CN104186516B - A kind of herbicide composition for paddy fields containing pyribenzoxim - Google Patents
A kind of herbicide composition for paddy fields containing pyribenzoxim Download PDFInfo
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- CN104186516B CN104186516B CN201410401748.2A CN201410401748A CN104186516B CN 104186516 B CN104186516 B CN 104186516B CN 201410401748 A CN201410401748 A CN 201410401748A CN 104186516 B CN104186516 B CN 104186516B
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Abstract
The invention discloses a kind of weed killer herbicide for preventing and kill off paddy field weed, it is the binary herbicidal composition that active component forms by promazine Sulfometuron Methyl and pyribenzoxim, in said composition, promazine Sulfometuron Methyl and pyribenzoxim weight ratio is therebetween 1:10 ~ 128:5, and mass percentage is 5 ~ 80% of described complex weedicide.Compared with this herbicidal composition is used alone with single dose, not only can significantly improve herbicidal effect, expand herbicide spectrum, and the generation of herbicide resistance can be slowed down, decreasing spraying times simultaneously, reduce cost accounting, Environmental compatibility is good, is the ideal new compositions medicament of water prevention weeds in paddy field.
Description
[technical field]
The invention belongs to field of pesticide preparation, be specifically related to a kind of herbicidal composition being active ingredient with promazine Sulfometuron Methyl and pyribenzoxim, be applied to paddy field management of weeds.
[background technology]
Paddy rice is one of world's staple food crop, and nearly half population is all food with rice in the world, produce throughout each continent except the Antarctic Continent, but weeds in paddy field is the key factor affecting rice yield always.Paddy field weeding is a great problem in Rice Production, and chemical method weeding is the Main Means controlling weeds, the use of weed killer herbicide not only can be saved large quantities of labour, be raised labour productivity, and weeds are removed between the seedling that large quantities of machinery can be made to be difficult to remove, therefore, the investigation and application of chemical herbicide is more and more subject to people's attention, and sales volume proportion in pesticide producing amount of chemical herbicide increases year by year, uses the area of weed killer herbicide also in continuous expansion.At present, more in paddy field application is older sulfonylurea selectivity inner-adsorption conduction-type herbicide, but due to long-term in the use of paddy field, cause occurring some difficult problems in application process, wherein the most outstanding is that its herbicide carryover and weeds are to the resistance problems of sulfonylurea herbicide.Therefore, be badly in need of the weed killer herbicide of a kind of efficient control weeds in paddy field of research and development, in order to the Weed infestation that reply is day by day serious.
Promazine Sulfometuron Methyl is by the pyrimidine radicals sulfonylurea selectivity broad-spectrum herbicide of SUMITOMO CHEMICAL chemistry exploitation, 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 poor to the preventive effect of part sedge weed as needle spikesedge herb, difformed galingale herb, flat stalk Fischer grass etc.
Pyribenzoxim is a kind of efficient selective pyrimidine ether weed killer herbicide, it is acetolactate synthestase (ALS) inhibitor, absorb through cauline leaf, conduct in plant corpus, affect the activity of acetolactate synthestase, suppress the amino acid whose synthesis of sensitive plant, after weeds absorb medicament, young shoot and root stop growing, and tender tissue such as lobus cardiacus turns to be yellow, and then whole strain is withered.Can be used for paddy rice and wheat paddock postemergence weed control, to crop safety, all have good preventive effect to paddy field grassy weed, nutgrass flatsedge and part broad leaved weed.But because pyribenzoxim uses for many years continuously, part weeds produce resistance to it, and preventive effect obviously declines.
Found by pertinent literature retrieval, domestic existing to promazine Sulfometuron Methyl, patent document that pyribenzoxim is relevant, as 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 as needle spikesedge herb, difformed galingale herb etc.; Patent CN103271061A discloses the herbicidal composition of pyribenzoxim and pyrazosulfuron compound, and said composition, to the poor stability of crop, needs to add safener to improve safety.
