CN105557704A - Paddy rice field weeding composition - Google Patents
Paddy rice field weeding composition Download PDFInfo
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Abstract
The present invention relates to a paddy rice field weeding composition, which comprises the following active components such as (a) mesotrione and (b) simetryn. The paddy rice field weeding composition of the present invention has the following characteristics that 1, the paddy rice field weeding composition is specially used for prevention and removing of paddy rice field annual and perennial broadleaf weeds, wherein the excessive use of the pesticides can be avoided through the targeted broadleaf weed prevention and removing; 2, with the two used active components, the use amount of the simetryn can be reduced, the insecurity of the use of the simetryne in the paddy rice field can be eliminated, and the synergetic effect exists between two active components so as to reduce the drug resistance of the broadleaf weeds in the paddy rice field and provide the good weeding effect; and 3, the paddy rice field weeding composition has characteristics of less consumption, low use cost, no residue on paddy rice, no influence on the environment, and complete green environmental protection idea presenting, such that the weeding composition of the present invention has broad market prospects.
Description
Technical field
The present invention relates to a kind of herbicidal composition containing mesotrione and symetryne, be specifically related to a kind of weed killer herbicide being exclusively used in control rice field broad leaved weed, it is the herbicidal composition that active component forms by mesotrione and symetryne.
Background technology
It is carry out paddy field to close weeding that large area paddy field weed prevents and treats method the most economic, closes weeding success, can save a large amount of human and material resources, financial resources.Peasant uses a kind of weed killer herbicide for a long time continuously, causes paddy land weed kind also more single, and defines malignant weed.The weed killer herbicide function ratio of the keeping from ill weeds circulated on the market is now comparatively comprehensive, and herbicide spectrum is wider.There is more barnyard grass inside such as paddy field, only the weed killer herbicide killed specially except barnyard grass need be used just can to deal with problems, the weed killer herbicide preventing and kill off broad-leaved need not be used; If broad leaved weed is many in paddy field, is used alone the weed killer herbicide preventing and kill off broad-leaved and just can deals with problems, need not use and prevent and kill off weeds gramineous.And more be on the market the medicament of single medicament and the wealthy double play of standing grain, single medicament is owing to using continuously for many years, and weeds produce resistance already, and herbicidal effect is undesirable; The medicament of the wealthy double play of standing grain can cause repeated drug taking, overmedicate, has not only improved drug cost but also contaminated environment.My company is through investigation over the years, difficulty anti-malignant weed in paddy field is in the majority with wild arrowhead, rhizoma alismatis, Monochoria korsakowii, especially in West Part of Heilongjiang Province area, occurring area is large, peasant is sprayed foliar herbicide solved by shoulder back of the body sprayer, and shortcoming is that the manpower of at substantial, dosage are larger, because work rate is lower when land area is more, easily miss the best weeding time, herbicidal effect is undesirable.Therefore the product releasing a pointed Herbicidal combinations is needed.The present invention is aly exclusively used in the Herbicidal combinations preventing and kill off the malignant weeds such as wild arrowhead, rhizoma alismatis, Monochoria korsakowii.
Retrieved by pertinent literature, publication number is that CN103918690A Chinese invention patent application discloses a kind of Herbicidal composition for rice field, this complex weedicide is by mefenacet and mesotrione, and form with one or more in bensulfuron-methyl, pyrazosulfuron, symetryne are composite, assortedly to draw for preventing and kill off paddy field grass family, broad leaved weed, sedge weed.This invention herbicide spectrum is wider, and the paddy field that more and malignant weed takes place frequently for weeds species survey is ideal.And during for broad leaved weed occurs separately, because its mefenacet contained is mainly used in preventing and kill off grassy weed, waste medication can be caused, increase drug cost.
The English common name bensulfuron-methyl of mesotrione; molecular formula C14H13NO7S; chemical name 2-(4-mesyl)-2-nitrobenzene formyl) cyclohexane-1; 3-diketone; for trione compounds; be one can suppress medical midbodies of para (ortho)-hydroxybenzoic acetone acid esters dual oxide enzyme (HPPD) bud before and wide spectrum selective herbicide after seedling, toxicity is low.Mesotrione easily in plant xylem and phloem conduction, has action of contace poison and wholesomeness, effectively can prevent and treat main broadleaved herb and some grassy weeds.From China's agriculture chemical registration service condition, the crop that main registration uses is corn.
