CN104756998A - Metamifop.benzobicylon compound preparation and application thereof - Google Patents
Metamifop.benzobicylon compound preparation and application thereof Download PDFInfo
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Abstract
The invention relates to a compound preparation used for preventing and treating almost broadleaf weeds, grassy weeds and nutgrass flatsedge, and application thereof, and particularly relates to the compound preparation. The effective components of the compound preparation comprise two types of herbicides, namely metamifop and benzobicylon.
Description
Technical field
The present invention relates to and a kind ofly can be used for preventing and treating most broad leaved weed, the complex preparation of grassy weed and nutgrass flatsedge and application thereof, the complex preparation active ingredient be specifically related to is two kinds of weed killer herbicides, Fen other Wei metamifop and benzobicylon.
Background technology
Along with long-term single use sulfonylurea herbicide, paddy land weed produces resistance to/pesticide resistance in various degree, the difficult anti-weeds kind in paddy field gets more and more, as each paddy rice producing region in the whole nation in recent years, the weeds such as barnyard grass, Paspalum distichum, moleplant seed, Weedy Rice, rice Leersia Sw, agrostis stolonifera, difformed galingale herb, Monochoria vaginalis, pondweed, flat stalk Fischer grass, lustrous and transparent Lin, short arrowhead become advantage malignant weed, and grain security in serious threat.On the other hand, due to the change of tillage and cultivation mode, as the increase year by year of direct seading rice area, particularly dry direct-seeding rice area increases, and upland field weed water inlet field is current outstanding problem of eliminating in production practices, as lady's-grass, eleusine indica, green foxtail, moleplant seed etc.Therefore the task of top priority that a kind of mechanism of action is novel, the herbicidal composition of broad weed-killing spectrum is preparation research and development is developed.
Metamifop (metamifop), molecular formula is C
23h
18clFN
2o
4, molecular weight 440.87, chemical name: (R)-2-{ (chloro-1, the 3-benzoxazole-2-base oxygen of 4-) phenoxy group } and-2 '-fluoro-N-methyl-prop anilid.Former medicine outward appearance is light brown powder, fusing point 77.0-78.5 DEG C, solvability 0.69mg/L (20 DEG C, pH7) in water.Its structural formula is:
Metamifop is by Chemical Engineering Technology research institute of Korea S in exploitation in 1999 and the aryloxyphenoxypropanoates class weed killer herbicide of patent protection, its compound in calendar year 2001 in the patented protection of China.Metamifop is good to most of annual gramineous weed preventive effect, and to being greater than 3 leaf phase paddy rice high safeties, is mainly used in the rice field of various tillage method, and as live field, seedling throwing field, transplant field postemergence weed control, the lasting period can reach 40 days.Metamifop with its low toxicity, environmentally safe, miscibilty is strong etc., and advantage will become very promising a kind of weed killer herbicide.
Benzobicylon (benzobicyclon), molecular formula is C
22h
19clO
4s
2, molecular weight 446.96, chemical name 3-(the chloro-4-methylsulphonyl benzoyl of 2-)-2-thiophenyl dicyclo [3,2,1] is pungent.Sterling is Light yellow crystals, odorless.Solvability 0.052mg/L (20 DEG C, pH7) in water.Its structural formula is:
Benzobicylon is the albinism paddy field post-emergence herbicide of double-octane class of novelty of the research of Japanese SDS biotech firm, exploitation, code name SB-500.The said firm started synthesis in 1992, within 1994, applied for patent protection, now crossed patent protection period.Its twin nuclei of benzobicylon is combined with aralkyl sulfid structure, form the barrier structure be combined with enzyme, impart the high selectivity between its slow release characteristic and paddy rice-weeds, reduce water solubility and adsorption by soil simultaneously, and reduce medicament and divide a word with a hyphen at the end of a line downwards, the lasting period is long.This active component can prevent and kill off all kinds of weeds in paddy field, and especially having high leaf age weeds and firefly Lin that survives the winter and witheredly kill effect, is the unique effective agent preventing and kill off the false rice (Weedy Rice) of the perennial weed invading Honda from ditch side, paddy field.In view of above advantage, market has wide DEVELOPMENT PROSPECT at home.
