CN104126590B - A kind of corn field herbicide composition containing topramezone - Google Patents
A kind of corn field herbicide composition containing topramezone Download PDFInfo
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- CN104126590B CN104126590B CN201410405052.7A CN201410405052A CN104126590B CN 104126590 B CN104126590 B CN 104126590B CN 201410405052 A CN201410405052 A CN 201410405052A CN 104126590 B CN104126590 B CN 104126590B
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Abstract
The invention discloses a kind of corn field herbicide composition containing topramezone, described compositions is made up of topramezone, mesotrione and atrazine, and the weight ratio of topramezone, mesotrione and atrazine is (0.5～40): (1～40): (5～80)；Content sum is described composition total weight the 5%～85% of topramezone, mesotrione and atrazine；This compositions can be configured to agriculturally allow suspending agent, water dispersible granules, the wettable powder of use or dispersible oil-suspending agent。Instant component is composite rationally, shows significant potentiation, improves the prevention effect to corn field weed, expands the preventing and treating spectrum of corn field weed, extends dispenser period, and reduce drug cost, and the dosage form of preparation is good to the safety of Semen Maydis。This compositions is to the prevention effect of corn field grassy weed and broad leaved weed preferably。
Description
Technical field
The invention belongs to technical field of compounded pesticide, relate to a kind of herbicidal composition, be specifically related to a kind of corn field herbicide composition containing topramezone。This herbicidal composition, except containing effective ingredient topramezone, also includes effective ingredient mesotrione and atrazine, it is adaptable to preventing and treating corn field weed。
Background technology
Corn field weed occurs general, of a great variety, mainly has broad leaved weeds such as Amaranthus retroflexus, Herba chenopodii, Herba seu Flos Convolvuli arvensis, Herba Solani Nigri, Amaranthus mangostanus L., Herba Abutili, Herba Acalyphae, Herba Portulacae, Herba Xanthii, Herba Commelinae, cattle Herba stellariae mediae etc.；Grassy weed is barnyard grass, Herba Digitariae, Herba Setariae Viridis, Herba Eleusines Indicae, Bermuda grass, Semen Euphorbiae etc. such as；Sedge weed such as Rhizoma Cyperi etc.。Weeds and Semen Maydis contention moisture, nutrient, illumination and space, affect the normal growth of Maize at Seedling Stage, even can cause Severe Reduction。Maize at Seedling Stage is the most serious by the harm of weeds, broadcasts before rear Seedling and two critical periods of early stage after Seedling so the chemical prevention of weeds should be done a good job of it。People use chemical herbicide weeding always, but owing to major part herbicide herbicide spectrum own is limited, and life-time service easily causes the generation of Weed Resistance, it is therefore desirable to existing herbicide is improved by people so that it is have better herbicidal effect and broader herbicide spectrum。
Topramezone (Topramezone), it is again benzene pyrazoles oxadiazon, belong to pyrazoline type herbicides, broad weed-killing spectrum, corn field overwhelming majority grassy weed and broad leaved weed there is preventive effect, can effectively prevent and kill off the weeds such as Herba Setariae Viridis, Herba Eleusines Indicae, Herba chenopodii, knotweed, Herba Abutili, Herba Portulacae, Herba Xanthii, Herba Solani Nigri, but the preventive effect of Herba Digitariae and barnyard grass is undesirable。Topramezone can be absorbed by the blade of weeds, root and stem, and Bidirectional Conduction, the synthesis of remote-effects carotenoid up and down in plant, interference chloroplast synthesizes and function under light illumination, ultimately resulting in the serious albefaction of weeds lobus cardiacus, tissue necrosis, weeds are dead。Field test shows, the Semen Maydis of the types such as conventional field corn, sweet corn, pop corn, glutinous maize is all shown extraordinary safety by topramezone, is safest herbicide in all after-seedling herbicide for maize kinds on current domestic and international market。Topramezone is also the herbicide after seedling that herbicide is fastest in the market, sprays medicine and just can take effect for 2～4 days at 20 DEG C, and albefaction poisoning symptom occurs in weeds above-ground plant parts。