Symetryne, chemical name is 2,4-bis-ethylamino-6-methyl mercapto-1,3,5-tri-pyridine.Molecular formula: C
8h
15n
5s.Selectivity, inner sucting conduction type s-triazine weed killer herbicide.Be applicable to rice field and prevent and kill off the weeds such as barnyard grass, fescue, pondweed, rhizoma alismatis, angustifolia arrowhead herb, Brittle Falsepimpernel Herb, S. potamogetifolia, harsh to temperature requirement during dispenser.Symetryne consumption is 500 grams/ha time, and preventive effect is ideal, and preventive effect is about 80%, but now more serious to rice drug misadventuring.And consumption is 250 grams/ha time, preventive effect is poor, preventive effect about 30%, but to rice safety.
The present invention is by symetryne under the condition of safety using amount, uses with, make preventive effect reach about 90% with mesotrione.
Mesotrione is post-emergence herbicide before bud, and mesotrione suppresses p-hydroxyphenypyruvate dioxydenase (HPPD), affects herxheimer-liked reaction, has good preventive effect to broad leaved weed and sedge weed.Symetryne is selectivity, inner sucting conduction type s-triazine weed killer herbicide.Absorb by weeds root, leaf, and be transmitted to plant whole body, suppress weeds photosynthesis, blade minus green is turned yellow and dead.Two kinds of pharmacy effect mechanism and control spectrum emphasis have larger difference.
Mesotrione and symetryne are carried out rational mixture, finds that preventive effect has obvious addition, improve broad leaved weed control efficiency, eliminate the unsafe factor of symetryne.Paddy field broad leaved weed is prevented and kill off in a dispenser, reduces formulation rate, reduces cost accounting, to rice safety.
Summary of the invention
The object of the present invention is to provide a kind of component reasonable, paddy field weeding has obviously synergistic effect, can high-efficiency prevention and control broad leaved weed targetedly, and consumption is few, easy to use, residual few on rice crop, environmental protection, a kind of herbicide composition for paddy fields not easily developed immunity to drugs.
Present invention employs following technical scheme:
A kind of Herbicidal composition for rice field, wherein: said composition is containing active principle:
(a) mesotrione;
(b) symetryne;
The weight ratio of active principle (a) and (b) is 1 ~ 80:1 ~ 80.
In order to prevent and treat the paddy field broad leaved weed in agricultural production, inventor has carried out Toxicity Determination research with mesotrione and symetryne, concrete grammar is that indoor pot method carries out cauline leaf process, and test is with reference to " farm-chemical indoor determination test rule weed killer herbicide the 9th part ".
1 reagent agent
The former medicine of 95% mesotrione; The former medicine of 95% symetryne.
2 for examination weeds
Rhizoma alismatis Alismaplantago-aquaticaLinn. (broad leaved weed)
Angustifolia arrowhead herb Sagittariatrifolia (broad leaved weed)
Monochoria korsakowii Monochoriakorsakowii (broad leaved weed)
3 mesotriones, symetryne, test Treatment Design
(1) mesotrione 40ga.i./ha
(2) mesotrione 75ga.i./ha
(3) symetryne 125ga.i./ha
(4) symetryne 250ga.i./ha
(5) mesotrione 40ga.i./ha+ symetryne 125ga.i./ha
(6) mesotrione 75ga.i./ha+ symetryne 125ga.i./ha
(7) mesotrione 40ga.i./ha+ symetryne 250ga.i./ha
(8) mesotrione 75ga.i./ha+ symetryne 250ga.i./ha
4 test methods
4.1 medicament preparations
Take appropriate symetryne and the former medicine of mesotrione respectively, be dissolved in a small amount of acetone, be mixed with medicament mother liquor respectively.On the basis of preliminary experiment, medicament is diluted to 3 required dosages with the 0.1% Tween 80 aqueous solution for subsequent use.
4.2 chemicals treatment
Soil spraying is carried out after sowing 24h.1cm ~ 2cm water layer is kept after medicine.Move in controlled greenhouse by solar heat and cultivate, temperature 15 ~ 32 DEG C, L/D=11/13h, illumination 10200 ~ 22500LX, humidity 70 ~ 90%.Often process arranges 4 repetitions, each repetition 5 basins, does not contain medicament below, is treated to blank containing corresponding acetone and the 0.1% Tween 80 aqueous solution.
