CN107306982A - A kind of microbicide compositions and preparation method and application - Google Patents
A kind of microbicide compositions and preparation method and application Download PDFInfo
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- CN107306982A CN107306982A CN201710520714.9A CN201710520714A CN107306982A CN 107306982 A CN107306982 A CN 107306982A CN 201710520714 A CN201710520714 A CN 201710520714A CN 107306982 A CN107306982 A CN 107306982A
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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
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/12—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, neither directly attached to a ring nor the nitrogen atom being a member of a heterocyclic ring
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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
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
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- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention provides a kind of synergy fungicide composite and preparation method and application, effective medicinal ingredient of the composition is made up of polyoxin and Portugal's polyene sugar, wherein, the weight ratio of polyoxin and Portugal's polyene sugar is 5~10：0.1~5, prepared by hybrid mode, available for the agricultural chemicals for preparing preventing and treating spot defoliation；Polyoxin and Portugal's polyene sugar are compounded according to special ratios in the composition, Synergistic, and the spot defoliation effect such as preventing and treating apple tree is notable.
Description
Technical field
The present invention relates to technical field of pesticide, especially a kind of synergy fungicide composite and preparation method and application.
Background technology
Alternaria leaf spot of apple is a kind of as caused by infecting apple rod method (Alternaria mali Roberts)
Universal aeroborne disease, mainly infects blade and fruit, often results in serious harm.Since 1970s, I
This disease occurs in succession for some apple major production areas of state, wherein particularly tight with Bohai Sea Gulf and the morbidity of the Big Apple producing region of the ancient riverbed of the Yellow River two
Weight.There is different degrees of generation in Shaanxi Province various regions in recent years.The general time disease index of the disease is about 10, the popular time
Disease refer to then may be up to 30-45.Occur serious orchard in disease, between 7-8 months sick leaf up to more than 90%, defoliation yield for 20%~
80%, weaken tree vigo(u)r, reduction yield, or even the fruit of next year can be influenceed to produce.The fruit for occurring disease can influence stored goods
Matter, easily rots.Alternaria leaf spot of apple mainly infects the newborn blade of fruit tree, causes early stage largely to fall leaves, influences the tree of fruit tree
The formation of gesture and bud, and influence the normal of fruit to expand and colour.At present, each apple producing region is equal in China for the disease
There is generation, and it is serious with the morbidity of the Early-medium maturing varieties such as new Red Star, loud, high-pitched sound, and the incidence of disease, 10%~40% or so, is influence apple
One of barrier factors of fruit good quality and high output.
The preventing and treating of current disease still depends on chemical prevention, due to lacking effective substitute, the selection of bactericide
It is restricted, result in the aggravation of bactericide resistance problem.Therefore, it is necessary to carry out disease comprehensive regulation means as early as possible, this is not only
It is even more to alleviate worry of the public to bactericide to reduce the resistance problem of bactericide to be.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of microbicide compositions of synergy.
Another technical problem to be solved by this invention is the preparation method for providing above-mentioned microbicide compositions.
Another technical problem to be solved by this invention is the application for providing above-mentioned microbicide compositions.
In order to solve the above technical problems, the technical scheme is that：
A kind of microbicide compositions, effective medicinal ingredient is made up of polyoxin and Portugal's polyene sugar, wherein, polyoxin and
The weight ratio of Portugal's polyene sugar is 5~10：0.1~5.
It is preferred that, above-mentioned microbicide compositions, the polyoxin and the sugared weight ratio of Portugal's polyene are 10：0.1~1.
It is preferred that, above-mentioned microbicide compositions, the polyoxin and the sugared weight ratio of Portugal's polyene are 10：0.5.
The preparation method of above-mentioned microbicide compositions, specific preparation process is as follows：
(1) weigh polyoxin by prescription amount and Portugal's polyene sugar is standby；
(2) it is polyoxin and Portugal's polyene sugar is well mixed, produce.
Application of the above-mentioned microbicide compositions in terms of the agricultural chemicals of preventing and treating spot defoliation is prepared.
