CN105409983B - A kind of corn field herbicide composition - Google Patents

A kind of corn field herbicide composition Download PDF

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Publication number
CN105409983B
CN105409983B CN201510834443.5A CN201510834443A CN105409983B CN 105409983 B CN105409983 B CN 105409983B CN 201510834443 A CN201510834443 A CN 201510834443A CN 105409983 B CN105409983 B CN 105409983B
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tolpyralate
atrazine
azoles humulone
corn
weeds
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CN105409983A (en
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黄延昌
徐家俊
吴艳芳
徐磊
董丽
孙海涛
王艳彬
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Shandong Binnong Technology Co Ltd
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Shandong Binnong Technology Co Ltd
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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
    • A01N47/02—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 no bond to a nitrogen atom
    • A01N47/06—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 no bond to a nitrogen atom containing —O—CO—O— groups; 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
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
    • A01N43/647—Triazoles; Hydrogenated triazoles
    • A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
    • 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
    • A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
    • A01N43/66—1,3,5-Triazines, not hydrogenated and not substituted at the ring nitrogen atoms
    • A01N43/68—1,3,5-Triazines, not hydrogenated and not substituted at the ring nitrogen atoms with two or three nitrogen atoms directly attached to ring carbon atoms
    • A01N43/70—Diamino—1,3,5—triazines with only one oxygen, sulfur or halogen atom or only one cyano, thiocyano (—SCN), cyanato (—OCN) or azido (—N3) group directly attached to a ring carbon atom

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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)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The present invention relates to a kind of corn field herbicide composition, said composition includes three kinds of Tolpyralate, atrazine and azoles humulone active components, and active component is in weight ratio (0.75 12):(22.5‑360):Compounding shows fabulous synergistic function in the range of (0.5 8), mixed composition significantly improves herbicidal effect compared with single dose, reduce dosage, while peasant's drug cost is reduced, adverse effect of the agricultural chemicals to ecological environment is reduced, not only herbicidal effect is obvious for this herbicidal composition, and to corn safety, on succession crop without influence, meet the security requirement of pesticidal preparations.

Description

A kind of corn field herbicide composition
【Technical field】
The invention belongs to technical field of pesticide, and in particular to a kind of herbicidal composition containing Tolpyralate, for preventing Except corn field weed.
【Background technology】
Corn is one of main cereal crops in China, and corn field weed generation is extremely serious, and China's corn variety Species is various, and various regions varieties of plant differs greatly, and herbicide is increasingly subject to the concern of people to the security of different corn varieties. The herbicide that current domestic corn field after seedling uses mainly has：Nicosulfuron, rimsulfuron, mesotrione, Mediben, thiophene sulphur Grand, Brominal etc., mixture preparation have nicosulfuron and atrazine, Mediben and atrazine, nicosulfuron and metribuzin etc., but this A little herbicides still can not completely effectively prevent and kill off some malignant weeds, such as rhizome of nutgrass flatsedge, dayflower, piemarker.Research shows, corn Field herbicidal nicosulfuron, rimsulfuron are relatively low to corn, waxy corn security, or even some general planting kinds also can Produce more serious poisoning.Therefore, from the aspect of from weed control and to corn safety two, China's corn field postemergence weed control Agent system also imperfection is supplemented, it is necessary to find other herbicides.
Tolpyralate, chemical name：1- (1- ethyls -4- (3- (2- methoxy ethoxies) -2- methyl -4- (methyl sulphurs Acyl group) benzoyl) -1H- pyrazoles -5- bases oxygen) ethyl methyl carbonate, structural formula is：
Tolpyralate belongs to benzoylpyrazole class selective herbicide, is HPPD inhibitor, is to originate in industry hair by Japanese stone Existing novel corn field herbicide after seedling, can effectively prevent and kill off corn field major part broad-leaved and grassy weed, to corn safety. Tolpyralate herbicidal effect is higher than mesotrione, topramezone or ring sulphur ketone, is disadvantageous in that to part broad leaved weed Preventive effect it is undesirable, it is invalid to sedge weed.
Atrazine (Atrazine), other titles：Atrazine, grass purify, chemical name：The chloro- N of 6-2- ethyl-N4Isopropyl Base -1,3,5-triazines -2,4- diamines, structural formula are：
Atrazine category triazines selective inner-adsorption conduction-type herbicide, based on Root Absorption, cauline leaf absorbs seldom, medicament The photosynthesis for plant meristem and leaf portion, suppressing weeds is conducted after being absorbed quickly, makes its withered.Atrazine is in corn Deng resolving into innocuous substance by corn ketolase in resistance crop body, thus to crop safety, suitable for corn, sorghum, sugarcane, fruit The dry crops such as tree, nursery, forest land prevent and kill off a variety of annual gramineaes and broad leaved weed, also have to some perennial weeds necessarily Inhibitory action, it is but undesirable to the preventive effect of Cyperaceae and part grassy weed, and the atrazine lasting period grow, throwing for many years Enter to use, cause the pollution to natural mediums such as soil, water bodys.