Promazine Sulfometuron Methyl and pyribenzoxim all can prevent and kill off grassy weed, but prevent and kill off respective defect to broad leaved weed and sedge weed.In order to make up above each single dose and report the deficiency that complex preparation exists in actual application, the present inventor furthers investigate, unexpected discovery on the basis of the screening of a large amount of formula indoors and field control effectiveness test, promazine Sulfometuron Methyl and pyribenzoxim composite in certain ratio range, to paddy field weed, there is excellent control efficiency, the preventive effect shown and activity level exceed the superposition of each component, there is unforeseeable synergistic function, solve above two kinds of weed killer herbicides to compose in herbicide, preventive effect, the limitation that safety exists, reach and expand herbicide spectrum, improve preventive effect, improve the object of safety.
[summary of the invention]
The object of the invention is to the present situation according to current herbicide for paddy field, and paddy field weed a situation arises, a kind of efficient, herbicidal composition that low toxicity, broad weed-killing spectrum are conducive to the paddy field weed comprehensive regulation is provided.
Present invention employs following technical scheme: a kind of herbicidal composition, include promazine Sulfometuron Methyl and pyribenzoxim two kinds of active components of effective amount.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 [1,2-b] of 2-pyridazine-3-base sulfonyl)-3-(4,6-dimethoxypyridin-2-base) urea, structural formula is:
Pyribenzoxim (Pyribenzoxim), other titles: Han Letian, molecular formula is: C
32h
27n
5o
8, chemical name: O-[two [(4, the 6-dimethoxy-2-pyrimidine radicals) oxygen base] benzoyl of 2,6-] diphenyl-ketoxime, structural formula is:
In described herbicidal composition, the mass ratio of active ingredient promazine Sulfometuron Methyl and pyribenzoxim is promazine Sulfometuron Methyl: pyribenzoxim=1:10 ~ 128:5, be preferably 2:5 ~ 32:5, more preferably 8:5, the percentage composition of two active components in herbicidal composition is 5 ~ 80%.
Herbicidal composition of the present invention is except two kinds of active ingredients, the auxiliary agent that carrier, dispersant, wetting agent, thickener, adhesive etc. agriculturally allow can also be added, be processed into the multiple formulation of the applicable agricultural uses such as water dispersible granules, wetting powder, granule according to the method for well known to a person skilled in the art, preferred dosage form is water dispersible granules.
As preferably, water dispersible granules of the present invention is adjuvant used to be comprised: dispersant can be selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, alkylphenol polyoxyethylene, alkyl polyoxyethylene ether sulfonate one or more; Wetting agent can be selected from naphthalene sulfonate, lauryl sodium sulfate, sorbitan fatty acid ester polyoxyethylene ether, alkylsulfonate one or more; Disintegrant can be selected from ammonium sulfate, urea, starch and derivative thereof, low-substituted hydroxypropyl cellulose, polyvinylpyrrolidone, sodium alginate one or more; Adhesive can be selected from hydroxyethylcellulose, soluble starch, polyethylene glycol, methylcellulose, polycarboxylic acid and water-soluble high-molecular compound sodium carboxymethylcellulose, polyvinyl alcohol one or more; Carrier can be selected from white carbon, kaolin, bentonite, precipitated calcium carbonate, gypsum, attapulgite, urea, sucrose one or more.
As preferably, wetting powder of the present invention is adjuvant used to be comprised: dispersant can be selected from lignosulfonates, polycarboxylate, alkylnaphthalene sulfonate, neopelex, alkyl polyoxyethylene ether sulfonate, alkylphenol-polyethenoxy base ether formaldehyde condensation products one or more; Wetting agent can be selected from lauryl sodium sulfate, Teepol, fatty alcohol-polyoxyethylene ether, polyoxyethylene nonylphenol ether, sorbitan fatty acid ester APEO one or more; Carrier can be selected from kaolin, diatomite, attapulgite, bentonite, white carbon one or more.
