CN111296488A - Sanitary insecticidal composition containing bacillus sphaericus and application thereof - Google Patents
Sanitary insecticidal composition containing bacillus sphaericus and application thereof Download PDFInfo
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- CN111296488A CN111296488A CN201811514496.9A CN201811514496A CN111296488A CN 111296488 A CN111296488 A CN 111296488A CN 201811514496 A CN201811514496 A CN 201811514496A CN 111296488 A CN111296488 A CN 111296488A
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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
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
-
- 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
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
-
- 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
- A01N47/40—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 a double or triple bond to nitrogen, e.g. cyanates, cyanamides
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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
- A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
Abstract
The invention relates to a sanitary insecticidal composition containing bacillus sphaericus and a specific neonicotinoid insecticide. Compared with a single agent, the composition has obvious synergistic effect, improves the insecticidal effect, and particularly has excellent killing effect on sanitary pests with resistance to organic phosphorus; in addition, the compound preparation is the oven-free granule prepared by a special method, the biological activity of bacillus sphaericus is retained to the maximum extent, the activity exertion of biological agents and chemical agents is remarkably promoted, and the compound preparation is convenient to use and is particularly suitable for preventing and treating sanitary mosquito larvae in practical use.
Description
Technical Field
The invention relates to the field of sanitary insecticides, in particular to a sanitary insecticidal composition containing bacillus sphaericus and a specific neonicotinoid insecticide and application thereof.
Background
The neonicotinoid insecticide is derived from plant pesticide nicotine, is used for homoptera pests in 1980, is developed into a series of chloronicotinoid insecticides in Bayer departments in 20 th century and 80 th century, is a second-generation neonicotinoid insecticide, imidacloprid is the first insecticide developed in research and development, is different from conventional insecticides, has no mutual resistance, high insecticidal activity and wide insecticidal range, is particularly efficient on homoptera pests, coleoptera pests and partial lepidoptera pests, has low toxicity on mammals, can be used for stem and leaf treatment and seed treatment, and therefore attracts extensive attention of people, and a plurality of companies at home and abroad successively research the neonicotinoid insecticides, so far developed neonicotinoid insecticides are various in variety, imidacloprid, nitenpyram, acetamiprid, thiacloprid, pythiprid, thiamethoxam, thiacloprid, and the like, Imidaclothiz, dinotefuran, sulfoxaflor and the like.
Bacillus sphaericus is a kind of aerobic bacillus widely distributed in nature and forming subterminal expanded sporangia and spherical spores. Strains of 9 of the 49 flagellar serotypes found (H1, H2, H3, H5, H6, H9, H25, H26 and H48) have some poisoning effect on mosquito larvae. Most of the virulent strains belong to serotypes H5, H6 and H25, such as 2362, 1593, 2297, Ts-1, C3-41 and the like. According to the mosquito killing activity, the strains are divided into high-toxicity strains and low-toxicity strains, and all the toxic strains have higher DNA homology (> 79%) and belong to DNA homologous type IIA. After the mosquito larvae ingest the bacillus sphaericus spores and the protein crystals, the protein crystals undergo proteolysis in an alkaline environment. After decomposition, the toxic particles are released and absorbed by specific receptors in the epithelial cells of the intestinal tract. After a series of changes, cells in the middle of the intestinal tract and in the cecum swell and rupture, resulting in imbalance of ions in mosquito larvae, hemotoxemia, and finally death of mosquito larvae.
The prior art does not have the application of compounding bacillus sphaericus with chemical agents, particularly for preventing and controlling mosquito larvae, and the neonicotinoid insecticide is safe to the environment after being compounded with the bacillus sphaericus because of the advantage of low toxicity to mammals, aquatic fishes, daphnia magna and algae.
Through a large number of pesticide effect tests, the applicant finds that although the neonicotinoid insecticides are various in variety, only imidacloprid, thiamethoxam, dinotefuran, acetamiprid, nitenpyram and clothianidin have excellent killing activity on mosquito larvae, and only the N-nitroneonicotinoid insecticides of imidacloprid, dinotefuran, thiamethoxam, clothianidin and bacillus sphaericus have obvious synergistic effect after being compounded.
Disclosure of Invention
The invention aims to provide the insecticidal composition containing the bacillus sphaericus and the specific neonicotinoid insecticide, which has the advantages of good insecticidal effect, low toxicity, environmental protection, obvious synergistic effect after compounding and capability of delaying the generation of drug resistance of sanitary pests.