Azoles humulone (Carfentrazone-ethyl), other titles：Carfentrazoneethyl, carfentrazone, good fortune agriculture, spirit etc. of going out soon, change Scientific name claims：(RS) the chloro- 3- of -2- [the chloro- 5- of 2- (4- difluoromethyl -4,5- dihydro -3- methyl -5- oxygen -1H-1,2,4 triazoles -1- Base) -4- fluorophenyls] ethyl propionate, structural formula is：
Azoles humulone category triazolineone selectivity contact killing type herbicide, is proporphyrinogen oxidase inhibitor, that is, passes through suppression The activity of proporphyrinogen oxidase during chlcrophyll biosynthesis processed and cause cell membrane disruption, blade is dried up rapidly, is dead Die, azoles humulone is absorbed after spray in 15 minutes by plant leaf blade, and not drenched with rain influences, during weeds occur as soon as after 3-4 hours Toxication shape, 2-4 days dead.Azoles humulone half-life period in soil is only a few houres, therefore to second stubble crop safety, it is mainly used in small Broad-leaved and sedge weed are prevented and kill off in wheat, barley, rice, seeding corn and other crops field, especially produce resistance to sulfonylurea herbicide Weeds have activity, but well invalid to grassy weed.
It has been reported that Tolpyralate is that fabulous bucket mixes partner with Common Herbicides glyphosate, glufosinate-ammonium and Mediben； Find that existing patent document is disclosed the Herbicidal combinations containing Tolpyralate or azoles humulone, such as patent by retrieving CN200980149775.2 contains the Herbicidal combinations of benzoyl-pyrazoles, disclose Tolpyralate can respectively with Azoles humulone or atrazine, but compound still has part weeds to prevent and kill off two-by-two, Tolpyralate can with azoles humulone compounding Most of weeds are prevented and kill off, but it is invalid to part broad leaved weed, and Tolpyralate can effectively prevent and kill off broad-leaved and standing grain with atrazine Undergraduate course weeds, but it is invalid to sedge weed.
The Herbicidal combinations of a kind of grass containing azole ketones of patent CN201110147719.4 and triazines, disclosing azoles humulone can be with Atrazine, but said composition is undesirable to grassy weed preventive effect.
In order to make up each single dose of the above and report complex preparation insufficient, the present inventor present in actual application Further investigate, had been surprisingly found that on the basis of the screening of substantial amounts of formula indoor and field control effectiveness test, Tolpyralate, Atrazine compounds with azoles humulone in certain ratio range, has excellent prevention effect to corn field weed, is shown Preventive effect and activity level exceed the superposition of each component, have unexpected synergistic function, solve herbicide it is alone Herbicide controlling spectrum, preventive effect and limitation present on security, the purpose for expanding herbicide controlling spectrum, improving preventive effect, improving security is reached.
【The content of the invention】
It is an object of the invention to the present situation according to current corn field herbicide, and a situation arises for corn field weed, There is provided a kind of broad weed-killing spectrum, herbicidal effect herbicidal composition that is good, safe to use, being advantageous to the corn field weed comprehensive regulation.
Present invention employs following technical scheme：A kind of corn field herbicide composition, containing tri- kinds of activity of A, B and C into Point, wherein active components A is Tolpyralate, and active component B is atrazine, and active component C is azoles humulone.
Specifically, the weight ratio of active components A, B and C is in the herbicidal composition：(0.75-12):(22.5- 360):(0.5-8), it is preferably：(0.75-6):(22.5-180):(0.5-4), more preferably：(1.5-4.5):(50- 140):(1.1-3.2), still more preferably for：(2-4):(65-125):(1.4-2.8), optimum weight ratio are：3:95:2.
Present invention also offers the preparation containing above-mentioned composition, the weight percentage of active ingredient is 5- in the preparation 90%.
The preparation is any formulation agriculturally allowed, preferably wettable powder, water dispersible granules, dry suspending agent Or the various formulations of the suitable agricultural use such as dispersible oil-suspending agent, more preferably wettable powder.