4.3 investigation method
21d after three chemicals treatment, adopts absolute value (number survey) investigation method investigation records activity of weeding, takes each process weeds acrial part fresh, calculates fresh weight preventive effect, and according to Colby method evaluation synergy type.
Data statistics and analysis
5.1computational methods
According to survey data, calculate the fresh weight preventive effect of each process by formula (1), unit is percentage (%), and result of calculation retains 2 significant digits.
E=×100………………(1)
In formula: E---fresh weight preventive effect
C----contrasts weeds acrial part fresh weight
T---process weeds acrial part fresh weight
5.2statistical analysis
The theoretical fresh weight preventive effect of each proportioning mixture is calculated by Gowing method, then compared with actual preventive effect (E), the mixed synergy type to weeds of both evaluations. the theoretical fresh weight preventive effect of mixe herbicide is pressed formula (2) and is calculated:
Wherein: fresh weight preventive effect when X-weed killer herbicide 1 consumption is P;
Fresh weight preventive effect when Y-weed killer herbicide 2 consumption is Q;
E
0theoretical preventive effect when theoretical preventive effect+weed killer herbicide 2 consumption when-weed killer herbicide 1 consumption is P is Q;
E---amount of herbicide 1 and 2 presses actual preventive effect during different ratio mixture.
E-E
0> 10% is synergistic effect, E-E
0<-10% is antagonism; E-E
0be worth between theoretical value ± 10% be addition.
6. result
Can find out from table 1 ~ 3, mesotrione and symetryne 4 different ratio mixtures are to the E-E of angustifolia arrowhead herb, rhizoma alismatis and Monochoria korsakowii
0value is respectively-9.41 ~ 8.10% ,-3.06 ~ 5.99% and 0.34 ~ 6.66%, E-E
0value, all between ± 10%, shows that the synergy to angustifolia arrowhead herb, Monochoria vaginalis and Monochoria korsakowii of mesotrione and symetryne belongs to addition.Therefore, it is feasible for two kinds of medicament mixtures being prevented and treated transplanting rice field annual weed.When 75:250(and 3:10 pressed by mesotrione and symetryne) mixture time, E-E
0be worth maximum, be respectively 8.10%, 5.99% and 6.66% to angustifolia arrowhead herb, rhizoma alismatis and Monochoria korsakowii, addition is the most obvious, can act as the optimum proportioning of two kinds of medicament mixtures control transplanting rice field grassy weeds, broad leaved weed and sedge weed.
Table 1 symetryne and mesotrione mixture measure the synergy of angustifolia arrowhead herb
Table 2 symetryne and mesotrione mixture measure the synergy of rhizoma alismatis
Table 3 symetryne and mesotrione mixture measure the synergy of Monochoria korsakowii
According to method known in those skilled in the art, add different auxiliary agents during the practical application of a kind of Herbicidal composition for rice field of the present invention and can be mixed with different formulations.Auxiliary agent is 10 ~ 99% of gross weight.
At least containing a kind of surfactant in auxiliary agent, surfactant is any one or multiple combination in alkyl sulfate, alkylbenzenesulfonate, fatty alcohol polyoxyethylene ether sulfate, alkylphenol polyoxyethylene, styryl phenol polyethenoxy ether, alkylphenol polyoxyethylene formaldehyde condensation products, castor oil polyoxyethylene ether, fatty alcohol-polyoxyethylene ether, aliphatic alcohol polyethenoxy ester, polyol fatty acid ester and ethylene oxide adduct thereof, and described amount of surfactant accounts for 5 ~ 20% of gross weight.
Also containing cosolvent, solvent in missible oil formulation adjuvants.Described cosolvent is any one or multiple combination in cyclohexanone, acetone, halogenated hydrocarbons, low-molecular-weight amide-type, methyl alcohol, dimethyl sulfoxide (DMSO), and described cosolvent accounts for 5 ~ 20% of gross weight; Described solvent is one or more combinations in dimethylbenzene, toluene, solvent naphtha, and described solvent accounts for 15 ~ 85% of gross weight.
Also containing any one in bentonite, white carbon, Fatty acid methyl ester, soybean salad oil or multiple combination in oil-suspending agent type auxiliary agent, its weight accounts for 10 ~ 85% of gross weight.
