CN103907631A - Herbicide composite for rice field - Google Patents
Herbicide composite for rice field Download PDFInfo
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- CN103907631A CN103907631A CN201410158091.1A CN201410158091A CN103907631A CN 103907631 A CN103907631 A CN 103907631A CN 201410158091 A CN201410158091 A CN 201410158091A CN 103907631 A CN103907631 A CN 103907631A
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- fentrazamide
- benzobicylon
- ethoxysulfuron
- weeds
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Abstract
The invention relates to a herbicide composite for a rice field. The active ingredients of the composite are fentrazamide, benzobicylon and ethoxysulfuron at the weight ratio of (1-2):(2-4):(1-5), preferably 1:2:4. The herbicide composite comprises reasonable ingredients, has complementary herbicide controlling spectra, can effectively prevent and kill all the weeds in the rice field and particularly has excellent effect on worst weeds which are difficult to prevent and kill for a long time and resistant weeds which occur in the rice field in recent years. Compared with a single dosage, the herbicide composite has obvious synergistic effect and can reduce the dosage and the application frequency. The herbicide composite has a long period of effect time, is highly safe to rice and meets the requirement of the development of pesticide preparations.
Description
[technical field]
The present invention relates to technical field of pesticide, particularly a kind of herbicidal composition of preventing and kill off paddy field grassy weed, broad leaved weed and sedge weed that is active component by fentrazamide, benzobicylon and ethoxysulfuron.
[background technology]
Paddy rice is the first cereal crops of China, and sowing area occupies the second in the world, and gross yield ranks first in the world.Rice has very important status in grain-production, and stable yields, the volume increase of paddy rice have important strategic importance to China's grain security.
Rice field weeds are the key factors that affect its output and quality, investigation discovery in recent years, and weeds in paddy field amounts to 14 sections kind more than 30.Wherein barnyard grass gramineous, moleplant seed, lady's-grass, eleusine indica etc.; The difformed galingale herb of sedge family, cyperus iria, wild water chestnut, needle spikesedge herb, firefly Lin etc.; The pondweed of broad leaved weed, angustifolia arrowhead herb, short arrowhead, dayflower, Procumbent Falsepimpernel etc. are all current rice field main weeds.Along with numerous weed killer herbicide kinds continue to use in paddy field large area, rice field resistant weed generally occurs, and malignant weed rises year by year.As: the long-term use of dichloro quinolinic acid makes China's most of rice district barnyard grass generally produce pesticide resistance to it, makes rice barnyard grass cause serious harm in many areas; The continuous use of sulfonylurea herbicide pyrazosulfuron, bensulfuron-methyl increases the weight of perennial angustifolia arrowhead herb, rhizoma alismatis, sedge weed and the harm of annual Monochoria korsakowii, and preventive effect glides, and in the situation that doubles to use, still can not effectively prevent and kill off.Therefore, develop barnyard grass is had to special efficacy, standing grain, the logical weed killer herbicide removing of wealthy, Sha are particularly important.
Fentrazamide is carbamyl tetrazolinone herbicides, molecular formula: C
16h
20clN
5o
2, chemical name: N-cyclohexyl-N-ethyl-4-(2-chlorphenyl)-4,5-dihydro-5-1H-tetrazolium-1-acid amides, chemical formula is:
The mechanism of action of this medicament is that interception is organized in plant cell division, causes fertility to be obstructed, and makes it withered.Fentrazamide has good preventive effect to most of annual weeds, as barnyard grass, difformed galingale herb, firefly Lin, Monochoria vaginalis, mexicana, especially to barnyard grass class and the different in nature nutgrass flatsedge best results to two leaf stage before seedling; When low dosage to advanced age barnyard grass also have high activity of weeding, but this weed killer herbicide only to part broad leaved weed effective, to false loosestrife, alternanthera philoxeroides, rhizoma alismatis weak effect, can not thoroughly prevent and kill off the broad leaved weed in rice field.
Benzobicylon is the weed killer herbicide after tooth for albinism paddy field of the double-octane class of the research of Japanese SDS biotech firm, exploitation, molecular formula: C
22h
19clO
4s
2, chemical formula is:
High and the broad weed-killing spectrum of the selectivity of this medicament between paddy rice and weeds, especially firefly Lin class of the tool awns cyperus iria that is difficult to for a long time prevent and kill off is had to tall and erect effect, simultaneously, this medicament is also very effective to the resistant weed of sulfonylurea herbicide, and can effectively prevent and kill off by furrow limit and prolong to false rice, Dao Zhuan Blighted shell grass and the difficulty of the Honda wart grass etc. of cutting weeds.Its herbicide speed is more slow, from occurring to 5 leaf phases for a long time in all very effective, and scape weeds elongating stage to high leaf age, can suppress the formation of bud completely, thereby destroy the renewal of next year seed.Moreover its lasting period is more than 6 weeks, even reaches 8 weeks.