As preferably, granule of the present invention is adjuvant used to be comprised: dispersant can be selected from alkylnaphthalene sulfonate, dispersant NNO, lignosulfonates, alkylbenzenesulfonate, alkyl ethyl sulfonate, polycarboxylate one or more; Adhesive can be selected from paraffin, gypsum, hydroxypropyl methylcellulose, polyacrylamide, polyethylene glycol, polyvinyl alcohol one or more; Disintegrant can be selected from calcium chloride, sodium chloride, magnesium chloride, aluminium chloride one or more; Carrier can be selected from ammonium sulfate, urea, potassium dihydrogen phosphate, superphosphate, diatomite, white carbon, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
Herbicidal composition of the present invention is mainly used in preventing and kill off paddy field weed, and compared with prior art, the present invention possesses following beneficial effect:
1, herbicidal composition provided by the invention, expand herbicide spectrum, in certain ratio range, show synergistic function, the control efficiency of composition has had than single dose and has significantly improved, decrease the using dosage of agricultural chemicals, reduce drug cost and agricultural chemicals to the adverse effect of ecotope.
2, herbicidal composition provided by the invention, easy to use, time saving and energy saving, and can reduce the resistance risk of Long-Time Service single herbicide generation, and extend 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 kill various weeds under the prerequisite not injuring crop, safer to crop.
[embodiment]
In order to make object of the present invention, technical scheme and advantage clearly understand, the following specific embodiment of the present invention is described, but is only limitted to this absolutely not.The following stated is the good embodiment of the present invention; only for describing the present invention; can not limitation of the present invention be interpreted as, it should be noted that any amendment done within the spirit and principles in the present invention, equivalent replacement and improve, all should be included within protection scope of the present invention.
Example of formulations 1:65% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules
Take 40% promazine Sulfometuron Methyl, 25% pyribenzoxim, 5% polycarboxylate, 2% alkylsulfonate, 2% polyvinylpyrrolidone, 1% polyethylene glycol, attapulgite complements to 100%, frequent regulation is for the method for water dispersible granules, i.e. forward slip value, air-flow crushing, rear mixing, add water kneading, granulation, screening, obtains 65% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules.
Example of formulations 2:28% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules
Take 8% promazine Sulfometuron Methyl, 20% pyribenzoxim, 4% alkylphenol polyoxyethylene, 2% naphthalene sulfonate, 1% sodium alginate, 0.5% hydroxyethylcellulose, bentonite complements to 100%, frequent regulation is for the method for water dispersible granules, i.e. forward slip value, air-flow crushing, rear mixing, add water kneading, granulation, screening, obtains 28% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules.
Example of formulations 3:37% promazine Sulfometuron Methyl pyribenzoxim wetting powder
Take 32% promazine Sulfometuron Methyl, 5% pyribenzoxim, 2% lauryl sodium sulfate, 3% sodium lignin sulfonate, 5% white carbon, kaolin complements to 100%, frequent regulation is for the method for wetting powder, i.e. forward slip value, air-flow crushing, rear mixing, obtains 37% promazine Sulfometuron Methyl pyribenzoxim wetting powder.
Example of formulations 4:22% promazine Sulfometuron Methyl pyribenzoxim wetting powder
Take 2% promazine Sulfometuron Methyl, 20% pyribenzoxim, 3% alkylnaphthalene sulfonate, 4% fatty alcohol-polyoxyethylene ether, kaolin complements to 100%, frequent regulation is for the method for wetting powder, i.e. forward slip value, air-flow crushing, rear mixing, obtains 22% promazine Sulfometuron Methyl pyribenzoxim wetting powder.
Example of formulations 5:13.3% promazine Sulfometuron Methyl pyribenzoxim granule
Take 12.8% promazine Sulfometuron Methyl, 0.5% pyribenzoxim, 8% lignosulfonates, 2% polycarboxylate, 1% polyethylene glycol, 2% sodium chloride, 5% white carbon, 20% sodium sulphate, ammonium sulfate complements to 100%, frequent regulation for granule method and forward slip value, air-flow crushing, rear mixing, add water kneading, granulation, screening, obtains described 13.3% promazine Sulfometuron Methyl pyribenzoxim granule.