It is preferred that, the application of above-mentioned microbicide compositions, the spot defoliation is alternaria leaf spot of apple.
It is a kind of to be used to preventing and treating the agricultural chemicals of spot defoliation, above-mentioned microbicide compositions comprising effective dose and for preparation
Carrier.
It is preferred that, the above-mentioned agricultural chemicals for being used to prevent and treat spot defoliation, microbicide compositions (polyoxin and Portugal's polyene
Sugar) account for agricultural chemicals weight percentage be 10~30%.
It is preferred that, the above-mentioned agricultural chemicals for being used to prevent and treat spot defoliation, the formulation of the agricultural chemicals is missible oil, aqua, solubility
Liquor, aqueous emulsion, microemulsion, wettable powder, soluble powder, water dispersible granules or dry suspending agent.
It is preferred that, the above-mentioned agricultural chemicals for being used to prevent and treat spot defoliation, used carrier species at least two, wherein at least one
It is surfactant.
It is preferred that, the above-mentioned agricultural chemicals for being used to prevent and treat spot defoliation is the sugared wettable of 10.5% polyoxin Portugal polyene
Pulvis, component and consumption are as follows by weight：
The above-mentioned carrier for being used to prevent and treat in the agricultural chemicals of spot defoliation can be solid or liquid, and be art technology
Material known to personnel, such as natural or regeneration mineral matter, organic solvent, solubilizer, surfactant (emulsifying agent, dispersant,
Wetting agent), thickener, binder, antifreezing agent；Wherein,
The organic solvent includes toluene, dimethylbenzene, mixed benzene, isopropanol, butanol, ethylene glycol, diethylene glycol (DEG), triethylene glycol, third
Glycol, glycerine, sorbierite, phenmethylol, cyclohexanol, and acetone, methyl iso-butyl ketone (MIBK), cyclohexanone, dimethylformamide, two
Methyl sulfoxide, pyrrolidones, dichloromethane, chloroform, carbon tetrachloride, dimethyldecamide, 100# solvent naphthas, 150# solvent naphthas,
200# solvent naphthas, vegetable oil, methyl oleate, sec-Butyl Acetate.It can be used alone, two or more can also be used in mixed way.If with
Water makees diluent, and organic solvent can also serve as solubilizer, antifreezing agent.
The emulsifying agent can be non-ionic or ionic.For example, lauryl sodium sulfate, secondary alkyl polyoxy second
Alkene ether sodium sulfate, neopelex, calcium dodecyl benzene sulfonate, polyoxyethylene fatty acid ester, polyoxyethylene fatty alcohol
Ether, Polyoxyethylene fatty ammonia, or directly use commercially available emulsifying agent, such as agriculture breast 0201B, agriculture breast 0203B.It can be used alone,
Also two or more it can be used in mixed way.
The dispersant and wetting agent can be sodium lignin sulfonate, pull open powder, calcium lignosulfonate and laurate sulphur
Sour sodium, alkylol polyoxyethylene base ether sodium sulfate, octylphenol polyethylene oxyethylene group ether sulfate, alkylphenol-polyethenoxy base ether formaldehyde
Condensate sulfate, sodium alkyl sulfonate, neopelex, penetrating agent JFC, penetrant t, Tween 80, polysorbas20.Can be single
Solely use, two or more can also be used in mixed way.
Described adhesive or thickener can be, carboxymethyl cellulose, methylcellulose, polyvinyl alcohol, silicic acid, magnesium silicate
Aluminium, starch derivatives, dextrin, soybean protein, gelatine, sodium sulphate, gypsum, rosin, xanthans, gelatin, Arabic gum, polyethylene
Pyrrolidones, sodium alginate.It can be used alone, two or more can also be used in mixed way.
The disintegrant can be, ammonium sulfate, calcium chloride, magnesium chloride, aluminium chloride, bentonite, urea.It can be used alone,
Also two or more it can be used in mixed way.
