CN104186517A - Flucetosulfuron-containing herbicide composition - Google Patents
Flucetosulfuron-containing herbicide composition Download PDFInfo
- Publication number
- CN104186517A CN104186517A CN201410405036.8A CN201410405036A CN104186517A CN 104186517 A CN104186517 A CN 104186517A CN 201410405036 A CN201410405036 A CN 201410405036A CN 104186517 A CN104186517 A CN 104186517A
- Authority
- CN
- China
- Prior art keywords
- flucetosulfuron
- sulfometuron methyl
- promazine sulfometuron
- herbicide
- weeds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000203 mixture Substances 0.000 title claims abstract description 59
- 230000002363 herbicidal effect Effects 0.000 title claims abstract description 57
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- 229960003598 promazine Drugs 0.000 claims abstract description 89
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- ZDXMLEQEMNLCQG-UHFFFAOYSA-N sulfometuron methyl Chemical group COC(=O)C1=CC=CC=C1S(=O)(=O)NC(=O)NC1=NC(C)=CC(C)=N1 ZDXMLEQEMNLCQG-UHFFFAOYSA-N 0.000 description 37
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a flucetosulfuron-containing herbicide composition, and discloses a herbicide for preventing and controlling paddy field weeds. The herbicide is a binary herbicide composition which comprises promazine sulfometuron methyl and flucetosulfuron, wherein the promazine sulfometuron methyl and the flucetosulfuron are taken as active components; the weight ratio of the promazine sulfometuron methyl and the flucetosulfuron of the binary herbicide composition is 3:20-192:5; the mass percentage of the promazine sulfometuron methyl and the flucetosulfuron accounts for 5%-80% of the compound herbicide. The compound herbicide disclosed by the invention can be prepared into conventional dosage forms, such as wettable powder, water dispersible granules and granules, and is capable of simultaneously preventing and controlling various paddy field weeds, thereby outstandingly enhancing the control effect on the paddy field weeds; the compound herbicide disclosed by the invention has the advantages of small usage amount of effective components, low usage cost and safety in paddy rice and succession crops, and thus is an ideal herbicide.
Description
[technical field]
The invention belongs to technical field of pesticide, be specifically related to a kind of herbicidal composition containing promazine Sulfometuron Methyl and flucetosulfuron, for preventing and kill off paddy field weed.
[background technology]
Paddy rice is the important cereal crops of China, all has throughout the country plantation, and the rice field of all rice workspaces of China always have a large amount of weeds to occur, and weeds kind is many, and harm is heavy, and chemical method weeding is one of Main Means of paddy field control weeds.But owing to using the change of a certain class weed killer herbicide and paddy field cropping system, the introducing of new varieties in rice field for a long time, make weed community occur significantly to change, weeds in paddy field bamboo telegraph also constantly spreads, and some weed killer herbicides have been found to have produced resistance; Grass while generation due to weeds complicated mutually simultaneously, and grass family, broad-leaved and sedge weed have concurrently, and weeds seedling-growing time is uneven, so when weed killer herbicide kind is used separately, all can show defect and limitation in a certain respect.Therefore, the weed killer herbicide that development of new is prevented and kill off paddy field weed is the important means of current paddy field weeding, is also the key of guaranteeing paddy rice good harvest high yield.
Promazine Sulfometuron Methyl is the pyrimidine radicals sulfonylurea selectivity broad-spectrum herbicide by the exploitation of SUMITOMO CHEMICAL chemistry, although identical with the mechanism of action of other sulfonylurea herbicides, for acetolactate synthestase (ALS) inhibitor, but the weeds of its antagonism sulfonylurea herbicide have good preventive effect, there is residual effect effect, be mainly used in paddy field and prevent and kill off multiple annual gramineae and broad leaved weed.This weed killer herbicide consumption is low, to rice safety, but as poor in the preventive effect of needle spikesedge herb, difformed galingale herb, flat stalk Fischer grass etc. to part sedge weed.