Mesotrione (Mesotrione); have another name called mesotrione; chemical name: 2-(4-mesyl-2-nitro benzoyl) hexamethylene-1; 3-diketone; relative molecular weight 339.32; it is a kind of three ketones herbicide, before belonging to selectivity inner sucting conduction type maize seedling, herbicide after seedling。Mesotrione can suppress the biosynthesis of carotenoid, makes weeds occur after albefaction dead, and it by the leaf of plant and root absorption, at plant xylem and phloem to top, transmit downwards, can have action of contace poison and wholesomeness。Mesotrione can effectively prevent and treat the broadleaf weeds such as corn field Herba Commelinae, Herba Abutili, knotweed, Herba Acalyphae, Herba chenopodii, Amaranthus retroflexus, to barnyard grass, Herba Digitariae, etc. part monocotyledon weed have effect of well preventing and kill off, to corn safety。Under normal crop rotation, to crop safeties such as succession crop such as wheat and barley, Brassica campestris L, Rhizoma Solani tuber osi, Radix Betaes。The using method of mesotrione be stem and leaf spraying, one season Semen Maydis use once, to corn safety under recommended dose。
Atrazine (Atrazine), the chloro-4-ethylamino-6-isopropylamino-1,3,5-triazines of chemical name: 2-, relative molecular weight 215.7, before belonging to selectivity inner sucting conduction type Seedling, herbicide after seedling。Plant is to the absorption of atrazine based on root absorption, and stem and leaf absorbs seldom, and atrazine is transmitted to rapidly plant separate living tissue and leaf portion, and interference photosynthesis makes weeds lethal。In the resistance crop bodies such as Semen Maydis, atrazine is decomposed generation innocuous substance by Semen Maydis ketolase, thus to seeding corn and other crops safety。The lasting period of atrazine is longer, and herbicide spectrum is relatively wide, can prevent and kill off multiple broad leaved weed, Semen Maydis especially has good selectivity。It is pointed out that atrazine easily by rainwater drip washing to soil deeper, some deep root grass is also effective, but easily produce poisoning, when weeds generation density is higher, or when plant is bigger, it is difficult to thoroughly kill weeds。
Being learnt by the test of inventor's many years of field, topramezone is undesirable to the part monocotyledon weed preventive effect such as Herba Digitariae, barnyard grass, and the phenomenon of a large amount of weeds demutation often occurs in the later stage, but Herba Setariae Viridis preventive effect is good。Although mesotrione herbicide spectrum is very wide, but to the preventive effect of grassy weed less than the preventive effect to broad leaved weed, mesotrione is had natural toleration by Herba Setariae Viridis simultaneously, but barnyard grass, Herba Digitariae is better in variable rate technology effect。Atrazine single dose uses in Production of Large Fields, and corn field annual gramineae and broad leaved weed preventive effect is all undesirable, it is impossible to meet peasant household's Production requirement, but in this compound, absorption is relatively strong, and deep root weeds are also had certain preventive effect。
Topramezone and atrazine, it is impossible to solve the problem that Herba Digitariae, barnyard grass preventive effect is undesirable；Mesotrione and atrazine, it is impossible to solve the problem that Herba Setariae Viridis preventive effect is undesirable；Topramezone is composite with mesotrione, can solve topramezone to the preventive effect of Herba Digitariae, barnyard grass the general and mesotrione problem to the anti-heterodyne of Herba Setariae Viridis, but the two composite shows summation action, and after adding atrazine, show obvious potentiation, and the problem to deep root Weed-control effect difference can be solved。It addition, the topramezone single dose phase of using is generally weeds 2～5 leaf phase, the mesotrione single dose phase of using is weeds 3～5 leaf phases, and the atrazine single dose phase of using is weeds 3～4 leaf phases, and after three's combination, Dressing date can extend to weeds 2～9 leaf phase。
Inventor finds still do not have the compositions patent that topramezone, mesotrione and atrazine three are composite at present through retrieval。Therefore, the problem of the weed control for running in solution Maize Production, it is necessary to develop the Herbicidal combinations that a kind of topramezone, mesotrione and atrazine three are composite。