In the preparation, also contain auxiliary agent, specially one kind in dispersant, wetting agent, disintegrant, adhesive or carrier It is or several.
When being configured to wettable powder, it is adjuvant used including：
Dispersant is selected from lignosulfonates, polycarboxylate, alkylnaphthalene sulfonate, neopelex, alkyl and gathered One or more in oxygen ethene ether sulfonate or alkylphenol-polyethenoxy base ether formaldehyde condensation products etc.；
Wetting agent is selected from lauryl sodium sulfate, Teepol, AEO, Nonyl pheno One or more in ether or sorbitan fatty acid ester APEO etc.；
One or more of the carrier in kaolin, diatomite, attapulgite, bentonite or white carbon etc..
When being configured to water dispersible granules, it is adjuvant used including：
Dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, APES or alkyl phenol One or more in polyethenoxy ether sulphonate etc.；
Wetting agent is selected from naphthalene sulfonate, aliphatic alcohol sulfate, dodecyl benzene sulfonate, lauryl sodium sulfate, fat One or more in alcohol APEO or alkylsulfonate etc.；
Disintegrant is selected from ammonium sulfate, urea, cornstarch and its derivative, low-substituted hydroxypropyl cellulose, polyethylene pyrrole One or more in pyrrolidone or sodium alginate etc.；
Adhesive is selected from hydroxyethyl cellulose, soluble starch, polyethylene glycol, methylcellulose, dextrin, fructose or poly- second One or more in enol etc.；
Carrier is selected from white carbon, kaolin, bentonite, diatomite, precipitated calcium carbonate, gypsum, attapulgite, urea or sugarcane One or more in sugar etc..
When being configured to dry suspending agent, it is adjuvant used including：
Dispersant is selected from sodium lignin sulfonate, calcium lignosulfonate, polycarboxylate, APES formaldehyde condensation One or more in thing, fatty alcohol polyoxyethylene ether sulfate, APES succinate sulfonate etc.；
Wetting agent is selected from lauryl sodium sulfate, neopelex, Negel, Negel first One or more in aldehyde condensate and alkylphenol-polyethenoxy base ether etc.；
One or more of the disintegrant in urea, sodium chloride, sulfate, carbonate and sodium carboxymethylcellulose etc.；
One or more of the adhesive in gelatin, Arabic gum, polyvinyl alcohol, polyethylene glycol and starch etc.；
Carrier is selected from white carbon, kaolin, bentonite, diatomite, precipitated calcium carbonate, gypsum, attapulgite, urea or sugarcane One or more in sugar etc..
When being configured to dispersible oil-suspending agent, it is adjuvant used including：
Dispersant is selected from methyl naphthalene sulfonic acid salt formaldehyde condensation products, polycarboxylate, lignosulfonates, TERSPERSE 2425th, the one or more in alkylnaphthalene sulfonate etc.；
Wetting agent is selected from APES formaldehyde condensation products sulfat, APES phosphate, alkane One or more in base sulfate, alkylsulfonate, naphthalene sulfonate etc.；
Emulsifying agent is selected from ethoxylated castor oil, Nongru-700 #, agriculture breast 2201, TERSPERSE 4894, anhydrous sorbitol One or more in single-hard ester acid ester APEO etc.；
One or more of the thickener in bentonite, polyvinyl alcohol, xanthans, aluminium-magnesium silicate etc.；
Defoamer can be organic silicon defoamer；
One or more of the cosolvent in methanol, ethanol, dimethyl sulfoxide (DMSO) etc.；
One or more of the decentralized medium in corn oil, soybean oil, rapeseed oil, methyl oleate etc..
Salt such as polycarboxylate, lignosulfonates etc. described in above-mentioned auxiliary agent are sodium salt or calcium salt.
Herbicidal composition provided by the invention is mainly used in corn field management of weeds, compared with prior art, the present invention Possesses following beneficial effect：
1st, activity of weeding is high, and three kinds of active components of the invention have the different mechanism of action, can improve to greatest extent The herbicidal effect of Herbicidal combinations, synergistic effect are obvious.
2nd, broad weed-killing spectrum, three kinds of active component compoundings of the present invention can expand control of weeds spectrum, and a drug can be prevented and treated All weeds in corn field, including grass family, broad-leaved and sedge weed.
3rd, safety, Herbicidal combinations of the present invention can kill corn field to crop safety on the premise of crop is not injured Main weeds.
【Embodiment】
In order to make the purpose , technical scheme and advantage of the present invention be clearer, present invention specific examples below Illustrate, but be 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, it is impossible to Be interpreted as limitation of the present invention, it should be pointed out that be any modification, equivalent made within the spirit and principles in the present invention Replace and improve, should be included in the scope of the protection.