Ethoxysulfuron belongs to sulfonylurea herbicide, is mainly used in preventing and kill off broad leaved weed and sedge weed (comprising pernicious convexutricle sedge herb).This medicament is inhibitor of acetolactate synthetase, by passing in plant corpus after weeds root and cauline leaf absorption, stops amino acid synthetic, and suppresses rapidly the growth of weeds cauline leaf and the elongation of root, finally causes weeds completely withered.To safety such as wheat, paddy rice, sugarcanes, on succession crop without impact.
The inventor selects herbicide spectrum different through lot of experiments, mechanism of action difference, fentrazamide, benzobicylon and the ethoxysulfuron of pluses and minuses complementation carry out rational proportion, can not only better prevent and treat like this paddy field grassy weed such as barnyard grass, moleplant seed prevailing, the sedge weeds such as the broad leaved weeds such as pondweed, Eclipta prostrata, Procumbent Falsepimpernel and firefly Lin, difformed galingale herb, convexutricle sedge herb are also had to good preventive effect.Reduce dosage and medication number of times simultaneously, reduce costs, save labour.
[summary of the invention]
Rise year by year in order to solve current paddy field resistant weed and malignant weed, the problem that herbicidal effect declines year by year, the object of this invention is to provide that a kind of component is reasonable, herbicidal effect good, Synergistic broad-spectrum, can prevent and kill off the herbicidal composition of direct seading rice field and transplanting rice field weed, said composition active ingredient is fentrazamide, benzobicylon and ethoxysulfuron comprehensively.
The present invention is achieved by the following technical solutions:
A kind of herbicidal composition of paddy field, containing active component fentrazamide, benzobicylon and ethoxysulfuron, wherein fentrazamide, benzobicylon and ethoxysulfuron three's weight ratio is (1-2): (2-4): (1-5), preferred weight ratio is 1:2:4.Fentrazamide, benzobicylon and ethoxysulfuron total amount are the 8%-80% of described composition total content.
According to method known in those skilled in the art, the preparation formulation that herbicide composition for paddy fields of the present invention can be prepared is wetting powder, water dispersible granules, effervescent agent, suspending agent.
Details are as follows for each formulation composition and preparation method:
Wetting powder is by the powderous preparations of the certain particle diameter making through air-flow crushing after even to active ingredient, carrier, wetting agent, dispersant etc. mixing, through after the assay was approved, obtains required wetting powder.
In wetting powder, carrier is one or more in atlapulgite, kaolin, montmorillonite, diatomite, attapulgite, bentonite, white carbon, precipitated calcium carbonate, starch; Dispersant is one or more in lignosulfonates, naphthalene and alkylnaphthalene sulfonate formaldehyde condensation products, alkylphenol polyoxyethylene formaldehyde condensation products, carboxymethyl cellulose, polycarboxylate; Wetting agent is one or more in alkyl sulfate, alkylnaphthalene sulfonate, Nekal BX (sodium butylnaphthalenesulfonate), fatty alcohol-polyoxyethylene ether, OPEO, polyoxyethylene nonylphenol ether.
Water dispersible granules be after active ingredient, carrier, wetting agent, dispersant, binding agent, disintegrant are mixed in blender through ultra micro air-flow crushing, the kneading that adds water after mixing, then carries out extruder grain, dry, screening, through after the assay was approved, obtains required water dispersible granules.
In water dispersible granules, carrier is one or more in kaolin, diatomite, white carbon, precipitated calcium carbonate, attapulgite, bentonite, starch; Wetting agent is one or more the combination in alkylbenzenesulfonate, alkylsulfonate, alkyl sulfate, alkylnaphthalene sulfonate, fatty alcohol-polyoxyethylene ether, Nekal BX (sodium butylnaphthalenesulfonate); Dispersant is one or more the combination in lignosulfonates, naphthalene and alkylnaphthalene sulfonate formaldehyde condensation products, alkylphenol polyoxyethylene formaldehyde condensation products, carboxymethyl cellulose, polycarboxylate; Disintegrant is one or more in bentonite, urea, modified starch, mineral salt, silica gel, sodium carboxymethylcellulose; Binding agent is one or more in sucrose, soluble starch, xanthans, polyvinyl alcohol.
Effervescent agent be after active ingredient, filler, wetting agent, dispersant, disintegrant, adhesive, lubricant are mixed in blender through ultra micro air-flow crushing, add absolute ethyl alcohol to mediate granulation, the granular formulations that has some strength obtaining after dry.
In effervescent agent, filler is a kind of or any several combination in kaolin, bentonite, diatomite, white carbon, attapulgite; Wetting agent is one or more the combination in alkylbenzenesulfonate, alkylsulfonate, alkyl sulfate, alkylnaphthalene sulfonate, fatty alcohol-polyoxyethylene ether, Nekal BX (sodium butylnaphthalenesulfonate); Dispersant is one or more the combination in lignosulfonates, naphthalene and alkylnaphthalene sulfonate formaldehyde condensation products, alkylphenol polyoxyethylene formaldehyde condensation products, carboxymethyl cellulose, polycarboxylate; In disintegrant, acid source is one or more in succinic acid, tartaric acid, hexanedioic acid, citric acid, malic acid, and carbon dioxide source is one or both in sodium carbonate, sodium bicarbonate; Adhesive is a kind of or any several combination in sucrose, starch, xanthans, polyvinyl alcohol, polyvidone, Sodium Polyacrylate; Lubricant is the one in dolomol, talcum powder.
