CN104012566B - Synergism weeding composition for paddy field - Google Patents
Synergism weeding composition for paddy field Download PDFInfo
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- CN104012566B CN104012566B CN201410283037.XA CN201410283037A CN104012566B CN 104012566 B CN104012566 B CN 104012566B CN 201410283037 A CN201410283037 A CN 201410283037A CN 104012566 B CN104012566 B CN 104012566B
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- paddy field
- mefenacet
- mesotrione
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- synergism
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- 238000009333 weeding Methods 0.000 title abstract description 11
- 239000004009 herbicide Substances 0.000 claims abstract description 47
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- 241000196324 Embryophyta Species 0.000 claims abstract description 31
- 239000005564 Halosulfuron methyl Substances 0.000 claims abstract description 28
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- 239000005578 Mesotrione Substances 0.000 claims abstract description 16
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention provides a synergism weeding composition for a paddy field. The synergism weeding composition comprises three components of mesotrione, mefenacet and halosulfuron-methyl with a weight part ratio of (2.5-6):(20-70):(1-2.5). According to the synergism weeding composition, the three components of the mesotrione, the mefenacet and the halosulfuron-methyl are compounded, thus the problem of resistance weeds is solved, the herbicide controlling spectrum to the weeds is enlarged, the weeds in the paddy field can be basically solved through once application of the synergism weeding composition, the work, the time and the labor are saved, and a certain action is achieved for increasing the yield and income of rice. Meanwhile, according to the synergism weeding composition, the use dosage of a pesticide is reduced, the adverse effect of the pesticide on an ecological environment is reduced, and the generation of the pesticide resistance is delayed. In addition, the synergism weeding composition can be processed into multiple time and labor-saving preparations, is directly spread and applied without being sprayed, and has meaning in today of increasing the labor cost more and more.
Description
Technical field
The invention belongs to technical field of pesticide, relate to the paddy field Synergistic herbicide compositions for intractable weeds such as resistant weed such as angustifolia arrowhead herb, dayflower, nutgrass flatsedge, barnyard grass and moleplant seeds particularly.
Background technology
The use of weed killer herbicide greatly reduces the labour intensity of peasant, but along with the Long-Time Service of conventional weed killer herbicide, also make weeds create great resistance, the simple dosage that strengthens can not be dealt with problems, and strengthen dosage and add cost on the one hand, also pollute environment on the other hand.At present, there is a large amount of resistance angustifolia arrowhead herbs, dayflower in the paddy field in northeast, the weeds such as a large amount of nutgrass flatsedges, barnyard grass, moleplant seed have appearred in south rice field, and on market, existing weed killer herbicide preventive effect is very micro-, and peasant brother feels simply helpless.
Mesotrione, has another name called mesotrione, chemical name: 2-(4-mesyl 2-nitro-benzoyl) thiacyclohexane-1,3-diketone, structural formula is:
This weed killer herbicide is corn field Common Herbicides, with its broad weed-killing spectrum, active high, miscibilty strong, to succession crop safety, use flexibly, Environmental compatibility is strong etc., and feature has comparatively great development in China is worth and promotes the use of prospect preferably.By test, the present invention expands it further in the application at paddy field, and finds that the Alismataceae weeds such as its antagonism angustifolia arrowhead herb, dayflower have special efficacy.
Mefenacet, have another name called ring grass amine, chemical name: 2 one benzothiazole-2-base oxygen-N-nitre antifebrins, structural formula is:
This weed killer herbicide is a kind of selectivity inner-adsorption conduction-type herbicide, soil is very strong to this product absorption affinity, after dispenser, dose major part is adsorbed on upper soll layer, effectively can prevent and kill off grassy weed, have special efficacy to barnyard grass in rudiment to the 2 leaf phase, to moleplant seed, needle spikesedge herb, wartwort, Monochoria vaginalis, mexicana, special-shaped nutgrass flatsedge, flat nutgrass flatsedge, cyperus iria and for many years aquatic nutgrass flatsedge also have certain preventive effect.
