The herbicidal composition that contains penoxsuam
Technical field
The present invention relates to a kind of herbicide composition for paddy fields, specifically the composition of penoxsuam and butachlor, the third careless amine, mefenacet, bentazone, nitre sulphur humulone or Bing Que Evil humulone.
Background technology
Penoxsuam (penoxsulam) chemical name: 2-(2,2-difluoro ethoxy)-N-(5,8-dimethoxy (1,2,4) triazole-(1,5-C) pyrimidine-2-base)-6-trifluoromethyl-benzene sulfanilamide (SN) belongs to triazolopyrimidine sulfonamides herbicide, and molecular structure is:
Its mechanism of action is to suppress the acetyl-lactic acid ester synzyme to work, and medicine absorbs via grass cutting blade, leaf sheath or root, conducts to meristematic tissue, causes weed growth to stop, and yellow is dead then.Be used to prevent and treat rice direct seeding field annual gramineae, sedge family and part broad leaved weed, this medicament action target is acetolactate synthestase (ALS), the weeds of anti-sulfonylurea herbicide significantly are lower than other sulfonylurea medicaments to the cross resistance level of triazolopyrimidine sulfonamides herbicide according to the literature, and the activity of weeding of penoxsuam and other ALS inhibitor also have notable difference, so penoxsuam is the comparatively ideal weed killer herbicide of control weeds in paddy field.
Butachlor (butachlor) is acetamide-group herbicides, chemical name N-(fourth oxygen methyl)-a-chloro-2 ', 6 '-diethyl acetanil, and chemical structural formula:
Its mechanism of action is the young shoot absorption by weeds, then conducts complete stool and works.All can use with seedling stage before the bud.Behind the plant absorbing butachlor, suppress in vivo and destroy protease, influence the formation of protein, suppress weeds young shoot and young root normal growth and grow, thereby make weeds death.Can prevent and kill off annual nutgrass flatsedge and part annual broadleaf weed, as annual gramineous weed and some broadleaf weeds such as barnyard grass grass, lady's-grass grass, green foxtail, fescue, Monochoria vaginalis, Drilgrass, special-shaped sand-grasses.
The third careless amine (pretilachlor) is acetamide-group herbicides, chemical name 2-chloro-2, and 6-diethyl phenyl-N-(the 2-third oxygen ethyl) acetanil, chemical structural formula:
The third careless amine is that selectivity is sprouted pretreating reagent, can pass through plant hypocotyl, mesocotyl and coleoptile and absorb, and root slightly absorbs, and directly disturbs weeds body internal protein synthetic, and photosynthetic and respiration are had remote-effects.The weeds seedling that is injured distortion, primary leaf difficulty are stretched out, blade deepen green, stop growing, until death.Paddy rice has stronger capacity of decomposition to the third careless amine, must selectivity thereby have.Be used for paddy rice and prevent and kill off annual gramineae and broad leaved weeds such as barnyard grass grass, moleplant seed, eleusine indica, needle spikesedge herb, alisma canaliculatum, Herba Ammanniae Bacciferae, special-shaped He grass, cyperus iria, false loosestrife, Monochoria vaginalis.
Mefenacet (mefenacet) is a kind of selectivity inner sucting conduction type acetamide-group herbicides, chemical name 2-(1,3-benzothiazole-2-base oxygen base)-N-exalgine, and chemical structural formula:
This medicine is mainly by bud scale and root absorption, conducts to young shoot and the tender leaf of weeds through xylem and phloem, stops weed growth point cell division to be extended, and finally causes plant death.Because solvability is low in water, so under the water conservation condition, the dispenser activity of weeding is the highest.Soil is very strong to this product absorption affinity, the dose major part is adsorbed on upper soll layer after the dispenser, and 1 centimetre of upper soll layer with interior formation processing layer, can avoid contacting of paddy growth point and medicament like this, make it produce higher safety, and the weeds such as barnyard grass grass that growing point is in upper soll layer are had stronger prevention fertility and kill ability, and the perennial weed with seminal propagation on top layer also there is inhibitory action.Can effectively prevent and kill off paddy field grassy weed, difformed galingale herb, as needle spikesedge herb, short arrowhead, rhizoma alismatis, the wide dish of eye, firefly Lin, Herba Cyperi Glomerati etc.
