CN106417366A - Bactericidal composition containing iodine as well as preparation and application thereof - Google Patents
Bactericidal composition containing iodine as well as preparation and application thereof Download PDFInfo
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- CN106417366A CN106417366A CN201610724339.5A CN201610724339A CN106417366A CN 106417366 A CN106417366 A CN 106417366A CN 201610724339 A CN201610724339 A CN 201610724339A CN 106417366 A CN106417366 A CN 106417366A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/12—Iodine, e.g. iodophors; Compounds thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/46—N-acyl derivatives
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/36—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom five-membered rings
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/54—1,3-Diazines; Hydrogenated 1,3-diazines
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
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- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
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- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a bactericidal composition containing iodine as well as a preparation and application thereof. The bactericidal composition comprises first components and second components, wherein the first components are iodine and iodate; the second components are selected from one or more of tuzet, formaldehyde, mancozeb, carbendazim, thiophanate methyl, chlorothalonil, metalaxyl, triadimefon, carbendazim, thiophanate, chlorothalonil, Genmeiling, diniconazole, propiconazole, iprodione, fludioxonil, difenoconazole, propiconazole, flusilazole, pyraclostrobin, azoxystrobin and boscalid; the mass ratio of the first components to the second components is (0.01-10) to 1. The bactericidal composition containing iodine, which is provided by the invention, can achieve the effect of effectively improving the disease resistance of crops to sclerotium rolfsii.
Description
Technical field
The present invention relates to pesticide chemical field is and in particular to a kind of bactericidal composition containing iodine, preparation and its application.
Background technology
Southern blight is the important disease generally occurring on crops.Morbidity plant has 62 sections kind more than 200, including draft and wood
This plant, serious loss late of falling ill is up to more than 50%.The tomato of main harm Solanaceae, eggplant, capsicum, tobacco and potato
Deng；The more beans of pulse family, soybean, Kidney bean, peanut etc.；Pumpkin cucurbitaceous, watermelon and muskmelon etc., grass family of causing harm seldom causes extremely
Strain.Report has hawthorn, water caltrop, clover, konjaku, vanilla, vanilla, Kidney bean, tea shoot, apple, mulberry, clover, stone in recent years
The crop southern blight such as pomegranate, dewdrop grass, beanpod has different degrees of generation in different regions.
Southern blight usually occurs in rhizome portion or the basal part of stem of nursery stock.Susceptible rhizome portion cortex gradually becomes brown necrosis,
Serious cortex rots.After hazard of plant, the absorption of impact moisture and nutrient, so that undergrowth, overground part blade diminishes
Huang, branch shortened internodes, when serious, branches and leaves are wilting, when scab ring stem one Zhou Houhui leads to complete stool withered.
Tuzet, formaldehyde, Mancozeb, carbendazim, thiophanate methyl, Bravo, metalaxyl, triadimefon, carbendazim, support
Cloth Tianjin, Bravo, head mold spirit, olefin conversion, enemy power take off, iprodione, fludioxonil, Difenoconazole, propiconazole, Flusilazole, pyrazoles
It is known that kresoxim-methyl, Fluoxastrobin, Boscalid have certain preventive effect to southern blight, but southern blight is to the resistance of these medicaments gradually
Strengthen, worse to the preventive effect using the resistant strain producing after these medicaments above-mentioned in a large number.
Content of the invention
In view of this, the application provides a kind of bactericidal composition containing iodine, preparation and its application, said composition and its preparation
The resistance against diseases to southern blight for the crops can be significantly improved.
For solving above technical problem, the technical scheme that the present invention provides is to provide a kind of bactericidal composition containing iodine, should
Bactericidal composition includes the first component and the second component, and described first group is divided into iodine and iodate, and described second group is divided into agricultural chemicals
Conventional systemic fungicide on；Described first component is 0.01 10 with the mass ratio of the second component:1.
Preferably, described first component and the mass ratio of the second component are 0.1 10:1.
Preferably, the quality of described first component is 0.01% the 15% of described bactericidal composition gross mass；Described
The quality of two components is 0.01% the 85% of described bactericidal composition gross mass.
It is furthermore preferred that the quality of described first component is 0.1% the 15% of described bactericidal composition gross mass；Described
The quality of two components is 1% the 85% of described bactericidal composition gross mass.
It is furthermore preferred that the quality of described first component is 1% the 5% of described bactericidal composition gross mass；Described second
The quality of component is 10% the 40% of described bactericidal composition gross mass.