Flucetosulfuron belongs to sulfonylurea herbicide, it is acetolactate synthestase (ALS) inhibitor, can be used for water paddy soil or cauline leaf processing, after being absorbed by the root of plant, stem and leaf, by suppressing the acetolactate synthestase of plant, hinder branched-chain amino acid as the biosynthesis of valine, leucine, isoleucine, thereby destroy the synthetic of protein, disturb synthetic and cell division and the growth of DNA, finally cause plant death.Flucetosulfuron all has preventive effect to grassy weed, broad leaved weed and sedge weed, but in actual use, to weed control efficacy differences different in each section, for example the preventive effects such as barnyard grass, flat stalk Fischer grass, angustifolia arrowhead herb, false loosestrife, nutgrass flatsedge are reached to 90% left and right, poor to the preventive effect of Paspalum distichum, moleplant seed and pondweed etc.
Retrieve by pertinent literature, domestic existing and promazine Sulfometuron Methyl, the patent documentation that flucetosulfuron is relevant, Chinese patent CN103271064A discloses a kind of herbicidal composition containing promazine Sulfometuron Methyl and cyhalofop-butyl, said composition is better to broad-leaved and grassy weed preventive effect, but poor to the preventive effect of part sedge weed; Chinese patent CN102657207A discloses flucetosulfuron with the herbicidal composition of oxazole acyl grass amine mixture, and said composition is good to grass family and sedge weed field efficacy, but is not very desirable to the preventive effect of some broad leaved weed.
In order to make up above each single dose and to have reported the deficiency that complex preparation exists in actual application, the inventor furthers investigate, unexpected discovery on the basis of a large amount of formula indoor screenings and field control effectiveness test, promazine Sulfometuron Methyl and flucetosulfuron are composite in certain ratio range, paddy field weed is had to good control efficiency, the preventive effect showing and activity level exceed the stack of each component, there is unforeseeable synergistic function, having solved above two weed killer herbicides composes in herbicide, preventive effect, the limitation existing in safety, reach expansion herbicide spectrum, improve preventive effect, improve the object of safety.
[summary of the invention]
The object of the invention is to according to the current present situation of herbicide for paddy field, and paddy field weed a situation arises, a kind of efficient, low toxicity, broad weed-killing spectrum are provided, be conducive to the composition pesticide of the paddy field weed comprehensive regulation.
The present invention has adopted following technical scheme: a kind of herbicidal composition, two kinds of active components of the promazine Sulfometuron Methyl that comprises effective dose and flucetosulfuron.Wherein, promazine Sulfometuron Methyl (Propyrisulfuron), other titles: piperazine imidazoles Sulfometuron Methyl, molecular formula is C
16h
18clN
7o
5s, chemical name: 1-(the chloro-6-propyl imidazole of 2-[1,2-b] pyridazine-3-base sulfonyl)-3-(4,6-dimethoxypyridin-2-yl) urea, structural formula is:
Flucetosulfuron (Flucetosulfuron), other titles: Han Lesheng, molecular formula is: C
18h
22fN
5o
8s, chemical name: 1-[[(4,6-dimethoxypyridin-2-yl) amino] carbonyl] the fluoro-1-of-2-[2-(methoxy ketonic oxygen) propyl group]-3-pyridine sulfonylurea, structural formula is:
In described herbicidal composition, the weight ratio of active ingredient promazine Sulfometuron Methyl and flucetosulfuron is 3:20～192:5, is preferably 3:5～48:5, more preferably 12:5, and the weight percentage of two active components in herbicidal composition is 5～80%.
Herbicidal composition of the present invention, except two kinds of active ingredients, can also add the known substance that carrier, solvent, emulsifier, dispersant, wetting agent etc. and other contribute to active ingredient stable and drug effect performance in preparation.
As preferably, herbicidal composition of the present invention can be processed into the various formulations of the applicable agricultural uses such as wetting powder, water dispersible granules, granule, more preferably wetting powder.