Auxiliary agent also containing wetting powder in wettable powder formulation auxiliary agent and dispersant, the auxiliary agent of described wetting powder is any one or multiple combination in kaolin, bentonite, potter's clay, diatomite, white carbon, precipitated calcium carbonate, and the auxiliary agent of described wetting powder accounts for 1 ~ 70% of gross weight; Described dispersant is any one or multiple combination in naphthalenesulfonate formaldehyde condensation compound, anion naphthalene sulfonate, lignosulfonates, carboxymethyl cellulose, alkylbenzenesulfonate, fatty alcohol sulfonate, alkylphenol polyoxyethylene, polyethers, polyacrylic acid, polystyrene and copolymer-maleic anhydride, and described dispersant accounts for 5 ~ 20% of gross weight.
Auxiliary agent containing water-dispersible granules in type water dispersable granules auxiliary agent and dispersant, the auxiliary agent of described water dispersible granules is one or more combinations in kaolin, bentonite, potter's clay, diatomite, white carbon, precipitated calcium carbonate, and the auxiliary agent of described water dispersible granules accounts for 1 ~ 70% of gross weight; Described dispersant is any one or multiple combination in naphthalenesulfonate formaldehyde condensation compound, anion naphthalene sulfonate, lignosulfonates, carboxymethyl cellulose, alkylbenzenesulfonate, fatty alcohol sulfonate, soluble starch, lauryl sodium sulfate, alkylphenol polyoxyethylene, and described dispersant accounts for 5 ~ 20% of gross weight.
Auxiliary agent containing microcapsule suspending agent in microcapsule suspending agent formulation adjuvants and dispersant, the auxiliary agent of described microcapsule suspending agent is macromolecule cyst material, emulsifier, solvent, defoamer, pH adjusting agent etc.Described macromolecule cyst material is polyureas, Polyurethane, PIC, polyamide, Merlon, polysulfonamide, polystyrene, polycarboxylate and it is crosslinked, non-crosslinked combination, urea-formaldehyde resin, gelatin, gum Arabic, sucrose, one or more in modified starch combine, and the macromolecule cyst material of described microcapsule suspending agent accounts for 1 ~ 10% of gross weight; Described emulsifier is one or more combinations in fatty alcohol-polyoxyethylene ether, anion naphthalene sulfonate, lignosulfonates, carboxymethyl cellulose, alkylbenzenesulfonate, fatty alcohol sulfonate, alkylphenol polyoxyethylene, polyethers, polyacrylic acid, polystyrene and copolymer-maleic anhydride, phenyl phenol polyoxyethanyl ether phosphate, and the emulsifier of described microcapsule suspending agent accounts for 0.1 ~ 8% of gross weight; Described solvent is one or more combinations in benzene,toluene,xylene, acetonitrile, ethanol, propyl alcohol, methyl oleate, vegetable oil, nitrobenzene, DMA, and the solvent of described microcapsule suspending agent accounts for 1 ~ 30% of gross weight; Described defoamer is silicone, C
8-C
10one or more combinations in aliphatic alcohols, acid amides, Mandelate class, the defoamer of described microcapsule suspending agent accounts for 0.01 ~ 2% of gross weight; Described pH adjusting agent is one or more combinations in sodium hydroxide, hydrochloric acid, citric acid, sorbic acid, and the pH adjusting agent of described microcapsule suspending agent accounts for 0.01 ~ 5% of gross weight; Described dispersant is one or more combinations in alkylbenzenesulfonate, fatty alcohol sulfonate, alkylphenol polyoxyethylene, naphthalenesulfonate formaldehyde condensation compound, polycarboxylate, spaonin powder, lignosulfonates, polyvinyl alcohol, and the dispersant of described microcapsule suspending agent accounts for 1 ~ 10% of gross weight.
A kind of Herbicidal composition for rice field of the present invention, this Herbicidal combinations is applied in paddy field.
A kind of Herbicidal composition for rice field of the present invention, described gross weight refers in particular to the gross weight of this Herbicidal combinations.
