A kind of bactericidal composition that contains polyoxin and mancozeb
Technical field
The invention belongs to the composition pesticide field, a kind of specifically bactericidal composition that is used to prevent and treat fruit diseases.
Background technology
Mostly fruit diseases is that germ directly infects the tree body and make it morbidity, and loses in the soil with invalid body or conidium survives the winter attached to the surface of the seed with mycelium.Next year, germ produces conidium in the soil, and splashing by rainwater propagates in the dish strain, sprouts to produce germ tube, from wound or directly penetrate epidermis and invade, fell ill through 3~5 day incubation period, the sick portion in morbidity back produces spore again, borrows the wind and rain its spread in china, infect again repeatedly, disease is expanded rapidly, and high temperature, high humidity are the morbidity essential condition, in the time of especially when fine the easier disease of bringing out of rainy day gas take place.Have a strong impact on the growing way of fruit tree and the quality of fruit.
Polyoxin (polyoxin) claim multi-effect mycin again, belongs to broad spectrum activity antibiosis series bactericidal agent, inhales conduction in having, and the mechanism of action is to disturb the chitinous biosynthesis of germ cell wall.After tooth pipe and mycelia made and contact medicament, cell inclusion is expanded, breaks, overflowed in the part, and can not normal development, causes death.Suppress germ in addition and produce spore and scab expansion effect.
Mancozeb (mancozeb) claims big giving birth to again, is the wider protective fungicide of sterilization, uses with systemic fungicide to enlarge fungicidal spectrum, and delays the drug-fast generation of germ, thereby reach the infringement that protective plant is avoided germ.
More than two kinds if single use in the course of time fruit tree can develop immunity to drugs, and the price comparison of single agent is expensive, control efficiency can reduce gradually, influence the quality of fruit, therefore I use its two kinds of composite reagents, not only improve control efficiency but also low price, use more convenient.
Complex composition of the present invention does not occur at home as yet, does not appear in the newspapers in the document abroad yet.
Summary of the invention
Its each constituent and percentage by weight thereof are:
Polyoxin: mancozeb=1~100: 100~1; Other auxiliary agent.
Described other auxiliary agent of the invention described above can be white carbon, sldium lauryl sulfate, alkylsulfonate, alkylbenzenesulfonate, lauryl alcohol sodium sulphate, Negel, sodium lignin sulfonate, alkyl acid APEO, fatty alcohol-polyoxyethylene ether, azone, alkyl benzyl dimethyl oronain, alkyl amine oxide etc. and known in those skilled in the art other any one or wherein any multiple combination.
Embodiment
Embodiment (one) 70% polyoxin mancozeb soluble powder
Get polyoxin 10kg, mancozeb 60kg goes back virgin rubber 3kg, defoamer 2kg, other can allow the auxiliary element that adds water 10kg, through behind the comminution by gas stream, stir 30 minutes at normal temperatures through being up to the standards after after the assay was approved, measuring packing is finished product.
Embodiment (two) 40% polyoxin mancozeb wettable powders
Get polyoxin 30kg, mancozeb 10kg, white carbon 10kg, sodium lignin sulfonate 15kg, diatomite 30kg, other can allow the auxiliary element that adds, through behind the comminution by gas stream, stir 30 minutes at normal temperatures through after the assay was approved, measuring packing is finished product.
Embodiment (three) 20% polyoxin mancozeb water dispersible granules
Get polyoxin 10kg, mancozeb 10kg, white carbon 15kg, sodium lignin sulfonate 15kg, diatomite 45kg, other can allow the auxiliary element that adds, through behind the comminution by gas stream, stirs at normal temperatures 30 minutes, carry out granulation again, then through after the assay was approved, measuring packing is finished product
The present invention is not limited only to proportioning described in the above example and formulation.The present invention is again through a large amount of field trial checking preventive effect brilliances.
(1) prevents and treats sigatoka in Hainan.Be mixed with 70% polyoxin mancozeb soluble powder by example ().This prescription is by 1500 times of dilution sprayings, 7 days control efficiency are 78.8% behind the medicine, behind the medicine 10 days control efficiency be 91.3%, 30% polyoxin wetting powder and 70% mancozeb wettable powder according to using with quadrat method, 10 days preventive effects are 85.1% and 86.9% behind the medicine.
(2) prevent and treat ring rot of apple in Liaoning.Be mixed with 40% polyoxin mancozeb wettable powder by example (two).This prescription is by 1500 times of dilution sprayings, 7 days control efficiency are 77.5% behind the medicine, behind the medicine 10 days control efficiency be 92.8%, 30% polyoxin wetting powder and 70% mancozeb wettable powder according to using with quadrat method, 10 days preventive effects are 87.3% and 85.5% behind the medicine.
(3) at Shandong control pear scab.Be mixed with 20% polyoxin mancozeb water dispersible granule by example (three).This prescription is by 1500 times of dilution sprayings, 7 days control efficiency are 79.3% behind the medicine, behind the medicine 10 days control efficiency be 92.9%, 30% polyoxin wetting powder and 70% mancozeb wettable powder according to using with quadrat method, 10 days preventive effects are 85.3% and 84.8% behind the medicine.