Described wetting powder dispersant used can be selected from one or more in lignosulfonates, polycarboxylate, alkylnaphthalene sulfonate, neopelex, alkyl polyoxyethylene ether sulfonate, alkylphenol-polyethenoxy base ether formaldehyde condensation products etc.; Wetting agent can be selected from one or more in lauryl sodium sulfate, Teepol, fatty alcohol-polyoxyethylene ether, polyoxyethylene nonylphenol ether, sorbitan fatty acid ester APEO etc.; Carrier can be selected from one or more in kaolin, diatomite, attapulgite, bentonite, white carbon etc.
Described water dispersible granules dispersant used can be selected from one or more in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, alkylphenol polyoxyethylene, alkyl polyoxyethylene ether sulfonate etc.; Wetting agent can be selected from one or more in naphthalene sulfonate, lauryl sodium sulfate, sorbitan fatty acid ester polyoxyethylene ether, alkylsulfonate etc.; Disintegrant can be selected from one or more in ammonium sulfate, urea, starch and derivative thereof, low-substituted hydroxypropyl cellulose, polyvinylpyrrolidone, sodium alginate etc.; Adhesive can be selected from one or more in hydroxyethylcellulose, soluble starch, polyethylene glycol, methylcellulose, polycarboxylic acid and water-soluble high-molecular compound sodium carboxymethylcellulose, polyvinyl alcohol etc.; Carrier can be selected from one or more in white carbon, kaolin, bentonite, precipitated calcium carbonate, gypsum, attapulgite, urea, sucrose etc.
Described granule dispersant used can be selected from one or more in alkylnaphthalene sulfonate, dispersant NNO, lignosulfonates, alkylbenzenesulfonate, alkyl ethyl sulfonate, polycarboxylate etc.; Adhesive can be selected from one or more in paraffin, gypsum, hydroxypropyl methylcellulose, polyacrylamide, bentonite, polyethylene glycol, polyvinyl alcohol etc.; Disintegrant can be selected from one or more in calcium chloride, sodium chloride, magnesium chloride, aluminium chloride etc.; Carrier can be selected from one or more in ammonium sulfate, urea, potassium dihydrogen phosphate, superphosphate, diatomite, white carbon, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay, stone coal slag, clay, sand, sawdust etc.
Herbicidal composition provided by the invention is mainly used in paddy field management of weeds, and compared with prior art, the present invention possesses following beneficial effect:
1, herbicidal composition provided by the invention, expanded herbicide spectrum, in certain ratio range, shown synergistic function, the weeds of especially resisting sulfonylurea herbicide have special efficacy, reduce the using dosage of agricultural chemicals, reduced drug cost and the agricultural chemicals adverse effect to ecotope.
2, herbicidal composition provided by the invention, use cost is low, easy to use, time saving and energy saving, and can reduce the resistance risk that long-term use single herbicide produces, and extending the service life of medicament, it applies huge economic benefit and social benefit.
3, herbicidal composition provided by the invention is low to crop, toxicity to man and livestock, can in the situation that not injuring crop, kill various weeds, safer to crop.
[embodiment]
In order to make object of the present invention, technical scheme and advantage clearer, the present invention describes with following specific embodiment, but only limits to this absolutely not.The following stated is the good embodiment of the present invention; only for describing the present invention; can not be interpreted as limitation of the present invention, it should be noted that any amendment of making within the spirit and principles in the present invention, be equal to and replace and improve, within all should being included in protection scope of the present invention.
Example of formulations 1:10% promazine Sulfometuron Methyl flucetosulfuron wetting powder
Take 7.05% promazine Sulfometuron Methyl, 2.95% flucetosulfuron, 2% lauryl sodium sulfate, 3% sodium lignin sulfonate, kaolin complements to 100%, often regulation is for the method for wetting powder, i.e. front mixing, air-flow crushing, rear mixing, obtain 10% promazine Sulfometuron Methyl flucetosulfuron wetting powder.
Example of formulations 2:80% promazine Sulfometuron Methyl flucetosulfuron wetting powder
Take 30% promazine Sulfometuron Methyl, 50% flucetosulfuron, 3% alkylnaphthalene sulfonate, 4% fatty alcohol-polyoxyethylene ether, white carbon complements to 100%, often regulation is for the method for wetting powder, i.e. front mixing, air-flow crushing, rear mixing, obtain 80% promazine Sulfometuron Methyl flucetosulfuron wetting powder.
