CN105265464A - Weeding composition containing pyrithiobac-sodium, oxyfluorfen and sulfonylurea herbicide - Google Patents

Weeding composition containing pyrithiobac-sodium, oxyfluorfen and sulfonylurea herbicide Download PDF

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CN105265464A
CN105265464A CN201510746584.1A CN201510746584A CN105265464A CN 105265464 A CN105265464 A CN 105265464A CN 201510746584 A CN201510746584 A CN 201510746584A CN 105265464 A CN105265464 A CN 105265464A
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oxyfluorfen
kih
pyrazosulfuron
sulfonylurea herbicide
sodium
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张志伟
刘鹏
冷忠国
陈佛祥
朱刚
王礼文
吴泽伟
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Guangdong Zhongxun Agri Science Corp
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Guangdong Zhongxun Agri Science Corp
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Abstract

The invention discloses a weeding composition containing pyrithiobac-sodium, oxyfluorfen and a sulfonylurea herbicide. The effective components are the pyrithiobac-sodium, the oxyfluorfen and the sulfonylurea herbicide. The weight ratio of the pyrithiobac-sodium to the oxyfluorfen to the sulfonylurea herbicide is 1-20:1-40:1-50. The sulfonylurea herbicide is one of metazosulfuron and pyrazosulfuron. The weeding composition has the remarkable synergistic effect and is applicable to prevention and removal of annual weed in rice paddies. Compared with the using effects of individually used mono-agents, the weeding effect is obviously improved, a weeding spectrum is widened, meanwhile the using amount of pesticides is reduced, environmental pollution is reduced, production of pesticide resistance of weed is delayed, and the service life of the pesticides is prolonged.

Description

Herbicidal combinations containing KIH 6127 and Oxyfluorfen and sulfonylurea herbicide
Technical field
The present invention relates to agricultural chemicals Herbicidal combinations and application thereof, specifically a kind of Herbicidal combinations that is active ingredient with KIH 6127, Oxyfluorfen and sulfonylurea herbicide, is mainly used in the control of paddy field weed.
Background technology
KIH 6127 (pyriminobac-methyl), belong to pyrimidinylthiobenzoate herbicides, it can by the cauline leaf of weeds and root absorption, and conduct to complete stool rapidly, suppress acetolactate synthestase and amino acid whose biosynthesis, thus suppress and hinder the cell division in weeds bodies, weeds are stopped growing, finally makes weeds albefaction and withered.To barnyard grass in paddy field, there is special efficacy, very safe to paddy rice.
Oxyfluorfen (oxyfluorfen) is contact killing type weed killer herbicide, and medicament enters in weeds body mainly through coleoptile, mesocotyl, kills by the young shoot of the weeds of seminal propagation and seedling.This medicament broad weed-killing spectrum, multiple broad leaved weed, sedge weed and grassy weed can be prevented and kill off, as difformed galingale herb, barnyard grass, moleplant seed, needle spikesedge herb, Monochoria vaginalis, water three-coloured amaranth, cyperus iria, sweet wine intestines, dichotomous fimbristylis herb, four leaf duckweeds, false loosestrife, firefly Lin, pondweed, mexicana, short arrowhead, Procumbent Falsepimpernel etc.
Piperazine pyrazosulfuron (metazosulfuron), belong to sulfonylurea herbicide, outstanding to the control efficiency of the weeds such as Monochoria korsakowii, Monochoria vaginalis, mexicana, Procumbent Falsepimpernel, bur beggar-ticks, sweet wine intestines, pondweed, difformed galingale herb, barnyard grass, needle spikesedge herb, Fischer grass.