Preferably, described first group is selected from iodine, Potassiumiodate, hypoiodous acid potassium, sodium iodate, one kind of hypoiodous acid sodium or several
Kind.
It is furthermore preferred that described first group is selected from one or more of iodine, Potassiumiodate and hypoiodous acid potassium.
In application scheme, iodine is very active element, and the permeability of iodine and oxidisability are very strong, and iodine can readily penetrate through carefully
Cell wall is moreover it is possible to the active gene of oxidation pathogenic microorganism magma albumen, and is combined with the amino of protein molecule and rear makes its egg
White matter denaturation precipitates, and causes microorganism dead.Hypoiodous acid has very strong oxidation, is wide spectrum, efficient, quick-acting sterilizations
Agent, can effectively kill the pathogenic microorganisms such as most bacterial propagule, gemma, virus, fungi, protozoon, bacteriophage.
Iodate sprays in plant surface, enters in plant body, has stronger oxidation, can kill pathogen, also
Former product iodine and hypoiodite can continue to play the drug effect killing pathogenic microorganism.Hydriodate, such as KI, sodium iodide are met
Iodine can be converted into oxidant it is also possible to increase the solvability of iodine iodine in water and in the cell liquid of plant.Iodine is being planted
Hypoiodite can also be converted in object play a role.
Preferably, described second group be selected from Tuzet, formaldehyde, Mancozeb, carbendazim, thiophanate methyl, Bravo,
Metalaxyl, triadimefon, carbendazim, thiophanate, Bravo, head mold spirit, olefin conversion, enemy power take off, iprodione, fludioxonil, phenylate first
One or more of ring azoles, propiconazole, Flusilazole, pyraclostrobin, Fluoxastrobin, Boscalid.
It is furthermore preferred that described second group is selected from olefin conversion and/or fludioxonil.
Tuzet, formaldehyde, Mancozeb, carbendazim, thiophanate methyl, Bravo, metalaxyl, triadimefon, carbendazim, support
Cloth Tianjin, Bravo, head mold spirit, olefin conversion, enemy power take off, iprodione, fludioxonil, Difenoconazole, propiconazole, Flusilazole, pyrazoles
Kresoxim-methyl, Fluoxastrobin, Boscalid are all wide-spectrum bactericides, and are all systemic fungicides, and systemic fungicide can be planted
Thing leaf, stem, root, neutron absorption enter in plant body, through plant sap transporting, spread, retain or produce metabolin, can prevent and treat one
It is deep in plant body or disease in seed endosperm, do not entered by the dip-dye of pathogen or to susceptible plant with cover crop
Row treatment, therefore has treatment and protective effect.These bactericide have certain preventive effect to southern blight, but southern blight is to these
The resistance of medicament is gradually strengthened, worse to the preventive effect using the resistant strain producing after these medicaments in a large number.
The present invention also provides a kind of bactericide containing iodine, and said preparation is by bactericidal composition and agronomically acceptable auxiliary agent group
Become.
Preferably, the bactericide formulation containing iodine can for missible oil, direct sprayable solution, can dilute solution, can diluting emulsion,
Wettable powder, soluble powder, pulvis, granule or microcapsule formulations.
Wherein, the gross mass of the described bactericidal composition in the described bactericide containing iodine is described preparation gross mass
1% 50%.
Preferably, the gross mass of the described bactericidal composition in the described bactericide containing iodine is described preparation gross mass
1%-20%.
Wherein, if the described bactericide containing iodine is in a kind of form of concentrate it is desirable to dilute with water before use,
It will comprise the active ingredient than the composition higher amount being ready for using without dilution.
The present invention also provides a kind of application improving the disease resistance to southern blight for the crops for bactericidal composition containing iodine.
Preferably, described crops are the crops such as Solanaceae, pulse family, Curcurbitaceae.
Preferably, described Solanaceae crops include tomato, eggplant, capsicum, tobacco and potato；Described legume includes
More beans, soybean, Kidney bean, peanut；Described ground family crop includes pumpkin, watermelon and muskmelon.
The specific embodiment of plant growth regualting composition preparation of the present invention is, will be containing iodine and its iodate
Mix with described auxiliary agent with the bactericidal composition of conventional bactericide in Pesticide Science, pulverize and/or stirring and dissolving.Additionally, also
Preparation of preparation can be carried out using surface active cpd (surfactant), wherein surface active cpd be have good emulsification,
The nonionic of dispersion and wettability, cation, anion and/or amphoteric surfactant and surfactant mixture.