Example of formulations 3:53% promazine Sulfometuron Methyl flucetosulfuron water dispersible granules
Take 48% promazine Sulfometuron Methyl, 5% flucetosulfuron, 4% alkylphenol polyoxyethylene, 2% naphthalene sulfonate, 1% sodium alginate, 0.5% hydroxyethylcellulose, bentonite complements to 100%, often regulation is for the method for water dispersible granules, i.e. front mixing, air-flow crushing, rear mixing, the kneading that adds water, granulation, screening, obtain 53% promazine Sulfometuron Methyl flucetosulfuron water dispersible granules.
Example of formulations 4:23% promazine Sulfometuron Methyl flucetosulfuron water dispersible granules
Take 3% promazine Sulfometuron Methyl, 20% flucetosulfuron, 5% polycarboxylate, 2% alkylsulfonate, 2% polyvinylpyrrolidone, 1% polyethylene glycol, attapulgite complements to 100%, often regulation is for the method for water dispersible granules, i.e. front mixing, air-flow crushing, rear mixing, the kneading that adds water, granulation, screening, obtain 23% promazine Sulfometuron Methyl flucetosulfuron water dispersible granules.
Example of formulations 5:32% promazine Sulfometuron Methyl flucetosulfuron granule
Take 20% promazine Sulfometuron Methyl, 12% flucetosulfuron, 12% dispersant NNO, 0.2% carboxylic propyl methocel, 1% starch, 3% calcium chloride, precipitated calcium carbonate complements to 100%, often regulation, for the i.e. front mixing of method, air-flow crushing, rear mixing, the kneading that adds water, granulation, the screening of granule, obtains described 32% promazine Sulfometuron Methyl flucetosulfuron granule.
Example of formulations 6:19.7% promazine Sulfometuron Methyl flucetosulfuron granule
Take 19.2% promazine Sulfometuron Methyl, 0.5% flucetosulfuron, 10% alkylbenzenesulfonate, 2% bentonite, 5% sodium chloride, 8% superphosphate, white carbon and complement to 100%, often regulation, for the i.e. front mixing of method, air-flow crushing, rear mixing, the kneading that adds water, granulation, the screening of granule, obtains described 19.7% promazine Sulfometuron Methyl flucetosulfuron granule.
The raw embodiment 1 that surveys
Promazine Sulfometuron Methyl and flucetosulfuron cauline leaf are processed synergy toxicity determination test
In order to prevent and treat paddy field grassy weed, broad leaved weed and the sedge weed in agricultural production, inventor has studied the herbicidal effect of promazine Sulfometuron Methyl and flucetosulfuron binary built, and evaluate the synergy type of the two different proportion after mixed by the abundant method of Sun Yun, for the rational mixture of promazine Sulfometuron Methyl and flucetosulfuron provides scientific basis.Experiment is with reference to " farm-chemical indoor determination experiment criterion weed killer herbicide the 9th part ".
1, experimental condition
1.1 for examination weeds
Pondweed, Paspalum distichum, difformed galingale herb, flat stalk Fischer grass;
1.2 reagent agent
Promazine Sulfometuron Methyl
Flucetosulfuron
2, examination material is prepared
Cultivation for examination weeds adopts potted plant cultivation.By 18 × 14cm plastic basin, by the farmland that did not use weed killer herbicide, adopt the soil of returning air-dry, fill basin after sieving, in basin, dry ground is quantitatively to plastic basin 4/5 place, P in soil H value 7.0, the content of organic matter 1.2%.Adopt basin alms bowl bottom infiltrating irrigation mode, make soil completely moistening.Then by the seed uniform broadcasting through vernalization pretreated pondweed, Paspalum distichum, difformed galingale herb, flat stalk Fischer grass in soil surface, every basin is broadcast 30～40, earthing 1～2mm is placed in cellar culture in greenhouse.In incubation with the irrigation method moisturizing of basin alms bowl top to saturation state.After weeds emerge, every basin is decided to be 10 strains.