Halosulfuronmethyl, chemical name: 3-(4,6-dimethoxypyridin-2-base)-1-(1-nitre-3-chloro-4-methoxy formoxyl pyrazoles-5-base) sulfonylureas, structural formula is:
This weed killer herbicide belongs to sulfonylurea herbicide, for agent for removing grass in paddy field, can prevent and kill off broad leaved weed and Sha Ke weeds, as angustifolia arrowhead herb, rhizoma alismatis, nutgrass flatsedge etc.Prove by experiment: have special efficacy to the sedge weed rhizome of nutgrass flatsedge and angustifolia arrowhead herb.
Although mesotrione, mefenacet and halosulfuronmethyl are all can the weed killer herbicide of single use, are used alone and all have certain defect and limitation.In addition, although to have report to select in these three kinds of weed killer herbicides two or three used in combination for prior art, do not record and select to study the system experimentation of weeding resultant effect about concrete mixed ratio.On the whole, on the one hand, existing weed killer herbicide that is single or mixture all still exist narrow, the dosage of herbicide spectrum large, to defect and limitation such as the anti-heterodynes of malignant weed; On the other hand, prior art not the mixture of the above three kinds of weed killer herbicides of instruction use to address the aforementioned drawbacks completely and enlighten with circumscribed technology.
Summary of the invention
An object of the present invention is disposablely to prevent and kill off resistant weeds all in paddy field such as angustifolia arrowhead herb, dayflower, nutgrass flatsedge, barnyard grass, moleplant seed etc., greatly expand the restriction of mesotrione, mefenacet or halosulfuronmethyl herbicide spectrum separately, solve the resistance problem of weeds.
Another object of the present invention significantly reduces the amount of active component needed for control of weeds, thus reduce environmental pollution and reduce costs.
Another object of the present invention improves herbicide speed, particularly to the herbicide speed of grass family, broad-leaved section weeds.
In order to realize above-mentioned one or more objects, the present invention adopts following technical scheme:
A kind of paddy field Synergistic herbicide compositions, it is characterized in that: described Herbicidal combinations comprises mesotrione, mefenacet and halosulfuronmethyl three kinds of components, and mesotrione, mefenacet and the halosulfuronmethyl ratio of weight and number in described Herbicidal combinations is 2.5 ~ 6:20 ~ 70:1 ~ 2.5.
In a preferred embodiment, mesotrione, mefenacet and the halosulfuronmethyl ratio of weight and number in described Herbicidal combinations is 3:25:1.
In a preferred embodiment, described Herbicidal combinations also comprises auxiliary agent.
In the preferred embodiment of one, described auxiliary agent is be selected from one or more in solvent, emulsifier, wetting agent, stabilizing agent, dispersant, bleeding agent, thickener, defoamer, antifreezing agent, disintegrant, binding agent, filler, carrier, medium, surfactant.Above-mentioned auxiliary agent is various auxiliary agents conventional in pesticidal preparations, can change to some extent, be therefore not particularly limited according to different situations.
In a preferred embodiment, described Herbicidal combinations can make a kind of formulation in wetting powder, water dispersible granules, suspending agent, oil-suspending agent, effervescent tablet, Disket.
On the other hand, the invention still further relates to the purposes of above-mentioned Herbicidal combinations in the annual weed of water prevention rice field.More preferably, the purposes of above-mentioned Herbicidal combinations at control angustifolia arrowhead herb, dayflower, nutgrass flatsedge, barnyard grass and moleplant seed is related to.
Herbicidal combinations provided by the invention, the method that usual employing is directly spread fertilizer over the fields uses, and also can adopt other operation techniques agriculturally applied as required.
The present invention carries out ternary built to existing mesotrione, mefenacet and halosulfuronmethyl three kinds of weed killer herbicides.Select based on such ternary built just, the present invention achieves technique effect useful as follows:
1, Herbicidal combinations provided by the invention greatly expands herbicidal spectrum by the combination of three kinds of active principles, especially the performance such as antagonism weeds such as angustifolia arrowhead herb, dayflower, nutgrass flatsedge, moleplant seed, barnyard grass is excellent, thus a drug can solve various weed problem, compensate for defect when single dose uses and limitation.But prior art does not disclose the used in combination of above-mentioned weed killer herbicide can expand herbicidal spectrum and weeding once in so large degree ground.