Example of formulations 6:48% promazine Sulfometuron Methyl pyribenzoxim granule
Take 8% promazine Sulfometuron Methyl, 40% pyribenzoxim, 12% alkylbenzenesulfonate, 4% polyacrylamide, 2% magnesium chloride, 15% white carbon, 5% urea, diatomite complements to 100%, frequent regulation for granule method and forward slip value, air-flow crushing, rear mixing, add water kneading, granulation, screening, obtains described 48% promazine Sulfometuron Methyl pyribenzoxim granule.
Raw survey embodiment 1
Promazine Sulfometuron Methyl and pyribenzoxim cauline leaf process synergy toxicity determination test
In order to prevent and treat paddy field grassy weed in agricultural production, broad leaved weed and sedge weed, inventors have investigated the herbicidal effect of promazine Sulfometuron Methyl and pyribenzoxim binary built, and the synergy type after using with Sun Yun abundant both method evaluations different proportion, for the rational mixture of promazine Sulfometuron Methyl and pyribenzoxim 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
Wild water chestnut, angustifolia arrowhead herb, needle spikesedge herb, difformed galingale herb;
1.2 reagent agent
Promazine Sulfometuron Methyl
Pyribenzoxim
2, try material to prepare
Cultivation for examination weeds adopts potted plant cultivation.By 18 × 14cm plastic basin, by air-dry for the soil not using the farmland of weed killer herbicide to adopt to return, sieve after fill basin, in basin, dry ground is quantitatively to 4/5 place of plastic basin, P in soil H value 7.0, the content of organic matter 1.2%.Adopt infiltrating irrigation mode bottom basin alms bowl, make soil completely moistening.Then evenly will be sowed at soil surface through the pretreated needle spikesedge herb of vernalization, difformed galingale herb seed broadcasting, every basin broadcasts 30 ~ 40, earthing 1 ~ 2mm, and wild water chestnut, the every basin of angustifolia arrowhead herb stem tuber 15 earthing 0.5 ~ 1cm, be 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 process are established in this test altogether, wherein promazine Sulfometuron Methyl establish 20,35,50,65,80g a.i./hm
25 dosage process, pyribenzoxim establishes 12,21,30,39,48g a.i./hm
25 dosage process.Promazine Sulfometuron Methyl+both pyribenzoxims are mixed establishes 7 assembly than process: 1:40,1:10,2:5,8:5,32:5,128:5,512:5, dosage is 12,21,30,39,48g a.i./hm
2, separately establish 1 clear water contrast, amount to 46 process, repeat 4 times.
4, application method
The dispenser time limit carries out cauline leaf spraying process when fixing on weeds 2.5 ~ 5 leaf phase, 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 in greenhouse to cultivate and observe.
5, data survey and statistical analysis
Record the damage symptoms of weeds after dispenser in detail, process latter 20 days, carry out fresh weight measurement, and compared with control treatment, calculate weeds fresh weight preventive effect.By the linear regression analysis between the probability value of preventive effect and the logarithm value of series concentration, calculate the ED of each process
50and correlation coefficient, evaluate the biologically active of each process to weeds, use the abundant method of Sun Yun to calculate the co-toxicity coefficient of different agents proportioning, evaluate the synergy situation of different ratio, determine promazine Sulfometuron Methyl and pyribenzoxim 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 the wild water chestnut virulence of pyribenzoxim mixture water prevention weeds in paddy field
Table 2 promazine Sulfometuron Methyl and pyribenzoxim mixture water prevention weeds in paddy field angustifolia arrowhead herb virulence
Table 3 promazine Sulfometuron Methyl and pyribenzoxim mixture water prevention weeds in paddy field needle spikesedge herb virulence
Table 4 promazine Sulfometuron Methyl and pyribenzoxim mixture water prevention weeds in paddy field difformed galingale herb virulence
Toxicity Determination result shows, promazine Sulfometuron Methyl and pyribenzoxim are mixed in the scope of weight ratio 1:40 ~ 512:5 shows as addition or synergistic effect to weeds, mixed in the scope of weight ratio 1:10 ~ 128:5 have good synergistic effect, mixed in the scope of weight ratio 2:5 ~ 32:5 have obvious synergistic effect, expand herbicide spectrum, make mixture except preventing and kill off except the grassy weeds such as barnyard grass, also there is good preventive effect to broad leaved weed and sedge weed, reach the object of simultaneously preventing and kill off the various weeds of paddy field.