Summary of the invention
First purpose of the present invention is to solve that topramezone is undesirable to Herba Digitariae and barnyard grass preventive effect and problem that mesotrione is undesirable to Herba Setariae Viridis preventive effect, and expands herbicide spectrum simultaneously, reduces dosage, extends dispenser period, reduces cost accounting。The present invention selects topramezone, mesotrione and the atrazine that the mechanism of action is different, it is provided that a kind of corn field herbicide composition containing topramezone。Said composition shows significant potentiation, improves the prevention effect to corn field weed, expands the preventing and treating spectrum of corn field weed, extends dispenser period, and reduce drug cost。
Second purpose of the present invention is in that to provide the herbicidal composition preparation formulation containing topramezone, mesotrione and atrazine。
3rd purpose of the present invention is in that the application on preventing and treating corn field weed of the offer herbicidal composition containing topramezone, mesotrione and atrazine。
For achieving the above object, the present invention adopts the technical scheme that and provides a kind of corn field herbicide composition containing topramezone。Described compositions is made up of topramezone, mesotrione and three kinds of active component of atrazine, and wherein the weight ratio of topramezone, mesotrione and atrazine is (0.5～40): (1～40): (5～80)。
Preferred as technical scheme, the weight ratio of the active component topramezone of described compositions, mesotrione and atrazine is (1～30): (1～20): (5～50), and content sum is described composition total weight the 5%～85% of described topramezone, mesotrione and atrazine。
The described corn field herbicide composition containing topramezone, the preparation formulation can prepared according to method known in those skilled in the art can be suspending agent, water dispersible granules, wettable powder or dispersible oil-suspending agent。Those skilled in the art according to existing knowledge it is known that prepare above-mentioned preparation formulation also need to screen multiple suitable auxiliary agent。
To suspending agent, spendable auxiliary agent has: dispersant, in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE2020 (Huntsman Corporation of U.S. product, alkyl naphthalene sulfonic acid salt) one or more；Emulsifying agent, one or more in Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: Span60), Tween-60 # (common name: polyoxyethylene sorbitan stearate), agriculture breast 1601# (common name: triphenoethyl benzene phenol polyoxyethylene polyoxypropylene block polymer), TERSPERSE4894 (Huntsman Corporation of U.S. product)；Wetting agent, in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulfate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500 (Huntsman Corporation of U.S. product) one or more；Thickening agent, in xanthan gum, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more；Preservative, in formaldehyde, benzoic acid, sodium benzoate one or more；Stabilizer, in epoxy soybean oil, epoxychloropropane, triphenyl phosphate one or more；Defoamer, such as silicone based defoamer；Antifreezing agent, in ethylene glycol, propylene glycol, glycerol, carbamide, inorganic salts such as sodium chloride one or more；Water is deionized water。
For water dispersible granules, those skilled in the art are very familiar with using corresponding auxiliary agent to complete the present invention。Dispersant, in polycarboxylate (TERSPERSE2700, T36, GY-D06 etc.), lignosulfonates, alkylnaphthalene sulfonate one or more；Wetting agent, in alkyl sulfate, alkylsulfonate, naphthalene sulfonate one or more；Disintegrating agent, in ammonium sulfate, sodium sulfate, polyvinylpyrrolidone, starch and derivant, bentonite one or more；Binding agent, one or more in starch, glucose, polyvinyl alcohol, Polyethylene Glycol, sodium carboxymethyl cellulose, sucrose；Filler, as kieselguhr, Kaolin, white carbon, fine particle calcium carbonate, Pulvis Talci, attapulgite, potter's clay one or more。
