A kind of broad spectrum bacilliform virus insecticide of producing with substituted host
Technical field
The present invention relates to the Biocidal preparation, particularly relate to a kind of broad spectrum bacilliform virus insecticidal suspending agent of producing with substituted host, be applicable to the biological control of various pests such as diamond-back moth, beet armyworm, cotton bollworm, oriental tobacco budworm, pink bollworm and tomato moth.
Background technology
Baculoviral comprises nuclear polyhedrosis virus and PuGV, is single infection insect and other arthropodan virus.Nuclear polyhedrosis virus can allow the insect that infects suffer from incurable disease just as the mankind's AIDS virus.In insect ate polyhedrosis virus into abdomen, polyhedrin ran into insect midgut strong basicity digestive juice and dissolves immediately, and virion is discharged, and very fast intrusion midgut epithelial cells is order of magnitude amplification in cell nucleus.The virion of amplification is carried out systemic infection with the hemolymph circulation to insect, a large amount of virion that insect is all produced behind the virus infections in a organized way, and virion is wrapped up by polyhedrin, forms polyhedron, and the insect whole body is all occupied by viral polyhedron.This moment, it will become the liquid that contains countless polyhedrosis viruses in moment as long as the external world touches polypide gently.This liquid fatal to insect can form large-area insect disease viral disease propagating between generation between the insect and up and down, but all as safe as a house, friendly to people, domestic animal, poultry, bird, fish etc.
Baculovirus insecticides, harmless, free from environmental pollution because it is to host insect good disinsection effect to people and animals and other higher mammal, do not injure natural enemy, be one of main biologic product of prevention target insect.The research and the application of multiple baculovirus insecticides have been carried out both at home and abroad.But compare with chemical pesticide, there are two major defects in baculovirus insecticides, the one, and desinsection speed is slow, and the field is used and just can be seen positive effect in 4-7 days; The 2nd, insecticidal spectrum is narrow, and a kind of baculoviral can only infect one or two kind of insect, and is powerless to simultaneous other insect.Two defectives of this of baculovirus insecticides are principal elements of restriction insect virus pesticide development.In order to enlarge the insecticidal spectrum of baculoviral, existing method mainly contains three kinds, and the one, make up recombinant baculovirus, with gene engineering method the baculoviral genome is transformed, attempt to obtain the baculoviral of insecticidal spectrum broad, but this method there is not the report of success.Second method is that several insect viruses are mixed, and be mixed with the wide spectrum insect virus pesticide, but this method will be produced several insect viruses simultaneously, and difficulty and cost that viral insecticide is produced all increase greatly; The third method is to select wide spectrum insect viruses seed culture of viruses to produce, and mainly is to utilize autographa california nuclear polyhedrosis virus (AcMNPV) and celery looper nuclear polyhedrosis virus (AgMNPV) at present.
Autographa california nuclear polyhedrosis virus (AcMNPV) is the representative species of baculoviral, can infect the cell of 30 various insects, and celery looper nuclear polyhedrosis virus (AgMNPV) is a type of this kind, also can infect various insects.Yet, not strong though AcMNPV can infect various insects to the virulence of most of important pest such as cotton bollworm, pink bollworm, diamond-back moth etc., only cabbage looper and beet armyworm there are stronger virulence.The production of AcMNPV and AgMNPV can only be bred with cell culture at present, or by beet exigua larvae live body propagation.Cost is too high can't realize industrialization with cell culture propagation, and viral yield is restricted garden beet exigua larvae live body propagation than SeMNPV is low because it is to the virulence of beet armyworm.
The 70-80 age in last century, all be separated to tomato moth nuclear polyhedrosis virus (Mamestra brassicaenucleopolyhedrovirus both at home and abroad, MbMNPV), because tomato moth endangers on China vegetables and is not serious, tomato moth suitable artificial feed of no use are raised, and this viral research work stopped at that time substantially.Find that afterwards this virus also is a kind of broad spectrum bacilliform virus,, some important pests such as beet armyworm, diamond-back moth, pink bollworm, cotton bollworm are had higher insecticidal activity, have application and development and be worth though it is wide not as the insecticidal spectrum of AcMNPV and AgMNPV.Yet, the original host of this virus is a tomato moth, it does not have suitable artificial feed to raise, can not produce virus by the method for polypide propagation, virus does not have suitable cell-line to breed yet, this virus has just been carried out some laboratory researches, does not develop into viral insecticide product pest control.