Advantage of the present invention is:
The present invention finds mesotrione and the composite Herbicidal combinations of symetryne by research, paddy field weeding has obviously synergistic effect, energy high-efficiency prevention and control broad leaved weed, sedge weed, and consumption is few, easy to use, residual few on rice crop, environmental protection, has fully demonstrated the strategy of sustainable development.
embodiment:
Following examples are for describing the present invention in detail.
embodiment 1:
Each composition weight proportioning of 81.7% mesotrione symetryne wetting powder and compound method: mesotrione 19%, symetryne 62.7%, white carbon 5%, polyoxyethylene nonylphenol ether 5%, calcium lignosulfonate 8.3%.First adsorb polyoxyethylene nonylphenol ether with white carbon, then make it fully mix under agitation each material, be crushed to certain fineness.Its using method: dispenser in 5 ~ 7 days after rice transplanting, per hectare is with 400 grams (active ingredients 326.8 grams), and thin moisture soil (sand) is mixed thoroughly and spread fertilizer over the fields.During dispenser, should there be 3 ~ 5 centimetres of shoaling layers in field, and water conservation is normal management after 5 ~ 7 days.As lack of water can slowly moisturizing can not draining, but water layer can not flood paddy rice lobus cardiacus.Main control angustifolia arrowhead herb, Monochoria korsakowii, wild arrowhead, rhizoma alismatis, firefly Lin, nutgrass flatsedge etc.
The drug effect report of 81.7% mesotrione symetryne wetting powder: dispenser in 5-7 days after rice transplanting, after dispenser, 21 days investigation strain preventive effect results are as follows:
Described in this patent each dose occupies effect component ratio and all refers to, the ratio of each active ingredient in described formulation gross weight.
Result of the test shows: mesotrione, symetryne are used rear herbicidal effect with and be higher than arbitrary single dose in component, are conducive to increasing drug effect mutually, expands herbicide spectrum, and without antagonism.
embodiment 2:
73.1% mesotrione symetryne dispersibles each composition weight proportioning and the compound method of granula: mesotrione 17%, symetryne 56.1%, Sodium Polyacrylate 4%, modified starch 0.9%, neopelex 5%, urea 2%, alkyl pyrrolidone 3%, precipitated calcium carbonate 12%.Once added in reactor by each material and use deionized water wet mixing, make it fully mix under agitation, wet grinding, to certain fineness, then carries out slurry-spraying pelletizing in dry high tower.Its using method: dispenser in 5 ~ 7 days after rice transplanting, per hectare with 450 grams (active ingredients 329 grams), is mixed fertilizer and is mixed thoroughly and spread fertilizer over the fields.During dispenser, should there be 3 ~ 5 centimetres of shoaling layers in field, and water conservation is normal management after 5 ~ 7 days.As lack of water can slowly moisturizing can not draining, but water layer can not flood paddy rice lobus cardiacus.Main control angustifolia arrowhead herb, Monochoria korsakowii, rhizoma alismatis, firefly Lin, nutgrass flatsedge etc.
73.1% mesotrione, symetryne dispersible the drug effect report of granula: dispenser in 5-7 days after rice transplanting, and after dispenser, 21 days investigation strain preventive effect results are as follows:
Described in this patent each dose occupies effect component ratio and all refers to, the ratio of each active ingredient in described formulation gross weight.
Result of the test shows: mesotrione, symetryne are used rear herbicidal effect with and be higher than arbitrary single dose in component, are conducive to increasing drug effect mutually, expands herbicide spectrum, and without antagonism.
embodiment 3:
Each composition weight proportioning of 51.6% mesotrione symetryne suspending agent and compound method: mesotrione: 12%, symetryne: 39.6%, Sodium Polyacrylate: 2.5%, ethylene glycol: 3%, alkylphenol polyoxyethylene 5%, water: surplus adds to 100% weight portion.Each material is joined in reactor, makes it fully mix under agitation, wet grinding to particle diameter at 2.5 ~ 5 microns.Its using method: dispenser in 5 ~ 7 days after rice transplanting, per hectare with 625 grams (active ingredients 322.5 grams), is mixed fertilizer and is mixed thoroughly and spread fertilizer over the fields.Or oil-suspending agent every mu 80 grams is mixed fine sand soil 4 kilograms, evenly spill and execute.During dispenser, should there be 3 ~ 5 centimetres of shoaling layers in field, and water conservation is normal management after 5 ~ 7 days.As lack of water can slowly moisturizing can not draining, but water layer can not flood paddy rice lobus cardiacus.Main control angustifolia arrowhead herb, Monochoria korsakowii, wild arrowhead, rhizoma alismatis, firefly Lin, nutgrass flatsedge etc.
The drug effect report of 51.6% mesotrione symetryne suspending agent: dispenser in 5-7 days after rice transplanting, after dispenser, 21 days investigation strain preventive effect results are as follows:
Described in this patent each dose occupies effect component ratio and all refers to, the ratio of each active ingredient in described formulation gross weight.
