CN103283760A - Rice field weeding composite and preparation thereof - Google Patents
Rice field weeding composite and preparation thereof Download PDFInfo
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Abstract
The invention relates to the field of pesticide preparations, and discloses a rice field weeding composite and a preparation thereof. The weeding composite is prepared from sulphonamide compound pyrimisulfan and a sulfonylurea compound with a ratio weight of 1:10-20:1. According to the rice field weeding composite and the preparation thereof, the sulphonamide compound pyrimisulfan and the sulfonylurea compound are compounded to serve as an active ingredient; the sulphonamide compound pyrimisulfan and the sulfonylurea compound, which complement each other in advantages and synergistically act, can be used for slowing the generation of herbicide resistance of weeds and meanwhile has a synergistic effect on rice field weeding; the use amount and the number of use times of the herbicide are reduced greatly, so that the composite and the preparation thereof have the advantages of safety, high efficiency, environment friendliness and the like and can be widely used for preventing and controlling rice field weeds.
Description
Technical field
The present invention relates to the pesticidal preparations field, relate to a kind of Herbicidal composition for paddy fields and preparation thereof specifically.
Background technology
Paddy rice is the annual gramineae plant, produces each continent that spreads all over except the South Pole, and paddy rice is not only the main cereal crops of China, also is one of world's staple food crop.About 1.45 hundred million hectares of whole world paddy rice cultivated area.China's rice growing area accounts for 1/4 of national cereal crops.No matter cultivated area or output, paddy rice all ranks first in China cereal crops.But the rice field of all rice workspaces of China always has crop smothering in various degree to take place.Wherein, medium crop smothering area accounts for more than 46% of the total cultivated area of paddy rice, and serious crop smothering area is more than 11.5%, and these weeds and paddy rice are at war with in every respect, and paddy rice is worked the mischief, and annual loss grain is more than 200 hundred million kilograms thus.Therefore, domestic rice field is extensive use of weed killer herbicide, avoids paddy rice because of the weeds underproduction.
But, owing to use the change of a certain class weed killer herbicide and wheatland cropping system, the introducing of new varieties at paddy field for a long time, make weed community that obvious variation take place, the paddy field weed bamboo telegraph also constantly spreads, and some weed killer herbicides have been found to have produced resistance, particularly the sulfonyl urea compound weed killer herbicide.And weeds in paddy field fertilities such as broad leaved weed such as angustifolia arrowhead herb, rhizoma alismatis, Monochoria vaginalis, Monochoria korsakowii are strong, and diffusion velocity is fast, and harm is heavy, has become the de novo malignant weed of paddy field in recent years, causes the serious underproduction of paddy rice.In recent years, angustifolia arrowhead herb, rhizoma alismatis, Monochoria vaginalis, Monochoria korsakowii etc. constantly strengthen the anti-drug resistance of sulfonylurea (especially bensulfuron-methyl, pyrazosulfuron) weed killer herbicide, sealing effect to broad leaved weed descends rapidly, and the weed killer herbicide of this sulfonylurea now can not satisfy the needs that paddy field is prevented and kill off broad leaved weed.Therefore need a kind of weed killer herbicide of preventing and treating weeds in paddy field efficiently of research and development, in order to tackle increasingly serious weeds harm.
Summary of the invention
In view of this, the object of the invention provides a kind of Herbicidal composition for paddy fields and preparation thereof, makes Herbicidal composition for paddy fields of the present invention to have synergistic effect to the control of grassy weed, broad leaved weed and sedge weed in the paddy field.
For realizing purpose of the present invention, the present invention adopts following technical scheme:
A kind of Herbicidal combinations, by (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1,1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and sulfonyl urea compound are formed, described (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1,1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and sulfonyl urea compound weight ratio are 1:10-20:1, and described sulfonyl urea compound is grand for ethoxy sulphur, azimsulfuron, uliron is grand, fluorine azoles sulphur is grand, foramsulfuron, tebuthiuron, flucarbazonesodium, AC322140, chlorimuronethyl, triflusulfuronmethyl, penoxsuam, halosulfuronmethyl, the promazine Sulfometuron Methyl, in the ethametsulfuron one or more.