The formulation of insect virus pesticide mainly is wettable pulvis, finish and suspending agent at present.Preceding two kinds of formulations are eliminated gradually because formulation falls behind.The insect viruses suspending agent has two patents of invention at present, Chinese patent " insecticide suspension of beet noctuid polyhedron virus " (patent No. ZL02115908.4CN) is the insect viruses suspending agent patent of first mandate of applying for of the inventor, but it can only prevent and treat beet armyworm, is restricted in application.Chinese patent " a kind of baculoviral insecticidal suspending agent that contains nano material and preparation method thereof " (publication number CN1923007A) is though also add nano inorganic material in formulation, but the viral former powder of its use needs to purify, and pure more virus easy more losing activity in environment; Dispersant wherein even comprise lauryl sodium sulfate (SDS), and SDS can make insect viruses in a short time activity reduce greatly, shorten the shelf life of product, influence field control effect; Synergist has wherein been enumerated the various insects growth regulatory substance, but not all insect growth adjusting material all has synergistic effect to virus.
Solve the problem that present insect virus pesticide exists, will develop the technology that to breed broad spectrum bacilliform virus with the live body insect in a large number, will develop that component is more perfect, photoprotection is stronger, the better insect virus pesticide type of insecticidal effect.
Summary of the invention
Technical problem to be solved by this invention is: a kind of method of utilizing substituted host beet armyworm or cotton bollworm to produce broad spectrum bacilliform virus tomato moth nuclear polyhedrosis virus is provided, solving the original host of tomato moth nuclear polyhedrosis virus can not artificial feeding, can not be by the problem of a large amount of live bodies of original host propagation, thus a kind of broad spectrum bacilliform virus insecticide that can prevent and treat multiple important pests such as diamond-back moth, beet armyworm, cotton bollworm, oriental tobacco budworm, pink bollworm and tomato moth is provided.
The technical solution adopted for the present invention to solve the technical problems is: comprise that viral suspension, nanometer grade silica, refining fluorescent whitening agent, aromatic amino acid, sodium lignin sulfonate, glycerine, benzoylphenyl urea are like thing fluorine pyridine urea and sterile water.Described viral suspension is obtained by tomato moth nuclear polyhedrosis virus infection substituted host, and substituted host is cotton bollworm or beet armyworm.The component and the weight proportion thereof of described broad spectrum bacilliform virus insecticide are: 20,000,000,000 PIB/ml viral suspension 2.5-15%, 60nm silica 0.1-0.5%, aromatic amino acid 0.1-0.15%, refining fluorescent whitening agent 0.5-1%, sodium lignin sulfonate 0.1-1%, fluorine pyridine urea 0.01-0.1%, glycerine 1.0-2.0%, sterile water surplus.
Main feature of the present invention is exactly to produce the tomato moth nuclear polyhedrosis virus with substituted host.Through years of researches, we infect insects such as cotton bollworm, beet armyworm, diamond-back moth at discovery with MbMNPV, not only these insects are all had infectivity, and insecticidal activity and their protovirus heliothis armigera nuclear polyhedrosis virus, laphygma exigua nuclear polyhedrosis virus and plutella xylostella granulosis virus to infect host's separately insecticidal activity approaching.Because existing ripe bollworm virus and beet armyworm viral insecticide production technology, we have just carried out the research of producing the tomato moth viral insecticide with substituted host, attempting to solve the tomato moth nuclear polyhedrosis virus is difficult to breed the problem of producing by original host's live body, tomato moth virus can be produced in a large number, and production cost is lower, has the market development potential.This purpose reaches.
Therefore, insecticide provided by the invention compared with prior art has following major advantage:
One. realized utilizing substituted host to produce the method for virus, and lower cost.