Pyrazosulfuron (pyrazosulfuron-ethyl), belongs to sulfonylurea herbicide, is selectivity inner-adsorption conduction-type herbicide, is absorbed mainly through root system, and shift rapidly in weeds plant body, Developing restraint, weeds are dead gradually.Can be used for preventing and kill off annual and perennial broadleaf weed and sedge weed, as different in nature nutgrass flatsedge, Herba Cyperi Glomerati, firefly Lin, Monochoria vaginalis, Chinese celery, mexicana, angustifolia arrowhead herb, pondweed, blue or green duckweed, Eclipta prostrata.The grassy weed barnyard grass main to rice field and moleplant seed weak effect.Paddy rice can decompose this medicament, does not almost affect paddy growth.
Chemical method weeding is agriculturally one of Main Means controlling weeds in field.In recent years, because the large area of some weed killer herbicide kinds is used alone, many weeds have been caused to create pesticide resistance; Meanwhile, because grass when weeds in field occurs is complicated, of a great variety mutually, as the mixing such as grassy weed, sedge weed and broad leaved weed occur, the weed killer herbicide of single variety uses and cannot effectively solve the problem, and all can show defect in a certain respect.
By the screening that different mixture of herbicides is filled a prescription, filter out rational formula, effectively can improve the actual control efficiency to weeds, expand herbicide spectrum, reduce dosage, reduce costs, alleviate the pollution to environment, delay the generation of herbicide resistance, extending the Pesticide use life-span, is the important means of the agriculturally weeds comprehensive regulation.
Summary of the invention
The object of the present invention is to provide a kind of there is synergistic function, expand herbicide spectrum, low, the control efficiency of use cost is good containing KIH 6127 and Oxyfluorfen and sulfonylurea herbicide Herbicidal combinations.
The technical scheme realizing the object of the invention is: Herbicidal combinations of the present invention is with KIH 6127 and Oxyfluorfen and Bing Que Evil humulone for active ingredient, and the weight ratio of KIH 6127, Oxyfluorfen, sulfonylurea herbicide is 1 ~ 20:1 ~ 40:1 ~ 50; Described sulfonylurea herbicide is selected from the one in piperazine pyrazosulfuron or pyrazosulfuron.
Herbicidal combinations of the present invention is applicable to by selecting suitable pesticidal preparations auxiliary element to be prepared into the multiple application forms that agriculturally uses, and reasonable formulation has granule, dispersibles oil-suspending agent, suspending agent, microemulsion, wetting powder, water dispersible granules, effervescent tablet and aqueous emulsion.
Described auxiliary element comprises solvent, emulsifier, wetting agent, dispersant, antifreezing agent, thickener, disintegrant, binding agent, defoamer, stabilizing agent, bleeding agent, synergist, solid acid, carbonate, flowing regulator, liquid-carrier and solid carrier etc., it is all composition that is conventional in pesticidal preparations or permission use, be not particularly limited, concrete composition and consumption are determined by simple test according to recipe requirements.
The production technology of the various application forms of described Herbicidal combinations all belongs to existing known technology, does not repeat them here.
Compared with prior art, the invention has the advantages that:
1, KIH 6127, Oxyfluorfen and sulfonylurea herbicide ternary built, have significant synergistic function, is used alone the control efficiency significantly improved weeds than each single dose, and expand herbicide spectrum.
2, KIH 6127, Oxyfluorfen and sulfonylurea herbicide ternary built, the mechanism of action is different, and action site increases, and can delay the generation of herbicide resistance, extends the Pesticide use life-span.
3, KIH 6127, Oxyfluorfen and sulfonylurea herbicide ternary built, decrease Pesticide use amount, reduces use cost, alleviates pollution to environment.
Embodiment
In order to understand essence of the present invention better; below in conjunction with embodiment, content of the present invention is described further; but can not limitation of the present invention be considered as; the following stated is only for explaining the present invention; for not departing from amendment that the present invention's spirit and principle make, replacement or improvement, all belong to the scope of protection of present invention.
In following each embodiment, active ingredient adopts the former medicine of 97% KIH 6127, the former medicine of 97% Oxyfluorfen, the former medicine of 91% piperazine pyrazosulfuron and the former medicine of 97% pyrazosulfuron, and each component percentages is weight percentage.
Embodiment 1:75% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron water dispersible granule.