Pyrimisulfan, its chemistry (RS)-2'-[(4 by name, 6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1,1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN).Structural formula is as follows:
Pyrimisulfan is for serving as the novel sulfamido paddy field weed killer herbicide of main exploitation with Japanese combinatorial chemistry company.This agent has broad weed-killing spectrum, to the equal also characteristics such as effective of fool proof, active high, antagonism sulfonylurea herbicide weeds of crop and environment.Pyrimisulfan can prevent and kill off transplanting rice Tanaka's various annual weed and weeds such as needle spikesedge herb, firefly Lin, short arrowhead, Herba Cyperi Glomerati, alisma canaliculatum, pondweed, Chinese celery, wild arrowhead, water chestnut, Japanese Fischer grass, flat bar Fischer grass, the not plump shell grass of rice shape, water silk floss, needle spikesedge herb, firefly Lin, short arrowhead, Herba Cyperi Glomerati and Chinese celery effectively.
The action target of sulfonyl urea compound weed killer herbicide is the acetolactate synthestase (ALS or AHAS) of the synthetic first step reaction of branched-chain amino acid in the catalysis plant corpus, this enzyme is subjected to the inhibition of sulfonyl urea compound, the biosynthesis of branched-chain amino acid is obstructed, to cause synthetic the stopping of protein, make the synthetic destroyed of DNA and the requisite material of other mitosis, cause the growth of plant roots, stem, leaf to be suppressed, thereby the plant growth is badly damaged until death.
As preferably, described (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1,1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and sulfonyl urea compound weight ratio are 1:5-10:1, more preferably 2:1-5:1.
As preferably, described sulfonyl urea compound is for ethoxy sulphur is grand, azimsulfuron or penoxsuam.Further preferably, described (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1, the grand weight ratio of 1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and ethoxy sulphur is 5:1-10:1; Described (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1, the weight ratio of 1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and azimsulfuron is 3:1-7:1; Described (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1, the weight ratio of 1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and penoxsuam is 1:1-6:1.
Different herbicidal activity components mix each active component of back because the difference of composition, structure, physicochemical property makes that the synergy between each active component is typically expressed as synergistic effect, summation action or antagonism.So-called synergistic effect is exactly the mutual synergism between different material, and the effect of its generation is greater than the sum total of each composition effect; And being exactly the effect of its generation, summation action equals the sum total of each composition effect; When antagonism referred to that two kinds of materials act on living organism, a kind of material disturbed the effect of another kind of material, or the effect of interfering with an opponent each other, the phenomenon that general effect is descended.
The present invention is according to Sun Yunpei (Sun Y-P) method, calculate co-toxicity coefficient evaluation (RS)-2'-[(4 respectively, 6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1,1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and ethoxy sulphur are grand, azimsulfuron and penoxsuam use effect with, the result is presented at (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1, co-toxicity coefficient showed that all greater than 120 the mixing use of the two has the notable synergistic effect when 1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and sulfonyl urea compound weight ratio were 1:10-20:1.
Therefore, the invention provides the application of described Herbicidal combinations in preparation control rice field grassy weed, sedge weed and broadleaf weed herbicide.
Herbicidal combinations of the present invention can be made into multiple weed killer herbicide formulation, is can accept auxiliary material on the Herbicidal combinations of the present invention of 1%-90% and the pesticidal preparations to form by percentage composition.As preferably, the percentage composition of described Herbicidal combinations is 10%-85%.Auxiliary material of the present invention comprises components such as wetting agent, dispersant, disintegrant, adhesive, thickener, emulsifier, solvent, filler and water.
As preferably, described weed killer herbicide is granule, wetting powder or water dispersible granules.