Tomato moth nuclear polyhedrosis virus (MbMNPV) is though be a kind of broad spectrum bacilliform virus, and its original host can not artificial feeding, can not be on live body propagation in a large number, the both difficult cost of cell culture propagation is also very high.We produce with the beet armyworm or the cotton bollworm larvae live body propagation of artificial mass rearing, when keeping virus insect disinfestation activity and broad spectrum disinfestation characteristic, make this virus production convenient, the production efficiency height.In former the insect virus pesticide research and application, beet armyworm and the cotton bollworm artificial feed and the artificial feeding technology of our existing maturation have the method that improves baculoviral output.Cotton bollworm is raised with artificial feed, and larva is gone through 12 days phases, and after the tomato moth nuclear polyhedrosis virus infected, larva was gone through 15 days phases, and single worm larva viral yield reaches 10,000,000,000 PIB.Beet armyworm is raised with artificial feed, and larva is gone through 11 days phases, behind the virus infections larva to go through the phase be 13 days, single head larva viral yield reaches 2,000,000,000 PIB.Utilize substituted host to produce broad spectrum bacilliform virus, technology maturation, method are easy, the average viral yield height of single worm, and production cost is low, and the market competitiveness is strong, will promote the development of broad spectrum bacilliform virus insecticide.
They are two years old. the desinsection spectrum width, and multiple important pests had good preventive effect.
Kai Fa insect baculovirus pesticides in the past, or be that insecticidal spectrum is narrow, only one or two kind of insect there is control action; Though insecticidal spectrum is very wide, very low to many important pests insecticidal activities, there is not using value.For example, the laphygma exigua nuclear polyhedrosis virus insecticide can only be prevented and treated beet armyworm,, heliothis armigera nuclear polyhedrosis virus can only be prevented and treated cotton bollworm and oriental tobacco budworm.And autographa california nuclear polyhedrosis virus (AcMNPV) be though the insecticide wide spectrum all can not be prevented and treated important pests cotton bollworm, pink bollworm, diamond-back moth etc., and using value is very low.Take place simultaneously and the narrow contradiction of baculoviral insecticidal spectrum in order to solve several insects in field, it is domestic that to also have a kind of way be to produce several insect viruses respectively to be made into polyvalent insect virus pesticide (Chinese patent: polyvalent insect virus pesticide, publication number CN1102054A; Application number: 93119673.6).Owing to need the various insects of artificial feeding simultaneously, infect the different insect viruses of virus production separately respectively, this has increased the cost of viral insecticide greatly, does not also have competitive ability on market.The invention provides the broad spectrum bacilliform virus insecticide of producing with substituted host, not only convenient for production, and can control generation and the harm of insects such as diamond-back moth, beet armyworm, tomato moth, cotton bollworm, oriental tobacco budworm and pink bollworm simultaneously effectively.This insecticide had both kept the biological insecticides characteristic of viral insecticide, and was harmless to people and animals and higher mammal, was suitable for using in a large number on vegetables, overcome the narrow defective of baculoviral insecticidal spectrum again, enlarged the insecticidal spectrum of insect virus pesticide.A kind of formulation contains a kind of baculoviral just can prevent and treat multiple important pests simultaneously, good insecticidal effect is arranged, the approaching respectively virus (as heliothis armigera nuclear polyhedrosis virus, laphygma exigua nuclear polyhedrosis virus or plutella xylostella granulosis virus) separately of the insecticidal activity of important pests such as cotton bollworm, beet armyworm, diamond-back moth had the good application prospects and the prospect of marketing to its original host's insecticidal activity.
They are three years old. and increase the light protection composition in the formulation, the formulation component is more perfect.