Example of formulations 1：50%Tolpyralate atrazine azoles humulone wettable powders
After above-mentioned raw materials are well mixed by formula rate, frequent regulation is for the method for wettable powder, i.e., preceding mixing, gas Stream crushes, rear mixing, obtains 50%Tolpyralate atrazine azoles humulone wettable powders.
Example of formulations 2：32.5%Tolpyralate atrazine azoles humulone wettable powders
After above-mentioned raw materials are well mixed by formula rate, frequent regulation is for the method for wettable powder, i.e., preceding mixing, gas Stream crushes, rear mixing, obtains 32.5%Tolpyralate atrazine azoles humulone wettable powders.
Example of formulations 3：71.8%Tolpyralate atrazine azoles humulone water dispersible granules
After above-mentioned raw materials are well mixed by formula rate, frequent regulation is for the method for water dispersible granules, i.e., preceding mixing, gas Stream is crushed, mixing plus water are mediated, are granulated, sieved afterwards, obtains 71.8%Tolpyralate atrazine azoles humulone water-dispersible grains Agent.
Example of formulations 4：18%Tolpyralate atrazine azoles humulone water dispersible granules
After above-mentioned raw materials are well mixed by formula rate, frequent regulation is for the method for water dispersible granules, i.e., preceding mixing, gas Stream is crushed, mixing plus water are mediated, are granulated, sieved afterwards, obtains 18%Tolpyralate atrazine azoles humulone water dispersible granules.
Example of formulations 5：20%Tolpyralate atrazine azoles humulone dry suspending agents
After above-mentioned raw materials are well mixed by formula rate, through being sanded, being spray-dried, described 20% is produced Tolpyralate atrazine azoles humulone dry suspending agents.
Example of formulations 6：62%Tolpyralate atrazine azoles humulone dry suspending agents
After above-mentioned raw materials are well mixed by formula rate, through being sanded, dry, produce the 62%Tolpyralate Atrazine azoles humulone dry suspending agent.
Example of formulations 7：The dispersible oil-suspending agent of 43%Tolpyralate atrazine azoles humulones
After above-mentioned raw materials are well mixed by formula rate, ground or high speed shear is disperseed, and produces described 43% The dispersible oil-suspending agent of Tolpyralate atrazine azoles humulones.
Example of formulations 8：The dispersible oil-suspending agent of 29%Tolpyralate atrazine azoles humulones
After above-mentioned raw materials are well mixed by formula rate, ground or high speed shear is disperseed, and produces described 29% The dispersible oil-suspending agent of Tolpyralate atrazine azoles humulones.
It is raw to survey embodiment 1：
Tolpyralate, atrazine and azoles humulone compounding synergy measure and Herbicidal experiment
In order to prevent and kill off the corn field weed in agricultural production, inventor has carried out Tolpyralate, atrazine and azoles humulone The synergy research mutually compounded, carries out cauline leaf process using indoor pot method, tests reference《People's Republic of China's agricultural industry Standard NY/T1155.7-2006 farm-chemical indoor determinations test rule-herbicide》7th part：The synergy of mixture is surveyed The Colby methods of teaching in fixed.
1st, reagent agent
98%Tolpyralate active compounds
98% atrazine active compound
95% azoles humulone active compound
2nd, for trying weeds
Green bristlegrass, Amaranthus retroflexus, the rhizome of nutgrass flatsedge
Potted plant cultivation is used for the culture for trying weeds, with 11 × 12cm plastic tubs, is placed in shallow-water tank, will not make The soil adopted back in the farmland of used herbicide is air-dried, and basin is filled after sieving, and dry ground is quantified at 4/5 in basin, P in soil H values 7.0, The content of organic matter 1.2%.After soil is moistened completely with basin alms bowl bottom infiltrating irrigation mode, pretreatment is quantified for examination weed seed Broadcast sowing in soil surface, according to seed size earthing 0.5cm-1.0cm, indoor temperature 28-32 DEG C/18-25 DEG C (d/n), relatively Humidity 75% ± 15%.The bottom infiltrating irrigation mode moisturizing of basin alms bowl is used in incubation, keeps soil to be sufficiently humidified so as to.Treat that weeds emerge Green bristlegrass is set to 10 plants afterwards, Amaranthus retroflexus and the rhizome of nutgrass flatsedge are set to 5 plants.