Result of the test shows: mesotrione, symetryne are used rear herbicidal effect with and be higher than arbitrary single dose in component, are conducive to increasing drug effect mutually, expands herbicide spectrum, and without antagonism.
embodiment 4:
Each composition weight proportioning of 38.7% mesotrione symetryne missible oil and compound method: mesotrione 9%, symetryne 29.7%, methyl alcohol 6%, monoethanolamine 2%, dimethyl sulfoxide (DMSO) 12%, styryl phenol polyethenoxy ether phosphate 13%, calcium dodecyl benzene sulfonate 5%, dimethylbenzene 23.3%, controls pH value and is less than 7.Each material is once joined in reactor, makes it fully mix under agitation.Its using method: dispenser in 5 ~ 7 days after rice transplanting, per hectare with 850 grams (active ingredients 328.95 grams), is mixed fertilizer and is mixed thoroughly and spread fertilizer over the fields.During dispenser, should there be 3 ~ 5 centimetres of shoaling layers in field, and water conservation is normal management after 5 ~ 7 days.As lack of water can slowly moisturizing can not draining, but water layer can not flood paddy rice lobus cardiacus.Main control angustifolia arrowhead herb, Monochoria korsakowii, wild arrowhead, rhizoma alismatis, firefly Lin, nutgrass flatsedge etc.
The drug effect report of 38.7% mesotrione symetryne missible oil: dispenser in 5-7 days after rice transplanting, after dispenser, 21 days investigation strain preventive effect results are as follows:
Described in this patent each dose occupies effect component ratio and all refers to, the ratio of each active ingredient in described formulation gross weight.
Result of the test shows: mesotrione, symetryne are used rear herbicidal effect with and be higher than arbitrary single dose in component, are conducive to increasing drug effect mutually, expands herbicide spectrum, and without antagonism.
embodiment 5:
Each composition weight proportioning of 17.2% mesotrione symetryne oil-suspending agent and compound method: mesotrione 4%, symetryne 13.2%, organobentonite 1.0%, alkylphenol polyoxyethylene (OP-4) 6%, alkylphenol polyoxyethylene (OP-10) 6%, n-butanol 5%, methyl oleate 64.8%.Each material is joined in reactor, makes it fully mix under agitation, wet grinding to average grain diameter at 2.5 ~ 3.0 microns.
Described in this patent each dose occupies effect component ratio and all refers to, the ratio of each active ingredient in described formulation gross weight.
embodiment 6:
34.4% mesotrione symetryne dispersibles each composition weight proportioning and the compound method of granula: mesotrione 8%, symetryne 26.4%, Sodium Polyacrylate 4%, modified starch 1.4%, neopelex 3%, urea 2%, alkyl pyrrolidone 3%, calcium lignosulfonate 8%, bentonite 44.2%.Once added in reactor by each material and use deionized water wet mixing, make it fully mix under agitation, wet grinding, to certain fineness, then carries out slurry-spraying pelletizing in dry high tower.
Described in this patent each dose occupies effect component ratio and all refers to, the ratio of each active ingredient in described formulation gross weight.
embodiment 7:
Each composition weight proportioning of 4.3% mesotrione symetryne granula and compound method: mesotrione 1%, symetryne 3.3%, calcium lignosulfonate 10%, modified starch 3%, lauryl sodium sulfate 3%, urea 3%, brown coal powder 20%, bentonite 56.7%.By mesotrione, symetryne, calcium lignosulfonate co-grinding to 425 order fineness, same to bentonite, brown coal powder mix.Urea, modified starch are dissolved in water, make Granulating Bonding Agent, use granulating disc granulation, size controlling is at about 2-4mm.
Described in this patent each dose occupies effect component ratio and all refers to, the ratio of each active ingredient in described formulation gross weight.
embodiment 8:
Each composition weight proportioning of 17.2% mesotrione symetryne microcapsule suspending agent and compound method: mesotrione 4%, symetryne 13.2%, Lauxite 5%(urea: formaldehyde molal weight is than being 1:1.8), gum Arabic 0.15%, nitrobenzene+N, accelerine 20%, neopelex 0.2%, Sodium Polyacrylate 2%, xanthans 0.2%, silicone defoaming agent 0.05%, deionized water surplus.