Baculoviral is that virus has certain susceptibility to ultraviolet light, the easy loss of activity of being exposed to the sun in the sun for a long time as another defective of biological insecticides.In order to remedy this defective, need in viral insecticide, add bright protective agent.The bright protective agent that adds in virus insect disinfestation wetting powder and other formulation mainly is active carbon and the Congo red dyestuff that waits, and these bright protective agents make the appearance luster of formulation poor, and light protects effect also undesirable.Former insect viruses insecticidal suspending agent (Chinese patent " insecticide suspension of beet noctuid polyhedron virus, patent No. ZL02115908.4; Chinese patent " a kind of baculoviral insecticidal suspending agent that contains nano material and preparation method thereof "; publication number CN1923007A) in; added refining fluorescent whitening agent, aromatic amino acid and nano inorganic material bright protective agent respectively as virus; but because the bright protective agent kind is single; consumption is less, and the protective effect in environment also need be strengthened.In the broad spectrum bacilliform virus insecticide provided by the invention; add micro-inorganic nano material, aromatic series family amino acid and refining on a small quantity fluorescent whitening agent simultaneously; increased the light protection material composition in the formulation; increased the consumption of bright protective agent material, made the component of insect virus pesticide more perfect, suspension is better; shelf life is longer; when use in the field ultraviolet light there is protective action preferably, viral continuous action time lengthening, control efficiency improves.
Embodiment
The broad spectrum bacilliform virus insecticide of producing with substituted host provided by the invention comprises that viral suspension, nanometer grade silica, refining fluorescent whitening agent, aromatic amino acid, sodium lignin sulfonate, glycerine, benzoylphenyl urea are like thing fluorine pyridine urea and sterile water.Described viral suspension is obtained by tomato moth nuclear polyhedrosis virus infection substituted host, and substituted host is cotton bollworm or beet armyworm.The component and the weight proportion thereof of described broad spectrum bacilliform virus insecticide are: 20,000,000,000 PIB/ml viral suspension 2.5-15%, 60nm silica 0.1-0.5%, aromatic amino acid 0.1-0.15%, refining fluorescent whitening agent 0.5-1%, sodium lignin sulfonate 0.1-1%, fluorine pyridine urea 0.01-0.1%, glycerine 1.0-2.0%, sterile water surplus.
The invention will be further described below in conjunction with specific embodiment, but do not limit the present invention.
Example one:
Broad spectrum bacilliform virus is the tomato moth nuclear polyhedrosis virus, and substituted host is a cotton bollworm, infects the 4 instar bollworm grubs production tomato moth nuclear polyhedrosis virus that artificial feed are raised with 3,000,000 PIB/mL viral suspensions.By weight, the artificial feed prescription of this cotton bollworm larvae is: analysis for soybean powder, wheat flour, corn flour each 6%, dusty yeast 1.2%, agar strip 1%, Vc and compound Vb each 0.1%, sorbic acid and ethylparaben each 0.03%, the running water surplus.Collect the deadly worm corpse processing of virus disease in 5-8 days behind the virus infections substituted host, be processed into the viral suspension of 20,000,000,000 PIB/mL.
Then, by weight ratio, add 20,000,000,000 PIB/ml viral suspensions 10%, 60nm silica 0.3%, aromatic amino acid tryptophan 0.12%, refining fluorescent whitening agent 1.0%, sodium lignin sulfonate 0.2%, fluorine pyridine urea 0.05%, glycerine 1.5% and sterile water surplus successively, the packing that stirs again obtains a kind of milky suspending agent product.
Example two:
Broad spectrum bacilliform virus is the tomato moth nuclear polyhedrosis virus, and substituted host is a beet armyworm, infects beet exigua larvae production in the 4 ages tomato moth nuclear polyhedrosis virus that artificial feed are raised with 500,000 PIB/mL viral suspensions.By weight, the artificial feed prescription of this beet exigua larvae is: analysis for soybean powder 10.5%, wheat bran, corn flour each 5.5%, dusty yeast 1.2%, sucrose 0.4%, carragheen 6%, Vc and compound Vb each 0.1%, sorbic acid and ethylparaben each 0.02%, aureomycin 0.5%, running water surplus.Collect the deadly worm corpse processing of virus disease in 4-7 days behind the virus infections substituted host, be processed into the viral suspension of 20,000,000,000 PIB/mL.