Raw survey embodiment 2
Promazine Sulfometuron Methyl and the composite cauline leaf process of pyribenzoxim are tested the Security test of paddy rice
In order to study promazine Sulfometuron Methyl and the composite cauline leaf process of pyribenzoxim to the safety of paddy rice, for the rational mixture of promazine Sulfometuron Methyl and pyribenzoxim provides scientific basis, inventor has done following test, test tests criterion-weed killer herbicide with reference to People's Republic of China (PRC) agricultural industry criteria NY/T 1155.8-2007 farm-chemical indoor determination, 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
Pyribenzoxim
2, try material to prepare
2.1 for studying thing
Adopt greenhouse pot culture method for the cultivation studying thing, by 18 × 14cm plastic basin, put in shallow-water tank, by air-dry for the soil adopted back in the farmland not using weed killer herbicide, fill basin after sieving, in basin, dry ground is quantitatively to 4/5 place of plastic basin, P in soil H value 7.0, the content of organic matter 1.2%.Adopt infiltrating irrigation mode bottom basin alms bowl, after making soil completely moistening, rice paddy seed is quantitatively broadcasted sowing in soil surface, earthing 1.0cm, indoor temperature 28 ~ 32 DEG C/18 ~ 25 DEG C (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, by not using, the soil adopted back in the farmland of weed killer herbicide was air-dry, filled basin after sieving, and in basin, dry ground is quantitatively to 4/5 place of plastic basin, P in soil H value 7.0, the content of organic matter 1.2%.Adopt infiltrating irrigation mode bottom basin alms bowl, after making soil completely moistening, quantitatively broadcast sowing pretreated in soil surface for examination weed seed, earthing 2mm, indoor temperature 28 ~ 32 DEG C/18 ~ 25 DEG C (d/n), relative moisture 75% ± 15%.With infiltrating irrigation mode moisturizing bottom basin alms bowl, 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 process are established in test altogether, wherein promazine Sulfometuron Methyl establish 20,30,40,50,60g a.i./hm
25 dosage process, pyribenzoxim establishes 5,15,25,35,45g a.i./hm
25 dosage process.Promazine Sulfometuron Methyl+both pyribenzoxims are mixed establishes 5 assembly than process: 1:10,2:5,8:5,32:5,128:5, dosage is 5,15,25,35,45g a.i./hm
2, separately establish 1 clear water contrast, amount to 36 process, repeat 4 times.
3.2 crop dispenser dosage
36 process are established in test altogether, wherein promazine Sulfometuron Methyl establish 60,90,120,150,180g a.i./hm
25 dosage process, pyribenzoxim establishes 50,75,100,125,150g a.i./hm
25 dosage process.Promazine Sulfometuron Methyl+both pyribenzoxims are mixed establishes 5 assembly than process: 1:10,2:5,8:5,32:5,128:5, dosage is 60,90,120,150,180g a.i./hm
2, separately establish 1 clear water contrast, amount to 36 process, repeat 4 times.
4, application method
The dispenser time limit carries out cauline leaf spraying process when fixing on paddy rice 3 ~ 4 leaf phase, weeds 2.5 ~ 5 leaf phase, 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 in greenhouse to cultivate and observe.
5, data survey and statistical analysis
5.1 crop investigation
After dispenser, investigate each process paddy rice with or without symptom of chemical damage, if having, record symptom of chemical damage in detail, within after medicine 20 days, weigh each process paddy rice fresh weight, calculate fresh weight inhibition, with the safety of clear and definite test medicine to paddy rice.
5.2 weedy rices
The damage symptoms (as growth inhibition, chlorosis, deformity etc.) of detailed record weeds after dispenser, after medicine 20 days, weighs each process weeds acrial part fresh weight, the fresh weight preventive effect of employing growth inhibition assay calculating 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-process weeds acrial part fresh weight, unit is gram.