Rock dust that the solid carrier can be naturally occurring, quartz, clay, montmorillonite, silica, diatom
Soil, float stone, gypsum, talcum, bentonite, kaolin, clay, white carbon and the mineral matter ground of synthesis, such as it is microdispersed
Silicic acid or aluminum oxide.Suitable particulate vector include crush and classification natural rock, for example calcite, marble, float stone,
Synthesis particle that sepiolite, dolomite and the powder by organic matter and inorganic matter are made etc..
Above-mentioned substance is known material and is that well known to a person skilled in the art material.
The beneficial effects of the invention are as follows：
Above-mentioned microbicide compositions, different dosage forms are prepared as by polyoxin and Portugal's polyene sugar according to special ratios compounding
Spray crops after agricultural chemicals, dilution certain multiple, can the spot defoliation such as effectively preventing and treating apple-tree, make with notable Synergistic
With effect is used alone significantly with polyoxin or Portugal's polyene sugar of dosage relatively in complex composition, effectively can prevent and treat on crop
Plant epiphyte caused by disease, protrude especially for disease effect caused by alternaria leaf spot of apple, while strengthening crop
Resistance, effectively facilitate plant growth, branch, bloom, result, and dosage can be significantly reduced, effectively save drug cost.
Because the mode of action of two kinds of biological pesticides is different, the mechanism of action of polyoxin is interference germ cell membrane chitin
The biosynthesis of matter, prevents somatic cells wall to cause germ dead from carrying out biosynthesis；It is that one kind is being posted plus Portugal's polyene sugar
The exciton of inducible disease resistance of plant from pathogen in main cause of disease Interaction, can induce crop to produce excellent broad spectrum
Disease resistance, therefore said composition can have concurrently it is quick-acting and extension holding effect effects.Simultaneously as two kinds of compounds are all biological
Agricultural chemicals, will not develop immunity to drugs, low toxicity noresidue, and quick-acting and lasting effect are good, and production cost is low, can persistently use for a long time；It is right
Crop will not produce inhibitory action, environmentally friendly.
Embodiment
Technical scheme of the present invention is further described with reference to specific embodiment.
Percentage in embodiment is weight percentage, and the treatment dosage of bioactivity is active constituent content.
The preparation of missible oil
Embodiment 1 (the sugared missible oil of 10.1% polyoxin Portugal polyene)
By recipe requirements, be separately added into solvent, active compound, emulsifying agent, well mixed, if necessary can slightly heat of solution, produce
To transparence missible oil.
The preparation of aqua
Embodiment 2 (the polyene syrup agent of 20% polyoxin Portugal)
By recipe requirements, be separately added into deionized water, active compound, emulsifying agent, well mixed, if necessary can slightly heat of solution,
Obtain transparence aqua.
Wettable powder is prepared
Embodiment 3 (the sugared wettable powder of 30% polyoxin Portugal polyene)
By recipe requirements, active compound, various auxiliary agents and filler etc. are sufficiently mixed, crushed through airslide disintegrating mill, until particle
Fineness reaches wettable powder standard value (fineness is more than 325 mesh).
Embodiment 4 (the sugared wettable powder of 10.5% polyoxin Portugal polyene)
By recipe requirements, active compound, various auxiliary agents and filler etc. are sufficiently mixed, crushed through airslide disintegrating mill, until particle
Fineness reaches wettable powder standard value (fineness is more than 325 mesh).
Aqueous emulsion is prepared
Embodiment 5 (10% polyoxin Portugal polyene syrup emulsion)
Active compound, solvent, emulsifying agent are added together, make to be dissolved into homogeneous transparent oil phase, water, propane diols etc. are mixed one
Rise, as homogeneous aqueous phase.Under high velocity agitation, aqueous phase is added to oil phase or oil phase is added to aqueous phase, form dispersiveness good
Good aqueous emulsion.
Microemulsion is prepared
Embodiment 6 (the sugared microemulsion of 15% polyoxin Portugal polyene)
Active compound, solvent, emulsifying agent are added together, make to be dissolved into homogeneous transparent oil phase, water, ethylene glycol etc. are mixed one
Rise, as homogeneous aqueous phase.Under agitation, aqueous phase is slowly added to oil phase, continues stirring and form homogeneous transparent as microemulsion.