Granule is through pulverizing the granular preparation that granulation processes by pesticide original medicine, auxiliary agent and carrier.Granule has advantages such as good directionality, no dust from flying, public hazards be little.Prilling process has infusion process, coating method, kneading method, fluidized bed prilling method, spray granulation, rotation comminution granulation etc.
Wetting powder is with pesticide original medicine, inert filler and a certain amount of auxiliary agent, after fully mixing pulverizing, reaches the formulation of certain particle size in proportion.From in shape, with the pulvis indistinction, but owing to added auxiliary agents such as wetting agent, dispersant, can be moistening by water after being added in the water, disperse, form suspension, can spray and use.
Water dispersible granules claims dried flowable, the outstanding property granule of water again, adds certain auxiliary agent and carrier by pesticide original medicine, makes through pulverizing, granulation, drying, screening.After the entry, disintegration automatically is dispersed into suspension.It is the novel form that grows up on the basis of wetting powder and suspending agent, it has good dispersion, good fluidity, suspensibility height, good stability, no dust from flying, characteristics such as easy to use, and production method has mist projection granulating, suspension type granulation, extruder grain, high strength mixing granulation, fluidized bed prilling etc.
Preferably, in granule, the weight percentage of Herbicidal combinations is 10%-72%;
Preferably, in wetting powder, the weight percentage of Herbicidal combinations is 20%-80%;
Preferably, in water dispersible granules, the weight percentage of Herbicidal combinations is 15%-85%.
Preferably prepare in the technical scheme of granule, wetting powder or water dispersible granules in the present invention, described auxiliary material comprises wetting agent, dispersant, disintegrant, filler components such as (carriers).
Wherein, as preferably, wetting agent of the present invention is selected from alkyl sulfate, alkylbenzenesulfonate, alkylsulfonate, alkylnaphthalene sulfonate, draws back powder, moistening penetrant t, sorbitan fatty acid ester APEO, Fluhyzon formaldehyde condensation products.
Dispersant of the present invention can be selected from lignosulfonates, Sodium Polyacrylate, di-2-ethylhexylphosphine oxide naphthalene sulfonate, alkyl amine group taurate, polycarboxylate, sodium methylene bis-naphthalene sulfonate formaldehyde condensation products, carboxymethyl cellulose, sodium phosphate trimer, alkylnaphthalene sulfonate condensation polymer.
Disintegrant of the present invention is selected from urea, sodium carboxymethylcellulose, ammonium sulfate, sodium sulphate, silica gel, bentonite, PEG, SF-04, SHX.
Filler of the present invention is selected from kaolin, bentonite, potter's clay, diatomite, white carbon, precipitated calcium carbonate, attapulgite.
Weed killer herbicide field control effectiveness test result of the present invention shows, being lower than under two prerequisites of singly using dose, significantly improved preventive effect.This shows that Herbicidal composition for paddy fields provided by the invention and preparation thereof have significantly reduced dosage and medication number of times, have advantages such as safety, efficient, environmental protection, and delayed the drug-fast generation of weeds.
By above technical scheme as can be known, Herbicidal combinations of the present invention and preparation thereof are with (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1,1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and sulfonyl urea compound are composite as active ingredient, the two mutual supplement with each other's advantages, synergy, delay the drug-fast generation of weeds, simultaneously weeds in paddy field had synergistic effect, dosage and medication number of times have been significantly reduced, have advantages such as safety, efficient, environmental protection, can be widely used in the control of rice field crop smothering.
Embodiment
The embodiment of the invention discloses a kind of Herbicidal composition for paddy fields and preparation thereof.Those skilled in the art can use for reference this paper content, suitably improve technological parameter and realize.Special needs to be pointed out is that all similarly replace and change apparent to those skilled in the art, they all are regarded as being included in the present invention.Product of the present invention and method are described by preferred embodiment, and the related personnel obviously can change or suitably change and combination product as herein described in not breaking away from content of the present invention, spirit and scope, realizes and use the technology of the present invention.
