportioning evaluates the synergy situation of different ratio, determines the optimum activity ratio of sulfone pyrrole grass Zuo Yu Evil humulones.
Sun Yunpei's Method calculation formula：
In formula：E --- fresh weight preventive effect；
C --- control weeds aerial part weeds fresh weight；
T --- processing weeds aerial part weeds fresh weight.
In formula：ATI --- mixture surveys toxicity index；
The ED of S --- standard herbicide50, unit is gram per hectare (g a.i./hm2)；
The ED of M --- mixture50, unit is gram per hectare (g a.i./hm2)。
TTI=TIA×PA+TIB×PB……………………………………………(3)
In formula：TTI --- mixtures theoretical toxicity index；
TIA--- A medicament toxicity index；
PA--- percentage composition of the A medicaments in mixture, unit are percentage (%)；
TIB--- B medicament toxicity index；
PB--- percentage composition of the B medicaments in mixture, unit are percentage (%)；
In formula：CTC --- co-toxicity coefficient；
ATI --- mixture surveys toxicity index；
TTI --- mixtures theoretical toxicity index.
Co-toxicity coefficient CTC >=120 of compounding agent show as synergistic effect；CTC≤80 show as antagonism；80 ＜ CTC
＜ 120 shows as summation action.
6, result and analysis are shown in Table 1-4
The virulence of 1 sulfone pyrrole grass Zuo of table He Evil humulone mixtures prevention soybean weeds eleusine indica
The virulence of 2 sulfone pyrrole grass Zuo of table He Evil humulone mixtures prevention soybean weeds wild oat
The virulence of 3 sulfone pyrrole grass Zuo of table He Evil humulone mixtures prevention soybean weeds black nightshade
The virulence of 4 sulfone pyrrole grass Zuo of table He Evil humulone mixtures prevention soybean weeds acalypha copperleaf
The Toxicity Determination result shows sulfone pyrrole grass Zuo He Evil humulones are in weight ratio 1:648-216:It is used in the range of 3
Addition or synergistic effect are shown as to weeds, in weight ratio 1:108-36:Being used in the range of 3 has preferable synergistic effect,
Weight ratio 1:18-6:Being used in the range of 3 has significant synergistic effect, expands control of weeds spectrum, has reached and effectively prevented and kill off greatly
The purpose of soybean weeds.
It is raw to survey embodiment 2：
Sulfone pyrrole grass Zuo is He Evil humulones compound Security test experiment of the soil treatment to soybean
In order to study sulfone pyrrole grass Zuo He safety of the Evil humulones compounding soil treatment to soybean, is sulfone pyrrole grass Zuo He Evil humulones
Rational mixture scientific basis is provided, inventor has done following tests, and experiment is with reference to People's Republic of China's agricultural industry criteria
NY/T1155.6-2006 farm-chemical indoor determination test rules-herbicide, the 6th part：The safety testing soil of crop
Spray-on process.
1, experimental condition
1.1 for studying object
Soybean varieties：Shandong beans 12
1.2 for trying weeds
Eleusine indica
1.3 reagent agent
Sulfone pyrrole grass azoles
Evil humulones
2, examination material prepares
2.1 for studying object
Culture for studying object is placed in 11 × 12cm plastic tubs in culturing pot using greenhouse pot culture method, will be not used
It crosses the soil adopted back in the Soybean Field of herbicide to air-dry, basin is filled after sieving, dry ground quantifies at 4/5 in basin, and P in soil H values 7.0 have
Machine matter content 1.2%.After so that soil is moistened completely using basin alms bowl bottom infiltrating irrigation mode, the point of soya seeds quantitative and even is sowed at
Soil surface, earthing 1.0-2.0cm keep soil to be sufficiently humidified so as to the bottom infiltrating irrigation mode moisturizing of basin alms bowl.It is spare after sowing for 24 hours.
2.2 for trying weeds
Culture for trying weeds is placed in 11 × 12cm plastic tubs in shallow-water tank using greenhouse pot culture method, will not made
The soil adopted back in the farmland of used herbicide air-dries, and basin is filled after sieving, and dry ground quantifies at 4/5 in basin, and P in soil H values 7.0 have
Machine matter content 1.2%.After so that soil is moistened completely using basin alms bowl bottom infiltrating irrigation mode, quantified pretreated for examination weed seed
It broadcasts sowing in soil surface, earthing 0.5-1.0cm, indoor temperature 28-32 DEG C/18-25 DEG C (d/n), relative humidity 75% ± 15%.
With basin alms bowl bottom infiltrating irrigation mode moisturizing to saturation state.It is spare after sowing for 24 hours.
3, experimental design
3.1 weeds dispenser dosage
Experiment sets 36 processing altogether, wherein sulfone pyrrole grass azoles set 25,50,75,100,125g a.i./hm2At 5 dosage
Li , Evil humulones set 80,160,240,320,400g a.i./hm25 dosage processing.Sulfone pyrrole grass Zuo is mixed He both Evil humulones
If 5 groups of proportioning processing：1:108、1:18、1:3、6:3、36:3, dosage is 25,50,75,100,125g a.i./hm2, separately set
1 clear water control, amounts to 36 processing, is repeated 4 times.