To wettable powder, spendable auxiliary agent has: dispersant, such as polycarboxylic acid salt (TERSPERSE2700, T36, GY-D06 etc.), lignin sulfonate (Ufoxane3A, BorresperseNA, BorresperseCA-SA etc.), naphthalene and alkyl naphthalene formaldehyde condensate sulfonates class (NNO, MF, MorwetD-425, TamolNN, TERSPERSE2020 etc.), Nekal BX (nekal), EO-PO block polyether class, alkylphenol-polyethenoxy base ether phosphate, alkylphenol-polyethenoxy base ether formaldehyde condensation products sulfate (SOPA), in one or more；Wetting agent, in Sulfates (K-12), Sulfonates (ABS-Na, BX, Terwet1004 etc.), compound wetting agent (MorwetEFW) one or more；Filler, as kieselguhr, Kaolin, fine particle calcium carbonate, Pulvis Talci, white carbon, attapulgite, potter's clay, ammonium sulfate, carbamide, sucrose, glucose, corn starch, sodium sulfate, sodium polyphosphate etc. one or more。
To dispersibling oil-suspending agent, spendable auxiliary agent has: dispersant, in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE2020 (Huntsman Corporation of U.S. HUNTSMAN product, alkyl naphthalene sulfonic acid salt) one or more；Emulsifying agent, such as BY (castor oil polyoxyethylene ether) series emulsifying agent (BY-110, BY-125, BY-140), Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: sorbitan monostearate), Tween-60 # (common name: sorbitan monostearate polyoxyethylene ether), one or more in agriculture breast 1601# (common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), TERSPERSE4894 (Huntsman Corporation of U.S. product)；Wetting agent, in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulfate, alkylphenol polyoxyethylene phosphate ester, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500 (Huntsman Corporation of U.S. product) one or more；Thickening agent, in white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more；Antifreezing agent, in ethylene glycol, propylene glycol, glycerol, carbamide, inorganic salts such as sodium chloride one or more；Disperse medium, in soybean oil, Oleum Brassicae campestris, Semen Maydis oil, methyl oleate, diesel oil, machine oil, mineral oil one or more。
The technical scheme that the present invention takes farther includes, the described corn field herbicide composition containing topramezone purposes on preventing and treating corn field weed。
Preferred as technical scheme, the described corn field herbicide composition containing topramezone purposes on preventing and treating corn field grassy weed and broad leaved weed。
Compared with prior art, Herbicidal combinations of the present invention has the beneficial effect that
(1) tested by many years of field, the present invention has filtered out the Herbicidal combinations of topramezone, mesotrione and atrazine ternary built, activity of weeding and the effect of these three effective ingredient are more than simple superposition, but show significant potentiation, improve the prevention effect to corn field weed, expand the preventing and treating spectrum of corn field weed, extend dispenser period, and reduce drug cost。Especially, this Herbicidal combinations is especially to the preventive effect of corn field grassy weed and broad leaved weed preferably。
(2) present invention well solves the problem that single dose topramezone is undesirable to Herba Digitariae and barnyard grass preventive effect and mesotrione is undesirable to Herba Setariae Viridis preventive effect, the multiple dosage form of Herbicidal combinations preparation is good to corn safety, meets the security requirement of pesticidal preparations。
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage (beneficial effect) clearly understand, below in conjunction with embodiment, the present invention is further elaborated on。
(1) part prepared by preparation
First preparation topramezone, mesotrione and atrazine compositions can prepared illustrates。The processing technique of the various preparation of the present composition is prior art, can be varied from according to different situations。It should be noted that the percentage ratio in following embodiment ownership agent prescription is all weight percentage。
Example of formulations 1
Weigh 0.5% topramezone, 9.5% mesotrione, 60% atrazine, 3%TERSPERSE4894 (Huntsman Corporation of U.S. product), 2%TERSPERSE2500 (Huntsman Corporation of U.S. product), 2% dispersing agent NNO, 2% aluminium-magnesium silicate, 0.2% xanthan gum, 5% ethylene glycol, 0.5% formaldehyde, 0.5% organic silicon defoamer (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Products), surplus are deionized water。Above-mentioned raw materials is blended, and high speed shear dispersion 30min, is 70% topramezone mesotrione atrazine suspending agent with preparing active constituent content after sand mill sand milling。