Suspending agent is take water as dispersion medium, the formulations of pesticide that active ingredient, auxiliary agent (wetting dispersing agent, thickener, antifreezing agent, defoamer etc.) are made through soybean dietary fiber.
In suspending agent, wetting agent is one or more in lauryl sodium sulfate, neopelex, fatty alcohol-polyoxyethylene ether, OPEO, dioctyl sodium sulfosuccinate; Described dispersant is one or more in lignosulfonates, polycarboxylate, naphthalene and alkylnaphthalene sulfonate formaldehyde condensation products; Described thickener is one or more in xanthans, gel, aluminium-magnesium silicate, sodium alginate; Described antifreezing agent is one or more in ethylene glycol, glycerine, polyethylene glycol, urea, sorbitol; Described defoamer is the one in silicone defoaming agent, polyglycerol, polyether-modified silicon defoaming agent.
The beneficial effect of Herbicidal combinations of the present invention is:
1, activity of weeding is high.Three kinds of active ingredients have the different mechanism of action, can improve to greatest extent the herbicidal effect of Herbicidal combinations, and synergistic effect is obvious.
2, broad weed-killing spectrum.Herbicide is composed complementary mixture of herbicides can expand control of weeds spectrum, and a drug just can be prevented and treated all weeds in paddy field, comprises grassy weed, broad leaved weed and sedge weed.
3, the lasting period is long.This medicament has longer lasting effect, can reduce medication number of times, significantly reduces labour intensity.
[embodiment]
Below in conjunction with embodiment, the present invention is described further, but the present invention is not limited thereto.
Embodiment 1:80% fentrazamide benzobicylon ethoxysulfuron (1:2:1) wetting powder
Take 20% fentrazamide, 40% benzobicylon, 20% ethoxysulfuron, 6% sodium lignin sulfonate, 3% Nekal BX, kaolin and complement to 100%.The powderous preparations of the certain particle diameter making through air-flow crushing after above-mentioned raw materials is mixed in blender, through after the assay was approved, obtains 80% fentrazamide benzobicylon ethoxysulfuron wetting powder.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, Lin of battalion, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. are had to higher preventive effect, every mu of ground consumption 20-30 gram, is watered 30-40 kilogram and sprays or mix soil and spread fertilizer over the fields, and preventive effect is 82-85%.
Embodiment 2:70% fentrazamide benzobicylon ethoxysulfuron (1:3:1) wetting powder
Take 14% fentrazamide, 42% benzobicylon, 14% ethoxysulfuron, 7% polycarboxylate, 4% lauryl sodium sulfate, kaolin and complement to 100%.The powderous preparations of the certain particle diameter making through air-flow crushing after above-mentioned raw materials is mixed in blender, through after the assay was approved, obtains 70% fentrazamide benzobicylon ethoxysulfuron wetting powder.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. are had to higher preventive effect, every mu of ground consumption 30-40 gram, is watered 30-40 kilogram and sprays or mix soil and spread fertilizer over the fields, and preventive effect is 85-88%.
Embodiment 3:54% fentrazamide benzobicylon ethoxysulfuron (2:4:3) wetting powder.
Take 12% fentrazamide, 24% benzobicylon, 18% ethoxysulfuron, 5% naphthalene and alkylnaphthalene sulfonate formaldehyde condensation products, 4% fatty alcohol-polyoxyethylene ether, bentonite complements to 100%.The powderous preparations of the certain particle diameter making through air-flow crushing after above-mentioned raw materials is mixed in blender, through after the assay was approved, obtains 54% fentrazamide benzobicylon ethoxysulfuron wetting powder.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. are had to higher preventive effect, every mu of ground consumption 35-45 gram, is watered 30-40 kilogram and sprays or mix soil and spread fertilizer over the fields, and preventive effect is 80-83%.
Embodiment 4:38.5% fentrazamide benzobicylon ethoxysulfuron (2:2:3) wetting powder.
Take 11% fentrazamide, 11% benzobicylon, 16.5% ethoxysulfuron, 6% calcium lignosulfonate, 3% OPEO, kaolin and complement to 100%.The powderous preparations of the certain particle diameter making through air-flow crushing after above-mentioned raw materials is mixed in blender, through after the assay was approved, obtains 38.5% fentrazamide benzobicylon ethoxysulfuron wetting powder.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. are had to higher preventive effect, every mu of ground consumption 50-70 gram, is watered 30-40 kilogram and sprays or mix soil and spread fertilizer over the fields, and preventive effect is 88-90%.
Embodiment 5:45% fentrazamide benzobicylon ethoxysulfuron (1:3:5) wetting powder.
