CN107535524A - The bactericidal composition of biological pesticide and its application - Google Patents
The bactericidal composition of biological pesticide and its application Download PDFInfo
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- CN107535524A CN107535524A CN201710539054.9A CN201710539054A CN107535524A CN 107535524 A CN107535524 A CN 107535524A CN 201710539054 A CN201710539054 A CN 201710539054A CN 107535524 A CN107535524 A CN 107535524A
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Abstract
The bactericidal composition of biological pesticide of the present invention and its application, it is related to a kind of bactericidal composition containing pythium oligadrum and Portugal's polyene sugar.Its purpose is to provide, a kind of drug effect lasting period is long, do not develop immunity to drugs, the bactericidal composition of the biological pesticide of safe noresidue and its application.The bactericidal composition of biological pesticide of the present invention includes active ingredient；The active ingredient includes：Mass ratio is 0.1~80:80~0.5 pythium oligadrum and Portugal's polyene sugar；Contain 5,000,000 pythium oligadrum spores in every gram of pythium oligadrum.Crops are sprayed after the bactericidal composition dilution certain multiple of the biological pesticide of the present invention, disease caused by a variety of fungies such as the late blight of crop, rot, damping-off, balck shank, virosis and virus can be effectively prevented and treated, pythium oligadrum and Portugal's polyene sugar show significant synergistic function during the preventing and treating to above-mentioned disease.The invention belongs to biological pesticide technical field.
Description
Technical field
The invention belongs to biological pesticide technical field, is related to a kind of Bactericidal composite containing pythium oligadrum and Portugal's polyene sugar
Thing.
Background technology
Chemical pesticide is that mankind's preventing and treating agricultural disease pest and weed is made that tremendous contribution.With the increase of population, grain yield
Also accordingly to increase.The main path that produces more food undoubtedly preferably is increase the yield per unit area.And improve the important technology of per unit area yield
Measure is exactly to use chemical pesticide.However, due to the toxicity of chemical pesticide, negative effect caused by it is also very serious.Such as
Agricultural chemicals is manufacturing, and transports of common occurrence with the report of person poultry poisoning's event caused in application.Farmland is rushed by rainwater
Brush, chemical pesticide then enter rivers, and then Marine Pollution.More importantly chemical pesticide residual exacerbates agricultural product quality and safety
Risk, threatened to mankind's health care belt.
With development in science and technology progress, reduction uses chemical pesticide, protects the cry of environment for human survival increasingly
Surging, research and development develop into domestic and international plant protection science worker's using biological pesticide preventing and treating diseases and pests of agronomic crop
One of important subject.Biological pesticide have the characteristics that safely, effectively, pollution-free noresidue, with preserving the ecological environment and society
The requirement that can be developed in harmony matches.From the perspective of environmental protection, biological pesticide is undoubtedly one of direction of Agrochemicals.
Pythium oligadrum (Pythium Oligandrum) is that a kind of very strong parasitism of aggressiveness present in nature is true
Bacterium, not only pathogenic effects can will not be produced to crop, and can also suppress or kill other causes in multiple kinds of crops rhizosphere colonization
Sick fungi and soil-borne pathogen, induction plant produce defense response, reduce the invasion of pathogen；Meanwhile caused by pythium oligandrum
Secretion and various enzymes, it is the good growth promoting activating agent of plant, crop root can be promoted to develop, improves Nutrient Absorption.It is few male rotten
Mould active compound content be generally 5,000,000 spores/gram, the present invention set by mass percent of this dose lonvestion active compound content as
100%.