The preparation of water dispersible granules
Embodiment 7 (18% polyoxin Portugal polyene syrup dispersible granule)
Active compound and powder carrier, wetting agent, dispersant, disintegrant etc. are mixed in proportion, through airslide disintegrating mill powder
It is broken, add a certain amount of moisture content and mediate, granulated in comminutor, then graininess production is produced (by screen cloth scope) through drying, screening
Product.
The preparation of suspending agent
Embodiment 8 (the sugared suspending agent of 20.4% polyoxin Portugal polyene)
By recipe requirements, using water as medium, active compound, dispersant, suspending agent and antifreezing agent etc. are added in sand milling kettle, carried out
It is sanded, reaches and suspending agent is made after regulation fineness.
The preparation of soluble liquid
Embodiment 9 (the sugared soluble liquid of 30% polyoxin Portugal polyene)
By recipe requirements, be separately added into solvent, active compound, emulsifying agent, well mixed, if necessary can slightly heat of solution, produce
It is soluble liquid to transparence liquid.
The preparation of soluble powder
Embodiment 10 (the sugared effervescent tablet of 11% polyoxin Portugal polyene)
After by formula, each component is well mixed, crushed through airslide disintegrating mill, until grain fineness reaches soluble powder
Standard is product (fineness is more than 325 mesh).
Prescription analysis
Polyoxin (polyoxin) is the metabolite produced by streptomyces aureus, belongs to the sterilization of broad-spectrum antibiotics class
Agent.With preferable uptake and translocation effect.Its mechanism of action is to disturb the biosynthesis of germ cell membrane chitin, makes thalline thin
Cell wall, which can not carry out biosynthesis, causes germ dead.After germ tube and mycelia contact medicament, local bulkiness, rupture, spilling cell
Inclusion, and normal development is unable to, cause death.Therefore also have and suppress the effect that germ production spore and scab expand.It is main to use
In preventing and treating alternaria leaf spot of apple, ring spot, Pear black spot, grape grey mould, strawberry, cucumber, the powdery mildew of muskmelon, downy mildew
The various crop disease of disease, black fleck disease of ginseng and Alternaria alternate etc. ten.
Portugal's polyene sugar can induce crop system to obtain the motivating factor of disease resistance, show distinctive biological activity：One
Aspect, can induce crop to produce the disease resistance of excellent broad spectrum, for virosis, can not only suppress mosaic virus etc. a variety of
The early stage of disease colonizes, breeds and extended, and can also be passivated the external virus original of crop, suppresses the long range extension of virus.
Portugal's polyene sugar, except in addition to having outstanding behaviours in terms of preventing and treating crop virosis, has many as biological pesticide in diseases prevention and disease-resistant aspect
The mechanism of kind, it can discharge a kind of signal, stimulate induction to make object and produce resistance；In addition, being used as crop growth regulator, moreover it is possible to
Promote crop cell activation, stimulating growth.Meanwhile, polyene sugar in Portugal's has direct killing action to crop pathogenses, on the one hand it
Germ cell surface can be directly adsorbed in, the Obstruct membrane of a floor height molecular substance is formed, nutriment is prevented to intracellular fortune
It is defeated；On the other hand it is directly to penetrate into germ cell body, directly upsets the normal physiological activity of cell.
Be found by experiment that, both synergistic effects be not it is simple plus and, but polyoxin disturbs disease to plant
During the biosynthesis of bacterium cell membrane chitin, Portugal's polyene sugar also assists in the killing action to germ, it is possible to accelerate this killing
Speed, while rapid induction plant produces resistance, greatly improves the immunity of plant, improves the lasting period, synergistic effect is obvious.