For improving medication efficiency, saving drug cost, the present invention is by above two kinds of mechanism of action differences, and control spectrum complementary activity composition is composite for preventing and treating weeds in rice field, cereal crop and Gramineae lawn.Mixed ratio through technical research personnel Dui metamifop and benzobicylon conducts in-depth research, on the basis that formula indoor screens activity test and field medicine effect test, find that two kinds of active ingredients have obvious synergistic effect within the scope of certain mixed ratio.Compared with single dose, better to the perennial weed preventive effect that leaf age is large after both are mixed, and effectively can prevent and treat the weeds other conventional medicaments being produced to resistance, preventive effect is stablized.The present invention domesticly proposes metamifop mixed with benzobicylon first, belongs to domestically leading.
Summary of the invention
The object of the present invention is to provide the complex preparation of a kind of Han You metamifop and benzobicylon, can be used for the rice field of various tillage method, Cereal dry land and lawn etc., prevent and kill off most annual, perennial grass family, broad leaved weed and nutgrass flatsedge, comprise the weeds barnyard grass of resistance to/anti-sulfonylurea herbicide, moleplant seed, needle spikesedge herb, lustrous and transparent Lin, pondweed, tool awns cyperus iria etc.
Another object of the present invention is to propose the application for metamifop and benzobicylon Reasonable when this complex preparation, avoid blindly selecting each amounts of components and causing unnecessary waste, save drug cost, alleviate environmental pressure simultaneously, slow down resistance.
Be below the technical solution used in the present invention:
The invention provides the complex preparation of a kind of Han You metamifop and benzobicylon, it is characterized in that: effective ingredient Wei metamifop and benzobicylon two kinds, ratio of weight and number in complex preparation is 1 ~ 10:30 ~ 1, and preferred weight portion rate is 1:5 ~ 30, particularly preferably 1:15.
Above-mentioned complex preparation conventionally adds various auxiliary agent, carrier, can be processed into wetting powder, dispersible oil-suspending agent, any formulation that missible oil, water dispersible granules, aqueous suspension agent, effervescent agent, dispersant etc. are well known in the art.
Described complex preparation contains the agriculturally acceptable insecticides adjuvant of preparation needed for pesticidal preparations, 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, be known substance, various auxiliary agents conventional in pesticidal preparations, can change to some extent according to different situations, be not particularly limited.
To dispersible oil-suspending agent, emulsifier can be added in composition components, solvent, thickener, defoamer implement.One in the emulsifier that wherein said emulsifier is aliphatic alcohol sulfate, the salt of alkylaryl sulfonates, alkyl phenolic group APEO, fatty alcohol-polyoxyethylene ether, lignosulfonates, alkylnaphthalene sulfonate, naphthalene sulfonic acid-formaldehyde condensation product and this area are commonly used or any several combination; Described solvent is vegetable oil (as soybean oil, rapeseed oil, cottonseed oil, turpentine oil, Semen Ricini wet goods), mineral oil (paraffin series oil, methyl naphthalene higher aliphatic hydrocarbon ils) and mixed solvent thereof.Described thickener is dispersed silica, gaseous silicon oxide, clay mineral and some macromolecular compound (as xanthans) etc.Described defoamer be long-chain alcohol, polyglycerol, fatty acid and silicone based in one or any several combination.Compound method: solvent, emulsifier are put after metering to mixer for well-distribution, more quantitative defoamer, thickener dilution are proportionally added wherein, through high speed shear mixing in 30 ~ 60 minutes.Under circulating water controls, material crosses 325 mesh sieves through sand milling to fineness, and packing after indices detection is qualified, obtains Herbicidal combinations of the present invention and dispersible oil-suspending agent.
The present invention relates to the application of the multiple weeds such as barnyard grass, Weedy Rice, moleplant seed, needle spikesedge herb, lustrous and transparent Lin, pondweed, tool awns cyperus iria of above-mentioned complex preparation in control rice direct seeding field, transplant field, seedling throwing field and Cereal dry land, Gramineae lawn.
Complex preparation provided by the invention, usually adopts the method for directed spraying to use, also can adopt other operation techniques agriculturally applied as required.
Compared to prior art, advantage applies of the present invention exists:
Complex preparation provided by the invention expects that the corresponding product changed into is domestic initiation.In addition, to be that two kinds of active components that the mechanism of action is different are composite form this complex preparation, can avoid on the one hand singlely using the problem producing resistance, to the prolongation service life of medicament and the comprehensive regulation important in inhibiting of Weed Resistance for a long time.Complicated operation in can avoiding on the other hand that bucket is mixed and using, the problem such as easily to pollute, can reduce labor intensity, reduce operation technique level.