Portugal's polyene sugar is a kind of exciting for inducible disease resistance of plant from pathogen in host's cause of disease Interaction
The factor, " two sugar " is commonly called as, is that a kind of international new bio newly developed lures resistance to sterilize, has in diseases prevention and disease-resistant aspect more
Kind mechanism, it can discharge a kind of signal, stimulate induction to make object and produce resistance；In addition, as crop growth regulator, moreover it is possible to
Promote crop cell activation, stimulating growth.Meanwhile Portugal's polyene sugar has direct killing action to crop pathogenses, on the one hand it
Germ cell surface can be directly adsorbed in, forms the Obstruct membrane of a floor height molecular substance, prevents nutriment 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.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of length of drug effect lasting period, do not develop immunity to drugs, safe noresidue
Biological pesticide bactericidal composition and its application.Specifically, it is pythium oligadrum and Portugal's polyene sugar is multiple according to a certain percentage
With processing creaming agent, aqua, soluble liquid, aqueous emulsion, microemulsion, wettable powder, suspending agent, effervescent tablet, micro- glue
Capsule suspending agent, water dispersible granules or dry suspending agent, crops are sprayed after diluting certain multiple, can effectively prevent and treat the late blight of crop
Disease caused by a variety of fungies such as disease, rot, damping-off, balck shank, virosis and virus, there is notable Synergistic to make
With.
The present invention relates to a kind of bactericidal composition of biological pesticide, the bactericidal composition includes active ingredient；
The active ingredient includes：Mass ratio is 0.1~80:80~0.5 pythium oligadrum and Portugal's polyene sugar；
Contain 5,000,000 pythium oligadrum spores in every gram of pythium oligadrum.
Preferably, the active ingredient accounts for 1wt%~80wt% of bactericidal composition.
Preferably, creaming agent, aqua, solubility can be prepared by appropriate amount of addition agent or carrier being added in the bactericidal composition
Liquor, aqueous emulsion, microemulsion, wettable powder, suspending agent, effervescent tablet, micro-capsule suspension, water dispersible granules or dry suspension
Agent.
Preferably, the bactericidal composition also includes at least two carriers, and wherein at least one is surfactant.
Carrier is solid or liquid, and be well known to a person skilled in the art material, such as natural or regeneration mineral matter,
Organic solvent, solubilizer, surfactant (including：Emulsifying agent, dispersant, wetting agent), thickener, binder, antifreezing agent.
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, dimethyloctanamide, 100# solvents
Oil, 150# solvent naphthas, 200# solvent naphthas, vegetable oil, methyl oleate, sec-Butyl Acetate.Can be used alone, also can two kinds and more than
It is used in mixed way.If making diluent with water, organic solvent can also serve as solubilizer, antifreezing agent.
The emulsifying agent is nonionic or ionic.For example, lauryl sodium sulfate, secondary alkyl polyoxyethylene ether
It is sodium sulphate, neopelex, calcium dodecyl benzene sulfonate, polyoxyethylene fatty acid ester, polyoxyethylene aliphatic alcohol ether, poly-
Oxygen ethene fatty amine, or directly use commercially available emulsifying agent, such as agriculture breast 0201B, agriculture breast 0203B, agriculture breast 2201.Can individually it make
With also can two kinds and use mixed above.
The dispersant and wetting agent be sodium lignin sulfonate, pull open powder, calcium lignosulfonate and sulfonate of laurate sodium sulphate,
Alkylol polyoxyethylene base ether sodium sulfate, octylphenol polyethylene oxyethylene group ether sulfate, alkylphenol-polyethenoxy base ether formaldehyde condensation
Thing sulfate, sodium alkyl sulfonate, neopelex, penetrating agent JFC, penetrant t, Tween 80, polysorbas20.Can individually it make
With also can two kinds and use mixed above.
Described adhesive or thickener are carboxymethyl cellulose, methylcellulose, polyvinyl alcohol, silicic acid, aluminium-magnesium silicate, shallow lake
Powder derivative, dextrin, soybean protein, gelatine, sodium sulphate, gypsum, rosin, xanthans, gelatin, Arabic gum, polyvinyl pyrrole
Alkanone, sodium alginate.It can be used alone, also can two kinds and use mixed above.
The disintegrant is ammonium sulfate, calcium chloride, magnesium chloride, aluminium chloride, bentonite, urea.It can be used alone, also can two
Kind and use mixed above.