KIH 6127 15%, Oxyfluorfen 20%, piperazine pyrazosulfuron 40%, lauryl sodium sulfate 5%, aliphatic acid polyethenoxy ether 5%, sodium methylene bis-naphthalene sulfonate formaldehyde condensation products 5%, bentonite 3%, hydroxypropyl cellulose 2%, diatomite supplies 100%.Above-mentioned active component, wetting agent, dispersant, disintegrant, binding agent and solid carrier are mixed, pulverize with micro jet, through mediating, then add in fluidized-bed granulation dryer and carry out granulation, drying, screening, 75% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron water dispersible granule can be obtained.
Embodiment 2:70% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron wetting powder.
KIH 6127 15%, Oxyfluorfen 15%, piperazine pyrazosulfuron 40%, calcium dodecyl benzene sulfonate 10%, fatty acid glyceride APEO 10%, kaolin supplies 100%.Above-mentioned active component, wetting agent, dispersant and solid carrier are mixed, again through air-flow crushing after mechanical crushing, mixes, 70% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron wetting powder can be obtained.
Embodiment 3:30% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron dispersibles oil-suspending agent.
KIH 6127 5%, Oxyfluorfen 10%, piperazine pyrazosulfuron 15%, isopropyl naphthalene sulfonate 10%, polycarboxylate 5%, alkylnaphthalene sulfonate condensation polymer 10%, polyvinyl alcohol 2%, methyl oleate supplies 100%.By above-mentioned active component, wetting agent, dispersant, thickener and liquid-carrier after sand milling in high speed shear dispersion, sand mill, the high dispersive formed in non-water-medium, stable suspension system, can obtain 30% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron and dispersible oil-suspending agent.
Embodiment 4:40% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron microemulsion.
KIH 6127 10%, Oxyfluorfen 10%, piperazine pyrazosulfuron 20%, cyclohexanone 10%, methyl naphthalene 10%, castor oil polyoxyethylene ether 10%, epoxidized soybean oil 3%, organosilicon 1%, azone 2%, Sodium Benzoate 0.1%, glycerine 2%, deionized water supplies 100%.Active component solvent is dissolved completely, and then add emulsifier, stabilizing agent, bleeding agent, synergist, preservative, antifreezing agent mix, finally add deionized water, after fully stirring, 40% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron microemulsion can be obtained.
Embodiment 5:30% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron effervescent tablet.
KIH 6127 8%, Oxyfluorfen 7%, piperazine pyrazosulfuron 15%, lauryl sodium sulfate 5%, lauric acid sodium sulphate 5%, low-substituted hydroxypropyl cellulose 2%, sulfamic acid 15%, sodium carbonate 15%, dolomol 5%, dextrin 2%, kaolin complements to 100%.Above-mentioned active component, wetting agent, dispersant, disintegrant, solid acid, carbonate, flowing regulator, binding agent and solid carrier are fully mixed, then 0.3-5 μm is crushed to the broken machine of low-temperature submicron powder, then the binding agent with water furnishing pasty state is added, tablet press machine film-making is used after stirring, finally by oven dry, whole grain, detect, pack after, 30% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron effervescent tablet can be obtained.
Embodiment 6:45% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron aqueous emulsion.
KIH 6127 5%, Oxyfluorfen 15%, piperazine pyrazosulfuron 25%, benzyl dimethyl phenol polyoxyethyl ether 20%, cyclohexanone 10%, durene 5%, propane diols 2%, silicone oil 0.5%, carboxymethyl cellulose 0.3%, deionized water complements to 100%.First by active component, emulsifier, solvent together, dissolving becomes uniform oil phase.Then again part water and antifreezing agent, defoamer, thickener are mixed, dissolve and become uniform aqueous phase.Then aqueous phase is joined oil phase while high-speed stirred in a kettle., slowly add water to and reach phase inversion point, carry out high speed shear afterwards, and add remaining water, shear about 30min, 45% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron aqueous emulsion can be obtained.