3rd, experimental design
Experiment sets 41 processing altogether, wherein Tolpyralate sets 0.75,1.5,3,6, at 12g a.i./dosage of mu 5 Reason, atrazine sets 22.5,45,90,180, the 360g a.i./dosage of mu 5 processing, azoles humulone sets 0.5,1,2,4,8g a.i./ 5 dosage processing of mu, Tolpyralate+ atrazines+azoles humulone three is mixed to set 0.75+22.5+0.5,0.75+45+1,0.75 +90+2、0.75+180+4、0.75+360+8、1.5+22.5+1、1.5+45+2、1.5+90+4、1.5+180+8、1.5+360+ 0.5、3+22.5+2、3+45+4、3+90+8、3+180+0.5、3+360+1、6+22.5+4、6+45+8、6+90+0.5、6+180+ 1st, 6+360+2,12+22.5+8,12+45+0.5,12+90+1,12+180+2,12+360+4g a.i./dosage ratio of mu 25 Processing, an auxiliary agent control is separately set, 41 processing, are repeated 4 times altogether.
4th, test method
Spray (ASS-4 type agricultures in spray tower are placed in grass family and sedge weed 2-4 leaf phases, broad leaved weed 3-5 leaves Medicine sprinkling system, DG8003 shower nozzles, atomisation pressure 2.75MPa, spouting liquid 30Kg/ mus), it is placed in greenhouse and trains after natural air drying Support observation.
5th, weedy rices and analysis method
After dispenser, growth conditions, poisoning symptom and the poisoning degree of routine observation weeds, symptom of chemical damage is recorded, 21 after medicine It weighs aerial part fresh weight, calculates weeds survival rate E, and uses the type of action of medicament with using the evaluation of Colby methods, further Inquire into the reasonability of proportioning.
The check plot weeds fresh weight ... ... ... ... ... ... (1) of E=treatment region weeds fresh weight × 100/
Colby method calculation formula：
Herbicide A weeds survival rate when X --- dosage is P；
Herbicide B weeds survival rate when Y --- dosage is Q；
Herbicide C weeds survival rate 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% are synergistic effect；E0- E ＜ -10% are antagonism；E0- E values are summation action between ± 10%.
6th, result and analysis in table 1-3
The actual measurement survival rate and theoretical survival rate of table 1Tolpyralate, atrazine and azoles humulone mixture to green bristlegrass
Tolpyralate, the atrazine co-toxicity to green bristlegrass mixed with azoles humulone：Tolpyralate and atrazine There is preventive effect to green bristlegrass, Tolpyralate is preferable to the preventive effect of green bristlegrass, and atrazine is slightly worse to the preventive effect of green bristlegrass, azoles grass Ketone to no effect, with the increase of Tolpyralate and atrazine dosage, improves to green bristlegrass after using with to the preventive effect of green bristlegrass.
The actual measurement survival rate and theoretical survival rate of table 2Tolpyralate, atrazine and azoles humulone mixture to Amaranthus retroflexus
Tolpyralate, the atrazine co-toxicity to Amaranthus retroflexus mixed with azoles humulone：Three kinds of active components are to Amaranthus retroflexus Effective, atrazine is preferable to the preventive effect of Amaranthus retroflexus, and Tolpyralate and azoles humulone are relatively poor to the preventive effect of Amaranthus retroflexus, With the increase of atrazine dosage, the preventive effect of Amaranthus retroflexus is improved after using with.
The actual measurement survival rate and theoretical survival rate of table 3Tolpyralate, atrazine and azoles humulone mixture to the rhizome of nutgrass flatsedge
Tolpyralate, the atrazine co-toxicity to the rhizome of nutgrass flatsedge mixed with azoles humulone：Preventive effect of the azoles humulone to the rhizome of nutgrass flatsedge Preferably, Tolpyralate and atrazine are relatively poor to the preventive effect of the rhizome of nutgrass flatsedge, right after using with the increase of azoles humulone dosage The preventive effect of the rhizome of nutgrass flatsedge improves.
Toxicity Determination result shows that Tolpyralate, atrazine and azoles humulone are in weight ratio (0.75-12): (22.5-360):Used with the range of (0.5-8) and weeds are shown as with addition or synergistic effect, in weight ratio (0.75-6): (22.5-180):Being used with the range of (0.5-4) has preferable synergistic effect, expands control of weeds spectrum, has reached while anti- Except the purpose of corn field main weeds.
It is raw to survey embodiment 2：
The safety testing of Tolpyralate, atrazine and azoles humulone compounding to corn
In order to study the security that Tolpyralate, atrazine and azoles humulone mutually compound, inventor has done following examination Test, test reference《People's Republic of China's agricultural industry criteria NY/T 1155.8-2007 farm-chemical indoor determinations experiment is accurate Then-herbicide》8th part：The safety testing cauline leaf spray-on process of crop.