First be 1:1.8 ratio according to urea and formaldehyde quality mol ratio, the urea of some and formaldehyde are added in reactor, and add the water calculated, after 10% sodium hydroxide solution adjust ph to 8.5-9, be warming up to 65-70 DEG C to keep 90 minutes, being down to room temperature, to obtain 25% urea resin prepolymer for subsequent use.After again mesotrione, symetryne nitrobenzene+DMA being dissolved, add gum Arabic, neopelex, then add silicone defoaming agent, emulsification.Add urea-formaldehyde resin performed polymer again, fully after mixing, after the pH value to 2.5 of regulation system, be slowly warming up to 65 DEG C and maintain 2 hours.Adjust ph to neutral, and is cooled to about 30 DEG C, adds Sodium Polyacrylate, xanthans, balance deionized water, obtained 17.2% mesotrione symetryne microcapsule suspending agent.
Described in this patent each dose occupies effect component ratio and all refers to, the ratio of each active ingredient in described formulation gross weight.
Above example is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (8)
1. a Herbicidal composition for rice field, is characterized in that: said composition is containing active principle: (a) mesotrione; (b) symetryne; The weight ratio of active principle (a) and (b) is 1 ~ 80:1 ~ 80.
2. a kind of Herbicidal composition for rice field according to claim 1, is characterized in that: described composition also comprises auxiliary agent, auxiliary agent is 1 ~ 99% of gross weight;
At least containing a kind of surfactant in auxiliary agent; Described surfactant is alkyl sulfate, alkylbenzenesulfonate, fatty alcohol polyoxyethylene ether sulfate, alkylphenol polyoxyethylene, styryl phenol polyethenoxy ether, alkylphenol polyoxyethylene formaldehyde condensation products, castor oil polyoxyethylene ether, poly alkyl alcohol hold any one or multiple combination in oxygen vinethene, aliphatic alcohol polyethenoxy ester, polyol fatty acid ester and ethylene oxide adduct thereof, and described amount of surfactant accounts for 5 ~ 20% of gross weight.
3. a kind of Herbicidal composition for rice field according to claim 2, it is characterized in that: described auxiliary agent is that the auxiliary agent of missible oil includes cosolvent, solvent, described cosolvent is cyclohexanone, any one or multiple combination in acetone, halogenated hydrocarbons, low-molecular-weight amide-type, methyl alcohol, dimethyl sulfoxide (DMSO), and described cosolvent accounts for 5 ~ 20% of gross weight; Described solvent is one or more combinations in dimethylbenzene, toluene, solvent naphtha, and described solvent accounts for 15 ~ 85% of gross weight.
4. a kind of Herbicidal composition for rice field according to claim 2, it is characterized in that: described auxiliary agent is any one or the multiple combination that the auxiliary agent of oil-suspending agent has in bentonite, white carbon, Fatty acid methyl ester, soybean salad oil, and its weight accounts for 10 ~ 85% of gross weight.
5. a kind of Herbicidal composition for rice field according to claim 2, it is characterized in that: described auxiliary agent is auxiliary agent and the dispersant of wetting powder, the auxiliary agent of described wetting powder is any one or multiple combination in kaolin, bentonite, potter's clay, diatomite, white carbon, precipitated calcium carbonate, and the auxiliary agent of described wetting powder accounts for 1 ~ 70% of gross weight; Described dispersant is any one or multiple combination in naphthalenesulfonate formaldehyde condensation compound, anion naphthalene sulfonate, lignosulfonates, carboxymethyl cellulose, alkylbenzenesulfonate, fatty alcohol sulfonate, alkylphenol polyoxyethylene, polyethers, polyacrylic acid, polystyrene and copolymer-maleic anhydride, and described dispersant accounts for 5 ~ 20% of gross weight.
6. Herbicidal combinations according to claim 2, it is characterized in that, auxiliary agent containing water-dispersible granules in described auxiliary agent and dispersant, the auxiliary agent of described water dispersible granules is one or more combinations in kaolin, bentonite, potter's clay, diatomite, white carbon, precipitated calcium carbonate, and the auxiliary agent of described water dispersible granules accounts for 1 ~ 70% of gross weight; Described dispersant is any one or multiple combination in naphthalenesulfonate formaldehyde condensation compound, anion naphthalene sulfonate, lignosulfonates, carboxymethyl cellulose, alkylbenzenesulfonate, fatty alcohol sulfonate, soluble starch, lauryl sodium sulfate, alkylphenol polyoxyethylene, and described dispersant accounts for 5 ~ 20% of gross weight.