Weed killer herbicide of the present invention has the wideer grass that kills to compose, comprise grassy weed, sedge weed and broad leaved weed, as barnyard grass grass, nutgrass flatsedge, difformed galingale herb, buttercup, moleplant seed, annual bluegrass, lady's-grass, green foxtail, nutgrass flatsedge, Monochoria korsakowii, angustifolia arrowhead herb, water chestnut, pondweed, knotweed, mexicana, beggar-ticks, chickweed, rhizoma alismatis, needle spikesedge herb, Chinese celery, Japanese Fischer grass, flat bar Fischer grass, Procumbent Falsepimpernel, eleusine indica, broad-leaved arm shape grass.Asiatic plantain, three-coloured amaranth, piemarker, black nightshade have good preventive effect.Herbicidal combinations of the present invention can be used for the growth that annual and perennial noxious plant are resisted in the rice field, has the very wide grass that kills to compose, and can prevent and kill off grassy weed, sedge weed, the broad leaved weed of paddy field.Weeds such as sedge family Herba Cyperi Glomerati, difformed galingale herb, cyperus iria, miliary fimbristylis herb, the rhizome of nutgrass flatsedge, kyllinga brevifolia, fescue, firefly Lin, flat stalk Fischer grass, Japanese Fischer grass.This weed killer herbicide also can be prevented and kill off direct seading rice Tanaka's weeds such as short arrowhead, moleplant seed, barnyard grass grass, Monochoria korsakowii, mexicana, rhizoma alismatis, chickweed, knotweed and Chinese celery.
When each active component of the present invention is used jointly, there is superior super addition.The activity of bond is higher than the expection summation of each herbicidal activity of using.Synergy can reduce utilization rate, prevent and treat more broad leaved weed, grassy weed and the sedge of wide range, the herbicide effect onset is faster, the duration is longer,, and using phase of can widening better to the control of noxious plant by only once or several times using.Above-mentioned character and advantage be for putting into practice control of weeds keeping there is not undesired competitive plant in the rice field, thereby guarantee that from quality and quantity angle the rice yield level is necessary.With regard to described character, these new Herbicidal combinations have exceeded the state of the art of this area significantly.
Further set forth the present invention below in conjunction with embodiment.
Embodiment 1:10%Pyrimisulfan ethoxy sulphur swells granule
Pyrimisulfan1 part, grand 9 parts of ethoxy sulphur, 3 parts of neopelexes, 6 parts of sodium lignin sulfonates, 81 parts of kaolin.
Above-mentioned each active ingredient and raw material are fully mixed, then granulation, drying, the acquisition granule sieves.
Embodiment 2:30%Pyrimisulfan ethoxy sulphur swells granule
Pyrimisulfan20 part, grand 10 parts of ethoxy sulphur, 2 parts of moistening penetrant ts, 5 parts of calcium lignosulfonates, 63 parts in diatomite.
Above-mentioned each active ingredient and raw material are fully mixed, then granulation, drying, the acquisition granule sieves.
Embodiment 3:70%Pyrimisulfan ethoxy sulphur swells granule
18 parts of grand 30 parts of Pyrimisulfan40 part, ethoxy sulphur, 4 parts of Nekal BXs, NNO8 part, white carbons.
Above-mentioned each active ingredient and raw material are fully mixed, then granulation, drying, the acquisition granule sieves.
Embodiment 4:12%Pyrimisulfan azimsulfuron granule
Pyrimisulfan2 part, 10 parts of azimsulfurons, K123 part, 5 parts of sodium phosphate trimers, 80 parts of kaolin.
Above-mentioned each active ingredient and raw material are fully mixed, then granulation, drying, the acquisition granule sieves.
Embodiment 5:33%Pyrimisulfan azimsulfuron granule
Pyrimisulfan3 part, 30 parts of azimsulfurons, 5 parts of neopelexes, 9 parts of carboxymethyl celluloses, 53 parts of kaolin.