Embodiment 7:24% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron suspending agent.
KIH 6127 4%, Oxyfluorfen 10%, piperazine pyrazosulfuron 10%, fatty acid glyceride APEO 10%, ethyoxyl triphenylethylene phenol phosphate 10%, isopropyl naphthalene sulfonate 10%, aluminium-magnesium silicate 2%, glycerine 2%, silicone compound 0.1%, deionized water supplies 100%.Above-mentioned active component, dispersant, wetting agent, thickener, antifreezing agent, defoamer and deionized water are mixed, sand milling in high speed shear dispersion, sand mill, the high dispersive formed in water-medium, stable suspension system, can obtain 24% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron suspending agent.
Embodiment 8:10% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron granule.
KIH 6127 2%, Oxyfluorfen 3%, piperazine pyrazosulfuron 5%, sodium butylnaphthalenesulfonate 12%, alkylphenol polyoxyethylene formaldehyde condensation products sulphate 15%, polyvinyl methyl ethermaleic anhydride 2%, hydroxypropyl cellulose 20%, kaolin complements to 100%.Above-mentioned active component, wetting agent, dispersant, sustained release agent, binding agent and solid carrier are mediated through mixing and water adding; pinch-out granulator is used to pinch out and be shaped; afterwards by particle fluid-bed drying, screening, 10% KIH 6127 Oxyfluorfen piperazine pyrazosulfuron granule can be obtained.
Embodiment 9:47% KIH 6127 Oxyfluorfen pyrazosulfuron water dispersible granule.
The acid of KIH 6127 15%, Oxyfluorfen 20%, pyrazosulfuron 12%, neopelex 10%, flax/polypropylene sodium 10%, sodium methylene bis-naphthalene sulfonate formaldehyde condensation products 5%, bentonite 3%, hydroxypropyl cellulose 2%, attapulgite supplies 100%.Above-mentioned active component, wetting agent, dispersant, disintegrant, binding agent and solid carrier are mixed, pulverize with micro jet, through mediating, then add in fluidized-bed granulation dryer and carry out granulation, drying, screening, 47% KIH 6127 Oxyfluorfen pyrazosulfuron water dispersible granule can be obtained.
Embodiment 10:80% KIH 6127 Oxyfluorfen pyrazosulfuron wetting powder.
KIH 6127 20%, Oxyfluorfen 40%, pyrazosulfuron 20%, calcium dodecyl benzene sulfonate 10%, alkylphenol-polyethenoxy base ether formaldehyde condensation products 5%, diatomite supplies 100%.Above-mentioned active component, wetting agent, dispersant and solid carrier are mixed, again through air-flow crushing after mechanical crushing, mixes, 80% KIH 6127 Oxyfluorfen pyrazosulfuron wetting powder can be obtained.
Embodiment 11:20% KIH 6127 Oxyfluorfen pyrazosulfuron dispersibles oil-suspending agent.
The acid of KIH 6127 8%, Oxyfluorfen 10%, pyrazosulfuron 2%, isopropyl naphthalene sulfonate 10%, flax/polypropylene sodium 5%, alkylnaphthalene sulfonate condensation polymer 10%, xanthans 2%, methylated vegetable oil supplies 100%.By above-mentioned active component, wetting agent, dispersant, thickener and liquid-carrier after sand milling in high speed shear dispersion, sand mill, the high dispersive formed in non-water-medium, stable suspension system, can obtain 20% KIH 6127 Oxyfluorfen pyrazosulfuron and dispersible oil-suspending agent.
Embodiment 12:40% KIH 6127 Oxyfluorfen pyrazosulfuron microemulsion.
KIH 6127 15%, Oxyfluorfen 15%, pyrazosulfuron 10%, cyclohexanone 10%, 2-butyl acetate 10%, castor oil polyoxyethylene ether 10%, epoxychloropropane 3%, organosilicon 1%, azone 2%, Sodium Benzoate 0.1%, glycerine 2%, deionized water supplies 100%.Active component solvent is dissolved completely, and then add emulsifier, stabilizing agent, bleeding agent, synergist, preservative, antifreezing agent mix, finally add deionized water, after fully stirring, 40% KIH 6127 Oxyfluorfen pyrazosulfuron microemulsion can be obtained.