Embodiment 11
Polyoxin prevents and treats the field control effectiveness test of alternaria leaf spot of apple with the sugared compound drug of Portugal's polyene
Test place to be located in Yuncheng Wanrong County Jia Cun townshiies Tong Ai villages Cao Jia apple orchards, 3 mu of area, test sample
It is new Red Star to plant, and the age of tree is life in 21 years, and seeding row spacing 2.5m × 3m, soil types is that native Lou is native, and pH value is neutral, applies farm manure
2500kg, managerial skills are preferable.Embodiment 1~10, and 10% polyoxin WP and clear water, as control, reagent dosage is all pressed
According to 30g/ hectares of effective content dilution sprayings.Test method：Cell is arranged by random district's groups, per 2 plants of cell, is repeated 4 times, and is used
Singapore's profit agriculture HD-400 types knapsack hand sprayer carries out spraying treatment, and operating pressure is 0.4Mpa, injection diameter
1.20mm, every plant of 2L of spouting liquid.Test and start dispenser in early stage, dispenser in 10-14 days 1 time is spaced afterwards.Dispenser 4 times altogether.
Disease index=∑ (the sick numbers of sheets at different levels × relative value of series)/investigation total number of sheets/9 × 100.
Preventive effect (%)=(blank control after disease index/medicine of blank control disease index × medicine post processing before 1- medicines
The disease index of disease index/medicine pre-treatment) × 100.
Investigated after last time dispenser after 14 days, as a result such as table 1.
The polyoxin of table 1 and the sugared complex preparation preventing and treating alternaria leaf spot of apple effect data table of Portugal's polyene
Can be so that embodiment 1-10 compared with the control, there is different degrees of synergistic effect, illustrates that both are multiple from result of the test
With reasonable.The preventive effect of embodiment 4,7,6 be respectively 90.36%, 88.56%, 86.84% apparently higher than control 10% polyoxin can
WP.For the preventing and treating of orchard, meet organic food, pollution-free food using polyoxin and the sugared complex preparation of Portugal's polyene
(AA grades) technology, has broad application prospects.
It can be seen that, to agricultural, some are sick according to special ratios compounding for polyoxin and Portugal's polyene sugar in composition of the present invention
Evil has significant synergistic effect, particularly has special efficacy to alternaria leaf spot of apple, because its two kinds of main components are biological agriculture
Medicine, without any synthetics, using rear nontoxic residue-free, can effectively prevent the diseases such as alternaria leaf spot of apple, be that it is prevented
One new approach of offer is provided.
Embodiment 12
The sugared wettable powder of 10.5% polyoxin Portugal polyene and 10.5% polyoxin amino-oligosaccharide wettable powder
The field test of preventing and treating alternaria leaf spot of apple compares.
Subjects：Alternaria leaf spot of apple (Alternaria alternaria f.sp mali) trial crops are apple
Fruit tree, kind is Fuji apple.
Test site：The tested ground of Hebei province Changli County Changli fruit tree research is located at, alternaria leaf spot of apple is normal on the ground
Year occurs and heavier, and test tree kind is Fuji apple, and in disease phase progress occurs for the age of tree 9 years, 5 meters of line-spacing, 3 meters of spacing in the rows, experiment.
Test medicine：Sugared wettable powder (the polyoxin of 10.5% polyoxin Portugal polyene：Portugal polyene sugar=10:0.5)
With 10.5% polyoxin amino-oligosaccharide wettable powder (polyoxin：Amino-oligosaccharide=10:0.5)
Dosing and processing numbering such as table 2：
The reagent agent experimental design of table 2
Experimental plot random alignment, 3 trees of plot area, is repeated 4 times.Agent spraying machine is Su Nong board power sprayers, medicine
Agent is watered dilution spraying.
Spraying time and number of times：In on May 23rd, 2016, June 5, June 20, July 17, August 2 days and August 16
Day sprays 6 times altogether.Investigated three times altogether within 30th in May 23 (before medication) in 2016, June 30 and August.
Investigation method：Investigate per cell, every plant of point East, West, South, North, in five directions fix 2 young sprout (spring tips
And autumn growth), periodic investigation its whole blade, record total number of sheets, the sick number of sheets at different levels.Drug effect computational methods according to sick leaf rate (%)=
The sick number of sheets/investigation total number of sheets × 100.Disease index=∑ (the sick numbers of sheets at different levels × relative value of series)/investigation total number of sheets/9 ×
100。
Preventive effect (%)=(blank control after disease index/medicine of blank control disease index × medicine post processing before 1- medicines
The disease index of disease index/medicine pre-treatment) × 100.