In order to realize the purpose of the invention, the technical scheme of the invention is as follows:
the sanitary insecticidal composition is characterized by comprising an active component A and an active component B, wherein the active component A is bacillus sphaericus (Bacillus sphaericus H5a5B, hereinafter abbreviated to Bs H5a5B), and the active component B is any one or more of N-nitroneonicotinoid insecticides imidacloprid, dinotefuran, thiamethoxam and clothianidin.
The weight ratio of the active component A to the active component B is 20: 1-1: 20, preferably 10: 1-1: 2, and the content of 2000ITU/mg Bacillus sphaericus mother drug is set to be 100%.
The composition can be prepared into suspending agents, wettable powder and granules.
Further, the invention provides a preparation method of the drying-free granules, wherein the preparation method comprises the following components in percentage by weight:
active component A: 50-200 ITU/mg;
active component B: 0.5-5.0%;
wetting and dispersing agent: 1% -10%;
liquid binder: 5% -30%;
preservative: 0.5-1%;
acid-base regulator: 0.8-2%;
filling: 2 to 10 percent;
porous carrier: the balance is made up to 100%;
the wetting dispersant comprises one or more of fatty alcohol-polyoxyethylene ether, alkylphenol ethoxylate, alkyl sulfate, naphthalene sulfonate, alkyl succinate sulfonate, alkylphenol ethoxylate formaldehyde condensate sulfonate, polyether phosphate and salt thereof, polycarboxylate, block polyether, phenethyl phenol polyoxyethylene ether phosphate triethanolamine salt, naphthalene sulfonate formaldehyde condensate and lignosulfonate;
the preservative comprises but is not limited to one or more of sodium benzoate, potassium sorbate, sodium dehydroacetate, sodium diacetate, nipagin ester or sodium salt thereof, bronopol, pentanediol, penicillin, tetracycline, amoxicillin, ciprofloxacin hydrochloride and the like;
the pH modifier includes, but is not limited to, one or more of citric acid, oxalic acid, ammonium chloride, tartaric acid and succinic acid;
the filler includes but is not limited to one or more of kaolin, white carbon black, china clay, bentonite, attapulgite, diatomite and light calcium carbonate;
the liquid binder is: one or more of ethylene glycol, glycerol and polyethylene glycol;
the porous carrier is: one or more of attapulgite particles, red brick particles, coal gangue particles, expanded perlite particles, corncob particles and the like;
the preparation method comprises the following steps:
1) uniformly mixing an active component A, an active component B, a wetting dispersant, a preservative, an acid-base regulator and a filler, and then carrying out air flow crushing to obtain powder;
2) after a proper amount of liquid binder is used for fully wetting the porous carrier, the powder is added and then the rolling adsorption is uniform;
3) standing at normal temperature, sieving and subpackaging after the porous carrier fully absorbs the liquid binder and the particles are not sticky and have good fluidity.
In the present application, "%" is a weight percentage unless otherwise specified.
Further, the present application relates to the use of the above sanitary insecticidal composition for the control of sanitary pests, which are wigglers.
The preparation prepared from the composition is directly or after being diluted for use, and the application method is selected according to the purpose to be achieved and the environment to be used, and mosquito larvae (wigglers) bred in various water sources are treated by methods of spraying, powder spraying, broadcasting and the like according to the property of the composition.
Compared with the prior art, the invention has the beneficial effects that:
(1) after the bacillus sphaericus and the specific neonicotinoid insecticide are compounded, the synergistic effect on pests is remarkable, the compounded insecticidal effect is improved, and the dosage of a chemical agent is reduced under the condition of the same insecticidal efficacy.
(2) The invention has excellent resistance treatment effect on the conventional organophosphorus mosquito-killing young medicaments such as parathion, fenthion and the like.
(3) The composition consists of active ingredients with complementary insecticidal mechanisms, has increased action sites, and is favorable for overcoming and delaying the generation of drug resistance.
(4) The invention is processed into granules by a special method, realizes the drying-free process by utilizing the triple effects of the colloid protection effect of glycol, glycerol and polyethylene glycol on active protein, the bonding effect on powder materials, the dispersion effect on active components and the strong adsorption effect of a porous carrier on the glycol, the glycerol and the polyethylene glycol, retains the biological activity of bacillus sphaericus to the maximum extent, remarkably promotes the activity exertion of biological agents and chemical agents, is convenient to use, and is particularly suitable for preventing and controlling sanitary mosquito larvae in practical use.