The solid carrier is the rock dust, quartz, clay, montmorillonite, silica, diatomite, floating naturally occurred
Stone, gypsum, talcum, bentonite, kaolin, clay, white carbon and the mineral matter ground of synthesis, for example, microdispersed silicic acid or
Aluminum oxide.Suitable particulate vector includes natural rock crush and classification, such as calcite, marble, float stone, Hai Pao
Stone, dolomite and synthesis particle etc. made of the powder of organic matter and inorganic matter.Can be used alone, also can two kinds and the above mix
Close and use.
The invention further relates to a kind of application of the bactericidal composition of biological pesticide, the bactericidal composition is used to prevent and treat plant
Disease caused by the fungies such as late blight, rot, damping-off, balck shank, virosis or virus.
Inventor has found that pythium oligadrum and Portugal's polyene sugar compound to agricultural according to a certain percentage by many experiments
Disease has significant synergistic effect, has the characteristics of quick-acting is good, the lasting period is long, can reduce use cost, effectively solve plant
Disease caused by a variety of fungies such as late blight, rot, damping-off, balck shank, virosis and virus.
The bactericidal composition and its application difference from prior art of biological pesticide of the present invention are：
The present invention is compounded with pythium oligadrum and Portugal's polyene sugar, and complex composition gathers relative to pythium oligadrum or Portugal
Glycal, which is used alone, has notable synergistic effect, can effectively prevent and treat the plant late blight of crop, rot, damping-off, balck shank,
Disease caused by the fungies such as virosis or virus.Because two kinds of compounds are all biological pesticides, drug effect lasting period length, will not produce
Poisoning；It will not develop immunity to drugs, can continue to use for a long time；Inhibitory action will not be produced to crop；Safety, zero residual, to environment
It is friendly.It is different additionally, due to the mode of action of two kinds of biological pesticides：Pythium oligadrum is parasitic to pathogen, plays inhibitory action；
Direct killing action plus Portugal's polyene sugar to germ, and induce crop system to obtain the motivating factor of disease resistance, it can induce
Crop produces the disease resistance of excellent broad spectrum.Therefore said composition can have effect that is quick-acting and extending holding effect concurrently.Present invention combination
The synergistic effect of thing is notable, therefore significantly reduces dosage, effectively saves drug cost.
Embodiment
With following nonlimiting examples, the invention will be further described, and the percentage in embodiment is quality percentage
Than the treatment dosage of bioactivity is active constituent content.
The preparation of missible oil
Embodiment 1 (5% pythium oligadrum Portugal polyene sugar missible oil)
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.
Embodiment 2 (15% pythium oligadrum Portugal polyene sugar missible oil)
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.
Wettable powder is prepared
Embodiment 3 (50% pythium oligadrum Portugal polyene sugar wettable powder)
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 (20.5% pythium oligadrum Portugal polyene sugar wettable powder)
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% pythium oligadrum Portugal polyene syrup emulsion)
Active compound, solvent, emulsifying agent are added together, make to be dissolved into homogeneous transparent oil phase, by water, ethylene glycol, xanthans etc.
It is mixed, turns into homogeneous aqueous phase.Under high velocity agitation, aqueous phase is added to oil phase or oil phase is added to aqueous phase, formed and divided
Dissipate the good aqueous emulsion of property.
Microemulsion is prepared
Embodiment 6 (15% pythium oligadrum Portugal polyene sugar microemulsion)
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, turn into homogeneous aqueous phase.Under agitation, aqueous phase is slowly added to oil phase, it is microemulsion to continue stirring and form homogeneous transparent.
The preparation of water dispersible granules
Embodiment 7 (80% pythium oligadrum 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, be granulated in comminutor, then graininess production is produced (by screen cloth scope) through drying, screening
Product.The preparation of suspending agent
Embodiment 8 (25% pythium oligadrum Portugal polyene sugar suspending agent)
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, suspending agent is made after reaching regulation fineness.