Bentazone (bentazone) is the inner sucting conduction type weed killer herbicide, have efficient, low toxicity, broad weed-killing spectrum, no poisoning, with advantages such as other herbicide mixtures are good, this medicine has the control efficiency of excellence to broad leaved weed and sedge weed.Chemical name 3-isopropyl (1H)-benzo-2,1,3-thiadiazine-4-(3H)-ketone 2,2 dioxide, chemical structural formula:
Nitre sulphur humulone (mesotrione) is the three ketones weed killer herbicide, can prevent and treat the broad leaved weed and the part grassy weed of paddy field, and the preventive effect of broad leaved weed is better than grass family.Chemical name 2-(4-mesyl-2-nitro-benzoyl) cyclohexane-1, the 3-diketone, chemical structural formula:
Its mechanism is for suppressing the activity of PHPPA dioxygenase (HPPD), and HPPD can be converted into amino acid network propylhomoserin plastoquinone, and plastoquinone is the co-factor of phytoene desaturase, is the biosynthetic key enzyme of carotenoid.Use 3-5 days implants meristematic tissue of nitre sulphur humulone the yellow symptom to occur and cause withered spot thereupon, spread all over whole strain plant behind the fortnight.Use 3-5 days implants meristematic tissue of nitre sulphur humulone the yellow symptom to occur and cause withered spot thereupon, spread all over whole strain plant behind the fortnight.Be used to prevent and kill off annual broadleaf weed and part grassy weed.
The third alkynes Evil humulone (oxadiargyl) is a kind of evil two ketone herbicides for use in paddy of efficient, wide spectrum, chemical name 5-tertiary butyl-3-(2,4-two chloro-5-alkynes propoxyl group) phenyl)-1,3,4 oxadiazole-2-(3H)-ketone, chemical structural formula:
Bing Que Evil humulone is a proporphyrinogen oxidase inhibitor, can effectively prevent and kill off annual gramineous weed and most of broad leaved weed such as barnyard grass grass in the paddy field, speed of action is fast, herbicidal effect is good, kill the grass spectrum as using with to enlarge, and improve its safety paddy rice with sulfonylurea herbicide for paddy field such as bensulfuron-methyl, pyrazosulfurons.
The penoxsuam list is a lot of not enough with existing, and the one, it is wide inadequately to kill the grass spectrum, and it is single that the part weeds can not be prevented and kill off and the sprouting of the weed seed that can not suppress not to be unearthed with having, and the 2nd, single higher with the penoxsuam cost, influence is promoted the use of.For solving the problem that penoxsuam can not suppress seed germination, we are composite with penoxsuam and butachlor, the third careless amine, mefenacet, confection can kill have been sprouted unearthed weeds and can suppress not sprout weed seed again, prolong the lasting period of medicament, a drug can solve the weeds in paddy field problem.Have an advantage that enlarges herbicidal spectrum and penoxsuam and bentazone, nitre sulphur humulone, Bing Que Evil humulone are composite: this mix preparation has remedied the careless defective of killing of single agent separately, complement one another, a drug can be prevented and treated grass family, broad-leaved and the sedge weed in the rice field.All have following advantage through composite preparation simultaneously: 1. wide to rice safety, the scope of application: mix preparation does not all influence the growth of paddy rice, can be in live field, rice seedling bed, seedling throwing field, transplant field use; 2. the activity of weeding height, reduce dosage: its dosage significantly reduces than each single agent dosage behind the composite reagent; 3. kill careless effect stability: this medicament can be owing to problems such as temperature height, soil condition influence activity of weeding, and it is very stable to kill careless effect; 4. improve rice yield:, significantly improve rice yield because of effective controlling weeds and prolongation lasting period.
Summary of the invention the objective of the invention is to the shortcoming at prior art, provides that a kind of herbicidal effect is good, the lasting period is long, security performance is high, dispenser herbicide composition for paddy fields easily.