Example of formulations 2
Weigh 3% topramezone, 40% mesotrione, 17% atrazine, 2%TERSPERSE2020 (Huntsman Corporation of U.S. product), 2% this dish-60#, 2% Tween-60 #, 1%TERSPERSE2500 (Huntsman Corporation of U.S. product), 2% bentonite, 0.3% xanthan gum, 3% propylene glycol, 0.5% benzoic acid, 0.5% organic silicon defoamer (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Products), 1% epoxychloropropane, surplus are deionized water。Above-mentioned raw materials is blended, and high speed shear dispersion 30min, is 60% topramezone mesotrione atrazine suspending agent with preparing active constituent content after sand mill sand milling。
Example of formulations 3
Weigh 3% topramezone, 12% mesotrione, 40% atrazine, 3.5% agriculture breast 2201,1.5%TERSPERSE2500 (Huntsman Corporation of U.S. product), 2% sodium lignin sulfonate, 2% polyvinyl alcohol, 0.2% xanthan gum, 5% ethylene glycol, 0.5% benzoic acid, 0.5% organic silicon defoamer (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Products), surplus are deionized water。Above-mentioned raw materials is blended, and high speed shear dispersion 30min, is 55% topramezone mesotrione atrazine suspending agent with preparing active constituent content after sand mill sand milling。
Example of formulations 4
Weigh 40% topramezone, 20% mesotrione, 20% atrazine, 2%TERSPERSE2700 (polycarboxylate, Huntsman Corporation of U.S. product), 2% sodium lignin sulfonate, 1% Nekal BX (nekal), 1%K-12 (sodium lauryl sulphate), 1%PVA (molecular weight 2000), 2% polyvinylpyrrolidone, Kaolin add to 100% weight portion。Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, to produce active constituent content be 80% topramezone mesotrione atrazine water dispersible granule for ultra micro comminution by gas stream, mixing, granulation step。
Example of formulations 5
Weigh 5% topramezone, 25% mesotrione, 5% atrazine, 2%T36 (polycarboxylate), 2% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 2% Nekal BX (nekal), 2%K-12 (sodium lauryl sulphate), attapulgite add to 100% weight portion。Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, to produce active constituent content be 35% topramezone mesotrione atrazine water dispersible granule for ultra micro comminution by gas stream, mixing, granulation step。
Example of formulations 6
Weigh 10% topramezone, 5% mesotrione, 50% atrazine, 2%GY-D06 (polycarboxylate), 3% sodium lignin sulfonate, 2% Nekal BX (nekal), 2%K-12 (sodium lauryl sulphate), Pulvis Talci add to 100% weight portion。Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, to produce active constituent content be 65% topramezone mesotrione atrazine water dispersible granule for ultra micro comminution by gas stream, mixing, granulation step。
Example of formulations 7
Weigh 20% topramezone, 1% mesotrione, 54% atrazine, 4%TERSPERSE2700,3% alkylnaphthalene sulfonate formaldehyde condensation products (TamolNN), 1% sodium lauryl sulphate, attapulgite fill up the weight portion to 100%。Above-mentioned raw materials is blended, to be prepared into active constituent content be 75% topramezone mesotrione atrazine wettable powder for ultra micro comminution by gas stream, hybrid technique step。
Example of formulations 8
Weigh 30% topramezone, 6% mesotrione, 4% atrazine, 6% calcium lignosulfonate, 4% alkylnaphthalene sulfonate formaldehyde condensation products (MorwetD-425), 2% sodium lauryl sulphate, white carbon fill up the weight portion to 100%。Above-mentioned raw materials is blended, to be prepared into active constituent content be 40% topramezone mesotrione atrazine wettable powder for ultra micro comminution by gas stream, hybrid technique step。
Example of formulations 9
Weigh 2% topramezone, 3% mesotrione, 80% atrazine, 2% calcium lignosulfonate (BorresperseCA-SA), 2% alkylnaphthalene sulfonate formaldehyde condensation products (TERSPERSE2020), 2% Sulfonates (Terwet1004), sodium sulfate fill up the weight portion to 100%。Above-mentioned raw materials is blended, to be prepared into active constituent content be 85% topramezone mesotrione atrazine wettable powder for ultra micro comminution by gas stream, hybrid technique step。
Example of formulations 10