The preparation of micro-capsule suspension
Embodiment 9 (10% pythium oligadrum Portugal polyene sugar micro-capsule suspension)
Pythium oligadrum Portugal polyene sugar is dissolved in solvent by recipe requirements, adds emulsifying agent, defoamer, part water
Stirring obtains oil-in-water emulsion in 20 minutes.Urea is mixed and dissolved with formalin, with sodium hydroxide solution adjust PH to
8.0, and obtain urea resin prepolymer solution in 70 DEG C of reaction certain times.Prepolymer solution is mixed with emulsion, uses hydrochloric acid
Solution regulation PH and heating cure certain time obtain microcapsule suspensions, addition wetting agent, dispersant, thickener stirring and dissolving
Micro-capsule suspension is made.
The preparation of effervescent tablet
Embodiment 10 (20% pythium oligadrum Portugal polyene sugar effervescent tablet)
After each component is well mixed by formula, female powder is made through air-flow crushing, uses double roller roller tablet press machine, dry method pressure
Effervescent tablet of the piece into monolithic weight 1g.
It is raw to survey embodiment experiment
Prevent and treat the rice seedling blight test of pesticide effectiveness
Experiment is carried out in a certain greenhouse in yushu city great Po towns with side coil.All processing without using strong seedling agent,
Only ammonium sulfate is sprayed with appropriate Diammonium phosphate (DAP), later stage.Plot area 5m2For 1 processing, arranged using random district's groups, repeat 4
Secondary, processing reagent dosage is divided into：20% 20 grams/ha of pythium oligadrum WP (wettable powder), 0.5% Portugal's polyene syrup agent are
0.75 gram/ha, embodiment 1~10 be 22.5 grams/ha.To create favourable onset condition, keep as far as possible it is interim compared with
Low temperature, such as appropriate ventilation.Experimental result is as shown in table 1.
The rice seedling blight efficiency test result of table 1
Pythium oligadrum and Portugal's polyene sugar compounding can be seen that to the preventive effect of rice seedling blight more than, there is obvious increasing
Effect acts on, and the especially average anti-efficiency of embodiment 3,4,7,8 reaches 100%, and other compound proportions also have certain synergistic effect.
Prevent and treat canker of apple fruit field control effectiveness test
Embodiment 4 is diluted 2000 times, using trunk semar technique medication, 20% pythium oligadrum WP dilutes 2000 times, clearly
Water is control.Sick portion is struck off before dispenser, by liquid medicine painting thereon.Each processing is repeated 5 times, respectively in A, B, C, D and E 5
Individual cell is carried out simultaneously, is marked with red paint.Using random alignment, pythium oligadrum WP was respectively at 2016 6 for embodiment 4 and 20%
Months 16 days, July 27, August 27 days and September medication on the 28th are smeared；On November 18th, 2016 is investigated, and calculates different districts
Recurrence rate and new sick scar growth rate, count preventive effect.
Table 2 prevents and treats canker of apple fruit disease scar recurrence result
Table 3 prevents and treats canker of apple fruit newly sick scar result
Prevented and treated from the pythium oligadrum of above example 4 and Portugal's polyene sugar complex preparation with alone 20% oligosaccharides pythium spp WP
In canker of apple fruit, shown by Primary Study, embodiment 4 dilutes 2000 times of preventing and treating apple tree canker disease scar recurrence preventing and treating effects
Fruit is 83.0%, hence it is evident that better than the oligosaccharides pythium spp WP of comparison medicament 20%, prevention effect 75.4%.Meanwhile prevent and treat rot
In new sick scar preventive effect, the preventive effect that embodiment 4 dilutes 2000 times is 85.6%, and preventive effect is notable.The medicament is biogenic pesticide, right
Environment has no adverse effects, and meets green fruit production requirement, after commonly used in production, the harm to controlling apple tree canker
And further raising preventing and treating is horizontal significant.