The bactericide commonly used on the market at present has certain preventive effect to southern blight, but the resistance to these medicaments for the southern blight
Gradually strengthen, worse to the preventive effect using the resistant strain producing after these medicaments in a large number.There is presently no an iodine and bactericide
It is incorporated as the case of bactericidal composition, the bactericide containing iodine is used together by the present invention with these common fungicides, Ke Yixian
Write and strengthen the preventive effect to southern blight for the medicament.
The present invention mixes administration iodine or iodate with conventional systemic fungicide in Pesticide Science, can by experimental data
To find out, the two mixing administration ratio is used alone iodine or is individually to be significantly improved using common fungicide bactericidal effect, when
First group is divided into iodine, and second group is divided into effect during fludioxonil best.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, with reference to specific embodiment pair
The present invention be described in further detail but it is to be understood that these descriptions be simply further illustrate the present invention feature and
Advantage rather than the restriction to patent requirements of the present invention.
In order to realize foregoing invention purpose, the present invention provides technical scheme below：
A kind of bactericidal composition containing iodine, this bactericidal composition includes the first component and the second component, and first group is divided into iodine
And iodate, second group of mass ratio being divided into conventional systemic fungicide in Pesticide Science, described first component and the second component
For 0.01 10:1 it is preferred that described first component is 0.1 10 with the mass ratio of the second component:1.
Wherein, first group of bactericidal composition is selected from iodine, Potassiumiodate, hypoiodous acid potassium, sodium iodate, one kind of hypoiodous acid sodium
Or it is several.
Wherein, in bactericidal composition second group be selected from Tuzet, formaldehyde, Mancozeb, carbendazim, thiophanate methyl,
Bravo, metalaxyl, triadimefon, carbendazim, thiophanate, Bravo, head mold spirit, olefin conversion, enemy power take off, iprodione, fludioxonil,
One or more of Difenoconazole, propiconazole, Flusilazole, pyraclostrobin, Fluoxastrobin, Boscalid.
In some embodiments of the invention, described first group is selected from iodine and/or Potassiumiodate；
In some embodiments of the invention, described second group is selected from olefin conversion and/or fludioxonil.
According to the present invention, the quality of described first component is 0.01% the 10% of described bactericidal composition gross mass, excellent
Elect 0.1% 10% as, more preferably 1% 5%；The quality of described second component is described bactericidal composition gross mass
0.01% 80%, preferably 1% 50%, more preferably 10% 40%.
According to method known in those skilled in the art, the present invention contains the bactericidal composition of the first component and the second component
During application, it is equipped with acceptable auxiliary material in Pesticide Science and forms different bactericide.Described bactericide formulation is missible oil, directly may be used
Spray solution, can dilute solution, can diluting emulsion, wettable powder, soluble powder, pulvis, granule or microcapsule formulations.System
Agent, using well known to a person skilled in the art method preparation, bactericide is mixed with adjuvant acceptable in Pesticide Science, pulverizes
And/or stirring and dissolving, also additionally can carry out preparation of preparation using surface active cpd (surfactant).
Preferably, surface active cpd is that have the well nonionic of emulsification, dispersion and wettability, cation, the moon
Ion and/or amphoteric surfactant and surfactant mixture.
In described preparation, the mass percent of the described bactericidal composition containing iodine is the 1%- of described preparation gross mass
50%, more preferably 1%-20%.If described preparation is in a kind of form of concentrate it is desirable to be incited somebody to action with water before use
Its dilution.
Present invention also offers described bactericidal composition is in the application strengthening the disease resistance to southern blight for the crops.Affiliated agriculture
Crop is the crops such as Solanaceae, pulse family, Curcurbitaceae.
Iodine is very active element, and the permeability of iodine and oxidisability are very strong, and iodine can readily penetrate through cell membrane moreover it is possible to oxidation is sick
The active gene of pathogenic microorganism magma albumen, and be combined with the amino of protein molecule rear make its protein denaturation precipitation, cause
Make microorganism dead.Hypoiodous acid has very strong oxidation, is wide spectrum, efficient, quick-acting bactericide, can effectively kill big portion
Point bacterial propagule, gemma, virus, fungi, protozoon, the pathogenic microorganism such as bacteriophage.