Embodiment 13:30% KIH 6127 Oxyfluorfen pyrazosulfuron effervescent tablet.
KIH 6127 12%, Oxyfluorfen 13%, pyrazosulfuron 5%, lauryl sodium sulfate 5%, polycarboxylate 5%, low-substituted hydroxypropyl cellulose 2%, citric acid 15%, sodium carbonate 15%, dolomol 5%, dextrin 2%, kaolin complements to 100%.Above-mentioned active component, wetting agent, dispersant, disintegrant, solid acid, carbonate, flowing regulator, binding agent and solid carrier are fully mixed, then 0.3-5 μm is crushed to the broken machine of low-temperature submicron powder, then the binding agent with water furnishing pasty state is added, tablet press machine film-making is used after stirring, finally by oven dry, whole grain, detect, pack after, 30% KIH 6127 Oxyfluorfen pyrazosulfuron effervescent tablet can be obtained.
Embodiment 14:45% KIH 6127 Oxyfluorfen pyrazosulfuron aqueous emulsion.
KIH 6127 15%, Oxyfluorfen 25%, pyrazosulfuron 5%, phenethyl phenol polyethenoxy ether 20%, cyclohexanone 10%, trimethylbenzene 5%, propane diols 2%, silicone oil 0.5%, polyvinyl alcohol 0.3%, deionized water complements to 100%.First by active component, emulsifier, solvent together, dissolving becomes uniform oil phase.Then again part water and antifreezing agent, defoamer, thickener are mixed, dissolve and become uniform aqueous phase.Then aqueous phase is joined oil phase while high-speed stirred in a kettle., slowly add water to and reach phase inversion point, carry out high speed shear afterwards, and add remaining water, shear about 30min, 45% KIH 6127 Oxyfluorfen pyrazosulfuron aqueous emulsion can be obtained.
Embodiment 15:24% KIH 6127 Oxyfluorfen pyrazosulfuron suspending agent.
KIH 6127 10%, Oxyfluorfen 10%, pyrazosulfuron 4%, sodium methylene bis-naphthalene sulfonate formaldehyde condensation products 10%, ethyoxyl triphenylethylene phenol phosphate 10%, isopropyl naphthalene sulfonate 10%, aluminium-magnesium silicate 2%, glycerine 2%, silicone oil 0.1%, deionized water supplies 100%.Above-mentioned active component, dispersant, wetting agent, thickener, antifreezing agent, defoamer and deionized water are mixed, sand milling in high speed shear dispersion, sand mill, the high dispersive formed in water-medium, stable suspension system, can obtain 24% KIH 6127 Oxyfluorfen pyrazosulfuron suspending agent.
Embodiment 16:10% KIH 6127 Oxyfluorfen pyrazosulfuron granule.
KIH 6127 5%, Oxyfluorfen 3%, pyrazosulfuron 2%, sodium butylnaphthalenesulfonate 12%, polyoxyethylene aryl ether 15%, polyvinyl methyl ethermaleic anhydride 2%, hydroxypropyl cellulose 20%, diatomite complements to 100%.Above-mentioned active component, wetting agent, dispersant, sustained release agent, binding agent and solid carrier are mediated through mixing and water adding; pinch-out granulator is used to pinch out and be shaped; afterwards by particle fluid-bed drying, screening, 10% KIH 6127 Oxyfluorfen pyrazosulfuron granule can be obtained.
Embodiment 17: indoor biological determination of activity.
1, KIH 6127, Oxyfluorfen and piperazine pyrazosulfuron ternary built are tested the Toxicity Determination of paddy field weed
Reagent agent: the former medicine of 97% KIH 6127, the former medicine of 97% Oxyfluorfen and the former medicine of 91% piperazine pyrazosulfuron.