2, Herbicidal combinations provided by the invention, obvious synergistic effect is shown in specific ratio range among a small circle, the control efficiency of composition is significantly improved than single dose, reduce the using dosage of agricultural chemicals, decrease times for spraying, reduce drug cost, decrease the adverse effect of agricultural chemicals to ecotope.But prior art is not recorded the used in combination of above-mentioned weed killer herbicide yet and can be reduced costs so significantly and reduce environmental pollution.
3, Herbicidal combinations provided by the invention, drug effect plays rapidly, and the lasting period is long, and weeding is fast, and use cost is low, easy to use, time saving and energy saving, and it applies huge economic benefit and social benefit.But prior art does not disclose the used in combination of above-mentioned weed killer herbicide yet and obtains so fast and that the duration is long drug effect.
4, Herbicidal combinations provided by the invention, three kinds of effective ingredient mechanism of action are different, can overcome the shortcoming that long-term single use easily produces resistance, extend the service life of medicament, to the comprehensive regulation important in inhibiting of Weed Resistance.
It is to be noted, although prior art reports three kinds of weed killer herbicides can be used in combination, and those skilled in the art also may be familiar with this mixing may have certain effect, but prior art does not instruct this mixing can bring so outstanding, obvious many-sided technique effect as above-mentioned in the present invention.That is, the selection made on the basis of existing technology of the present invention is to present invention offers unforeseeable technique effect.
In addition, what also it may be noted that is a bit, although the present invention is obtained by the experiment of system to the ternary built that three kinds of weed killer herbicides carry out, but this does not also mean that those skilled in the art just can obtain result of the present invention only by limited orthogonal experiment, this is because this wherein relates to applicant to the analysis of the know-why of weed killer herbicide mixture Herbicidal synergic and research, but these are analyzed and research does not belong to applying date technological know-how known to persons of ordinary skill in the art in the past, and just can neither be inferred by simple logic analysis.In other words, if do not have certain theory analysis and research, due to the process that Ternary is inherently very complicated, therefore those skilled in the art are difficult to the proportioning of being tested the optimization obtained acquired by the present invention by limited number of time.
Embodiment
The present invention is described for the following example, but is not intended to limit the present invention.Each preparation case study on implementation is corresponding with biological case study on implementation.
example of formulations
example of formulations 1: 29 wt% mesotrione-mefenacet-halosulfuronmethyl (2.5:25:1.5) wetting powders
Successively 25 grams of mesotriones, 250 grams of mefenacets, 15 grams of halosulfuronmethyls, 30 grams of NNO, 50 grams of sodium lignin sulfonates, 20 grams of white carbons, 610 grams of kaolin are dropped in blender, stirring makes mixing of materials even in 30 minutes, then cross airslide disintegrating mill, fineness of materials crosses 325 mesh sieves.And then in a mixer mix and blend is carried out to material, obtain 29 wt% mesotrione-mefenacet-halosulfuronmethyl (2.5:25:1.5) wetting powders.
example of formulations 2: 30.5 wt% mesotrione-mefenacet-halosulfuronmethyl (4:25:1.5) oil-suspending agents
By in 575 grams of soybean oil suction containers, 60 grams of NONYL PHENOL POLYOXYETHYLENEs, 50 grams of castor oil polyoxyethylene ethers, 50 grams of calcium dodecyl benzene sulfonates are added in container, then adds 40 grams of mesotriones, 250 grams of mefenacets, 15 grams of halosulfuronmethyls, 20 grams of white carbons while stirring.Then high speed shear makes mixing of materials even in 30 minutes.Open cycle water and control sand mill below 40 degree, material is through sand milling, and Con trolling index, obtains 30.5 wt% mesotrione-mefenacet-halosulfuronmethyl (3:25:1.5) oil-suspending agents.