The technical scheme that realizes the object of the invention is: described herbicidal composition; containing active ingredient is 2-(2; 2-difluoro ethoxy)-N-(5; 8-dimethoxy (1; 2; 4) triazole-(1; 5-C) pyrimidine-2-base)-mixture of 6-trifluoromethyl-benzene sulfanilamide (SN) A and weed killer herbicide B preparation in 1: 1 by weight percentage~1: 99; wherein weed killer herbicide B is selected from N-(fourth oxygen methyl)-a-chloro-2 '; 6 '-diethyl acetanil; 2-chloro-2; 6-diethyl phenyl-N-(the 2-third oxygen ethyl) acetanil; 2-(1; 3-benzothiazole-2-base oxygen base)-the N-exalgine; 3-isopropyl (1H)-benzo-2; 1,3-thiadiazine-4-(3H)-ketone 2,2 dioxide; 2-(4-mesyl-2-nitro-benzoyl) cyclohexane-1; 3-diketone or 5-tertiary butyl-3-(2; 4-two chloro-5-alkynes propoxyl group) phenyl)-1,3, a kind of in 4 oxadiazole-2-(3H)-ketone.
Described herbicidal composition, when weed killer herbicide B is N-(fourth oxygen methyl)-a-chloro-2 ', 6 '-diethyl acetanil or 2-chloro-2, during 6-diethyl phenyl-N-(the 2-third oxygen ethyl) acetanil, the active ingredient percentage by weight is A: B=1: 5~1: 30.
Contain safener in the above-mentioned herbicidal composition, percentage by weight is 2~5: 1.
Described herbicidal composition, when weed killer herbicide B was 2-(1,3-benzothiazole-2-base oxygen base)-N-exalgine, the active ingredient percentage by weight was A: B=1: 6~1: 30.
Described herbicidal composition, when weed killer herbicide B is 3-isopropyl (1H)-benzo-2,1, during 3-thiadiazine-4-(3H)-ketone 2,2 dioxide, the active ingredient percentage by weight is A: B=1: 10~1: 30.
Described herbicidal composition; when weed killer herbicide B is 2-(4-mesyl-2-nitro-benzoyl) cyclohexane-1; 3-diketone or 5-tertiary butyl-3-(2; 4-two chloro-5-alkynes propoxyl group) phenyl)-1; 3; during 4 oxadiazole-2-(3H)-ketone, the active ingredient percentage by weight is A: B=1: 2~1: 40.
Herbicidal composition active ingredient percentage by weight of the present invention is 1%~75%, requirement according to the different dosage form active constituent content, adopt the processing of conventional formulation method, can be mixed with formulations such as suspending agent, granule, wetting powder, water dispersible granules, dry suspending agent, the most preferred dosage form of Herbicidal mixtures of the present invention is suspending agent and water dispersible granules.
Described herbicidal composition, suspending agent are to be dispersion medium with water, and active ingredient mixture, auxiliary agent are made through the wet method ultramicro grinding, can evenly mix dispersion with the water arbitrary proportion, and be easy to use, is difficult for contaminated environment.Auxiliary agent comprises wetting agent, dispersant, thickener, stabilizing agent, antifreezing agent, defoamer, pH regulator agent etc., can add suitable auxiliary agent according to specific requirement.Active constituent content in the suspending agent is 1%~70%, preferred 10%~60%.
Described herbicidal composition, granule are that the active ingredient mixture is dissolved with solvent (thinner), add auxiliary agent, are attached to the particulate vector surface after mixing, and can suitably add dispersant, emulsifier, adsorbent, stabilizing agent etc. as required.Active constituent content in the granule is 1%~70%, preferred 20%~45%.
Described herbicidal composition, wetting powder makes active ingredient mixture and filler, dispersant, wetting agent, adjuvant through pulverizing.Filler comprises kaolin, bentonite, talcum powder, precipitated calcium carbonate, diatomite, potter's clay, white carbon, attapulgite, atlapulgite, gypsum etc.Adjuvant comprises stabilizing agent, bleeding agent, spreader-sticker, foam inhibitor, anticaking agent, synergist.Can add required auxiliary agent as required.Active constituent content is 1%~60% in the wetting powder, preferred 15%~40%.