Take 5% fentrazamide, 15% benzobicylon, 25% ethoxysulfuron, 6% alkylnaphthalene sulfonate formaldehyde condensation products, 3% Nekal BX, kaolin and complement to 100%.The powderous preparations of the certain particle diameter making through air-flow crushing after above-mentioned raw materials is mixed in blender, through after the assay was approved, obtains 45% fentrazamide benzobicylon ethoxysulfuron wetting powder.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. are had to higher preventive effect, every mu of ground consumption 40-65 gram, is watered 30-40 kilogram and sprays or mix soil and spread fertilizer over the fields, and preventive effect is 85-88%.
Embodiment 6:75% fentrazamide benzobicylon ethoxysulfuron (1:2:2) water dispersible granules
Take 15% fentrazamide, 30% benzobicylon, 30% ethoxysulfuron, 3% lauryl sodium sulfate, 5% alkylnaphthalene sulfonate formaldehyde condensation products, 1% sodium carboxymethylcellulose, 3% sucrose, bentonite and complement to 100%.Above-mentioned raw materials is mixed in blender, after ultra micro air-flow crushing, mix, then the kneading that adds water, then carry out extruder grain, dry, screening, through after the assay was approved, obtains 75% fentrazamide benzobicylon ethoxysulfuron water dispersible granules.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. had to higher preventive effect, every mu of ground consumption 25-35 gram, is watered 30-40 kilogram of spraying, and preventive effect is 82-85%.
Embodiment 7:63% fentrazamide benzobicylon ethoxysulfuron (1:4:2) water dispersible granules
Take 9% fentrazamide, 36% benzobicylon, 18% ethoxysulfuron, 4% fatty alcohol-polyoxyethylene ether, 7% sodium lignin sulfonate, 5% urea, 2% polyvinyl alcohol, kaolin and complement to 100%.Above-mentioned raw materials is mixed in blender, after ultra micro air-flow crushing, mix, then the kneading that adds water, then carry out extruder grain, dry, screening, through after the assay was approved, obtains 63% fentrazamide benzobicylon ethoxysulfuron water dispersible granules.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. had to higher preventive effect, every mu of ground consumption 30-40 gram, is watered 30-40 kilogram of spraying, and preventive effect is 85-88%.
Embodiment 8:56% fentrazamide benzobicylon ethoxysulfuron (2:3:2) water dispersible granules
Take 16% fentrazamide, 24% benzobicylon, 16% ethoxysulfuron, 4% lauryl sulfate, 6% polycarboxylate, 3% sodium carboxymethylcellulose, 5% soluble starch, kaolin and complement to 100%.Above-mentioned raw materials is mixed in blender, after ultra micro air-flow crushing, mix, then the kneading that adds water, then carry out extruder grain, dry, screening, through after the assay was approved, obtains 56% fentrazamide benzobicylon ethoxysulfuron water dispersible granules.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. had to higher preventive effect, every mu of ground consumption 35-45 gram, is watered 30-40 kilogram of spraying, and preventive effect is 80-82%.
Embodiment 9:50% fentrazamide benzobicylon ethoxysulfuron (2:3:5) water dispersible granules
Take 10% fentrazamide, 15% benzobicylon, 25% ethoxysulfuron, 4% alkylnaphthalene sulfonate, 6% naphthalenesulfonate formaldehyde condensation compound, 3% sodium sulphate, 3% sucrose, bentonite and complement to 100%.Above-mentioned raw materials is mixed in blender, after ultra micro air-flow crushing, mix, then the kneading that adds water, then carry out extruder grain, dry, screening, through after the assay was approved, obtains 50% fentrazamide benzobicylon ethoxysulfuron water dispersible granules.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. had to higher preventive effect, every mu of ground consumption 35-50 gram, is watered 30-40 kilogram of spraying, and preventive effect is 82-85%.
Embodiment 10:42% fentrazamide benzobicylon ethoxysulfuron (2:4:1) water dispersible granules
Take 12% fentrazamide, 24% benzobicylon, 6% ethoxysulfuron, 4% alkylnaphthalene sulfonate, 6% alkylphenol polyoxyethylene formaldehyde condensation products, 2% silica gel, 3% soluble starch, bentonite and complement to 100%.Above-mentioned raw materials is mixed in blender, after ultra micro air-flow crushing, mix, then the kneading that adds water, then carry out extruder grain, dry, screening, through after the assay was approved, obtains 42% fentrazamide benzobicylon ethoxysulfuron water dispersible granules.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. had to higher preventive effect, every mu of ground consumption 40-60 gram, is watered 30-40 kilogram of spraying, and preventive effect is 82-85%.