(5) The novel compound composition is added to the field of domestic sanitary pesticides, has obvious pesticide effect and can be widely popularized and applied.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the invention to these embodiments. It will be appreciated by those skilled in the art that the present invention encompasses all alternatives, modifications and equivalents as may be included within the scope of the claims.
Application example 1: indoor experiment of mosquito larvae.
Test subjects: culex pipiens pallens, larvae of 3 years old, indoor sensitive strain.
Test agents: weighing Bs H5a5b raw drug, adding a proper amount of distilled water containing lignosulfonate, fully stirring, and preparing the raw drug with the distilled water into a mother drug with the required concentration; weighing imidacloprid, thiamethoxam, dinotefuran and acetamiprid raw medicines, dissolving the raw medicines with a proper amount of acetone, and adding distilled water to prepare mother liquor with a required concentration; mixing the mother liquor according to a certain proportion to prepare mixed mother liquor.
The test method comprises the following steps: reference pesticide registration sanitary insecticide indoor efficacy test and evaluation part 5: taking 1L beaker, adding 1L of liquid medicine to prepare mosquito larva control agent NY/T1151.5-2014, putting 30 larvae of healthy culex pipiens pallens at 3 ages in each cup, and observing the death condition of the larvae every day; repeating for three times, and setting a blank control group; standard feeding, investigating the number of dead and live insects after 48h, and calculating the mortality.
The evaluation method comprises the following steps: the Bliss method is one of the classical methods for evaluating the effect of a mixture. According to Bliss' proposed concept of independent combined action, the theoretical mortality rate P for mixed pesticides can be calculated using the following formula:
p ═ Pm + Pn (1-Pm), where Pm is the mortality (%) of the target at the concentration m of the first active ingredient; pn is the mortality (%) of the target at the second active ingredient concentration n.
If the actual mortality rate of the target after the two active ingredients are mixed at a certain concentration is greater than the theoretical mortality rate P, the two active ingredients are judged to have synergistic effect when being mixed at a set concentration, otherwise, the two active ingredients are antagonistic.
TABLE 1 Bs H5a5b killing effect of the compound preparation on Culex pipiens pallens larvae
And (3) test results: as can be seen from Table 1, the Bs H5a5b compound N-nitroneonicotinoid insecticides imidacloprid, dinotefuran, thiamethoxam and clothianidin have obvious synergistic effect on controlling culex pipiens pallens larvae, and the Bs H5a5b compound non-N-nitroneonicotinoid insecticides such as acetamiprid and nitenpyram have no obvious synergistic effect.
Granules example 1:
centrifuging 300ITU/mg Bs H5a5b liquid mother medicine at 6000r/min for 30min to obtain mother medicine powder cake, and adsorbing with appropriate amount of white carbon black to obtain 2000ITU/mg Bs mother powder, wherein the Bs mother powder is prepared by the method for the following granules;
uniformly mixing 2.5g of 2000ITU/mg Bs mother powder, 5.0g of sodium lignosulfonate, 2.0g of imidacloprid, 5.0g of white carbon black and 0.2g of sodium hydroxide, carrying out air flow grinding to obtain powder, fully wetting 70.3g of expanded perlite particles with 15g of ethylene glycol, adding the powder, uniformly carrying out rolling adsorption, and carrying out standing adsorption for 24 hours to obtain 4.5% Bs. imidacloprid granules.
Granules example 2:
uniformly mixing 3.0g of 2000ITU/mg Bs mother powder, 5.0g of sodium lignosulfonate, 5.0g of dinotefuran, 5.0g of white carbon black and 0.2g of sodium hydroxide, carrying out air flow grinding to obtain powder, fully wetting 66.8g of attapulgite particles with 15g of glycerol, adding the powder, uniformly carrying out rolling adsorption, and carrying out standing adsorption for 24 hours to obtain 8% Bs. dinotefuran granules.
Granules example 3:
uniformly mixing 3.5g of 2000ITU/mg Bs mother powder, 5.0g of sodium lignosulfonate, 3.5g of thiamethoxam, 5.0g of white carbon black and 0.2g of sodium hydroxide, carrying out jet milling to obtain powder, fully wetting 67.8g of red brick particles with 15g of PEG400, adding the powder, carrying out rolling adsorption uniformly, and carrying out standing adsorption for 24 hours to obtain 7% Bs. thiamethoxam granules.