5.4 selectivity index computational methods
6, results and analysis is in table 5 ~ 7
Table 5 promazine Sulfometuron Methyl mixtures' ratio different from pyribenzoxim is to the preventive effect of barnyard grass
Table 6 promazine Sulfometuron Methyl mixtures' ratio different from pyribenzoxim is to the safety of paddy rice
Table 7 promazine Sulfometuron Methyl mixtures' ratio different from pyribenzoxim is to the selectivity index of 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.
When selectivity index >=4, represent that the selectivity of medicament between crops and weeds is very high, as 2≤selectivity index < 4, represent that medicament has selectivity between crops and weeds, as selectivity index < 2, represent the poor selectivity of medicament between crops and weeds.Show the Security test test of paddy rice, promazine Sulfometuron Methyl and the pyribenzoxim mixed selectivity index to paddy rice in the scope of weight ratio 1:10 ~ 128:5 is greater than 2, to rice safety.
Raw survey embodiment 3
Prevent and kill off paddy field weed field control effectiveness test I:
1, test process
7 process are established in test, repeat for 4 times, totally 28 process communities, and often process plot area 20 square metres, random district group arranges.(1) ~ (5) 65% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules is reagent agent, and 10% promazine Sulfometuron Methyl suspending agent and 5% pyribenzoxim missible oil are contrast medicament.Every mu is watered 30 kilograms, adopts 552 third type sprayers (0.7mm aperture) even spraying.Field main weeds has wild water chestnut, angustifolia arrowhead herb, barnyard grass, needle spikesedge herb, difformed galingale herb, flat stalk Fischer grass etc.
2, pilot project and method
(1) safety: after dispenser, the situation of growing of investigation paddy rice, evaluates reagent agent to the safety of paddy rice.
(2) herbicidal effect: every community gets 4 points at random, investigates 1/4 square metre at often, and after dispenser, 20 days investigation weed control efficacies, record weeds kind and strain number respectively, 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) 65% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules is all to rice safety.
Herbicidal effect: in table 8
20 days various weed control efficacies after table 8 medicine
Note: (1) 65% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules (1:10)
(2) 65% promazine Sulfometuron Methyl pyribenzoxims water dispersible granules (2:5)
(3) 65% promazine Sulfometuron Methyl pyribenzoxims water dispersible granules (8:5)
(4) 65% promazine Sulfometuron Methyl pyribenzoxims water dispersible granules (32:5)
(5) 65% promazine Sulfometuron Methyl pyribenzoxims water dispersible granules (128:5)
(6) 10% promazine Sulfometuron Methyl suspending agents
(7) 5% pyribenzoxim missible oil
(8) blank
As shown in Table 8,65% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules of different ratio between 82.94% ~ 98.07%, is all better than contrast medicament 10% promazine Sulfometuron Methyl suspending agent and 5% pyribenzoxim missible oil (weeds strain preventive effect is respectively 61.70% and 72.96%) to common weed strain preventive effect.Have obvious preventive effect to paddy field common weed when wherein promazine Sulfometuron Methyl pyribenzoxim weight ratio is 1:10 ~ 128:5, weeds strain preventive effect is all more than 82%; Better to paddy field common weed preventive effect when promazine Sulfometuron Methyl pyribenzoxim weight ratio is 2:5 ~ 32:5, weeds strain preventive effect is all more than 93%; And promazine Sulfometuron Methyl pyribenzoxim weight ratio when being 8:5 preventive effect especially up to 98.07%.Illustrate thus, promazine Sulfometuron Methyl pyribenzoxim weight ratio is within the scope of 1:10 ~ 128:5, and grass family, broad-leaved and the sedge weed common to paddy field have preventive effect, and this herbicidal composition is to rice safety.
Prevent and kill off paddy field weed field control effectiveness test II:
1, test process
(1) 5% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules (8:5) 130g/ mu
(2) 65% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules (8:5) 10g/ mus
(3) 80% promazine Sulfometuron Methyl pyribenzoxim water dispersible granules (8:5) 8.125g/ mus
3 process are established in test, repeat for 4 times, totally 12 process communities, and often process plot area 20 square metres, random district group arranges.(1) ~ (3) promazine Sulfometuron Methyl pyribenzoxim water dispersible granules is reagent agent, and every mu is watered 30 kilograms, adopts 552 third type sprayers (0.7mm aperture) even spraying.Field main weeds has wild water chestnut, angustifolia arrowhead herb, barnyard grass, needle spikesedge herb, difformed galingale herb, flat stalk Fischer grass etc.