Complex preparation provided by the invention, comparatively single dose expands herbicide spectrum and range of application.Said composition can prevent and kill off annual and perennial grassy weed, broad leaved weed, sedge weed, especially resists sulfonylurea herbicide weeds, part algae.Good preventive effect is all had to the weeds of larger leaf age about weeds to the 5 leaf phase before emerging, excellent to the upland field weed performance in paddy field, dryland paddy especially, as lady's-grass, eleusine indica, moleplant seed, knotweed etc.
Complex preparation provided by the invention, within the scope of the special ratios of two components, each single dose consumption greatly reduces, and alleviates environmental pressure, improves the safety to crop, thus extends the applicable medication phase.This Herbicidal combinations can after crop is broadcast before bud to the crop 7 leaf phase all can medication, the lasting period reaches 40-60d, can realize the hope that most weeds are once prevented and kill off in a Growing season medication.The composition that the present invention proposes this two active ingredient first can be used for the cereal crop field such as wheat, corn and most of Gramineae lawn.The present invention for ensureing crop safety, enhancing productivity that it is low to provide a kind of consumption, the weeds solution of applied widely, low toxic and environment-friendly.
Complex preparation provided by the invention, in specific proportion, two kinds of active ingredients show obvious synergistic effect.The present inventor is tested and field trial checking by a large amount of raw test, and the grassy weed preventive effect that this compounded combination especially produces resistance in various degree to sulfonylurea is good, and as barnyard grass, moleplant seed, eleusine indica etc., weeding is thorough, does not turn green.Another better to the malignant weed such as Weedy Rice, rhizome of nutgrass flatsedge preventive effect., between 134 ~ 349, synergistic effect is remarkable for metamifop and the co-toxicity coefficient of benzobicylon in the scope of 1:30 ~ 10:1 (the abundant method of Sun Yun).
Complex preparation provided by the invention, drug effect is played stably, and symptom is obvious, and weeding is thorough, and drug cost is low, and operation technique is simple, and it changes into corresponding product will fill up domestic market blank, and it is applied has huge economic benefit and social benefit.
It is to be noted, those skilled in the art may recognize by used in combination for different types of weed killer herbicide with the effect reaching broad weed-killing spectrum, but prior art does not instruct this mixing can bring as above-mentioned in the present invention so outstanding, obvious many-sided technique effect and application.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, the present invention to two kinds of weed killer herbicides carry out composite be obtained by the experiment of system, 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 wherein relate 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 the conclusion and test effect that just can obtain acquired by the present invention neither be tested by simple logic analysis and limited number of time.
Embodiment
The present invention is described for following Examples, but does not limit the present invention.Each preparation case study on implementation is corresponding with biological case study on implementation.
Example of formulations
Example of formulations 1:31% metamifop benzobicylon (1:30) wetting powder
Successively Jiang metamifop 10 grams, benzobicylon 300 grams, white carbon 410 grams, naphthalenesulfonate formaldehyde condensation compound 155 grams, lauryl sodium sulfate 45 grams, in 600#-P polycarboxylate 80 grams of input blenders, stirring 30 minutes is that mixing of materials is even, about miniature air stream cracker is crushed to 900 orders, obtain 31% metamifop benzobicylon (1:30) wetting powder.
Example of formulations 2:72% metamifop benzobicylon (12:60) wetting powder
Successively 120 Ke metamifop, 600 grams of benzobicylons, 30 grams of NNO, 50 grams of sodium lignin sulfonates, 30 grams of white carbons, 170 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 72% metamifop benzobicylon (12:60) wetting powder.
Example of formulations 3: 30% metamifop benzobicylon (24:6) dispersibles oil-suspending agent
510 grams of soybean oils in suction container, 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 240 Ke metamifop, 60 grams of benzobicylons are added while stirring, 30 grams of white carbons.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 fineness crosses 325 mesh sieves, obtains 30% metamifop benzobicylon (24:6) and dispersibles oil-suspending agent.
Example of formulations 4: 40% metamifop benzobicylon (20:20) water dispersible granules
Successively 200 Ke metamifop, 200 grams of benzobicylons, 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, 450 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 in pallet in hot-air oven at about 45 DEG C, after oven dry, after the whole grain of 18 mesh sieve, both obtains 40% metamifop benzobicylon (20:20) water dispersible granules.