Described herbicidal composition; water dispersible granules be with auxiliary agents such as active ingredient and filler, wetting agent, dispersant, interleaving agent, disintegrant, stabilizing agent, binding agent after crushed with quantitative water; add in the kneader simultaneously and mediate; make the material of shaping; at last material is sent into Squeezinggranulator; carry out granulation, obtain the water dispersible granules product by dry, screening.Active constituent content is 1%~75% in the water dispersible granules, preferred 10%~45%.
Embodiment
Following instantiation is in order to further describing the present invention, but the present invention absolutely not only only limits to following these embodiment.Percentage all is weight percentage in the prescription, and employed former medicine and auxiliary agent are other producers and buy.Formulation examples is as follows:
Embodiment 1
With the 2kg penoxsuam, the 18kg butachlor, the 6kg alkyl phenol polyethenoxy ether sodium sulfate, the 6kg polyoxyethylene nonylphenol ether, the 3kg epoxidized soybean oil, the 4kg fatty alcohol-polyoxyethylene ether, 1.5kg carboxymethyl cellulose, 2kg ethylene glycol, 0.5kgS-29, the 27kg purified water, join together fully to mix in the reactor and stir, material injection sand mill grinds then, and the material fineness after the grinding reaches 98% by discharging behind 325 mesh standard sieves, material is put in the mixing channel and is mixed, and makes 20% penoxsuam butachlor suspending agent.
Embodiment 2
With the 2kg penoxsuam, the 40kg third careless amine, 5kg neopelex, the 5kg sodium lignin sulfonate, 2.5kg propane diols, 4kgNNO, 0.5kg xanthans, 0.5kgS-29 the 40.5kg purified water joins together fully to mix in the reactor and stirs, material injection sand mill grinds then, material fineness after the grinding reaches 98% by discharging behind 325 mesh standard sieves, and material is put in the mixing channel and mixed, and makes 42% penoxsuam, the third careless amine suspending agent.
Embodiment 3
With the 3kg penoxsuam, the 21kg butachlor, 8kg neopelex, 8kg calcium lignosulfonate, 2.5kg poly-trisiloxanes, 6.5kg AEO-20,15kg white carbon, 18 bentonites, 18kg kaolin joins in the tapered mixer together, material after mixing joined in the airslide disintegrating mill pulverize, fineness reaches 98% by 325 mesh standard sieves, makes 24% penoxsuam butachlor wetting powder.
Embodiment 4
With the 4kg penoxsuam, 4kg nitre sulphur humulone, 6kg alkylphenol polyoxyethylene, 6kg alkylphenol-polyethenoxy phosphate, 4kgJFC, 2kg glycerine, 9kgNNO, 0.6kg xanthans, 0.9kgS-29,63.5kg purified water, join together fully to mix in the reactor and stir, material injection sand mill grinds then, and the material fineness after the grinding reaches 98% by discharging behind 325 mesh standard sieves, material is put in the mixing channel and is mixed, and makes 8% penoxsuam nitre sulphur humulone suspending agent.
Embodiment 5
With the 2.5kg penoxsuam, 7.5kg bentazone, 6kg calcium dodecyl benzene sulfonate, 4kg phenethyl phenol polyethenoxy ether, 5kg ethylene glycol, 9kgNNO, 0.4kg Magnesiumaluminumsilicate, 0.8kgS-29 the 64.8kg purified water joins together fully to mix in the reactor and stirs, material injection sand mill grinds then, material fineness after the grinding reaches 98% by discharging behind 325 mesh standard sieves, and material is put in the mixing channel and mixed, and makes 10% penoxsuam nitre sulphur humulone suspending agent.
Embodiment 6
With the 2kg penoxsuam; the 30kg mefenacet; the 6kg sodium lignin sulfonate; 10kg alkylphenol polyoxyethylene formaldehyde condensation products sodium sulphate; the 3kg carboxymethyl cellulose, 5kg polyoxyethylene nonylphenol ether, 16kg kaolin; the 14kg bentonite; 14kg ammonium sulfate joins in the tapered mixer together, the material after mixing is joined in the airslide disintegrating mill pulverize; fineness reaches 98% by 325 mesh standard sieves; with wetting powder and 20kg purified water, add in the kneader simultaneously and mediate then, make the material of shaping; put this material in Squeezinggranulator granulation at last; product after the granulation carries out drying in 54 ℃ of baking ovens, dried material uses 10 orders and 60 purpose standard screens to sieve; get the middle material of two sieves, make 32% penoxsuam mefenacet water dispersible granules.