For examination target: Monochoria vaginalis (Monochoriavaginalis), barnyard grass (Echinochloacrusgalli), difformed galingale herb (CyperusdifformisL.).
Medicament configuration design: KIH 6127 single dose is configured to 5,10,15ga.i./ha solution for standby, Oxyfluorfen single dose is configured to 10,20,30ga.i./ha solution for standby, piperazine pyrazosulfuron single dose is configured to 10,25,40ga.i./ha solution for standby, KIH 6127, Oxyfluorfen and piperazine pyrazosulfuron mixture are configured to 5+10+10, 5+10+25, 5+10+40, 5+20+10, 5+20+25, 5+20+40, 5+30+10, 5+30+25, 5+30+40, 10+10+10, 10+10+25, 10+10+40, 10+20+10, 10+20+25, 10+20+40, 10+30+10, 10+30+25, 10+30+40, 15+10+10, 15+10+25, 15+10+40, 15+20+10, 15+20+25, 15+20+40, 15+30+10, 15+30+25, 15+30+40ga.i./ha solution for standby.
Test method: adopt soil drench (NY/T1155.5-2006): be 0.01m at area 2the in-built quantitative soil of basin alms bowl to 3/4 place of basin alms bowl, then water from the top of basin alms bowl, make soil completely moistening to saturation state.Evenly will sow at basin alms bowl soil surface for examination target weed seed 15 ~ 20, and be placed in greenhouse after the fine earth according to seed size lid 0.5 ~ 2cm and cultivate.After 24h, every basin alms bowl quantitatively waters liquid 10ml, often processes 4 times and repeats, and sets the process not containing medicament as contrasting, and after process, examination material is placed in cultivation in greenhouse, and the growing state of routine observation target weeds, duration of test respectively processes basin alms bowl and remains 1 ~ 2cm water layer.Estimate target damage symptoms and growth inhibition situation after 20d, and claim acrial part fresh weight, evaluate medicament to the toxicity action of target weeds with target fresh weight inhibition.
Investigation method: estimate target damage symptoms and growth inhibition situation after test process 20d, and claim acrial part fresh weight, calculate fresh weight inhibition (%).
Synergy evaluation method: evaluate weed killer herbicide mode of application (NY/T1155.7-2006) according to Colby method, its formula is: E 0=X × Y × Z/100 2, in formula, X be KIH 6127 alone with certain dosage time be the percentage of contrast to the fresh weight inhibition of target weeds; Y be Oxyfluorfen alone with certain dosage time be the percentage of contrast to the fresh weight inhibition of target weeds; Z be piperazine pyrazosulfuron alone with certain dosage time be the percentage of contrast to the fresh weight inhibition of target weeds; E 0for when KIH 6127, Oxyfluorfen and piperazine pyrazosulfuron three kinds of pharmacy mix to target weeds fresh weight inhibition being the theoretical value of the percentage contrasted; E is KIH 6127, Oxyfluorfen and piperazine pyrazosulfuron three kinds of pharmacy mix time be the measured value of percentage of contrast to target weeds fresh weight inhibition.
Evaluation criterion: work as E 0synergistic effect is expressed as, as-10%≤E during-E>10% 0be expressed as summation action during-E≤10%, work as E 0antagonism is expressed as during-E<-10%.
Table 1, each chemicals treatment are to the Toxicity Determination result of Monochoria vaginalis.
Table 2, each chemicals treatment are to the Toxicity Determination result of barnyard grass
Table 3, each chemicals treatment are to the Toxicity Determination result of difformed galingale herb
As can be seen from the Toxicity Determination result of table 1, table 2 and table 3, KIH 6127, Oxyfluorfen and piperazine pyrazosulfuron Ternary respectively process the E to Monochoria vaginalis, barnyard grass and difformed galingale herb 0-E (%) value is all greater than 10%, and more than 20%, illustrate that the composite use of three all has significant synergistic function to Monochoria vaginalis, barnyard grass and difformed galingale herb, especially the synergistic function that combines with 15+20+40 Ternary of KIH 6127, Oxyfluorfen and piperazine pyrazosulfuron is the most remarkable.As can be seen here, KIH 6127, Oxyfluorfen and piperazine pyrazosulfuron Ternary have reasonability and feasibility.