Iodate sprays in plant surface, enters in plant body, has stronger oxidation, can kill pathogen, also
Former product iodine and hypoiodite can continue to play the drug effect killing pathogenic microorganism.Hydriodate, such as KI, sodium iodide are met
Iodine can be converted into oxidant it is also possible to increase the solvability of iodine iodine in water and in the cell liquid of plant.Iodine is being planted
Hypoiodite can also be converted in object play a role.
The present inventor is applied it is experimentally confirmed that mixed iodine or iodate with conventional bactericide in Pesticide Science through substantial amounts of
With the two antibiotic property to crop can be given full play to, and the ability that crop resists southern blight is remarkably reinforced.
Embodiment 1
Preparation method：By iodine with after ethanol dispersion, after white carbon absorption, with olefin conversion, the contracting of alkylnaphthalene sulfonate formaldehyde
Compound (dispersant), sodium alkyl benzene sulfonate, diatomite mix air-flow crushing.
Embodiment 2
Preparation method：By iodine with after ethanol dispersion, after white carbon absorption, with KI, metalaxyl, methyl naphthalene sulfonic acid
Salt, AEO, diatomite mix air-flow crushing.
Embodiment 3
Preparation method：By hypoiodous acid potassium, fludioxonil, alkylnaphthalene sulfonate formaldehyde condensation products, sodium alkyl benzene sulfonate, diatomite
Mix air-flow crushing.
Embodiment 4
Preparation method：Potassiumiodate, hypoiodous acid potassium are dissolved in water, add polycarboxylate, alkylphenol-formaldehyde resin polyoxyethylene
Ether sulfate, xanthans, Sodium Benzoate, aluminium-magnesium silicate obtain aqueous phase after being uniformly dispersed, and Fluoxastrobin active compound is added aqueous phase, dispersion
Uniformly enter in sand mill sand milling afterwards to D98Can discharging unlap less than 5um.
Embodiment 5
Preparation method：Potassiumiodate, hypoiodous acid potassium are dissolved in water, add polycarboxylate, alkylphenol-formaldehyde resin polyoxyethylene
Ether sulfate, xanthans, Sodium Benzoate, aluminium-magnesium silicate obtain aqueous phase after being uniformly dispersed, and difenoconazole technical material is added aqueous phase,
Sand milling is entered in sand mill to D after being uniformly dispersed98Can discharging unlap less than 5um.
Embodiment 5
Preparation method：Potassiumiodate, hypoiodous acid potassium are dissolved in water, add polycarboxylate, SOPA, xanthans, Sodium Benzoate, silicon
Sour magnalium obtains aqueous phase after being uniformly dispersed, and difenoconazole technical material is added aqueous phase, enters sand milling in sand mill after being uniformly dispersed
To D98Can discharging unlap less than 5um.
Embodiment 6
Folding basal part of the ear southern blight preventing and treating field control effectiveness test
The Sclerotiumrolfsii cultivated in PDA culture medium sclerotium is seeded in the soil of folding basal part of the ear root, 5 bacterium of every plant of inoculation
Core, keeps field higher levels of humidity after inoculation, starts within two days after inoculation dispenser, and every 7 days with a medicine, continuous use 3 times.Each process
If 3 repetitions, 50 plants of every cell, random alignment, 7 days investigation state of an illness after each medicine.
Table 1 folding basal part of the ear field efficacy experimental data
By experiment as can be seen that being divided into iodine when first group, second group when being divided into fludioxonil, when iodine and fludioxonil mass ratio
For 1:When 0.4, preferably, preventive effect can reach more than 98% to the effect of the opposing southern blight of this bactericidal composition doubling basal part of the ear, this
Significantly improve the disease resistance of the folding basal part of the ear.
Embodiment 7
Folding basal part of the ear southern blight preventing and treating field control effectiveness test
The Sclerotiumrolfsii cultivated in PDA culture medium sclerotium is seeded in the soil of folding basal part of the ear root, 5 bacterium of every plant of inoculation
Core, keeps field higher levels of humidity after inoculation, starts within two days after inoculation dispenser, and every 7 days with a medicine, continuous use 3 times.Each process
If 3 repetitions, 50 plants of every cell, random alignment, 7 days investigation state of an illness after each medicine.