Example of formulations 5: 55% metamifop benzobicylon (5:50) aqueous suspension agent
360 grams of deionized waters in suction container, 40 grams of polystyrene phenol polyoxyethylene phosphonates, 20 grams of ethylene glycol are added in container, then 50 Ke metamifop, 500 grams of benzobicylons, 25 grams of aluminium-magnesium silicates are added while stirring, 5 grams of xanthans, 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 fineness crosses 325 mesh sieves, obtains 55% metamifop benzobicylon (5:50) aqueous suspension agent.
Example of formulations 6: 25.6% metamifop benzobicylon (1.6:24) effervescent agent
Successively 16 Ke metamifop, 240 grams of benzobicylons, 60 grams of lauryl sodium sulfate, 40 grams of wooden sodium sulfonates, 240 grams of citric acids, 200 grams of sodium bicarbonates, 154 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, 20 grams of dolomols are added again after oven dry, 20 grams of superfine silica gel powders, carry out the whole grain of compressing tablet with tablet press machine after mixing and namely obtain 25.6% metamifop benzobicylon (1.6:24) effervescent agent.
Example of formulations 7:18% metamifop benzobicylon (10:8) suspending agent
By 60 grams of polystyrene phenol polyoxyethylene phosphonates, 30 grams of ethylene glycol, 455 grams of deionized waters, add in container, then 100 Ke metamifop, 80 grams of benzobicylons, 25 grams of aluminium-magnesium silicates are added while stirring, above-mentioned material is injected sand mill and grinds 1h, cycle water controls sand mill below 40 degree, 325 mesh sieves crossed by material after grinding, the 2% xanthan gum solution 250g prepared in advance is added wherein, through emulsification pretreatment 30 minutes, obtain 18% metamifop benzobicylon (10:8) suspending agent.
Biological Examples
The screening of composite reagent ratio first adopts common malicious factorization method Preliminary screening to go out to have the compound proportion of synergistic effect, then obtain equation of linear regression according to lethality design concentration gradient, and the EC90 of each process measured is converted into actual poison exponent (ATI); According to the proportioning of mixture, obtain theoretical toxicity index (TTI), the co-toxicity coefficient (CTC) by following formulae discovery mixture: the co-toxicity coefficient method with reference to the abundant method of Sun Yun (Y-P Sun) and John son is evaluated.
The malicious factor altogether=(actual measurement lethality-theoretical lethality)/theoretical lethality × 100
Malicious factor > 20 indicates synergistic effect altogether, and-20≤malicious factor≤20 expression summation action altogether, effect is subtracted each other in malicious factor <-20 expression altogether.
If co-toxicity coefficient is greater than 120, show there is synergistic effect; If be starkly lower than 80, be indicated as antagonism; Between 100 ~ 120, be indicated as summation action.
Take eleusine indica as examination material, preventive effect is investigated with reference to " The Ministry of Agriculture of the People's Republic of China, MOA professional standard NYT 1155.9-2008 farm-chemical indoor determination test rule weed killer herbicide the 9th part: herbicide for paddy field active determination test cauline leaf spray-on process ", survey Shi Yan Zheng metamifop and florasulam two kinds has synergistic effect within the scope of certain proportion through series of indoor is raw, concrete evaluation method and data as follows:
The each compounded combination of table 1 is to the common malicious factor of eleusine indica
By the known ， of upper table data when metamifop ratio mixed with benzobicylon is 1:45 and 15:1, the malicious factor is all less than 20 altogether, is summation action, other are all greater than 20 for examination ratio, are synergistic effect, wherein 1:15, the common malicious factor of 1:10,1:5 is all greater than 100, and synergistic effect is remarkable.
The different Pei of table 2 measures Bi metamifop benzobicylon the synergy of eleusine indica
As seen from the above table, the basis of the common malicious factor is verified again with reference to the abundant method of Sun Yun and obtains identical effect, above 7 ratios are synergistic effect Qie metamifop and benzobicylon synergistic effect in the scope of 1:5 ~ 30 is remarkable, co-toxicity coefficient is between 255 ~ 349, can be used as the preferred proportion of said composition.When Te other Di ， metamifop and benzobicylon 1:15, co-toxicity coefficient is maximum, as optimal proportion.