2, KIH 6127, Oxyfluorfen and pyrazosulfuron ternary built are tested the Toxicity Determination of paddy field weed
Reagent agent: the former medicine of 97% KIH 6127, the former medicine of 97% Oxyfluorfen and the former medicine of 97% pyrazosulfuron.
For examination target: Monochoria vaginalis (Monochoriavaginalis), barnyard grass (Echinochloacrusgalli), difformed galingale herb (CyperusdifformisL.).
Medicament configuration design: KIH 6127 single dose is configured to 5,10,15ga.i./ha solution for standby; Oxyfluorfen single dose is configured to 10,20,30ga.i./ha solution for standby; Pyrazosulfuron single dose is configured to 4,8,12ga.i./ha solution for standby; KIH 6127, Oxyfluorfen and pyrazosulfuron mixture are configured to 5+10+4,5+10+8,5+10+12,5+20+4,5+20+8,5+20+12,5+30+4,5+30+8,5+30+12,10+10+4,10+10+8,10+10+12,10+20+4,10+20+8,10+20+12,10+30+4,10+30+8,10+30+12,15+10+4,15+10+8,15+10+12,15+20+4,15+20+8,15+20+12,15+30+4,15+30+8,15+30+12ga.i./ha solution for standby.
Test method: adopt soil drench (NY/T1155.5-2006): be 0.01m at area 2the in-built quantitative soil of basin alms bowl to 3/4 place of basin alms bowl, then water from the top of basin alms bowl, make soil completely moistening to saturation state.Evenly will sow at basin alms bowl soil surface for examination target weed seed 15 ~ 20, and be placed in greenhouse after the fine earth according to seed size lid 0.5 ~ 2cm and cultivate.After 24h, every basin alms bowl quantitatively waters liquid 10ml, often processes 4 times and repeats, and sets the process not containing medicament as contrasting, and after process, examination material is placed in cultivation in greenhouse, and the growing state of routine observation target weeds, duration of test respectively processes basin alms bowl and remains 1 ~ 2cm water layer.Estimate target damage symptoms and growth inhibition situation after 20d, and claim acrial part fresh weight, evaluate medicament to the toxicity action of target weeds with target fresh weight inhibition.
Investigation method: estimate target damage symptoms and growth inhibition situation after test process 20d, and claim acrial part fresh weight, calculate fresh weight inhibition (%).
Synergy evaluation method: evaluate weed killer herbicide mode of application (NY/T1155.7-2006) according to Colby method, its formula is: E 0=X × Y × Z/100 2, in formula, X be KIH 6127 alone with certain dosage time be the percentage of contrast to the fresh weight inhibition of target weeds; Y be Oxyfluorfen alone with certain dosage time be the percentage of contrast to the fresh weight inhibition of target weeds; Z be pyrazosulfuron alone with certain dosage time be the percentage of contrast to the fresh weight inhibition of target weeds; E 0for during KIH 6127, Oxyfluorfen and pyrazosulfuron three kinds of pharmacy mix to target weeds fresh weight inhibition being the theoretical value of the percentage contrasted; Be the measured value of the percentage of contrast to target weeds fresh weight inhibition when E is KIH 6127, Oxyfluorfen and pyrazosulfuron three kinds of pharmacy mix.
Evaluation criterion: work as E 0synergistic effect is expressed as, as-10%≤E during-E>10% 0be expressed as summation action during-E≤10%, work as E 0antagonism is expressed as during-E<-10%.
Table 4, each chemicals treatment are to the Toxicity Determination result of Monochoria vaginalis.