3, experimental scheme
46 processing are established in this test altogether, wherein promazine Sulfometuron Methyl establish 20,35,50,65,80g a.i./hm
25 dosage processing, flucetosulfuron establishes 8,14,20,26,32g a.i./hm
25 dosage processing.The two mixed establishes 7 assembly than processing promazine Sulfometuron Methyl+flucetosulfuron: 3:80,3:20,3:5,12:5,48:5,192:5,768:5, dosage is 8,14,20,26,32g a.i./hm
2, separately establish 1 clear water contrast, amount to 46 processing, repeat 4 times.
4, application method
The dispenser time limit carries out cauline leaf spraying and processes while fixing on 2.5～5 leaf phase of weeds, be placed in spray medicine (ASS-4 type pesticide spraying system, DG8003 shower nozzle, atomisation pressure 2.75MPA in tower, spouting liquid 30Kg/ mu), after dispenser, treat that natural air drying is placed on cultivation in greenhouse and observes.
5, data survey and statistical analysis
After dispenser, record in detail the symptom of being injured of weeds, process latter 20 days, carry out fresh weight measurement, and compare with control treatment, calculate weeds fresh weight preventive effect.By the linear regression analysis between probability value and the logarithm value of series concentration of preventive effect, calculate the ED of each processing
50and correlation coefficient, evaluate the biologically active of each processing to weeds, the abundant method of utilization Sun Yun calculates the co-toxicity coefficient of different medicament proportionings, evaluates the synergy situation of different proportionings, determines promazine Sulfometuron Methyl and flucetosulfuron optimum activity ratio.
The abundant method computing formula of Sun Yun:
In formula: E---fresh weight preventive effect;
C---contrast weeds acrial part weeds fresh weight;
T---process weeds acrial part weeds fresh weight.
In formula: ATI---mixture actual measurement toxicity index;
The ED of S---standard herbicide
50, unit is a gram per hectare (g a.i./hm
2);
The ED of M---mixture
50, unit is a gram per hectare (g a.i./hm
2).
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.
6, results and analysis is in table 1～4
Table 1 promazine Sulfometuron Methyl and flucetosulfuron mixture control paddy field weed pondweed virulence
Table 2 promazine Sulfometuron Methyl and flucetosulfuron mixture control paddy field weed Paspalum distichum virulence
Table 3 promazine Sulfometuron Methyl and flucetosulfuron mixture control paddy field weed difformed galingale herb virulence
Table 4 promazine Sulfometuron Methyl and the flat stalk Fischer grass of flucetosulfuron mixture control paddy field weed virulence
Toxicity Determination result shows, promazine Sulfometuron Methyl shows as and is added or synergistic effect weeds with flucetosulfuron is mixed in the scope of weight ratio 3:80～768:5, in the scope of weight ratio 3:20～192:5, use with and have good synergistic effect, in the scope of weight ratio 3:5～48:5, use with and have obvious synergistic effect, expand control of weeds spectrum, reached the object of simultaneously preventing and kill off grass family, broad-leaved and sedge weed.
The raw embodiment 2 that surveys
The composite cauline leaf of promazine Sulfometuron Methyl and flucetosulfuron is processed the Security test test to paddy rice
Process the safety to paddy rice in order to study the composite cauline leaf of promazine Sulfometuron Methyl and flucetosulfuron, for the rational mixture of promazine Sulfometuron Methyl and flucetosulfuron provides scientific basis, inventor has done following test, test is with reference to the agricultural industry criteria NY/T 1155.8-2007 of People's Republic of China (PRC) farm-chemical indoor determination experiment criterion-weed killer herbicide, the 8th part: the safety testing cauline leaf spray-on process of crop.