Result of the test such as table 3：
Table 3 compares without the field test of chemical control alternaria leaf spot of apple
| Processing | The tip phase in spring, average disease referred to | Tip phase in spring average preventive effect | The autumn growth phase, average disease referred to | Autumn growth phase average preventive effect |
| 1 | 0.3 | 80.39 | 0.7 | 80.14 |
| 2 | 0.34 | 77.53 | 0.76 | 78.03 |
| 3 | 0.53 | 71.18 | 1.03 | 69.96 |
| 4 | 0.31 | 70.34 | 0.67 | 70.45 |
| 5 | 1.52 | 2.93 |
The result investigated from the tip phase in spring June 30 can be seen that when the disease of blank control refers to up to 1.52, resists 10.5% more
Tip spring, effect phase of sugared wettable powder 100mg/Kg, 84mg/Kg processing of mycin Portugal polyene is followed successively by 80.39% and 77.53%,
Higher than the preventive effect of 10.5% polyoxin amino-oligosaccharide wettable powder.
Can be seen that from 30 autumn growth phases of August investigation result, when the disease of blank control refer to for 2.93 when, anti-mildew more than 10.5%
The autumn growth phase effect of sugared wettable powder 100mg/Kg, 84mg/Kg processing of plain Portugal's polyene is followed successively by 80.14% and 78.03%, high
In the 69.96% and 70.45% of 10.5% polyoxin amino-oligosaccharide wettable powder.
As can be seen from the above results, polyoxin is different from the mechanism of action of Portugal's polyene sugar, increases under certain ratio
Effect is obvious, and better than the compounding of polyoxin and amino-oligosaccharide, synergy is protruded.
The above-mentioned detailed description that a kind of microbicide compositions and preparation method and application are carried out with reference to embodiment, be
It is illustrative rather than limited, several embodiments can be included according to limited scope, therefore do not departing from the present invention
Changing and modifications under general plotting, should belong within protection scope of the present invention.
Claims (10)
1. a kind of microbicide compositions, it is characterised in that：Effective medicinal ingredient is made up of polyoxin and Portugal's polyene sugar, wherein,
The weight ratio of polyoxin and Portugal's polyene sugar is 5~10：0.1~5.
2. microbicide compositions according to claim 1, it is characterised in that：The weight ratio of the polyoxin and Portugal's polyene sugar
For 10：0.1~1.
3. microbicide compositions according to claim 2, it is characterised in that：The weight ratio of the polyoxin and Portugal's polyene sugar
For 10：0.5.
4. the preparation method of microbicide compositions described in claim 1, it is characterised in that：Specific preparation process is as follows：
(1) weigh polyoxin by prescription amount and Portugal's polyene sugar is standby；
(2) it is polyoxin and Portugal's polyene sugar is well mixed, produce.
5. application of the microbicide compositions described in claim 1 in terms of the agricultural chemicals of preventing and treating spot defoliation is prepared.
6. the application of microbicide compositions according to claim 5, it is characterised in that：The spot defoliation is apple spot
Defoliation.
7. a kind of agricultural chemicals for being used to prevent and treat spot defoliation, it is characterised in that：Bactericide described in claim 1 comprising effective dose
Composition and the carrier for preparation.
8. it is used for the agricultural chemicals for preventing and treating spot defoliation according to claim 7, it is characterised in that：The microbicide compositions are accounted for
The weight percentage of agricultural chemicals is 10~30%.
9. it is used for the agricultural chemicals for preventing and treating spot defoliation according to claim 7, it is characterised in that：Used carrier species at least two
Kind, wherein at least one is surfactant.
10. it is used for the agricultural chemicals for preventing and treating spot defoliation according to claim 7, it is characterised in that：For anti-mildew more than 10.5%
The sugared wettable powder of plain Portugal's polyene, component and consumption are as follows by weight：
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