Weigh 10% topramezone, 10% mesotrione, 10% atrazine, 2%TERSPERSE2020 (Huntsman Corporation of U.S. product), 4%BY-125#, 3% Tween-60 #, 4% agriculture breast 2201#, 3% Nongru-700 #, 1%TERSPERSE2500 (Huntsman Corporation of U.S. product), 2% white carbon, 5% propylene glycol, methyl oleate add to 100% weight portion。Above-mentioned raw materials is blended, and high speed shear dispersion 30min, is that 30% topramezone mesotrione atrazine dispersibles oil-suspending agent with preparing active constituent content after sand mill sand milling。
Example of formulations 11
Weigh 15% topramezone, 15% mesotrione, 20% atrazine, 2% dispersing agent NNO, 3% this dish-60#, 8%BY-110,1%TERSPERSE2500 (Huntsman Corporation of U.S. product), 1% aluminium-magnesium silicate, 3% glycerol, soybean oil add to 100% weight portion。Above-mentioned raw materials is blended, and high speed shear dispersion 30min, is that 50% topramezone mesotrione atrazine dispersibles oil-suspending agent with preparing active constituent content after sand mill sand milling。
Example of formulations 12
Weigh 5% topramezone, 10% mesotrione, 30% atrazine, 2% polycarboxylate, 3% this dish-60#, 6%BY-125,2%TERSPERSE4894,1% naphthalene sulfonate, 1% bentonite, 3% sodium chloride, Semen Maydis oil add to 100% weight portion。Above-mentioned raw materials is blended, and high speed shear dispersion 30min, is that 45% topramezone mesotrione atrazine dispersibles oil-suspending agent with preparing active constituent content after sand mill sand milling。
Example of formulations 13
Weigh 1% topramezone, 1% mesotrione, 3% atrazine, 2% polycarboxylate, 5% agriculture breast 2201,6%BY-125,2% Tween-60 #, 1% naphthalene sulfonate, 2% attapulgite, 3% sodium chloride, Oleum Ricini add to 100% weight portion。Above-mentioned raw materials is blended, and high speed shear dispersion 30min, is that 5% topramezone mesotrione atrazine dispersibles oil-suspending agent with preparing active constituent content after sand mill sand milling。
(2) Biometric portion
Assays Example 1
The Toxicity Determination of corn field weed is tested by topramezone, mesotrione and atrazine。
In order to prevent and treat corn field weed, inventor has carried out mutual composite potentiation research with topramezone, mesotrione and atrazine, method particularly includes:
Subjects is barnyard grass (Echinochloacrusgalli), Herba Setariae Viridis (Setariaviridis) and Amaranthus retroflexus (Amaranthusretroflexus)。Former medicine is configured to the test medicine needed, and test method is with reference to " People's Republic of China's agricultural industry criteria NY/T1155.7-2006 farm-chemical indoor determination test rule herbicide the 7th part: composite synergy measures "。First single dose and each compound drug arrange 3～4 variable concentrations gradients (preventive effect sets by geometric progression in the scope of 5%～90%), if 1 clear water comparison, each process is repeated 4 times。
Nebulization after test employing Seedling, medicament is now with the current, adopts pot-culture method to cultivate for examination weeds, adopt 11 × 12cm plastic tub, by air-dry for the corn field soil not using herbicide, sieve after dress basin, quantitative 4/5 place of dry ground in basin, soil pH 7.0, the content of organic matter 1.2%。Adopt infiltrating irrigation mode bottom basin alms bowl, make soil complete wetting。After barnyard grass, Herba Setariae Viridis and Amaranthus retroflexus seed that upper one year, field gathered being soaked, each about 60 uniform program requests are at soil surface, and blinding 0.5cm～1cm is placed on temperature normal temperature laboratory and cultivates, with infiltrating irrigation mode moisturizing bottom basin alms bowl in incubation, to keep ground moistening。After weeds emerge, every basin weeds being determined strain is 50 strains, when weeds 3～5 leaf phase, is uniformly sprayed onto on weeds plant with laryngeal spray by medicinal liquid, to be uniformly thoughtfully as the criterion, continues to be placed in temperature indoor cultivation and observe after dispenser。
After dispenser, periodical visual inspection observes the growth conditions of weeds, poisoning symptom and poisoning degree, within after medicine 15 days, cuts off each green portion on the ground that processes, employing scales/electronic balance weighing, calculates actual survival rate E and theoretical survival rate E0。Check by Gowing method, evaluate arbitrarily both mixed synergy types to weeds, check by Colby method, evaluate the mixed synergy type to weeds of three。