Above-mentioned each active ingredient and raw material are fully mixed, then granulation, drying, the acquisition granule sieves.
Embodiment 6:63%Pyrimisulfan azimsulfuron granule
Pyrimisulfan54 part, 9 parts of azimsulfurons, 3 parts of penetrating agent JFCs, 7 parts of Sodium Polyacrylates, 27 parts of precipitated calcium carbonates.
Above-mentioned each active ingredient and raw material are fully mixed, then granulation, drying, the acquisition granule sieves.
Embodiment 7:15%Pyrimisulfan penoxsuam granule
Pyrimisulfan10 part, 5 parts of penoxsuams, 5 parts of neopelexes, 10 parts of sodium lignin sulfonates, 70 parts of attapulgites.
Above-mentioned each active ingredient and raw material are fully mixed, then granulation, drying, the acquisition granule sieves.
Embodiment 8:43%Pyrimisulfan penoxsuam granule
Pyrimisulfan30 part, 13 parts of penoxsuams, 3 parts of moistening penetrant ts, 6 parts of sodium lignin sulfonates, 48 parts in diatomite.
Above-mentioned each active ingredient and raw material are fully mixed, then granulation, drying, the acquisition granule sieves.
Embodiment 9:72%Pyrimisulfan penoxsuam granule
Pyrimisulfan60 part, 12 parts of penoxsuams, 4 parts of neopelexes, 8 parts of carboxymethyl celluloses, 16 parts of kaolin.
Above-mentioned each active ingredient and raw material are fully mixed, then granulation, drying, the acquisition granule sieves.
Embodiment 10:21%Pyrimisulfan ethoxy sulphur swells wetting powder
Pyrimisulfan20 part, grand 1 part of ethoxy sulphur, 3 parts of moistening penetrant ts, 7 parts of calcium lignosulfonates, 69 parts of precipitated calcium carbonates.
With above-mentioned each active ingredient with raw material fully mixes, air-flow is pulverized and namely to be obtained wetting powder.
Embodiment 11:40%Pyrimisulfan ethoxy sulphur swells wetting powder
Pyrimisulfan30 part, grand 10 parts of ethoxy sulphur, K123 part, 6 parts of carboxymethyl celluloses, 51 parts of kaolin.
With above-mentioned each active ingredient with raw material fully mixes, air-flow is pulverized and namely to be obtained wetting powder.
Embodiment 12:80%Pyrimisulfan ethoxy sulphur swells wetting powder
Pyrimisulfan70 part, grand 10 parts of ethoxy sulphur, 4 parts of moistening penetrant ts, 8 parts of Sodium Polyacrylates, 8 parts in diatomite.
With above-mentioned each active ingredient with raw material fully mixes, air-flow is pulverized and namely to be obtained wetting powder.
Embodiment 13:23%Pyrimisulfan azimsulfuron wetting powder
62 parts of Pyrimisulfan20 parts, 3 parts of azimsulfurons, 5 parts of polysorbate60s, PVA10 part, white carbon.
With above-mentioned each active ingredient with raw material fully mixes, air-flow is pulverized and namely to be obtained wetting powder.
Embodiment 14:42%Pyrimisulfan azimsulfuron wetting powder
47 parts of Pyrimisulfan40 parts, 2 parts of azimsulfurons, SOPA4 part, NNO7 part, bentonite.
With above-mentioned each active ingredient with raw material fully mixes, air-flow is pulverized and namely to be obtained wetting powder.
Embodiment 15:76%Pyrimisulfan azimsulfuron wetting powder
15 parts of Pyrimisulfan60 parts, 16 parts of azimsulfurons, 3 parts of neopelexes, MF6 part, precipitated calcium carbonate.
With above-mentioned each active ingredient with raw material fully mixes, air-flow is pulverized and namely to be obtained wetting powder.