1st, reagent agent
98%Tolpyralate active compounds
98% atrazine active compound
95% azoles humulone active compound
2nd, for studying thing
Corn
Greenhouse pot culture method is used for the culture for studying thing, with 11 × 12cm plastic tubs, is placed in shallow-water tank, will not make The soil adopted back in the farmland of used herbicide is air-dried, and basin is filled after sieving, and dry ground is quantified at 4/5 in basin, P in soil H values 7.0, The content of organic matter 1.2%.After top-watered makes soil moisten completely, corn seed is quantified and broadcasted sowing in soil surface, according to Seed size earthing 0.5cm-2.0cm, indoor temperature 28-32 DEG C/18-25 DEG C (d/n), relative humidity 75% ± 15%.Culture During use the bottom infiltrating irrigation mode moisturizing of basin alms bowl, keep soil to be sufficiently humidified so as to.After emergence of corn, corn is set to 10 plants.
3rd, for trying weeds
Green bristlegrass, lady's-grass, purslane, Amaranthus retroflexus, the rhizome of nutgrass flatsedge
Greenhouse pot culture method is used for the culture for trying weeds, with 11 × 12cm plastic tubs, is placed in shallow-water tank, will not make The soil adopted back in the farmland of used herbicide is air-dried, and basin is filled after sieving, and dry ground is quantified at 4/5 in basin, P in soil H values 7.0, The content of organic matter 1.2%.After soil is moistened completely with basin alms bowl bottom infiltrating irrigation mode, pretreatment is quantified for examination weed seed Broadcast sowing in soil surface, according to seed size earthing 0.5cm-1.0cm, indoor temperature 28-32 DEG C/18-25 DEG C (d/n), relatively Humidity 75% ± 15%.The bottom infiltrating irrigation mode moisturizing of basin alms bowl is used in incubation, keeps soil to be sufficiently humidified so as to.Treat that weeds emerge Green bristlegrass, lady's-grass are set to 10 plants afterwards, purslane, Amaranthus retroflexus, the rhizome of nutgrass flatsedge are set to 5 plants.
4th, experimental design
Experiment sets 41 processing altogether, wherein Tolpyralate sets 1,2,4,8,16g a.i./dosage of mu 5 handle, green bristlegrass is gone Tianjin sets 30,60,120,240, the 480g a.i./dosage of mu 5 processing, azoles humulone sets 0.75,1.5,3,6,12g a.i./mu 5 Dosage processing, Tolpyralate+ atrazines+azoles humulone three is mixed to set up 0.75+22.5+0.5,0.75+45+1,0.75+90 separately +2、0.75+180+4、0.75+360+8、1.5+22.5+1、1.5+45+2、1.5+90+4、1.5+180+8、1.5+360+0.5、3 +22.5+2、3+45+4、3+90+8、3+180+0.5、3+360+1、6+22.5+4、6+45+8、6+90+0.5、6+180+1、6+ 360+2,12+22.5+8,12+45+0.5,12+90+1,12+180+2,12+360+4g a.i./dosage ratio of mu 25 processing, Another to set an auxiliary agent control, 41 processing, are repeated 4 times altogether.
5th, test method
It is placed in when corn 3-5 leaf phases, grass family and sedge weed 2-4 leaf phases, broad leaved weed during the 3-5 leaf phases in spray tower Spray (ASS-4 type pesticide spraying systems, DG8003 shower nozzles, atomisation pressure 2.75MPa, spouting liquid 30Kg/ mus), treated after dispenser certainly It is placed in after so air-drying in greenhouse and cultivates observation.
6th, crop is investigated
After dispenser, each processing corn of investigation whether there is symptom of chemical damage, detailed record symptom of chemical damage, grade if having, 21 after medicine Each processing corn fresh weight of its measurement, calculates fresh weight inhibition, the security with clear and definite test medicine to corn.
The poisoning evaluation index of table 4
Poisoning is classified Poisoning degree (%) As a result describe
0 0 Safety, no poisoning
1 1-10 Without obvious poisoning
2 11-30 Slight poisoning
3 31-50 Moderate poisoning
4 ＞ 50 Serious poisoning
7th, weedy rices
Growth conditions, poisoning symptom and the poisoning degree of periodical visual inspection observation weeds, record symptom of chemical damage after dispenser.After medicine 21 days fresh weight preventive effects that each processing is calculated 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.