Embodiment 11:35% fentrazamide benzobicylon ethoxysulfuron (2:2:1) effervescent agent
Take 14% fentrazamide, 14% benzobicylon, 7% ethoxysulfuron, 3% Nekal BX, 5% sodium lignin sulfonate, 21% citric acid, 17% sodium carbonate, 2% dolomol, 5% starch, bentonite and supply 100%.Above-mentioned raw materials is mixed in blender, after ultra micro air-flow crushing, mix, adding absolute ethyl alcohol mediates again, then carry out extruder grain, dry, sieve, obtain the granular formulations of certain degree of hardness, seal preservation through after the assay was approved, obtain 35% fentrazamide benzobicylon ethoxysulfuron effervescent agent.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. had to higher preventive effect, every mu of ground consumption 50-80 gram, directly spread fertilizer over the fields after pouring water in rice field, and preventive effect is 85-88%.
Embodiment 12:32% fentrazamide benzobicylon ethoxysulfuron (1:3:4) effervescent agent
Take 4% fentrazamide, 12% benzobicylon, 16% ethoxysulfuron, 3% lauryl sodium sulfate, 5% sodium lignin sulfonate, 19% citric acid, 25% sodium carbonate, 2% dolomol, 2% xanthans, bentonite and supply 100%.Above-mentioned raw materials is mixed in blender, after ultra micro air-flow crushing, mix, adding absolute ethyl alcohol mediates again, then carry out extruder grain, dry, sieve, obtain the granular formulations of certain degree of hardness, seal preservation through after the assay was approved, obtain 32% fentrazamide benzobicylon ethoxysulfuron effervescent agent.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. had to higher preventive effect, every mu of ground consumption 50-80 gram, directly spread fertilizer over the fields after pouring water in rice field, and preventive effect is 85-88%.
Embodiment 13:22% fentrazamide benzobicylon ethoxysulfuron (2:4:5) effervescent agent
Take 4% fentrazamide, 8% benzobicylon, 10% ethoxysulfuron, 4% lauryl sodium sulfate, 6% carboxymethyl cellulose, 14% malic acid, 19% sodium bicarbonate, 3% talcum powder, 4% Sodium Polyacrylate, kaolin and supply 100%.Above-mentioned raw materials is mixed in blender, after ultra micro air-flow crushing, mix, adding absolute ethyl alcohol mediates again, then carry out extruder grain, dry, sieve, obtain the granular formulations of certain degree of hardness, seal preservation through after the assay was approved, obtain 22% fentrazamide benzobicylon ethoxysulfuron effervescent agent.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. had to higher preventive effect, every mu of ground consumption 70-110 gram, directly spread fertilizer over the fields after pouring water in rice field, and preventive effect is 80-82%.
Embodiment 14:18% fentrazamide benzobicylon ethoxysulfuron (1:4:1) effervescent agent
Take 3% fentrazamide, 12% benzobicylon, 3% ethoxysulfuron, 5% fatty alcohol-polyoxyethylene ether, 6% naphthalenesulfonate formaldehyde condensation compound, 13% succinic acid, 12% sodium carbonate, 3.5% talcum powder, 2% polyvinyl alcohol, 20% diatomite, kaolin and supply 100%.Above-mentioned raw materials is mixed in blender, after ultra micro air-flow crushing, mix, adding absolute ethyl alcohol mediates again, then carry out extruder grain, dry, sieve, obtain the granular formulations of certain degree of hardness, seal preservation through after the assay was approved, obtain 18% fentrazamide benzobicylon ethoxysulfuron effervescent agent.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. had to higher preventive effect, every mu of ground consumption 100-140 gram, directly spread fertilizer over the fields after pouring water in rice field, and preventive effect is 80-82%.
Embodiment 15:14% fentrazamide benzobicylon ethoxysulfuron (1:2:4) effervescent agent
Take 2% fentrazamide, 4% benzobicylon, 8% ethoxysulfuron, 4% alkylnaphthalene sulfonate, 6% sodium lignin sulfonate, 12% hexanedioic acid, 14% sodium bicarbonate, 3% dolomol, 5% starch, 20% diatomite, kaolin and supply 100%.Above-mentioned raw materials is mixed in blender, after ultra micro air-flow crushing, mix, adding absolute ethyl alcohol mediates again, then carry out extruder grain, dry, sieve, obtain the granular formulations of certain degree of hardness, seal preservation through after the assay was approved, obtain 14% fentrazamide benzobicylon ethoxysulfuron effervescent agent.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. had to higher preventive effect, every mu of ground consumption 120-160 gram, directly spread fertilizer over the fields after pouring water in rice field, and preventive effect is 92-95%.
Embodiment 16:48% fentrazamide benzobicylon ethoxysulfuron (1:3:2) suspending agent
Take 8% fentrazamide, 24% benzobicylon, 16% ethoxysulfuron, 3% OPEO, 7% naphthalene and alkylnaphthalene sulfonate formaldehyde condensation products, 1.5% xanthans, 5% ethylene glycol, 1% silicone defoaming agent, water complements to 100%.Above-mentioned raw materials is mixed and makes 48% fentrazamide benzobicylon ethoxysulfuron suspending agent through soybean dietary fiber
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. are had to higher preventive effect, every mu of ground consumption 40-55 gram, is watered 30-40 kilogram and sprays or mix soil and spread fertilizer over the fields, and preventive effect is 88-90%.