1, experimental condition
1.1 for studying thing
Paddy rice
1.2 for examination weeds
Barnyard grass
1.3 reagent agent
Promazine Sulfometuron Methyl
Flucetosulfuron
2, examination material is prepared
2.1 for studying thing
Adopt greenhouse pot culture method for the cultivation that studies thing, by 18 × 14cm plastic basin, put in shallow-water tank, by air-dry the soil of adopting back, after sieving, fill basin, quantitative 4/5 place of dry ground in basin in the farmland that did not use weed killer herbicide, P in soil H value 7.0, the content of organic matter 1.2%.Adopt basin alms bowl bottom infiltrating irrigation mode, after making soil completely moistening, rice paddy seed is quantitatively broadcasted sowing in soil surface to earthing 1.0cm, 28～32 DEG C/18～25 DEG C of indoor temperatures (d/n), relative moisture 75% ± 15%.In incubation with the irrigation method moisturizing of basin alms bowl top to saturation state.After rice seedling, every basin is decided to be 10 strains.
2.2 for examination weeds
Cultivation for examination weeds adopts greenhouse pot culture method, by 18 × 14cm plastic basin, puts in shallow-water tank, and by not using, the soil of adopting back in the farmland of weed killer herbicide was air-dry, after sieving, filled basin, quantitative 4/5 place of dry ground in basin, P in soil H value 7.0, the content of organic matter 1.2%.Adopt basin alms bowl bottom infiltrating irrigation mode, after making soil completely moistening, quantitatively broadcast sowing in soil surface earthing 2mm, 28～32 DEG C/18～25 DEG C of indoor temperatures (d/n), relative moisture 75% ± 15% for examination weed seed by pretreated.With the moisturizing of basin alms bowl bottom infiltrating irrigation mode, keep soil fully moistening, after barnyard grass is emerged, every basin is decided to be 10 strains.
3, experimental scheme
3.1 weeds dispenser dosage
36 processing are established in test altogether, wherein promazine Sulfometuron Methyl establish 20,30,40,50,60g a.i./hm
25 dosage processing, flucetosulfuron establishes 10,15,20,25,30g a.i./hm
25 dosage processing.The two mixed establishes 5 assembly than processing promazine Sulfometuron Methyl+flucetosulfuron: 3:20,3:5,12:5,48:5,192:5, dosage is 10,15,20,25,30g a.i./hm
2, separately establish 1 clear water contrast, amount to 36 processing, repeat 4 times.
3.2 crop dispenser dosage
36 processing are established in test altogether, wherein promazine Sulfometuron Methyl establish 60,90,120,150,180g a.i./hm
25 dosage processing, flucetosulfuron establishes 30,45,60,75,90g a.i./hm
25 dosage processing.The two mixed establishes 5 assembly than processing promazine Sulfometuron Methyl+flucetosulfuron: 3:20,3:5,12:5,48:5,192:5, dosage is 60,90,120,150,180g a.i./hm
2, separately establish 1 clear water contrast, amount to 36 processing, repeat 4 times.
4, application method
The dispenser time limit carries out cauline leaf spraying and processes while fixing on 3～4 leaf phases of paddy rice, 2.5～5 leaf phase of weeds, be placed in spray medicine (ASS-4 type pesticide spraying system, DG8003 shower nozzle, atomisation pressure 2.75MPA in tower, spouting liquid 30Kg/ mu), treat that natural air drying is placed on cultivation in greenhouse and observes.
5, data survey and statistical analysis
5.1 crop investigation
After dispenser, investigate each processing paddy rice and have or not symptom of chemical damage, record in detail symptom of chemical damage if having, within after medicine 20 days, weigh each processing paddy rice fresh weight, calculate fresh weight inhibiting rate, the safety with clear and definite test medicine to paddy rice.
5.2 weeds investigation
After dispenser, record in detail the symptom of being injured (as growth inhibition, chlorosis, deformity etc.) of weeds, after medicine 20 days, weigh each processing weeds acrial part fresh weight, adopt growth inhibition assay to calculate the fresh weight preventive effect of weeds.
5.3 growth inhibition assay computing formula
In formula:
E-fresh weight preventive effect, unit is percentage (%);
T
0-contrast weeds acrial part fresh weight, unit is gram;
T
1-processing weeds acrial parts fresh weight, unit is gram.