Embodiment 16:22%Pyrimisulfan penoxsuam wetting powder
68 parts of Pyrimisulfan2 parts, 20 parts of penoxsuams, 3 parts of lauryl sodium sulfate, NO7 part, kaolin.
With above-mentioned each active ingredient with raw material fully mixes, air-flow is pulverized and namely to be obtained wetting powder.
Embodiment 17:36%Pyrimisulfan penoxsuam wetting powder
Pyrimisulfan30 part, 6 parts of penoxsuams, 5 parts of moistening penetrant ts, 10 parts of sodium carboxymethylcelluloses, 49 parts of precipitated calcium carbonates.
With above-mentioned each active ingredient with raw material fully mixes, air-flow is pulverized and namely to be obtained wetting powder.
Embodiment 18:47%Pyrimisulfan penoxsuam wetting powder
Pyrimisulfan40 part, 7 parts of penoxsuams, 3 parts of Nekal BXs, 7 parts of sodium lignin sulfonates, 43 parts of kaolin.
With above-mentioned each active ingredient with raw material fully mixes, air-flow is pulverized and namely to be obtained wetting powder
Embodiment 19:15%Pyrimisulfan ethoxy sulphur precititation dispersible granule
Pyrimisulfan5 part, grand 10 parts of ethoxy sulphur, 3 parts of Nekal BXs, 6 parts of Dispersant MFs, 1 part in urea, 75 parts of white carbons.
Above-mentioned each active ingredient and raw material are fully mixed, pulverized, kneading, granulation, dry, screening namely obtains water dispersible granules.
Embodiment 20:45%Pyrimisulfan ethoxy sulphur precititation dispersible granule
49 parts of grand 15 parts of Pyrimisulfan30 part, ethoxy sulphur, Morwet D-4252 part, Morwet EFW4 part, kaolin.
Above-mentioned each active ingredient and raw material are fully mixed, pulverized, kneading, granulation, dry, screening namely obtains water dispersible granules.
Embodiment 21:75%Pyrimisulfan ethoxy sulphur precititation dispersible granule
16 parts of grand 20 parts of Pyrimisulfan55 part, ethoxy sulphur, SP-28363 part, SP-2845W6 part, precipitated calcium carbonates.
Above-mentioned each active ingredient and raw material are fully mixed, pulverized, kneading, granulation, dry, screening namely obtains water dispersible granules.
Embodiment 22:20%Pyrimisulfan azimsulfuron water dispersible granules
Pyrimisulfan15 part, 5 parts of azimsulfurons, 5 parts of Nekal BXs, 8 parts of sodium lignin sulfonates, 1 part in urea, 66 parts of white carbons.
Above-mentioned each active ingredient and raw material are fully mixed, pulverized, kneading, granulation, dry, screening namely obtains water dispersible granules.
Embodiment 23:54%Pyrimisulfan azimsulfuron water dispersible granules
Pyrimisulfan44 part, 10 parts of azimsulfurons, 3 parts of lauryl sodium sulfate, 6 parts of carboxymethyl celluloses, 2 parts in ammonium sulfate, 35 parts of precipitated calcium carbonates.
Above-mentioned each active ingredient and raw material are fully mixed, pulverized, kneading, granulation, dry, screening namely obtains water dispersible granules.
Embodiment 24:85%Pyrimisulfan azimsulfuron water dispersible granules
2 parts of Pyrimisulfan75 parts, 10 parts of azimsulfurons, 4 parts of penetrating agent JFCs, 8 parts of sodium lignin sulfonates, PEG1 part, kaolin.
Above-mentioned each active ingredient and raw material are fully mixed, pulverized, kneading, granulation, dry, screening namely obtains water dispersible granules.
Embodiment 25:25%Pyrimisulfan penoxsuam water dispersible granules
Pyrimisulfan20 part, 5 parts of penoxsuams, 4 parts of lauryl sodium sulfate, 9 parts of calcium lignosulfonates, 1 part in urea, 61 parts of bentonites.