example of formulations 3: 58 wt% mesotrione-mefenacet-halosulfuronmethyl (6:50:2) water dispersible granules
Successively 60 grams of mesotriones, 500 grams of mefenacets, 20 grams of halosulfuronmethyls, 40 grams of naphthalenesulfonate formaldehyde condensation compounds, 50 grams of calcium lignosulfonates, 20 grams of K12,20 grams of sodium sulphate, 20 grams of polyethylene glycol, 270 grams of kaolin are dropped in blender, stirring makes mixing of materials even in 30 minutes, then cross airslide disintegrating mill, fineness of materials crosses 325 mesh sieves.Add about 100 milliliters, water and be mixed into wet feed, wet method makes 20 order grains, dries 2 hours, after oven dry in pallet in hot-air oven at about 45 DEG C, after the whole grain of 18 mesh sieve, obtain 58 wt% mesotrione-mefenacet-halosulfuronmethyl (6:50:2) water dispersible granules.
example of formulations 4: 39 wt% mesotrione-mefenacet-halosulfuronmethyl (3:35:1) effervescent tablets
Successively 30 grams of mesotriones, 350 grams of mefenacets, 10 grams of halosulfuronmethyls, 110 grams of lauryl sodium sulfate, 40 grams of wooden sodium sulfonates, 150 grams of citric acids, 40 grams of kaolin are dropped in blender, stirring makes mixing of materials even in 30 minutes, then cross airslide disintegrating mill, fineness of materials crosses 325 mesh sieves.Add 10% poly-vinyl alcohol solution 100 milliliters prepared in advance, wet method makes 20 order grains, be placed in pallet to dry 2 hours at about 45 DEG C at hot-air oven, 200 grams of sodium bicarbonates are added again after oven dry, 30 grams of dolomols, 30 grams of superfine silica gel powders, carry out compressing tablet with tablet press machine after mixing and namely obtain 39 wt% mesotrione-mefenacet-halosulfuronmethyl (3:35:1) effervescent tablets.
example of formulations 5: 29 wt% mesotrione-mefenacet-halosulfuronmethyl (3:25:1) Diskets
Successively 30 grams of mesotriones, 250 grams of mefenacets, 10 grams of halosulfuronmethyls, 100 grams of lauryl sodium sulfate, 40 grams of wooden sodium sulfonates, 250 grams of sodium carboxymethylcelluloses, 20 grams of starch, 100 grams of precipitated calcium carbonates are dropped in blender, stirring makes mixing of materials even in 30 minutes, then cross airslide disintegrating mill, fineness of materials crosses 325 mesh sieves.Add 10% poly-vinyl alcohol solution 100 milliliters prepared in advance, wet method makes 20 order grains, be placed in pallet to dry 1.5 hours at about 45 DEG C at hot-air oven, add 90 grams of sodium sulphate, 50 grams of dolomols again, 50 grams of superfine silica gel powders, carry out compressing tablet with tablet press machine after mixing and namely obtain 29 wt% mesotrione-mefenacet-halosulfuronmethyl (3:25:1) Diskets.
biological Examples
When the effect of active compound combinations exceedes the summation of the effect when each reactive compound is used separately, there is synergistic function.The predictive role of the particular combination of three kinds of reactive compounds can use " Colby formula " (see S.R.Colby, " Calculating Synergistic and Antagonistic Responses of Herbicide Combinations ", Weeds 1967,15,20-22) calculate as follows: if
A is the activity when using the reactive compound A that consumption is m ppm for m g/ha or concentration; B is the activity when using the reactive compound B that consumption is n ppm for n g/ha or concentration, is expressed as the percentage accounting for untreated control; C is the activity when using the reactive compound C that consumption is h ppm for h g/ha or concentration, is expressed as the percentage accounting for untreated control; E is that expection during B and C is active when use consumption for m, n, h g/ha or concentration are the reactive compound A of m, n, h ppm,
E=
N is 3;
If the activity of actual observation (O) is greater than expection active (E), so namely said composition has synergistic effect.
Inventor is by a large amount of screening tests, the different ratio of mesotrione, mefenacet and halosulfuronmethyl test and preventive effect analysis have been carried out a large amount of, find in specific ratio range among a small circle, the Herbicidal combinations obtained has synergistic effect, antagonism weeds such as angustifolia arrowhead herb, dayflower, nutgrass flatsedge, barnyard grass, moleplant seed etc. have excellent preventive effect, are illustrated with following biologicall test example.