Table 2 folding basal part of the ear field efficacy experimental data
By experiment as can be seen that being divided into Potassiumiodate when first group, second group when being divided into fludioxonil, when Potassiumiodate is (with iodine
Element meter) with fludioxonil mass ratio be 1:When 0.4, the effect of the opposing southern blight of this bactericidal composition doubling basal part of the ear preferably, is prevented
Effect can reach more than 98% hence it is evident that improve the disease resistance of the folding basal part of the ear.
Embodiment 8
Seedling blight of red pepper field control effectiveness test
The Sclerotiumrolfsii cultivated in PDA culture medium sclerotium is seeded in the soil of capsicum root, 5 sclerotium of every plant of inoculation,
Keep field higher levels of humidity after inoculation, start within two days after inoculation dispenser, every 7 days with a medicine, continuous use 3 times.Each process sets 3
Secondary repetition, 50 plants of every cell, random alignment, 7 days investigation state of an illness after each medicine.
Table 3 capsicum field efficacy experimental data
From above experiment as can be seen that when first group is divided into iodine, second group when being divided into fludioxonil, when iodine and fludioxonil quality
Than for 1:When 0.4, the effect of the opposing southern blight to crops for this bactericidal composition is apparently higher than being used alone iodine or cough up bacterium
Nitrile, illustrates that the two is used in mixed way with compound synergic effect, preventive effect can reach more than 99% hence it is evident that improve the opposing of capsicum
The ability of southern blight.
Embodiment 9
Seedling blight of red pepper prevents and treats field control effectiveness test
The Sclerotiumrolfsii cultivated in PDA culture medium sclerotium is seeded in the soil of folding basal part of the ear root, 5 bacterium of every plant of inoculation
Core, keeps field higher levels of humidity after inoculation, starts within two days after inoculation dispenser, and every 7 days with a medicine, continuous use 3 times.Each process
If 3 repetitions, 50 plants of every cell, random alignment, 7 days investigation state of an illness after each medicine.
Table 4 folding basal part of the ear field efficacy experimental data
From above experiment as can be seen that when first group is divided into Potassiumiodate, second group when being divided into fludioxonil, when Potassiumiodate (with
I meter) with fludioxonil mass ratio be 1:When 0.4, the effect of the opposing southern blight to capsicum for this bactericidal composition apparently higher than
Be used alone Potassiumiodate or fludioxonil, illustrate the two be used in mixed way with compound synergic effect, preventive effect can reach 99% with
Above hence it is evident that improve the ability of the opposing southern blight of capsicum.
The above is only the preferred embodiment of the present invention it is noted that above-mentioned preferred embodiment be not construed as right
The restriction of the present invention, protection scope of the present invention should be defined by claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, these change
Enter and retouch also to should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of bactericidal composition containing iodine is it is characterised in that described bactericidal composition includes the first component and the second component, institute
State first group and be divided into iodine or iodate, described second group is divided into selected from Tuzet, formaldehyde, Mancozeb, carbendazim, methyl Tobe
Tianjin, Bravo, metalaxyl, triadimefon, carbendazim, thiophanate, Bravo, head mold spirit, olefin conversion, enemy's power take off, iprodione, cough up bacterium
One or more of nitrile, Difenoconazole, propiconazole, Flusilazole, pyraclostrobin, Fluoxastrobin, Boscalid；Described first
Component is (0.01 10) with the mass ratio of the second component:1.
2. bactericidal composition according to claim 1 is it is characterised in that the mass ratio of described first component and the second component
For (0.1 10):1.
3. bactericidal composition according to claim 1 is it is characterised in that described first group is selected from iodine, Potassiumiodate, secondary iodine
Sour potassium, sodium iodate, hypoiodous acid sodium one or more.
4. bactericidal composition according to claim 3 is it is characterised in that described first group is selected from iodine, Potassiumiodate, secondary iodine
One or more of sour potassium.
5. bactericidal composition according to claim 1 is it is characterised in that described second group is selected from olefin conversion or coughs up bacterium
Nitrile.
6. a kind of bactericidal composition preparation containing iodine is it is characterised in that described preparation is described in any one of claim 16
Bactericidal composition and agronomically acceptable auxiliary agent composition.
7. bactericide according to claim 6 is it is characterised in that the quality of described bactericidal composition is the total matter of described preparation
1% the 50% of amount.
8. application in preventing and treating crops southern blight for the bactericidal composition described in any one of claim 15.
9. application according to claim 8 is it is characterised in that described crops are Solanaceae, pulse family, Curcurbitaceae crops.
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