3.2 crop dispenser dosage
Experiment sets 36 processing altogether, wherein sulfone pyrrole grass azoles set 150,300,450,600,750g a.i./hm25 dosage
Processing , Evil humulones set 800,1200,1600,2000,2400g a.i./hm25 dosage processing.Sulfone pyrrole grass Zuo is He Evil humulones two
Person is mixed to set 5 groups of proportioning processing：1:108、1:18、1:3、6:3、36:3, dosage is 500,700,900,1100,1300g
a.i./hm2, 1 clear water control is separately set, amounts to 36 processing, is repeated 4 times.
4, application method
Sowing carries out soil spraying treatment afterwards for 24 hours, is placed in spray in tower (4 type pesticide spraying systems of ASS-, DG8003 sprays
Head, atomisation pressure 2.75MPa, 30kg/ mus of spouting liquid), it waits for that natural air drying is placed in greenhouse and cultivates observation.
5, data survey and statistical analysis
5.1 crops are investigated
After dispenser, investigating each processed soybeans, whether there is or not symptom of chemical damage, detailed record symptom of chemical damage, grade if having, 30 after medicine
It measures each processed soybeans fresh weight, calculates fresh weight inhibition rate, the safety with clear test medicine to soybean.
5.2 weedy rices
The damage symptoms (such as growth inhibition, chlorosis, deformity) for recording weeds after dispenser in detail weigh 30 days after medicine
Each processing weeds aerial part fresh weight, the fresh weight preventive effect of weeds is calculated using growth inhibition assay.
5.3 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.
5.4 selectivity index computational methods
6, result and analysis are shown in Table 5-7
Preventive effect of 5 sulfone pyrrole grass Zuo of the table mixtures' ratios different He Evil humulones to eleusine indica
Safety of 6 sulfone pyrrole grass Zuo of the table mixtures' ratios different He Evil humulones to soybean
Selectivity index of 7 sulfone pyrrole grass Zuo of the table mixtures' ratios different He Evil humulones to soybean
Note：Data are that (Tang Qiyi, Feng Mingguang are real by data application DPS2000 data processing systems in table 5, table 6 in table 7
With statistical analysis and its Beijing DPS data processing systems [M]：Science Press, 2002.188-201) be calculated.
When selectivity index >=4, indicate that selectivity of the medicament between crop and weeds is very high；When 2≤selectively refer to
When number ＜ 4, indicate that medicament has selectivity between crop and weeds；As selectivity index ＜ 2, indicate medicament in crop and
Poor selectivity between weeds.Security test to soybean experiments have shown that, sulfone pyrrole grass Zuo He Evil humulones in weight ratio 1:108-
36:It is used in the range of 3 and 2 is more than to soybean selectivity index, to soybean safety.
It is raw to survey embodiment 3
Prevent and kill off soybean weeds field control effectiveness test I：
1, test process
Experiment sets 12 processing, and 4 repetitions, totally 48 processing cells, often handle 20 square metres of plot area, random district's groups
Arrangement.(1)-(9) 30% sulfone pyrrole Cao Zuo Evil humulone missible oil be reagent agent, the 40% sulfone pyrrole grass azole suspending agent of (10)-(11) and
35% Evil humulone suspending agents are comparison medicament.It is watered 30 kilograms per acre, is uniformly sprayed using 552 third type sprayers (apertures 0.7mm)
Mist.Field main weeds have eleusine indica, wild oat, moleplant seed, black nightshade, acalypha copperleaf, purslane etc..
2, pilot project and method
(1) safety：After dispenser, the growth and development situation of soybean, safety of the evaluation reagent agent to soybean are investigated.
(2) herbicidal effect：Take at random per cell at 4 points, investigate 1/4 square metre, investigation weed control in 30 days after dispenser at every
Effect records weeds type and strain number respectively, calculates weeds strain preventive effect.
3, test result
(1) safety：It is investigated after dispenser, (1)-(9) chemicals treatment district soybean plant height, leaf color and blank district basic one
It causes, and (10)-(11) treatment region soybean roots go out the symptom of chemical damage such as leaf chlorosis, plant strain growth are suppressed, and bean seedlings height is uneven,
Show 30% sulfone pyrrole Cao Zuo Evil humulones missible oil of reagent agent (1)-(9) to soybean safety.