Actual survival rate E (%)=(treatment region weeds fresh weight/check plot weeds fresh weight) × 100
Theoretical survival rate E0(%)=A+B × (100-A)/100 (Binary mixture)
In formula, A, B represent the actual survival rate of 2 kinds of single doses respectively。Work as E0During-E > 10%, illustrate to produce potentiation；Work as E0During-E <-10%, illustrate to produce antagonism；Work as E0-E, between ± 10% time, illustrates to produce summation action。
Theoretical survival rate E0(%)=A × B × C × ... × N/100(n-1)(ternary and above mixed)
In formula, A, B, C, N represent the actual survival rate of n kind single dose respectively, and n is complex weedicide kind quantity。Work as E0During-E > 10%, illustrate to produce potentiation；Work as E0During-E <-10%, illustrate to produce antagonism；Work as E0-E, between ± 10% time, illustrates to produce summation action。
Topramezone, mesotrione and atrazine combine the Toxicity Determination result to barnyard grass in Table 1。Topramezone, mesotrione and atrazine combine the Toxicity Determination result to Herba Setariae Viridis in Table 2。Topramezone, mesotrione and atrazine combine the Toxicity Determination result to Herba Setariae Viridis in Table 3。
Table 1 topramezone, mesotrione and the atrazine combination Toxicity Determination to barnyard grass
Table 2 topramezone, mesotrione and the atrazine combination Toxicity Determination to Herba Setariae Viridis
Table 3 topramezone, mesotrione and the atrazine combination Toxicity Determination to Amaranthus retroflexus
Toxicity Determination result shows: topramezone, mesotrione with atrazine according to (0.5～40): (1～40): (5～80) ratio is mixed, grassy weed barnyard grass, Herba Setariae Viridis and broad leaved weed Amaranthus retroflexus are all had good virulence, and potentiation is obvious。
Assays Example 2
Preventing and treating corn field weed field control effectiveness test。
Inventor has carried out example of formulations 3 (55% topramezone mesotrione atrazine suspending agent) in 2014 in Jingyang County, Shaanxi Province and has prevented and treated corn field weed field control effectiveness test, demonstrates this medicament prevention effect to corn field weed and the safety to Semen Maydis。Trial crops is Semen Maydis, and controlling object is corn field weed (barnyard grass, Herba Setariae Viridis, chenopodium glaucum linn, Amaranthus retroflexus), and weed size is in 2～5 leaf phases。Test is located at Jingyang County, Xianyang, and experimental plot physical features is smooth, and soil is loam, middle fertility, and pH value 7.1, during test, rich water quality management is medium。Test medicine and dosage refer to table 4。Separately set blank, often process 4 times and repeat, every community 30m2, Gong40Ge community, random district, community group arranges。Adopt conventional nebulization, mu dispenser liquid 45kg。
Corn field weed field control effectiveness test result prevented and treated by table 4
Field test results shows, corn field weed is had good prevention effect by 55% topramezone mesotrione atrazine suspending agent, by 30 grams/acre, 35 grams/acre, spray 1 time for 40 grams/acre, to the average preventive effect of 15 days after corn field weed medicine respectively 85.02%, 89.95%, 93.28%, it is substantially better than 50% topramezone mesotrione suspending agent 10 grams/acre, 40% topramezone atrazine suspending agent 40 grams/acre, 25% mesotrione atrazine suspending agent 200 grams/acre, 30% topramezone suspending agent 7 grams/acre, 15% mesotrione suspending agent 60 grams/acre, the preventive effect of 50% atrazine suspending agent 150 grams/acre。By to significance of difference analysis in after medicine 15 days, difference reaches pole significant level。
Security survey, observes during test, and all reagent agents, to corn growth safety, occur without poisoning phenomenon。
As can be seen from the above embodiments, first active component topramezone, second active component mesotrione and the 3rd active component atrazine are by weight (0.5～40): (1～40): (5～80) are composite, especially by weight (1～30): (1～20): (5～50) are composite, and can be made into suspending agent, water dispersible granules, wettable powder, dispersible oil-suspending agent, corn field weed is had significant prevention effect, potentiation is obvious, reduce dosage and drug cost, extend insecticide spraying time, and corn safety is good, it it is the favourable agents of preventing and treating corn field weed, therefore have wide practical use in Maize Production。