Granules example 4:
4.0g of 2000ITU/mg Bs mother powder, 5.0g of sodium lignosulfonate, 1.0g of clothianidin, 5.0g of white carbon black and 0.2g of sodium hydroxide are uniformly mixed, powder is obtained by airflow grinding, 74.8g of coal gangue particles are fully wetted by 10g of PEG600, then the powder is added, the powder is uniformly rolled and adsorbed, and the Bs. clothianidin particle with the concentration of 5 percent is obtained after standing and adsorption for 24 hours.
Granules example 5:
5.0g of 2000ITU/mg Bs mother powder, 5.0g of sodium lignosulfonate, 0.5g of imidacloprid, 5.0g of white carbon black and 0.2g of sodium hydroxide are uniformly mixed, powder is obtained by airflow grinding, 20g of PEG600 is fully wetted with 64.3g of corncob particles, then the corncob particles are added into the powder, the powder is uniformly rolled and adsorbed, and the 5.5 percent Bs. clothianidin particles are obtained after standing and adsorption for 24 hours.
Comparative example 1:
4.5g of Bs mother powder of 2000ITU/mg, 5.0g of sodium lignosulfonate, 5.0g of white carbon black and 0.2g of sodium hydroxide are uniformly mixed, powder is obtained by airflow pulverization, 15g of ethylene glycol is fully wetted with 70.3g of expanded perlite particles, then the powder is added to be uniformly adsorbed in a rolling way, and the Bs particles with the concentration of 4.5% are obtained after standing and adsorption for 24 hours.
Comparative example 2:
uniformly mixing 4.5g of imidacloprid, 5.0g of sodium lignosulfonate, 5.0g of white carbon black and 0.2g of sodium hydroxide, carrying out air flow grinding to obtain powder, fully wetting 70.3g of expanded perlite particles with 15g of ethylene glycol, adding the powder, carrying out rolling adsorption uniformly, standing and adsorbing for 24 hours to obtain 4.5% imidacloprid granules.
Comparative example 3:
uniformly mixing 2.5g of 2000ITU/mg Bs mother powder, 5.0g of sodium lignosulfonate, 2.0g of imidacloprid, 5.0g of white carbon black and 0.2g of sodium hydroxide, carrying out air flow grinding to obtain powder, fully wetting 70.8g of expanded perlite particles with 0.5g of sodium carboxymethylcellulose and 14.5g of water, adding the powder, carrying out rolling adsorption uniformly, and drying at 50 ℃ for 3h to obtain 4.5% Bs. imidacloprid granules.
Comparative example 4:
1.0g of parathion, 22011.0 g of pesticide emulsifier, 5.0g of sodium lignosulfonate, 5.0g of white carbon black and 0.2g of sodium hydroxide are uniformly mixed, airflow grinding is carried out to obtain powder, 15g of ethylene glycol is fully wetted with 72.8g of expanded perlite particles, then the powder is added to be uniformly adsorbed in a rolling way, and the mixture is kept stand for 24 hours to obtain 1.0% of parathion granules.
Comparative example 5:
0.5g of pyriproxyfen, 0.5g of dimethylbenzene, 22011.0 g of pesticide emulsifier, 5.0g of sodium lignosulfonate, 5.0g of white carbon black and 0.2g of sodium hydroxide are uniformly mixed, powder is obtained by airflow grinding, 72.8g of expanded perlite particles are fully wetted by 15g of ethylene glycol, then the powder is added, the powder is uniformly rolled and adsorbed, and the 0.5% pyriproxyfen granules are obtained after standing and adsorption for 24 hours.
Application example 3: indoor experiment of mosquito larvae.
Test subjects: culex pipiens pallens, larvae of 3 years old, indoor sensitive strain.
The test method comprises the following steps: reference pesticide registration sanitary insecticide indoor efficacy test and evaluation part 5: adding 3L dechlorinated tap water into a white porcelain basin, adding the preparation at a dose of 10g/m3, stirring uniformly, adding 30 healthy 3-instar larvae, feeding according to a normal method, and observing the mortality rate of 48h after adding test insects; repeating for three times, and setting a blank control group; during the test, supplementing test water to the scale mark of the initial water amount at intervals of 2 d; and (3) observing the lasting period: 30 larvae of 3 rd instar were added to the test group and the blank control group at 1d, 30d, 45d and 60d, respectively, and the test results were observed according to the above steps, and the mortality was observed by adding 2 hours to the 1 st day of addition.
And (3) test results: the Bs. imidacloprid compound granules are shown in table 2, compared with single agents, the Bs. imidacloprid compound granules are improved in quick-acting property and lasting effect for preventing and controlling culex pipiens pallens larvae, compared with a non-drying granule preparation method, the granules prepared by a drying-free process have obvious advantages in quick-acting property and lasting effect, and the drug effect of active ingredients is fully exerted.