Above-mentioned each active ingredient and raw material are fully mixed, pulverized, kneading, granulation, dry, screening namely obtains water dispersible granules.
Embodiment 26:53%Pyrimisulfan penoxsuam water dispersible granules
Pyrimisulfan50 part, 3 parts of penoxsuams, SOPA4 part, 7 parts of sodium phosphate trimers, 1 part in urea, 35 parts of kaolin.
Above-mentioned each active ingredient and raw material are fully mixed, pulverized, kneading, granulation, dry, screening namely obtains water dispersible granules.
Embodiment 27:84%Pyrimisulfan penoxsuam water dispersible granules
8 parts of Pyrimisulfan80 parts, 4 parts of penoxsuams, 2 parts of neopelexes, 5 parts of Sodium Polyacrylates, PDG1 part, kaolin.
Above-mentioned each active ingredient and raw material are fully mixed, pulverized, kneading, granulation, dry, screening namely obtains water dispersible granules.
Embodiment 28: the Toxicity Determination test
Be mixed to the synergy of weeds in order further to understand Pyrimisulfan and sulfonyl urea compound, carry out following test being mixed of Pyrimisulfan and sulfonylurea herbicide carried out the prescription screening,, azimsulfuron grand with ethoxy sulphur, penoxsuam are example, the prescription screening.
Test method: according to the purpose that is mixed serial proportioning is set, each proportioning arranges 5-7 concentration gradient.It is standby that weeds are cultured to the 2-3 leaf phase.After the weeds cauline leaf processing with the number of finishing, calculate preventive effect, calculate concentration EC in the inhibition with method of least squares then
50(95% confidence interval) calculates co-toxicity coefficient (CTC) with the abundant method of Sun Yun again.
Actual measurement toxicity index (ATI)=(standard medicament EC50/ reagent agent EC50) * 100
Theoretical toxicity index (TTI)=(percentage composition of A in toxicity index * mixture of A)+(percentage composition of B in toxicity index * mixture of B)
Co-toxicity coefficient (CTC)=[mixture actual measurement virulence coefficient (the ATI)/theoretical virulence coefficient (TTI) of mixture] * 100
Co-toxicity coefficient (CTC) 〉=120 shows as synergistic effect; Co-toxicity coefficient (CTC)≤80 shows as antagonism; 80＜co-toxicity coefficient (CTC)＜120 shows as summation action.
Testing result sees Table 1, table 2 and table 3.
The grand synergy to grassy weed, sedge weed and broad leaved weed of table 1Pyrimisulfan and ethoxy sulphur is measured
Table 2Pyrimisulfan and azimsulfuron are measured the synergy of grassy weed, sedge weed and broad leaved weed
Table 3Pyrimisulfan and penoxsuam are measured the synergy of grassy weed, sedge weed and broad leaved weed
By the measurement result of table 1, table 2 and table 3 as can be known, as Pyrimisulfan and ethoxy sulphur is grand, azimsulfuron, when the penoxsuam weight ratio is 1:10-20:1, co-toxicity coefficient has obvious synergistic effect all greater than 120.
Embodiment 29: field control effectiveness test
The product that makes with each single agent 10%Pyrimisulfan wetting powder, 15% ethoxy sulphur precititation dispersible granule, 50% azimsulfuron water dispersible granules, 25g/L penoxsuam oil-suspending agent and the embodiment of the invention 21, embodiment 23, embodiment 25 is sprayed to stems and leaves of rice and is handled respectively, 20d statistics is to the preventive effect of weeds behind the medicine, the results are shown in Table 4, table 5 and table 6.