Then, by weight ratio, add 20,000,000,000 PIB/ml viral suspensions 7.5%, 60nm silica 0.15%, aromatic amino hydroxyphenylaminopropionic acid 0.14%, refining fluorescent whitening agent 0.8%, sodium lignin sulfonate 0.3%, fluorine pyridine urea 0.08%, glycerine 1.8% and sterile water surplus successively, the packing that stirs again obtains a kind of milky suspending agent product.
Example three:
Broad spectrum bacilliform virus is the tomato moth nuclear polyhedrosis virus, and substituted host is a cotton bollworm, infects the 3 instar bollworm grubs production tomato moth nuclear polyhedrosis virus that artificial feed are raised with 1,000,000 PIB/mL viral suspensions.The artificial feed prescription of this cotton bollworm larvae is identical with example one.Collect the deadly worm corpse processing of virus disease in 4-9 days behind the virus infections substituted host, be processed into the viral suspension of 20,000,000,000 PIB/mL.
Then, by weight ratio, add 20,000,000,000 PIB/ml viral suspensions 12%, 60nm silica 0.6%, aromatic amino acid tryptophan 0.11%, refining fluorescent whitening agent 1.0%, sodium lignin sulfonate 0.4%, fluorine pyridine urea 0.05%, glycerine 1.2% and sterile water surplus successively, the packing that stirs again obtains a kind of milky suspending agent product.
Example four:
Broad spectrum bacilliform virus is the tomato moth nuclear polyhedrosis virus, and substituted host is a beet armyworm, infects beet exigua larvae production in the 3 ages tomato moth nuclear polyhedrosis virus that artificial feed are raised with 200,000 PIB/mL viral suspensions.The artificial feed prescription of this beet exigua larvae is identical with example two.Collect the deadly worm corpse processing of virus disease in 4-8 days behind the virus infections substituted host, be processed into the viral suspension of 20,000,000,000 PIB/mL.
Then, by weight ratio, add 20,000,000,000 PIB/ml viral suspensions 5.0%, 60nm silica 0.2%, aromatic amino acid tryptophan 0.15%, refining fluorescent whitening agent 0.6%, sodium lignin sulfonate 0.2%, fluorine pyridine urea 0.03%, glycerine 1.6% and sterile water surplus successively, the packing that stirs again obtains a kind of milky suspending agent product.
Example five:
Broad spectrum bacilliform virus is the tomato moth nuclear polyhedrosis virus, and substituted host is a cotton bollworm, infects 5 instar bollworm grubs that artificial feed are raised with 5,000,000 PIB/mL viral suspensions, and cotton bollworm artificial feed prescription is identical with example one.Collect the deadly worm corpse processing of virus disease in 5-8 days behind the virus infections substituted host, be processed into the viral suspension of 20,000,000,000 PIB/mL.
Then, by weight ratio, add 20,000,000,000 PIB/ml viral suspensions 8.0%, 60nm silica 0.5%, aromatic amino acid tryptophan 0.12%, refining fluorescent whitening agent 0.9%, sodium lignin sulfonate 0.5%, fluorine pyridine urea 0.06%, glycerine 1.8% and sterile water surplus successively, the packing that stirs again obtains a kind of milky suspending agent product.
Example six:
Broad spectrum bacilliform virus is the tomato moth nuclear polyhedrosis virus, and substituted host is a beet armyworm, with 1,000,000 PIB/mL viral suspensions infect that artificial feed raise 5 age beet exigua larvae, beet armyworm artificial feed prescription is identical with example two.Collect the deadly worm corpse processing of virus disease in 5-7 days behind the virus infections substituted host, be processed into the viral suspension of 20,000,000,000 PIB/mL.
Then, by weight ratio, add 20,000,000,000 PIB/ml viral suspensions 7.0%, 60nm silica 0.4%, aromatic amino acid tryptophan 0.13%, refining fluorescent whitening agent 0.9%, sodium lignin sulfonate 0.6%, fluorine pyridine urea 0.09%, glycerine 1.0% and sterile water surplus successively, the packing that stirs again obtains a kind of milky suspending agent product.