In sum, the compositions of the present invention is to adopt three kinds of active component compound schemes, its activity and herbicidal effect are not the simple superposition of each composition activity, single with existing or compared with binary built preparation, except having significant herbicidal effect, and have significant potentiation, herbicide spectrum expands, and cost accounting reduces, and insecticide spraying time is long, good to doing safety, meet the security requirement of pesticidal preparations。
Above in conjunction with embodiment, the present invention done further narration, but the present invention has been not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, it is also possible to make a variety of changes under the premise without departing from present inventive concept。
Claims (6)
1. the corn field herbicide composition containing topramezone, it is characterized in that, described compositions active component is made up of topramezone, mesotrione and atrazine, and the weight ratio of topramezone, mesotrione and atrazine is (0.5～40): (1～40): (5～80)。
2. the corn field herbicide composition containing topramezone according to claim 1, it is characterised in that the weight ratio of described topramezone, mesotrione and atrazine is (13～26): (1～15): (5～30)。
3. the corn field herbicide composition containing topramezone according to claim 1 and 2, it is characterised in that content sum is described composition total weight the 5%～85% of described topramezone, mesotrione and atrazine。
4. the corn field herbicide composition containing topramezone according to claim 1 and 2, it is characterised in that the dosage form of described compositions is suspending agent, water dispersible granules, wettable powder or dispersibles oil-suspending agent。
5. the corn field herbicide composition containing topramezone according to claim 1 purposes on preventing and treating corn field weed。
6. the corn field herbicide composition containing topramezone according to claim 5 purposes on preventing and treating corn field grassy weed and broad leaved weed。
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| CN104782635A (en) * | 2015-04-16 | 2015-07-22 | 广东中迅农科股份有限公司 | Pesticide composition containing topramezone |
| CN105191949A (en) * | 2015-10-10 | 2015-12-30 | 广东中迅农科股份有限公司 | Pesticide composition containing tembotrione, topramezone and atrazine |
| CN105409999A (en) * | 2015-12-24 | 2016-03-23 | 安徽美兰农业发展股份有限公司 | Topramezone, nicosulfuron and atrazine compounded dispersible oil-based suspension agent and preparation method thereof |
| CN111436444A (en) * | 2020-05-29 | 2020-07-24 | 京博农化科技有限公司 | Pesticide composition containing topramezone, flufenacet and atrazine |
| CN111955465A (en) * | 2020-07-20 | 2020-11-20 | 京博农化科技有限公司 | Weeding composition containing topramezone, mesotrione and bromoxynil octanoate and application thereof |
| CN111955467A (en) * | 2020-07-20 | 2020-11-20 | 京博农化科技有限公司 | Corn field herbicide composition containing topramezone, composition preparation and application thereof |
| CN111955466A (en) * | 2020-07-20 | 2020-11-20 | 京博农化科技有限公司 | Weeding composition containing topramezone, tembotrione and nicosulfuron, preparation and application |
| CN111771892B (en) * | 2020-08-11 | 2021-06-15 | 合肥尚邦植保科技有限公司 | Weeding composition containing topramezone, mesotrione and terbuthylazine |
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| CN102334484A (en) * | 2011-11-07 | 2012-02-01 | 河北博嘉农业有限公司 | Herbicide composite |
| CN102986705A (en) * | 2012-11-30 | 2013-03-27 | 王学权 | Herbicide composition containing topramezone |
| CN103392710A (en) * | 2013-07-30 | 2013-11-20 | 河北博嘉农业有限公司 | Tembotrions compound cornfield herbicide |
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| CN102334484A (en) * | 2011-11-07 | 2012-02-01 | 河北博嘉农业有限公司 | Herbicide composite |
| CN102986705A (en) * | 2012-11-30 | 2013-03-27 | 王学权 | Herbicide composition containing topramezone |
| CN103392710A (en) * | 2013-07-30 | 2013-11-20 | 河北博嘉农业有限公司 | Tembotrions compound cornfield herbicide |
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