Embodiment 17:40% fentrazamide benzobicylon ethoxysulfuron (1:4:5) suspending agent
Take 4% fentrazamide, 16% benzobicylon, 20% ethoxysulfuron, 4% lauryl sodium sulfate, 6% sodium lignin sulfonate, 2.5% gel, 5% ethylene glycol, 1% silicone defoaming agent, water and complement to 100%.Above-mentioned raw materials is mixed and makes 40% fentrazamide benzobicylon ethoxysulfuron suspending agent through soybean dietary fiber.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. are had to higher preventive effect, every mu of ground consumption 50-70 gram, is watered 30-40 kilogram and sprays or mix soil and spread fertilizer over the fields, and preventive effect is 85-90%.
Embodiment 18:36% fentrazamide benzobicylon ethoxysulfuron (2:2:5) suspending agent
Take 8% fentrazamide, 8% benzobicylon, 20% ethoxysulfuron, 2.5% fatty alcohol-polyoxyethylene ether, 6% polycarboxylate, 1.5% xanthans, 5% ethylene glycol, 1.2% silicone defoaming agent, water and complement to 100%.Above-mentioned raw materials is mixed and makes 36% fentrazamide benzobicylon ethoxysulfuron suspending agent through soybean dietary fiber.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. are had to higher preventive effect, every mu of ground consumption 50-70 gram, is watered 30-40 kilogram and sprays or mix soil and spread fertilizer over the fields, and preventive effect is 88-92%.
Embodiment 19:27% fentrazamide benzobicylon ethoxysulfuron (2:3:4) suspending agent
Take 6% fentrazamide, 9% benzobicylon, 12% ethoxysulfuron, 4% fatty alcohol-polyoxyethylene ether, 6% sodium lignin sulfonate, 1.5% xanthans, 5% ethylene glycol, 1% silicone defoaming agent, water and complement to 100%.Above-mentioned raw materials is mixed and makes 27% fentrazamide benzobicylon ethoxysulfuron suspending agent through soybean dietary fiber.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. are had to higher preventive effect, every mu of ground consumption 60-90 gram, is watered 30-40 kilogram and sprays or mix soil and spread fertilizer over the fields, and preventive effect is 82-85%.
Embodiment 20:8% fentrazamide benzobicylon ethoxysulfuron (1:2:5) suspending agent
Take 1% fentrazamide, 2% benzobicylon, 5% ethoxysulfuron, 4% dioctyl sodium sulfosuccinate, 6% sodium lignin sulfonate, 1.5% xanthans, 3% gel, 5% ethylene glycol, 1% polyether-modified silicon defoaming agent, water and complement to 100%.Above-mentioned raw materials is mixed and makes 8% fentrazamide benzobicylon ethoxysulfuron suspending agent through soybean dietary fiber.
Application: be applicable to preventing and kill off of all weeds of paddy field, particularly barnyard grass, lady's-grass, moleplant seed, firefly Lin, convexutricle sedge herb, difformed galingale herb, cyperus iria etc. are had to higher preventive effect, every mu of ground consumption 200-300 gram, is watered 30-40 kilogram and sprays or mix soil and spread fertilizer over the fields, and preventive effect is 88-90%.
The raw embodiment 1 that surveys: the judgement of fentrazamide, benzobicylon and ethoxysulfuron synergistic effect
1, reagent agent: the former medicine of benzobicylon, the former medicine of fentrazamide, the former medicine of ethoxysulfuron.
Medicament adopts now with the current, and fentrazamide, benzobicylon and ethoxysulfuron adopt after dmso solution, add Tween 80 emulsifier, and the sample preparation of above-mentioned former medicine and three's different proportion is become to desired concn.
2, for examination weeds: grassy weed (barnyard grass, moleplant seed, lady's-grass), broad leaved weed (Monochoria vaginalis, Eclipta prostrata, Procumbent Falsepimpernel), seed is collected in sedge weed (firefly Lin, convexutricle sedge herb, difformed galingale herb) field, and germination rate is more than 90%.
Cultivation for examination weeds adopts indoor pot cultivation.Test is the test special soil that does not collect in medication plot with soil, get flowerpot of the same size, soil is filled to 2/3 At The Height, add water and treat soil complete wetting, the weed seed that vernalization in biochemical cultivation case is showed money or valuables one carries unintentionally is evenly placed in flowerpot, each approximately 100 of every basin, blinding 0.5-1cm is placed on cellar culture in greenhouse.
3, test method: establish 1 of blank test, all the other adopt 552 third type sprayers to carry out closed soil treatment to not unearthed target weeds, 35 kgs/acre of the spraying amounts of being watered.After processing, continue in room temperature to cultivate, keep soil moisture 100%, routine observation is respectively processed the upgrowth situation of weeds, the strain number of 30 days each weeds strain numbers after treatment of " Invest, Then Investigate " and check plot weeds.Press the abundant method of Sun Yun and calculate toxicity regression curve, ED
50value, correlation coefficient, co-toxicity coefficient, determine the most adaptive ratio.