5.4 selectivity index computational methods
6, results and analysis is in table 5～7
The preventive effect of table 5 promazine Sulfometuron Methyl mixtures' ratios different from flucetosulfuron to barnyard grass
The safety of table 6 promazine Sulfometuron Methyl mixtures' ratios different from flucetosulfuron to paddy rice
The selectivity index of table 7 promazine Sulfometuron Methyl mixtures' ratios different from flucetosulfuron to paddy rice
Note: in table 7 data be by market demand DPS2000 data handling system in table 5, table 6 (Tang Qiyi, Feng Mingguang. Practical Statistic analysis and DPS data handling system [M] thereof. Beijing: Science Press, 2002.188-201) calculate.
In the time of selectivity index >=4, represent that the selectivity of medicament between crops and weeds is very high, in the time of 2≤selectivity index < 4, represent that medicament has selectivity between crops and weeds, in the time of selectivity index < 2, represent the poor selectivity of medicament between crops and weeds.The Security test of paddy rice is tested and shown, promazine Sulfometuron Methyl is greater than 2 with flucetosulfuron mixed selectivity index to paddy rice in the scope of weight ratio 3:20～192:5, to rice safety.
The raw embodiment 3 that surveys
Prevent and kill off paddy field weed field control effectiveness test I:
1, test is processed
(1) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powder (3:20) 57g/ mu
(2) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powder (3:5) 57g/ mus
(3) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powder (12:5) 57g/ mus
(4) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powder (48:5) 57g/ mus
(5) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powder (192:5) 57g/ mus
(6) 10% promazine Sulfometuron Methyl suspending agent 57g/ mus
(7) 10% flucetosulfuron wetting powder 57g/ mus
(8) blank
7 processing are established in test, repeat for 4 times, process community for totally 28,20 square metres of every processing community areas, and random district group is arranged.(1)～(5) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powder is reagent agent, and 10% promazine Sulfometuron Methyl suspending agent and 10% flucetosulfuron wetting powder are contrast medicament.Every mu is watered 30 kilograms, adopts 552 third type sprayers (0.7mm aperture) even spraying.Field main weeds has pondweed, Paspalum distichum, wild water chestnut, difformed galingale herb, flat stalk Fischer grass, needle spikesedge herb etc.
2, pilot project and method
(1) safety: after dispenser, the situation of growing of investigation paddy rice, evaluates the safety of reagent agent to paddy rice.
(2) herbicidal effect: every community is got 4 points at random, investigates 1/4 square metre at every, and after dispenser, 20 days investigation weed control efficacies, record respectively weeds kind and strain number, calculate weeds strain preventive effect.
(3) result of the test
Safety: dispenser " Invest, Then Investigate ", chemicals treatment district Plant Height of Rice, Ye Se and blank district are basically identical, show that reagent agent (1)～(5) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powder is all to rice safety.
Herbicidal effect: in table 8
20 days various weed control efficacies after table 8 medicine
Note: (1) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powder (3:20)
(2) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powders (3:5)
(3) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powders (12:5)
(4) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powders (48:5)
(5) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powders (192:5)
(6) 10% promazine Sulfometuron Methyl suspending agents
(7) 10% flucetosulfuron wetting powders
(8) blank
As shown in Table 8,10% promazine Sulfometuron Methyl flucetosulfuron wetting powder of different proportionings between 80.87%～96.59%, is all better than contrasting medicament 10% promazine Sulfometuron Methyl suspending agent and 10% flucetosulfuron wetting powder (weeds strain preventive effect is respectively 62.42% and 59.67%) to common weed strain preventive effect.When wherein promazine Sulfometuron Methyl flucetosulfuron weight ratio is 3:20～192:5, all paddy field common weed is had to obvious preventive effect, weeds strain preventive effect is all more than 80%; All better to paddy field common weed preventive effect when promazine Sulfometuron Methyl flucetosulfuron weight ratio is 3:5～48:5, weeds strain preventive effect is all more than 91%; And promazine Sulfometuron Methyl flucetosulfuron weight ratio while being 12:5 preventive effect especially up to 96.59%.Explanation thus, promazine Sulfometuron Methyl flucetosulfuron weight ratio, within the scope of 3:20～192:5, the common grassy weed of paddy field, broad leaved weed and sedge weed are had to preventive effect, and this herbicidal composition is to rice safety.