2, pilot project and method
Herbicidal effect: every community gets 4 points at random, investigates 1/4 square metre at often, and after dispenser, 20 days investigation weed control efficacies, record weeds kind and strain number respectively, 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 pyribenzoxim water dispersible granules (8:5)
(2) 65% promazine Sulfometuron Methyl pyribenzoxims water dispersible granules (8:5)
(3) 80% promazine Sulfometuron Methyl pyribenzoxims water dispersible granules (8:5)
As shown in Table 9, when the weight ratio of promazine Sulfometuron Methyl and pyribenzoxim is 8:5, the promazine Sulfometuron Methyl pyribenzoxim water dispersible granules of different content to common weed strain preventive effect all more than 95%, when showing that promazine Sulfometuron Methyl and pyribenzoxim weight ratio are optimal proportion, the herbicidal composition of different activities component content all has significant preventive effect to paddy field weed.
In sum, instant component is reasonable, preventive effect is better than activity when each component is used separately, good preventive effect is all had to grassy weed, broad leaved weed and sedge weed, expand control of weeds spectrum, delay the generation of herbicide resistance, to crop safety, meet the security requirement of pesticidal preparations.
Claims (6)
1., containing a herbicidal composition for promazine Sulfometuron Methyl and pyribenzoxim, it is characterized in that said composition with promazine Sulfometuron Methyl and pyribenzoxim for active ingredient, described active ingredient weight ratio is: promazine Sulfometuron Methyl: pyribenzoxim=1:10-128:5.
2. herbicidal composition according to claim 1, is characterized in that active ingredient weight ratio is: promazine Sulfometuron Methyl: pyribenzoxim=2:5-32:5.
3. herbicidal composition according to claim 2, is characterized in that active ingredient weight ratio is: promazine Sulfometuron Methyl: pyribenzoxim=8:5.
4. the herbicidal composition according to any one of claim 1-3, 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 any one formulation agriculturally allowed.
6. herbicidal composition according to claim 1, is characterized in that for preventing and kill off paddy field weed.
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| CN104522024A (en) * | 2014-12-22 | 2015-04-22 | 广东中迅农科股份有限公司 | Weed control composition containing propyrisulfuron and pyribenzoxim |
| CN104585208B (en) * | 2014-12-22 | 2018-06-19 | 广东中迅农科股份有限公司 | The Herbicidal combinations of promazine Sulfometuron Methyl and pyribenzoxim and fenoxaprop |
| GB2534230B (en) * | 2015-01-19 | 2019-06-12 | Rotam Agrochem Int Co Ltd | A herbicidal composition and method of controlling plant growth |
| CN104663698A (en) * | 2015-02-12 | 2015-06-03 | 海利尔药业集团股份有限公司 | Weeding composition containing pyribenzoxim and propoxycarbazone-sodiurn |
| CN104824001A (en) * | 2015-05-13 | 2015-08-12 | 广东中迅农科股份有限公司 | Herbicidal composition containing propyrisulfuron, cyhalofop-butyl and saflufenacil |
| CN104886099A (en) * | 2015-06-17 | 2015-09-09 | 广东中迅农科股份有限公司 | Weeding composition for rice field |
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| CN101292658A (en) * | 2002-11-21 | 2008-10-29 | 辛根塔参与股份公司 | Herbicidal composition |
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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 of controlling weed with the same |
| CN101292658A (en) * | 2002-11-21 | 2008-10-29 | 辛根塔参与股份公司 | Herbicidal composition |
| CN102027942A (en) * | 2010-12-30 | 2011-04-27 | 苏州富美实植物保护剂有限公司 | Compounded herbicide composition for rice field |
| CN103271060A (en) * | 2013-06-05 | 2013-09-04 | 江苏龙灯化学有限公司 | Synergistic weeding composition |
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