(2) herbicidal effect：It is shown in Table 8
30 days various weed control efficacies after 8 medicine of table
Note：(1) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:108)
(2) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:63)
(3) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:18)
(4) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:10.5)
(5) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:3)
(6) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (3.5:3)
(7) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (6:3)
(8) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (21:3)
(9) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (36:3)
(10) 40% sulfone pyrrole grass azole suspending agents
(11) 35% Evil humulone suspending agents
(12) blank control
As shown in Table 8,30% sulfone pyrrole Cao Zuo Evil humulones missible oil of different ratio exists to common weed strain preventive effect
Between 88.20%-97.48%, it is superior to 40% sulfone pyrrole grass azole suspending agent of comparison medicament and (the weeds strain of 35% Evil humulones suspending agent
Preventive effect is respectively 66.00% and 65.73%).Wherein sulfone pyrrole grass Zuo He Evil humulones weight ratio be 1:108-36:To soybean when 3
Field common weed has apparent preventive effect, and weeds strain preventive effect is all 88% or more；Sulfone pyrrole grass Zuo He Evil humulones weight ratio be 1:63-
21:Preferable to Soybean Field common weed preventive effect when 3, weeds strain preventive effect is all 90% or more；And sulfone pyrrole grass Zuo is He Evil humulone weight
Than being 1:Preventive effect is more up to 97.48% when 3.Thus illustrate, sulfone pyrrole grass Zuo He the weight ratio of Evil humulones 1:108-36:3 models
When enclosing interior, there is good preventive effect to Soybean Field common weed, and this herbicidal composition is to soybean safety.
Prevent and kill off soybean weeds field control effectiveness test II：
1, test process
(1) 15% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:3) 300g/ mus
(2) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:3) 150g/ mus
(3) 45% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:3) 100g/ mus
(4) blank control
Experiment sets 4 processing, and 4 repetitions, totally 16 processing cells, often handle 20 square metres of plot area, random district's groups
Arrangement.(1)-(3) sulfone pyrrole Cao Zuo Evil humulone missible oil is reagent agent, 30 kilograms is watered per acre, using 552 third type sprayers
(apertures 0.7mm) even spraying.Field main weeds have eleusine indica, wild oat, moleplant seed, black nightshade, acalypha copperleaf, purslane etc..
2, pilot project and method
Herbicidal effect：Take at random per cell at 4 points, investigate 1/4 square metre, 30 days investigation weed control effects after dispenser at every
Fruit records weeds type and strain number respectively, calculates weeds strain preventive effect.
3, test result：Herbicidal effect is shown in Table 9
30 days various weed control efficacies after 9 medicine of table
Note：(1) 15% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:3)
(2) 30% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:3)
(3) 45% sulfone pyrrole Cao Zuo Evil humulones missible oil (1:3)
(4) blank control
As shown in Table 9, when the weight ratio 1 of sulfone pyrrole grass Zuo He Evil humulones:When 3, the sulfone pyrrole Cao Zuo Evil humulones of different content
Missible oil, 97% or more, shows sulfone pyrrole grass Zuo He when Evil humulone weight ratios are optimal proportion to common weed strain preventive effect, different
The herbicidal composition of active component content has weeds significant preventive effect.
In conclusion instant component is reasonable, activity when preventive effect is administered alone better than each component is equal to soybean weeds
There is preferable preventive effect, expands control of weeds spectrum, delay the development of weed resistance, to crop safety, meet pesticide
The security requirement of preparation.
Claims (7)
1. a kind of herbicidal composition, which is characterized in that the composition includes sulfone pyrrole grass Zuo He Evil humulone two kinds of active components, and two
Active constituent weight ratio is：Sulfone pyrrole grass azoles:Humulone=1 Evil:108-36:3.
2. herbicidal composition according to claim 1, which is characterized in that active constituent weight ratio is：Sulfone pyrrole grass azoles:Evil
Humulone=1:63-21:3.
3. herbicidal composition according to claim 2, which is characterized in that active constituent weight ratio is：Sulfone pyrrole grass azoles:Evil
Humulone=1:18-6:3.
4. herbicidal composition according to claim 3, which is characterized in that active constituent weight ratio is：Sulfone pyrrole grass azoles:Evil
Humulone=1:10.5-3.5:3.
5. herbicidal composition according to claim 4, which is characterized in that active constituent weight ratio is：Sulfone pyrrole grass azoles:Evil
Humulone=1:3.
6. herbicidal composition according to any one of claims 1-5, which is characterized in that active constituent is in herbicide group
It is 5-90% to close the weight percentage in object.
7. herbicidal composition according to claim 1, which is characterized in that the composition can be times agriculturally allowed
A kind of dosage form.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112772665A (en) * | 2021-01-05 | 2021-05-11 | 青岛恒宁生物科技有限公司 | Weeding composition and application thereof |
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| CN101977507A (en) * | 2008-03-20 | 2011-02-16 | 巴斯夫欧洲公司 | Herbicidal compositions comprising pyroxasulfone iv |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977506A (en) * | 2008-03-17 | 2011-02-16 | 巴斯夫欧洲公司 | Herbicidal compositions comprising pyroxasulfone v |
| CN101977507A (en) * | 2008-03-20 | 2011-02-16 | 巴斯夫欧洲公司 | Herbicidal compositions comprising pyroxasulfone iv |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112772665A (en) * | 2021-01-05 | 2021-05-11 | 青岛恒宁生物科技有限公司 | Weeding composition and application thereof |
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