8th, result and analysis：
Table 5 respectively handles the preventive effect to weeds and the poisoning classification to corn
It can be seen from Table 5 that Tolpyralate atrazine azoles humulone mixtures are compared with single dose, in weight ratio (0.75-12):(22.5-360):In the range of (0.5-8), preventive effect to corn field main weeds and equal to the security of corn Higher than single dose, to corn safety.
In summary, Tolpyralate has compounded significant synergistic effect within the specific limits with atrazine and azoles humulone, To crop safety, complex preparation is not only that corn field provides a kind of safe, practical herbicide, and greatly reduces enterprise With the cost of peasant household.
It is raw to survey embodiment 3：
Control Weeds in Maize Field field control effectiveness test I：
1st, test process
Experiment sets 14 processing, and 4 repetitions, totally 56 processing cells, often handle 20 square metres of plot area, random district's groups Arrangement.(1)-(11) 50%Tolpyralate atrazine azoles humulones wettable powder is reagent agent, (12)-(14) 60%Tolpyralate wettable powders, 48% atrazine wettable powder, 40% azoles humulone water dispersible granules are comparison medicine Agent.Every mu is watered 30 kilograms, using 552 third type sprayers (0.7mm apertures) even spraying.Field main weeds have green bristlegrass, Lady's-grass, purslane, Amaranthus retroflexus, lamb's-quarters, rhizome of nutgrass flatsedge etc..
2nd, pilot project and method
(1) security：After dispenser, the situation of growing of corn, security of the evaluation reagent agent to corn 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, weeds species and strain number are recorded respectively, calculate weeds strain preventive effect.
(3) result of the test
Security：Investigated after dispenser, chemicals treatment district corn plant height, leaf color and blank district are basically identical, show to supply Reagent agent (1)-(11) 50%Tolpyralate atrazine azoles humulone wettable powders are to corn safety.
Weeding result, is shown in Table 6：
Preventive effect of the table 650%Tolpyralate atrazine azoles humulone wettable powders to corn field weed
Note：(1) 50%Tolpyralate atrazines azoles humulone wettable powder (0.75:180:0.5)
(2) 50%Tolpyralate atrazines azoles humulone wettable powder (1:160:0.8)
(3) 50%Tolpyralate atrazines azoles humulone wettable powder (1.5:140:1.1)
(4) 50%Tolpyralate atrazines azoles humulone wettable powder (2:125:1.4)
(5) 50%Tolpyralate atrazines azoles humulone wettable powder (2.5:110:1.7)
(6) 50%Tolpyralate atrazines azoles humulone wettable powder (3:95:2)
(7) 50%Tolpyralate atrazines azoles humulone wettable powder (3.5:80:2.4)
(8) 50%Tolpyralate atrazines azoles humulone wettable powder (4:65:2.8)
(9) 50%Tolpyralate atrazines azoles humulone wettable powder (4.5:50:3.2)
(10) 50%Tolpyralate atrazines azoles humulone wettable powder (5:35:3.6)
(11) 50%Tolpyralate atrazines azoles humulone wettable powder (6:22.5:4)
(12) 60%Tolpyralate wettable powders
(13) 48% atrazine wettable powders
(14) 40% azoles humulone water dispersible granules
(15) blank control
As shown in Table 6, the 50%Tolpyralate atrazine azoles humulone wettable powders of different ratio are to common miscellaneous Careless strain preventive effect is superior to comparison medicament 60%Tolpyralate wettable powders, 48% green bristlegrass between 84.90%-97.20% Removing Tianjin wettable powder, 40% azoles humulone water dispersible granules, (weeds strain preventive effect is respectively 60.90%, 65.86% and 45.44%).Wherein Tolpyralate, atrazine and azoles humulone weight ratio are (0.75-6):(22.5-180):When (0.5-4) There is obvious preventive effect to corn field common weed, weeds strain preventive effect is all more than 84%；Tolpyralate, atrazine and azoles humulone Weight ratio is (1.5-4.5):(50-140):Preferable to corn field common weed preventive effect when (1.1-3.2), weeds strain preventive effect all exists More than 90%；And Tolpyralate, atrazine and azoles humulone weight ratio are 3:95:Preventive effect is more up to 97.20% when 2.Thus Illustrate, Tolpyralate, atrazine and azoles humulone are in weight ratio (0.75-6):(22.5-180):In the range of (0.5-4), to jade Common weeds have preventive effect in rice field, and this herbicidal composition is to corn safety.