TABLE 2Bs killing effect of imidacloprid compounded granules on culex pipiens pallens larvae
Application example 3: and (5) testing the pesticide effect of the mosquito larvae.
Test subjects: culex pipiens pallens, 3 rd instar larvae, collected from xuzhou, jiangsu (chenshilong et al reported resistance to the production of parathion, 2011, a chinese hygienic insecticide machinery).
The test method comprises the following steps: reference pesticide registration sanitary insecticide indoor efficacy test and evaluation part 5: the mosquito larva control agent NY/T1151.5-2014 is prepared by taking white porcelain pots with the diameter of 30cm and the depth of 10cm, putting 3L of clear water in the pots, putting 50 heads of healthy and pale culex 3-year-old larvae in each pot, adding the prepared agent according to the dosage, observing death and pupation conditions of the larvae every day, and taking out the pupae to observe the eclosion condition of the larvae. Three replicates were used and a blank control was set.
And (3) test results: in table 3, Bs. the imidacloprid compounded granules have better control rate on outdoor strains of culex pipiens pallens than the fenthion granules, and the quick action (larval mortality) is much higher than that of the pyriproxyfen granules.
TABLE 3 Effect of different Agents on controlling mosquito larvae of Culex pipiens outdoor strain
The bacillus sphaericus-containing pesticidal composition and its use have been described by way of specific examples, and it will be apparent to those skilled in the art that the contents of the present invention may be modified appropriately for other purposes without departing from the scope of the invention, and all such modifications and alterations as are obvious to those skilled in the art are deemed to be within the scope of the invention.
Claims (5)
1. A sanitary insecticidal composition is characterized by comprising an active component A and an active component B, wherein the active component A is bacillus sphaericus, and the active component B is any one or more of N-nitroneonicotinoid insecticides imidacloprid, dinotefuran, thiamethoxam and clothianidin; the weight ratio of the two is 20: 1-1: 20, and the content of 2000ITU/mg bacillus sphaericus mother drug is set as 100%.
2. A sanitary insecticide composition according to claim 1, wherein the weight ratio of the two is 10:1 to 1: 2.
3. The sanitary insecticidal composition according to claim 1, wherein said composition is formulated as a suspension, a wettable powder or a granule.
4. The sanitary insecticide composition according to claim 1, wherein the composition is formulated as a non-drying granule, wherein the following components are used in percentage by weight:
active component A: 50-200 ITU/mg;
active component B: 0.5-5.0%;
wetting and dispersing agent: 1% -10%;
liquid binder: 5% -30%;
preservative: 0.5-1%;
acid-base regulator: 0.8-2%;
filling: 2 to 10 percent;
porous carrier: the balance is made up to 100%;
the preparation method comprises the following steps:
1) uniformly mixing an active component A, an active component B, a wetting dispersant, a preservative, an acid-base regulator and a filler, and then carrying out air flow crushing to obtain powder;
2) after a proper amount of liquid binder is used for fully wetting the porous carrier, the powder is added and then the rolling adsorption is uniform;
3) standing at normal temperature, sieving and subpackaging after the porous carrier fully absorbs the liquid binder and the particles are not sticky and have good fluidity.
5. The sanitary insecticidal composition according to any one of claims 1 to 4, for use in controlling sanitary pests, said sanitary pests being wigglers.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112481132A (en) * | 2020-12-02 | 2021-03-12 | 云南省微生物发酵工程研究中心有限公司 | Drying-free granular microbial inoculum and preparation method thereof |
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| CN102595881A (en) * | 2009-08-28 | 2012-07-18 | 巴斯夫公司 | Foamable pesticide compositions and methods of application |
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2018
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| CN102595881A (en) * | 2009-08-28 | 2012-07-18 | 巴斯夫公司 | Foamable pesticide compositions and methods of application |
| WO2012104369A1 (en) * | 2011-02-04 | 2012-08-09 | Basf Se | Composition containing a polyorganosiloxane, a larvicide, and an organic solvent |
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| 骆焱平 等主编: "《农药制剂加工技术》", 31 August 2015, 化学工业出版社 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112481132A (en) * | 2020-12-02 | 2021-03-12 | 云南省微生物发酵工程研究中心有限公司 | Drying-free granular microbial inoculum and preparation method thereof |
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Application publication date: 20200619 |
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