Preventive effect may be affected by the factor such as environment, pesticide application technology when considering the practical application of weed killer herbicide field, inventor is mixed with respective sample by as above example of formulations, with reference to National Standard of the People's Republic of China's pesticide field efficacy medicine test criterion (one) weed killer herbicide water prevention weeds in paddy field GB/T17980-40-2000, weed killer herbicide control of maize ground weeds GB/T17980-42-2000; Pesticide field efficacy medicine test criterion (two) weed killer herbicide control lawn ground weeds GB/T17980-138-2004, design field efficiency test, Yi Ming Que metamifop rear drug effect mixed with benzobicylon and the safety to crop.Concrete test operation is as follows:
Test medicine: example of formulations 1 ~ 7, specific as follows:
Preparation 1:31% metamifop benzobicylon (1:30) wetting powder
Preparation 2:72% metamifop benzobicylon (12:60) wetting powder
Preparation 3:30% metamifop benzobicylon (24:6) dispersibles oil-suspending agent
Preparation 4:40% metamifop benzobicylon (20:20) water dispersible granules
Preparation 5:55% metamifop benzobicylon (5:50) aqueous suspension agent
Preparation 6:25.6% metamifop benzobicylon (1.6:24) effervescent agent
Preparation 7:18% metamifop benzobicylon (10:8) suspending agent
Contrast medicament: 10% metamifop wetting powder (WP), 25% benzobicylon suspending agent (SC)
Pilot survey object: be selected from cold water ditch autumn harvest rice transplanting rice field (japonica rice), is selected from Anhui six long-grained nonglutinous rice safety testing and pacifies plant protection unit experimental field efficiency test, and it is barnyard grass, Weedy Rice, moleplant seed, lustrous and transparent Lin, pondweed that weeds are mainly investigated in field.Be selected from plant area experimental field, field main weeds is the rhizome of nutgrass flatsedge, acalypha copperleaf corn trials.Chewing fescue lawn is experimental field selected from Industry North Road roadside greenbelt, and main weeds is eleusine indica, field thistle.
Spraying time: rice field weeds in field moleplant seed, barnyard grass, Weedy Rice all sprout substantially, 3 ~ 5 leaf phases, lustrous and transparent Lin, pondweed 2 ~ 3 leaf phase.Put shoaling layer before dispenser, weeds more than 2/3 are surfaced.After dispenser, field is gone back in 2 ~ 3 sky and water, and keeps 3 ~ 5 centimetres of (not flooding the seedling heart to be as the criterion) water layers 5 ~ 7 days.Corn, chewing fescue turfgrass were respectively for 3 ~ 5 leaf phases, 6 ~ 8 leaf phase dispensers.
Quarter Design: random district, community group arranges, 30 square metres, every community, repeats for 4 times.
Preventive effect is investigated: absolute-value scheme, and every community Stochastic choice 4 point, samples for 0.25 square metre often, and statistics weeds strain number, calculates strain preventive effect (E
1).
CK
0for number of weeds before dispenser, CK
1for number of weeds after dispenser; Pt
0for number of weeds before treatment region dispenser, Pt
1for number of weeds after treatment region dispenser.
Crop is investigated: observe medicament to crop with or without poisoning, the type of record poisoning and degree.The index such as 30 days (30d) plant heights, tiller number, fresh weights after investigation medicine.
Result of the test:
Table 3 metamifop benzobicylon composition is to 28d preventive effect after weeds in paddy field medicine
Table 4 metamifop benzobicylon composition is to 28d preventive effect after weeds medicine
Invalid to lustrous and transparent Lin, pondweed, acalypha copperleaf, field thistle broad leaved weed when being used alone from table 3,4: 10% metamifop WP, 45.44% is only to Weedy Rice preventing effectiveness, to the better lethality of the preventive effect of other grassy weeds about 90%.Benzobicylon is all better to grass family and broad leaved weed preventive effect, but the total careless preventive effect of the comparatively above example of formulations of total careless preventive effect is low 2 ~ 8 percentage points.Continuous observation through testing this group finds, be used alone benzobicylon and cause weeds all comparatively mixed preparation 2 ~ 4d in evening of withered death time, final death time difference is obvious.Comprehensive above example of formulations is to the preventive effect data of various weeds, and example of formulations 1,2,5,6 generally effect is better, and investigate mixed ratio known, these four embodiments use ratio with all in the scope of preferable range 1:5 ~ 30.Separately, recommend usage data known with reference to preparation each in upper table, after two-component is mixed, comparatively two single doses use effective ingredient consumption to greatly reduce respectively, not only reduce medication composition, use manpower and material resources sparingly, and decrease the pesticide volume rendered in farmland, alleviate environmental pressure.To sum up, the composition preventive effect that the present invention relates to, higher than the preventive effect of corresponding single dose, expands herbicide spectrum simultaneously, especially better to the preventive effect of the weeds such as Weedy Rice, moleplant seed, has obvious synergistic effect.