Control Weeds in Maize Field field control effectiveness test II：
1st, test process
(1) 10%Tolpyralate atrazines azoles humulone wettable powder (3:95:2) 500g/ mus
(2) 50%Tolpyralate atrazines azoles humulone wettable powder (3:95:2) 100g/ mus
(3) 80%Tolpyralate atrazines azoles humulone wettable powder (3:95:2) 62.5g/ mus
Experiment sets 3 processing, and 4 repetitions, totally 12 processing cells, often handle 20 square metres of plot area, random district's groups Arrangement.(1)-(3) Tolpyralate atrazine azoles humulones wettable powder is reagent agent, and every mu is watered 30 kilograms, adopts With 552 third type sprayers (0.7mm apertures) even spraying.Field main weeds have green bristlegrass, lady's-grass, purslane, Amaranthus retroflexus, Lamb's-quarters, rhizome of nutgrass flatsedge etc..
2nd, 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, weeds species and strain number are recorded respectively, calculate weeds strain preventive effect.
3rd, result of the test：Herbicidal effect is shown in Table 7
Preventive effect of 30 days Tolpyralate atrazines azoles humulones to various weeds after the medicine of table 7
Note：(1) 10%Tolpyralate atrazines azoles humulone wettable powder (3:95:2)
(2) 50%Tolpyralate atrazines azoles humulone wettable powder (3:95:2)
(3) 80%Tolpyralate atrazines azoles humulone wettable powder (3:95:2)
As shown in Table 7, when the weight ratio of Tolpyralate, atrazine and azoles humulone is 3:95:When 2, different content Tolpyralate atrazine azoles humulone wettable powders more than 96%, show common weed strain preventive effect When Tolpyralate, atrazine and azoles humulone weight ratio are optimal proportion, the herbicidal composition pair of different activities component content Corn field main weeds have significant preventive effect.
In summary, instant component is reasonable, activity when preventive effect is administered alone better than each component, to grass family, broad-leaved And sedge weed has good preventive effect, control of weeds spectrum is expanded, has delayed the generation of herbicide resistance, to crop Safety, meets the security requirement of pesticidal preparations.

Claims (9)

  1. A kind of 1. herbicidal composition, it is characterised in that said composition is made up of tri- kinds of active components of A, B and C, wherein activity into Point A is Tolpyralate, and active component B is atrazine, and active component C is azoles humulone, the weight of the active components A, B and C Than for：(0.75-12):(22.5-360):(0.5-8).
  2. 2. herbicidal composition according to claim 1, it is characterised in that the weight ratio of active components A, B and C is： (0.75-6):(22.5-180):(0.5-4)。
  3. 3. herbicidal composition according to claim 2, it is characterised in that the weight ratio of active components A, B and C is： (1.5-4.5):(50-140):(1.1-3.2)。
  4. 4. herbicidal composition according to claim 3, it is characterised in that the weight ratio of active components A, B and C is：(2- 4):(65-125):(1.4-2.8)。
  5. 5. herbicidal composition according to claim 4, it is characterised in that the weight ratio of active components A, B and C is：3: 95:2。
  6. 6. according to the herbicidal composition any one of claim 1-5, it is characterised in that active component is in herbicide group Weight percentage in compound is 5~90%.
  7. 7. herbicidal composition according to claim 1, it is characterised in that the composition can be configured to agriculturally permit Perhaps any formulation.
  8. 8. herbicidal composition according to claim 7, it is characterised in that the combination dosage form be wettable powder, Water dispersible granules, dry suspending agent or dispersible oil-suspending agent.
  9. 9. application of the herbicidal composition described in claim 1 in Control Weeds in Maize Field.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008065907A1 (en) * 2006-11-28 2008-06-05 Ishihara Sangyo Kaisha, Ltd. Benzoylpyrazole compounds, process for their production and herbicides containing them
CN102245029A (en) * 2008-12-11 2011-11-16 石原产业株式会社 Herbicidal compositions containing benzoylpyrazole compounds
CN102342279A (en) * 2011-06-03 2012-02-08 陕西韦尔奇作物保护有限公司 Weeding composition containing carfentrazone-ethyl and triazine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008065907A1 (en) * 2006-11-28 2008-06-05 Ishihara Sangyo Kaisha, Ltd. Benzoylpyrazole compounds, process for their production and herbicides containing them
CN102245029A (en) * 2008-12-11 2011-11-16 石原产业株式会社 Herbicidal compositions containing benzoylpyrazole compounds
CN102342279A (en) * 2011-06-03 2012-02-08 陕西韦尔奇作物保护有限公司 Weeding composition containing carfentrazone-ethyl and triazine

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