Table 5, each chemicals treatment are to the Toxicity Determination result of barnyard grass
Table 6, each chemicals treatment are to the Toxicity Determination result of difformed galingale herb
As can be seen from the Toxicity Determination result of table 4, table 5 and table 6, KIH 6127, Oxyfluorfen and pyrazosulfuron Ternary respectively process the E to Monochoria vaginalis, barnyard grass and difformed galingale herb 0-E (%) value is all greater than 10%, and more than 20%, illustrate that the composite use of three all has significant synergistic function to Monochoria vaginalis, barnyard grass and difformed galingale herb, especially the synergistic function that combines with 15+20+12 Ternary of KIH 6127, Oxyfluorfen and pyrazosulfuron is the most remarkable.As can be seen here, KIH 6127, Oxyfluorfen and pyrazosulfuron Ternary have reasonability and feasibility.
Embodiment 18: field control effectiveness test.
1, KIH 6127, Oxyfluorfen and piperazine pyrazosulfuron ternary built are to the field control effectiveness test of paddy field weed
Experimental field select paddy field to carry out, often 3 repetitions are established in process, within after medicine 30 days, add up each process number of weeds amount and calculate preventive effect.
Table 7, each chemicals treatment prevent and kill off the field control effectiveness test result of paddy field weed
As can be seen from the field test results of table 7, after medicine, the preventive effect of 30 days each ternary recompounded composites to weeds such as the Monochoria vaginalis of paddy field, short arrowhead, barnyard grass, moleplant seed, difformed galingale herb and firefly Lins is all obviously higher than each single dose and is used alone, and does not find that each ternary recompounded composite produces poisoning to paddy rice in pilot survey process simultaneously.
2, KIH 6127, Oxyfluorfen and pyrazosulfuron ternary built are to the field control effectiveness test of paddy field weed
Experimental field select paddy field to carry out, often 3 repetitions are established in process, within after medicine 30 days, add up each process number of weeds amount and calculate preventive effect.
Table 8, each chemicals treatment prevent and kill off the field control effectiveness test result of paddy field weed
As can be seen from the field test results of table 8, after medicine, the preventive effect of 30 days each ternary recompounded composites to weeds such as the Monochoria vaginalis of paddy field, short arrowhead, barnyard grass, moleplant seed, difformed galingale herb and firefly Lins is all obviously higher than each single dose and is used alone, and does not find that each ternary recompounded composite produces poisoning to paddy rice in pilot survey process simultaneously.
In sum, Herbicidal combinations obvious synergy of the present invention, compare each single dose be used alone expand herbicide spectrum, improve preventive effect, effectively can prevent and kill off the various weeds of paddy field, to rice safety, be worth applying in agricultural production.

Claims (4)

1. contain a Herbicidal combinations for KIH 6127 and Oxyfluorfen and sulfonylurea herbicide, it is characterized in that: active ingredient is KIH 6127, Oxyfluorfen, sulfonylurea herbicide; The weight ratio of KIH 6127, Oxyfluorfen, sulfonylurea herbicide is 1 ~ 20:1 ~ 40:1 ~ 50.
2. a kind of Herbicidal combinations containing KIH 6127 and Oxyfluorfen and sulfonylurea herbicide according to claim 1, is characterized in that: described sulfonylurea herbicide is selected from the one in piperazine pyrazosulfuron or pyrazosulfuron.
3. a kind of Herbicidal combinations containing KIH 6127 and Oxyfluorfen and sulfonylurea herbicide according to claim 1, is characterized in that: its formulation is granule, the one dispersibled in oil-suspending agent, suspending agent, microemulsion, wetting powder, water dispersible granules, effervescent tablet and aqueous emulsion.
4. a kind of Herbicidal combinations containing KIH 6127 and Oxyfluorfen and Bing Que Evil humulone according to claim 1 is preventing and kill off the application in paddy field annual weed.
CN201510746584.1A 2015-11-04 2015-11-04 Weeding composition containing pyrithiobac-sodium, oxyfluorfen and sulfonylurea herbicide Pending CN105265464A (en)

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