Prevent and treat the tomato virus disease test of pesticide effectiveness
Embodiment 8 prevents and treats the tomato virus disease test of pesticide effectiveness, with 0.5% Portugal's polyene sugar soluble powder, 20% guanidine second
Sour copper WP is compareed, and dosing is shown in Table 4 with processing numbering：
The reagent agent of table 4 and application dosage
Application process：To plant leaf tow sides even spraying, spray liquid measure is 1050kg/hm2, blank control spray etc.
Measure clear water.Spraying equipment is noncomparable super green type knapsack sprayer.Dispenser 4 times altogether, dispenser date is respectively June 18 in 2016
Day, June 25, July 1, July 8.Plant does not fall ill during on-test, therefore is investigated without state of an illness radix, after the 4th dispenser
7d (on July 15th, 2016) carries out efficacy survey.
Investigation method：Random 5 points of samplings per cell, every is investigated 10 plants, record investigation total strain number, diseased plant number at different levels.Point
Level standard：0 grade：It is asymptomatic；1 grade：Bright arteries and veins, light floral leaf；3 grades：Lobus cardiacus and middle leaf piece floral leaf；5 grades：Lobus cardiacus and middle leaf film clips
Leaf, a small number of leaf malformations, shrinkage or plant are slightly downgraded；7 grades：Weight floral leaf, most leaf malformations, shrinkage or plant are downgraded；9
Level：Weight floral leaf, the obvious deformity of blade, line leaf, plant are seriously downgraded, or even dead.
7d prevents and treats tomato virus disease result of the test after 54 medications of table
The 7d after 4 dispensers, the yellowing leaf curling relatively control of chemicals treatment have been alleviated, and leaflet quantity is than control
Reduce.The 0.94g/hm of test medicine embodiment 82, 0.75g/hm2Preventive effect to tomato virus disease is respectively 58.12%,
57.15%, 0.5% Portugal polyene sugar soluble powder 0.94g/hm2To the preventive effect 56.35% of tomato virus disease；Comparison medicament
20% glucocyamine copper WP600g/hm2Preventive effect be 54.16%.The preventive effect of the high dose of embodiment 8 processing is significantly higher than control
The glucocyamine copper WP 600g/hm of medicament 20%2Preventive effect, also above 0.5% Portugal polyene sugar soluble powder 0.94g/hm2's
Preventive effect.Embodiment 8 is novel biopesticide complex preparation, and preventive effect is preferable, is compared with chemicals, pythium oligandrum and Portugal's polyene sugar
Maximum difference and advantage are pure natural and safe, either to the crops still safety all suitable to human body, ecological environment, and
And in tomato growth stage use to tomato without poisoning, because the two can excite disease-resistant factor, from from the point of view of, improve defence
The lasting period of virosis, it is the pharmaceutical preparations for preventing and treating virosis.
Above-mentioned with reference to embodiment is that a kind of bactericidal composition of biological pesticide and preparation method and application is carried out
It is described in detail, is illustrative rather than limited, several embodiments can be included according to limited scope, therefore not
Depart from changing and modifications under present general inventive concept, should belong within protection scope of the present invention.
Claims (4)
- A kind of 1. bactericidal composition of biological pesticide, it is characterised in that：The bactericidal composition includes active ingredient；The active ingredient includes：Mass ratio is 0.1~80:80~0.5 pythium oligadrum and Portugal's polyene sugar；Contain 5,000,000 pythium oligadrum spores in every gram of pythium oligadrum.
- 2. the bactericidal composition of biological pesticide according to claim 1, it is characterised in that：The active ingredient accounts for sterilization group 1wt%~80wt% of compound.
- 3. the bactericidal composition of biological pesticide according to claim 1 or 2, it is characterised in that：The bactericidal composition is Emulsifiable concentrate, aqua, soluble liquid, aqueous emulsion, microemulsion, wettable powder, suspending agent, effervescent tablet, micro-capsule suspension, Water dispersible granules or dry suspending agent.
- A kind of 4. application of the bactericidal composition of biological pesticide described in claim 1, it is characterised in that：The bactericidal composition For preventing and treating disease caused by the fungies such as plant late blight, rot, damping-off, balck shank, virosis or virus.
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