Reagent agent: 15% mesotrione oil-suspending agent, 70% mefenacet wetting powder, 75% halosulfuronmethyl water dispersible granules, 64% mefenacet. halosulfuronmethyl (30:2) wetting powder and the preparation 1-5 prepared above, all medicaments are company's self-configuring product.
For examination weeds: barnyard grass, moleplant seed, difformed galingale herb, angustifolia arrowhead herb, dayflower etc.
Implementation method: adopt indoor biometrics method, using every for the seed of each weeds 100 as a process, indoor cultivation, after weeds are broadcast before seedling or grow to the 3-5 leaf phase after emerging and carry out spraying and process, the victimization state of observation weeds, and adds up test of pesticide effectiveness result.
Table 1 reagent agent is to the control efficiency of weeds
The data of analytical table 1 can be found out: the composite preventive effect (92.4-95.7%) of composition is significantly higher than the control efficiency (68.0-79.3%) of three corresponding single doses and benzene thiophene-phonetic complex preparation of chlorine pyrrole, especially to malignant weeds such as barnyard grass, moleplant seed, angustifolia arrowhead herb, dayflowers, composition preventive effect all significantly improves than mefenacet, halosulfuronmethyl and the combination preventive effect of the two, and difference is extremely remarkable.In addition, contrast single dose consumption all reduces consumption: mesotrione reduces to 6 grams by original every mu consumption 9 grams, and halosulfuronmethyl reduces to 2 grams by original every mu consumption 6 grams, and the combination further illustrating three kinds of compounds is remarkable for the gain of control weeds in paddy field.
The present invention is proved by test: compare single dose composition, and dosage reduces average more than 30%, and a drug can prevent and kill off the weeds in whole vegetative period.
Proved by field experiment: the mesotrione-mefenacet-halosulfuronmethyl composite preparation made, by spreading fertilizer over the fields, can prevent and kill off the resistant weeds such as angustifolia arrowhead herb, dayflower, nutgrass flatsedge, barnyard grass and moleplant seed effectively.
Above embodiment data show, the present invention relative to prior art expansion anti-grass spectrum, reduce Pesticide use dosage and reduce thus drug cost and environmental pollution and weeding fast and lasting effect long etc. in achieve unforeseeable technique effect.
Above with a general description of the specific embodiments to invention has been detailed description; but on basis of the present invention, can to work some amendment and improve, therefore; these done without departing from theon the basis of the spirit of the present invention amendments and improvement, all belong to the scope of protection of the invention.
Claims (1)
1. a paddy field Synergistic herbicide compositions, it is characterized in that: described Herbicidal combinations is made up of mesotrione, mefenacet and halosulfuronmethyl three kinds of components, and mesotrione, mefenacet and the halosulfuronmethyl ratio of weight and number in described Herbicidal combinations is 2.5 ~ 6:20 ~ 70:1 ~ 2.5.
2. paddy field synergistic composition according to claim 1, wherein mesotrione, mefenacet and the halosulfuronmethyl ratio of weight and number in described Herbicidal combinations is 3:25:1.
3. paddy field synergistic composition according to claim 1 and 2, wherein said Herbicidal combinations also comprises auxiliary agent.
4. paddy field synergistic composition according to claim 3, wherein said auxiliary agent is be selected from one or more in solvent, emulsifier, wetting agent, stabilizing agent, dispersant, bleeding agent, thickener, defoamer, antifreezing agent, disintegrant, binding agent, filler, carrier, medium, surfactant.
5. the paddy field synergistic composition according to claim 1,2 or 4, the formulation of wherein said Herbicidal combinations is the one in wetting powder, water dispersible granules, suspending agent, oil-suspending agent, effervescent tablet, Disket.
6. the purposes of the paddy field synergistic composition according to claim 1,2 or 4 in the annual weed of water prevention rice field.
7. the purposes of Herbicidal composition for rice field according to claim 6 in control angustifolia arrowhead herb, dayflower, nutgrass flatsedge, barnyard grass and moleplant seed.
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