Computing formula:
In formula: E---strain preventive effect;
C---contrast weeds acrial part weeds strain number;
T---process weeds acrial part weeds strain number.
In formula: ATI---mixture actual measurement toxicity index;
The ED of S---standard herbicide
50, unit is gram every mu of effective dose (g (a.i.)/mu);
The ED of M---mixture
50, unit is gram every mu of effective dose (g (a.i.)/mu).
TTI＝TI
A×P
A+TI
B×P
B…(3)
In formula: TTI---the theoretical toxicity index of mixture;
TI
a---A medicament toxicity index;
P
a---the percentage composition of A medicament in mixture, unit is percentage (%)
TI
b---B medicament toxicity index;
P
b---the percentage composition of B medicament in mixture, unit is percentage (%).
In formula: CTC---co-toxicity coefficient;
ATI---mixture actual measurement toxicity index;
The theoretical toxicity index of TTI---mixture.
Co-toxicity coefficient CTC >=120 of built agent show as synergistic effect; CTC≤80 show as antagonism; 80 < CTC < 120 show as summation action.
Table 1 fentrazamide, benzobicylon and the ethoxysulfuron virulence to paddy field weed
Shown by upper table Toxicity Determination result: the weight ratio of fentrazamide, benzobicylon and ethoxysulfuron is (1-2): (2-4): (1-5) time, paddy field main weeds is shown to good synergy or addition, when particularly three's weight ratio is 1:2:4, synergistic effect is the most obvious, co-toxicity coefficient CTC is 266.25, co-toxicity coefficient during apparently higher than other weight ratios, expand control of weeds general simultaneously, reached the object of simultaneously preventing and kill off paddy field grassy weed, broad leaved weed and sedge weed.
The raw embodiment 2 that surveys: prevent and kill off transplanting rice field weed field control effectiveness test
1, test objective: checking 14% safety of fentrazamide benzobicylon ethoxysulfuron (1:2:4) effervescent agent to transplant field paddy rice and the preventive effect to weeds in field.
2, experimental condition: field liquid manure abundance, soil organic matter content is high, and former years, the rice is doing well, and this plot main weeds has barnyard grass, lady's-grass, angustifolia arrowhead herb, Eclipta prostrata, Procumbent Falsepimpernel, convexutricle sedge herb, difformed galingale herb, firefly Lin etc.
3, experimental scheme: 7 processing are established in test, repeats for 4 times, 28 processing altogether, and 20 square metres of every processing community areas, random district group is arranged, and transplanting rice evenly spread fertilizer over the fields medicament toward water layer after 7 days, and but field must keep water layer can not flood the seedling heart.(1)-(3) are 14% fentrazamide benzobicylon ethoxysulfuron effervescent agent, and dosage is respectively 120,140,160g/ mu, directly spreads fertilizer over the fields; (4)-(6) are contrast medicament (street drug), spread fertilizer over the fields after mixing soil; (7) be blank (CK).
4, investigation and computational methods: every community is got 4 points at random, 1/4 square metre of every some investigation, investigates respectively the careless situation of going out of weeds in after dispenser 15 days and 40 days, and that records respectively weeds goes out grass seeds class and quantity, calculates weeds strain preventive effect, and the formula of calculating strain preventive effect is as follows:
Preventive effect (%)=[(check plot weeds strain number-treatment region weeds strain number)/check plot weeds strain number] × 100
5, results and analysis
1. the safety to paddy rice: there is no obvious symptom of chemical damage with the paddy rice of observing respectively each chemicals treatment for 40 days compared with blank in after dispenser 15 days, the rice is doing well.
2. herbicidal effect sees the following form:
15 days preventive effects to transplanting rice field weed after table 2 medicine
40 days preventive effects to transplanting rice field weed after table 3 medicine
Table 2, table 3 experimental result show: after 14% fentrazamide benzobicylon ethoxysulfuron effervescent agent medicine, 15 days grassy weed, broad leaved weed, sedge weeds to paddy field all have significant preventive effect, in low dosage 120g/ mu situation, the main weeds preventive effect of paddy field are reached more than 85%; Along with the increase of consumption, preventive effect obviously improves, and in high dose 160g/ mu situation, the main weeds preventive effect of paddy field is reached more than 90%; Preventive effect to barnyard grass, convexutricle sedge herb, firefly Lin, difformed galingale herb has reached 100%.Along with this medicament of growth of time after dispenser decreases to the preventive effect of paddy field weed, within after medicine 40 days, in low dosage 120g/ mu situation, the main weeds preventive effect of paddy field is reached more than 80%; In high dose 160g/ mu situation, the main weeds preventive effect of paddy field is reached more than 85%, still can prevent and kill off all weeds in paddy field.
The raw embodiment 3 that surveys: prevent and kill off direct seading rice field weed field control effectiveness test
1, test objective: checking 36% safety of fentrazamide benzobicylon ethoxysulfuron (2:2:5) suspending agent to live water in field rice and the preventive effect to weeds in field.