Table 4 weed killer herbicide of the present invention and single agent weed killer herbicide preventive effect contrast (%)
Table 5 weed killer herbicide of the present invention and single agent weed killer herbicide preventive effect contrast (%)
Table 6 weed killer herbicide of the present invention and single agent weed killer herbicide preventive effect contrast (%)
By the field control effectiveness test of table 4, table 5 and table 6 as can be known, under the prerequisite of each effective ingredient consumption of weed killer herbicide of the present invention less than single amount of application, preventive effect and the integrated control effect of grassy weed with, sedge weed and broad leaved weed significantly improved, this is consistent with the Toxicity Determination result of the test, has obvious synergistic effect.
The explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (9)
1. Herbicidal composition for paddy fields, it is characterized in that, by (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1,1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and sulfonyl urea compound are formed, described (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1,1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and sulfonyl urea compound weight ratio are 1:10-20:1, and described sulfonyl urea compound is grand for ethoxy sulphur, azimsulfuron, uliron is grand, fluorine azoles sulphur is grand, foramsulfuron, tebuthiuron, flucarbazonesodium, AC322140, chlorimuronethyl, triflusulfuronmethyl, penoxsuam, halosulfuronmethyl, the promazine Sulfometuron Methyl, in the ethametsulfuron one or more.
2. according to the described Herbicidal combinations of claim 1, it is characterized in that, described (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1,1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and sulfonyl urea compound weight ratio are 1:5-10:1.
3. according to the described Herbicidal combinations of claim 1, it is characterized in that described sulfonyl urea compound is grand for ethoxy sulphur, azimsulfuron or penoxsuam.
4. according to the described Herbicidal combinations of claim 3, it is characterized in that described (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1, the grand weight ratio of 1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and ethoxy sulphur is 5:1-10:1.
5. according to the described Herbicidal combinations of claim 3, it is characterized in that described (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1, the weight ratio of 1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and azimsulfuron is 3:1-7:1.
6. according to the described Herbicidal combinations of claim 3, it is characterized in that described (RS)-2'-[(4,6-dimethoxypyridin-2-yl) (hydroxyl) methyl]-1, the weight ratio of 1-two fluoro-6'-(methoxy) methane benzene sulfanilamide (SN) and penoxsuam is 1:1-6:1.
7. the application of any described Herbicidal combinations of claim 1-6 in preparation control rice field grassy weed, sedge weed and broadleaf weed herbicide.
8. a weed killer herbicide is characterized in that, is can accept auxiliary material on any described Herbicidal combinations of claim 1-6 of 1%-90% and the pesticidal preparations to form by weight percentage.
9. described weed killer herbicide according to Claim 8 is characterized in that described weed killer herbicide is granule, wetting powder or water dispersible granules.
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| CN104304297A (en) * | 2014-10-26 | 2015-01-28 | 山东滨农科技有限公司 | Weeding composition containing metamifop |
| CN104542667A (en) * | 2014-12-26 | 2015-04-29 | 北京燕化永乐生物科技股份有限公司 | Herbicidal composition |
| WO2016017547A1 (en) * | 2014-07-30 | 2016-02-04 | 日産化学工業株式会社 | Solid agrochemical composition |
| CN105409993A (en) * | 2015-11-05 | 2016-03-23 | 北京燕化永乐生物科技股份有限公司 | Weeding composition |
| CN106922717A (en) * | 2017-03-08 | 2017-07-07 | 南京华洲药业有限公司 | A kind of Herbicidal combinations of Sulfometuron Methyl containing promazine with ethoxysulfuron and its application |
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| CN105284848B (en) * | 2014-07-24 | 2017-06-20 | 江苏龙灯化学有限公司 | A kind of Herbicidal combinations |
| GB2534230B (en) * | 2015-01-19 | 2019-06-12 | Rotam Agrochem Int Co Ltd | A herbicidal composition and method of controlling plant growth |
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| CN106922717A (en) * | 2017-03-08 | 2017-07-07 | 南京华洲药业有限公司 | A kind of Herbicidal combinations of Sulfometuron Methyl containing promazine with ethoxysulfuron and its application |
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