Prevent and kill off paddy field weed field control effectiveness test II:
1, test is processed
(1) 5% promazine Sulfometuron Methyl flucetosulfuron wetting powder (12:5) 114g/ mu
(2) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powder (12:5) 57g/ mus
(3) 50% promazine Sulfometuron Methyl flucetosulfuron wetting powder (12:5) 11.4g/ mus
3 processing are established in test, repeat for 4 times, process community for totally 12,20 square metres of every processing community areas, and random district group is arranged.(1)～(3) promazine Sulfometuron Methyl flucetosulfuron wetting powder is reagent agent, and every mu is watered 30 kilograms, adopts 552 third type sprayers (0.7mm aperture) even spraying.Field main weeds has pondweed, Paspalum distichum, wild water chestnut, difformed galingale herb, flat stalk Fischer grass, needle spikesedge herb etc.
2, pilot project and method
Herbicidal effect: every community is got 4 points at random, investigates 1/4 square metre at every, and after dispenser, 20 days investigation weed control efficacies, record respectively weeds kind and strain number, calculate weeds strain preventive effect.
3, result of the test: herbicidal effect is in table 9
20 days various weed control efficacies after table 9 medicine
Note: (1) 5% promazine Sulfometuron Methyl flucetosulfuron wetting powder (12:5)
(2) 10% promazine Sulfometuron Methyl flucetosulfuron wetting powders (12:5)
(3) 50% promazine Sulfometuron Methyl flucetosulfuron wetting powders (12:5)
As shown in Table 9, in the time that the weight ratio of promazine Sulfometuron Methyl and flucetosulfuron is 12:5, the promazine Sulfometuron Methyl flucetosulfuron wetting powder of different content to common weed strain preventive effect all more than 95%, while showing that promazine Sulfometuron Methyl and flucetosulfuron weight ratio are optimal proportion, the herbicidal composition of different activities component content all has significant preventive effect to paddy field weed.
In sum, component of the present invention is reasonable, the activity that preventive effect is better than each component while using separately, grassy weed, broad leaved weed and sedge weed are all had to good preventive effect, expand control of weeds spectrum, delay the generation of herbicide resistance, to crop safety, met the security requirement of pesticidal preparations.
Claims (6)
1. contain a herbicidal composition for flucetosulfuron, it is characterized in that said composition is taking promazine Sulfometuron Methyl and flucetosulfuron as active ingredient, active ingredient weight ratio is: promazine Sulfometuron Methyl: flucetosulfuron=3:20-192:5.
2. herbicidal composition according to claim 1, is characterized in that active ingredient weight ratio is: promazine Sulfometuron Methyl: flucetosulfuron=3:5-48:5.
3. herbicidal composition according to claim 2, is characterized in that active ingredient weight ratio is: promazine Sulfometuron Methyl: flucetosulfuron=12:5.
4. according to the herbicidal composition described in any one in claim 1-3, it is characterized in that the percentage composition of active ingredient in herbicidal composition is 5 ~ 80%.
5. herbicidal composition according to claim 1, is characterized in that said composition can be upper any formulation allowing of agricultural.
6. herbicidal composition according to claim 1, is characterized in that for preventing and kill off paddy field weed.
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| CN1617666A (en) * | 2002-01-18 | 2005-05-18 | 住化武田农药株式会社 | Fused heterocyclic sulfonylurea compound, herbicide containing the same, and method for controlling weeds using it |
| CN101022731A (en) * | 2004-09-17 | 2007-08-22 | 石原产业株式会社 | Herbicidal composition |
| CN101102671A (en) * | 2004-12-17 | 2008-01-09 | 株式会社Lg生命科学 | Synergistic herbicidal composition |
| CN103081936A (en) * | 2004-12-17 | 2013-05-08 | 株式会社Lg生命科学 | Synergistic Herbicidal Compositions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106489975A (en) * | 2015-09-07 | 2017-03-15 | 江苏龙灯化学有限公司 | A kind of Herbicidal combinations |
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