2, experimental condition: the rice is doing well in field, and soil organic matter content is high, this plot main weeds has barnyard grass, lady's-grass, angustifolia arrowhead herb, Eclipta prostrata, Procumbent Falsepimpernel, convexutricle sedge herb, difformed galingale herb, firefly Lin etc.
3, experimental scheme: 7 processing are established in test, repeats for 4 times, 28 processing altogether, and 20 square metres of every processing community areas, random district group is arranged.(1)-(3) are 36% fentrazamide benzobicylon ethoxysulfuron suspending agent, and dosage is respectively 50,60,70g/ mu; (4)-(6) are contrast medicament (street drug); (7) be blank (CK), be watered 35 kgs/acre, even spraying processing.
4, investigation and computational methods: every community is got 4 points at random, 1/4 square metre of every some investigation, investigates respectively the careless situation of going out of weeds in after dispenser 15 days and 40 days, and that records respectively weeds goes out grass seeds class and quantity, calculates weeds strain preventive effect, and the formula of calculating strain preventive effect is as follows:
Preventive effect (%)=[(check plot weeds strain number-treatment region weeds strain number)/check plot weeds strain number] × 100
5, results and analysis
1. the safety to paddy rice: there is no obvious symptom of chemical damage with the paddy rice of observing respectively each chemicals treatment for 40 days compared with blank in after dispenser 15 days, the rice is doing well.
2. herbicidal effect sees the following form:
15 days preventive effects to direct seading rice field weed after table 4 medicine
40 days preventive effects to direct seading rice field weed after table 5 medicine
Table 4, table 5 experimental result show: after 36% fentrazamide benzobicylon ethoxysulfuron suspending agent medicine, 15 days grassy weed, broad leaved weed, sedge weeds to paddy field all have significant preventive effect, in low dosage 50g/ mu situation, the main weeds preventive effect of paddy field are reached more than 80%; Along with the increase of consumption, preventive effect obviously improves, and in high dose 70g/ mu situation, the main weeds preventive effect of paddy field is reached more than 88%.Along with this medicament of growth of time after dispenser decreases to the preventive effect of paddy field weed, within after medicine 40 days, in low dosage 50g/ mu situation, the main weeds preventive effect of paddy field is reached more than 75%, in high dose 70g/ mu situation, the main weeds preventive effect of paddy field is reached more than 80%, still can prevent and kill off all weeds in paddy field.
In sum, component of the present invention is reasonable, effect when preventive effect is better than each component and uses separately, and synergistic effect is obvious, and the lasting period is long, and working life is wide, has expanded the control spectrum of weeds.The mixture of three kinds of medicaments has solved paddy field malignant weed for a long time and has been difficult to control and the more and more serious problem of resistant weed, and barnyard grass is had to special efficacy, and this herbicidal composition is high to Security of rice simultaneously.
Claims (5)
1. the herbicidal composition of a paddy field, it is characterized in that: active ingredient consists of fentrazamide, benzobicylon and ethoxysulfuron, wherein the weight ratio of fentrazamide, benzobicylon and ethoxysulfuron is (1-2): (2-4): (1-5).
2. the herbicidal composition of a kind of paddy field according to claim 1, is characterized in that: the weight ratio of fentrazamide, benzobicylon and ethoxysulfuron is 1:2:4.
3. the herbicidal composition of a kind of paddy field according to claim 1, is characterized in that: the total amount of active ingredient fentrazamide, benzobicylon and ethoxysulfuron accounts for the 8%-80% of weed killer herbicide total content.
4. according to the herbicidal composition of a kind of paddy field described in any one in right 1-3, it is characterized in that: described combination dosage form is wetting powder, water dispersible granules, effervescent agent, suspending agent.
5. a kind of herbicide composition for paddy fields according to claim 1 is in the application of preventing and kill off in direct seading rice field, transplanting rice field grassy weed, broad leaved weed and sedge weed.
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| CN201410158091.1A CN103907631A (en) | 2014-04-19 | 2014-04-19 | Herbicide composite for rice field |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107136110A (en) * | 2017-06-08 | 2017-09-08 | 南京红太阳股份有限公司 | A kind of Herbicidal combinations and its application containing the bicyclic ketone of benzo and ethoxysulfuron |
| CN108244134A (en) * | 2018-04-25 | 2018-07-06 | 佛山市盈辉作物科学有限公司 | A kind of Herbicidal combinations containing benzobicylon, fentrazamide and anilofos |
-
2014
- 2014-04-19 CN CN201410158091.1A patent/CN103907631A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107136110A (en) * | 2017-06-08 | 2017-09-08 | 南京红太阳股份有限公司 | A kind of Herbicidal combinations and its application containing the bicyclic ketone of benzo and ethoxysulfuron |
| CN108244134A (en) * | 2018-04-25 | 2018-07-06 | 佛山市盈辉作物科学有限公司 | A kind of Herbicidal combinations containing benzobicylon, fentrazamide and anilofos |
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