The each crop symptomatic reaction of observation post administration: initial stage after medicine, the long-grained nonglutinous rice of each example of formulations 100g process (being equivalent to times amount process) falls the yellow cord shape that the 1st, 2 leaf blade tips occur in various degree, and subsequently without obviously increasing the weight of, after medicine, about 10d recovers normally substantially; Long-grained nonglutinous rice 100g, the equal non-evident sympton of japonica rice 100g, 200g process; Comparatively blank is without obvious growth inhibition.Without obvious symptom of chemical damage after corn and chewing fescue lawn medicine, comparatively blank is without obvious growth inhibition.
30d after medicine, the indexs such as investigation crop tiller number, fresh weight, plant height, concrete data are in table 3.
30d crop pattern index after table 5 medicine
As seen from the above table, above example of formulations to the tiller number on long-grained nonglutinous rice, japonica rice, corn, chewing fescue lawn, fresh weight, plant height three index without remarkable suppression, general status and metamifop, benzobicylon single dose quite or safer compared with single dose, inhibitory action is less.In addition, compare said composition visible for each achievement data after long-grained nonglutinous rice and japonica rice process, the inhibitory action of the composition that the present invention relates to japonica rice is less, and safe-dosaging limits is wider.
Herbicidal combinations of the present invention also has higher safety to other paddy fields, dry land class cereal crop and gramineous lawn, does not repeat herein.
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 (7)
1. contain a complex preparation for metamifop and benzobicylon, it is characterized in that effective ingredient is metamifop and benzobicylon, ratio of weight and number is in the composition 1 ~ 10:30 ~ 1, and preferred weight portion rate is 1:5 ~ 30, particularly preferably 1:15.
2. complex preparation according to claim 1, wherein complex preparation conventionally adds auxiliary agent on the basis of two active ingredients.
3. complex preparation according to claim 2, wherein said auxiliary agent is 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.
4. according to the complex preparation of any one in claim 1-3, any formulation that the formulation of wherein said complex preparation can be selected from wetting powder, dispersibles oil-suspending agent, missible oil, water dispersible granules, aqueous suspension agent, effervescent agent, dispersant etc. are well known in the art.
5. according to the application of the complex preparation control farmland weed of any one in claim 1-4, the application of preferred control broad leaved weed, grassy weed and nutgrass flatsedge, more preferably prevents and treats the application of the multiple weeds such as barnyard grass, Weedy Rice, moleplant seed, needle spikesedge herb, lustrous and transparent Lin, pondweed, tool awns cyperus iria.
6. want according to right the application preventing and treating farmland weed in 5, it is characterized in that to before emerging weeds to the 5 leaf phase larger leaf age weeds all have the application of favorable effect.
7., according to the application preventing and treating farmland weed in claim 5, it is characterized in that the application to rice direct seeding field, transplant field, seedling throwing field and Cereal dry land, Gramineae lawn crop safety, crop broadcast before rear bud to 7 leaf phases all can medication.
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| CN109042689A (en) * | 2018-08-26 | 2018-12-21 | 孟州传奇生物科技有限公司 | A kind of built herbicide for rice field composition |
| CN109258643A (en) * | 2018-09-27 | 2019-01-25 | 安徽金敦福农业科技有限公司 | A kind of herbicidal formulations and its application method for paddy field management of weeds rice |
| CN110402924A (en) * | 2019-07-31 | 2019-11-05 | 淮安市植保植检站 | Transplanted rice field super large age barnyard grass control method |
| CN112568223A (en) * | 2020-04-13 | 2021-03-30 | 辽宁先达农业科学有限公司 | Weeding composition, application thereof and herbicide |
| CN112715545A (en) * | 2021-01-20 | 2021-04-30 | 合肥尚邦植保科技有限公司 | Herbicide composition containing benzobicylon, quinclorac and metamifop |
| CN113729016A (en) * | 2021-09-24 | 2021-12-03 | 合肥尚邦植保科技有限公司 | Crop sterilization composition based on methionine biosynthesis inhibition |
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| WO2003024224A2 (en) * | 2001-09-20 | 2003-03-27 | Syngenta Participations Ag | Herbicidal composition |
| CN1713820A (en) * | 2002-11-21 | 2005-12-28 | 辛根塔参与股份公司 | Herbidical composition |
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