7. Herbicidal combinations according to claim 2, is characterized in that, the auxiliary agent containing microcapsule suspending agent in described auxiliary agent and dispersant, and the auxiliary agent of described microcapsule suspending agent is macromolecule cyst material, emulsifier, solvent, defoamer, pH adjusting agent etc.;
Described macromolecule cyst material is polyureas, Polyurethane, PIC, polyamide, Merlon, polysulfonamide, polystyrene, polycarboxylate and it is crosslinked, non-crosslinked combination, urea-formaldehyde resin, gelatin, gum Arabic, sucrose, one or more in modified starch combine, and the macromolecule cyst material of described microcapsule suspending agent accounts for 1 ~ 10% of gross weight; Described emulsifier is one or more combinations in fatty alcohol-polyoxyethylene ether, anion naphthalene sulfonate, lignosulfonates, carboxymethyl cellulose, alkylbenzenesulfonate, fatty alcohol sulfonate, alkylphenol polyoxyethylene, polyethers, polyacrylic acid, polystyrene and copolymer-maleic anhydride, phenyl phenol polyoxyethanyl ether phosphate, and the emulsifier of described microcapsule suspending agent accounts for 0.1 ~ 8% of gross weight; Described solvent is one or more combinations in benzene,toluene,xylene, acetonitrile, ethanol, propyl alcohol, methyl oleate, vegetable oil, nitrobenzene, DMA, and the solvent of described microcapsule suspending agent accounts for 1 ~ 30% of gross weight; Described defoamer is silicone, C
8-C
10one or more combinations in aliphatic alcohols, acid amides, Mandelate class, the defoamer of described microcapsule suspending agent accounts for 0.01 ~ 2% of gross weight; Described pH adjusting agent is one or more combinations in sodium hydroxide, hydrochloric acid, citric acid, sorbic acid, and the pH adjusting agent of described microcapsule suspending agent accounts for 0.01 ~ 5% of gross weight; Described dispersant is one or more combinations in alkylbenzenesulfonate, fatty alcohol sulfonate, alkylphenol polyoxyethylene, naphthalenesulfonate formaldehyde condensation compound, polycarboxylate, spaonin powder, lignosulfonates, polyvinyl alcohol, and the dispersant of described microcapsule suspending agent accounts for 1 ~ 10% of gross weight.
8. the weeding application of any one Herbicidal combinations described in claim 1 ~ 7 in paddy field.
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| CN106561700A (en) * | 2016-11-14 | 2017-04-19 | 安徽众邦生物工程有限公司 | Paddy direct sowing field ternary weeding composition |
| CN107372584A (en) * | 2017-08-04 | 2017-11-24 | 安徽圣丰生化有限公司 | A kind of herbicidal composition of the phosphine of barnyard grass containing Sha, mesotrione and symetryne |
| GB2555462A (en) * | 2016-10-31 | 2018-05-02 | Rotam Agrochem Int Co Ltd | Herbicidal composition comprising mesotrione |
| CN109362743A (en) * | 2018-11-19 | 2019-02-22 | 安徽远景作物保护有限公司 | A kind of Herbicidal combinations and its application containing symetryne |
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| CN103918690A (en) * | 2014-04-21 | 2014-07-16 | 齐齐哈尔盛泽农药有限公司 | Paddy field herbicidal composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2555462A (en) * | 2016-10-31 | 2018-05-02 | Rotam Agrochem Int Co Ltd | Herbicidal composition comprising mesotrione |
| GB2555462B (en) * | 2016-10-31 | 2021-07-07 | Rotam Agrochem Int Co Ltd | Herbicidal composition comprising mesotrione |
| US11445725B2 (en) | 2016-10-31 | 2022-09-20 | Jiangsu Rotam Chemistry Co., Ltd | Herbicidal composition comprising mesotrione |
| CN106561700A (en) * | 2016-11-14 | 2017-04-19 | 安徽众邦生物工程有限公司 | Paddy direct sowing field ternary weeding composition |
| CN107372584A (en) * | 2017-08-04 | 2017-11-24 | 安徽圣丰生化有限公司 | A kind of herbicidal composition of the phosphine of barnyard grass containing Sha, mesotrione and symetryne |
| CN109362743A (en) * | 2018-11-19 | 2019-02-22 | 安徽远景作物保护有限公司 | A kind of Herbicidal combinations and its application containing symetryne |
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