Embodiment 7
With the 2kg penoxsuam; the 26kg butachlor; the 8kg sodium lignin sulfonate; 6kg alkylphenol polyoxyethylene formaldehyde condensation products sodium sulphate; the 4kg polyvinyl alcohol, 10kg urea, 8kg white carbon; 18kg kaolin; the 18kg bentonite joins in the tapered mixer together, the material after mixing is joined in the airslide disintegrating mill pulverize; fineness reaches 98% by 325 mesh standard sieves; with wetting powder and 18kg purified water, add in the kneader simultaneously and mediate then, make the material of shaping; put this material in Squeezinggranulator granulation at last; product after the granulation carries out drying in 54 ℃ of baking ovens, dried material uses 10 orders and 60 purpose standard screens to sieve; get the middle material of two sieves, make 28% penoxsuam butachlor water dispersible granules.
Embodiment 8
With the 2kg penoxsuam; 60kg Bing Que Evil humulone; 4kg bay alcohol radical sodium sulphate; the 4kg neopelex; 8kg ammonium sulfate; 11kg kaolin; the 11kg bentonite joins in the tapered mixer together, the material after mixing is joined in the airslide disintegrating mill pulverize; fineness reaches 98% by 325 mesh standard sieves; with wetting powder and 18kg purified water, add in the kneader simultaneously and mediate then, make the material of shaping; put this material in Squeezinggranulator granulation at last; product after the granulation carries out drying in 54 ℃ of baking ovens, dried material uses 10 orders and 60 purpose standard screens to sieve; get the middle material of two sieves, make 62% penoxsuam Bing Que Evil humulone water dispersible granules.
Embodiment 9
With the 2kg penoxsuam, the 48kg mefenacet, 5kg sodium lignin sulfonate, 5kg neopelex, the 2kg polyvinyl alcohol, the 10kg white carbon, 14kg kaolin, 14kg bentonite, join together in the tapered mixer, material after mixing joined in the airslide disintegrating mill pulverize, fineness reaches 98% by 325 mesh standard sieves, makes 50% penoxsuam mefenacet wetting powder.
Embodiment 10
With the 2kg penoxsuam, 8kg Bing Que Evil humulone, 9kg neopelex, 7kg calcium lignosulfonate, 2.5kg polyvinyl alcohol, 6.5kg AEO-20,15kg white carbon, 25kg bentonite, 25kg kaolin joins in the tapered mixer together, material after mixing joined in the airslide disintegrating mill pulverize, fineness reaches 98% by 325 mesh standard sieves, makes 10% penoxsuam Bing Que Evil humulone wetting powder.
Be checking penoxsuam and butachlor, the third careless amine, mefenacet, bentazone, nitre sulphur humulone and the composite effect of the third alkynes Evil humulone, we had carried out field control effectiveness test in 2008, test the embodiment that exemplifies among the present invention of electing as and single agent of each component.
Test Nanchang City, Jiangxi Province in one: 2008 year April, test on Direct-seeding Rice, concrete outcome is as follows:
Table 1 field control effectiveness test result
Test Honghu City, two: 2008 years Hubei in May, on transplanting rice, test, observe herbicidal effect of each prescription and to the safety of paddy rice, concrete result of the test is as follows:
Table 2 field control effectiveness test result
From test one and experiment two can obviously find out, complex preparation has good control efficiency to the rice field common weed, enlarged and killed the grass spectrum, solved the problem that single agent can not prevent and treat multiple weeds simultaneously, and preventive effect significantly increases, and as barnyard grass grass, moleplant seed, Monochoria vaginalis, nutgrass flatsedge etc., the preventive effect of 20d is more than 90% behind the medicine, the preventive effect of 40d still maintains about 90% behind the medicine, realizes that a drug promptly solves the paddy rice whole growth weeds problem in season.