905 results about "Bacillus velezensis" patented technology

The invention discloses bacillus velezensis GX0003742 and biocontrol application thereof, and belongs to the technical field of microorganism application. The invention discloses bacillus velezensis GX0003742 with a broad-spectrum bacteriostatic effect, which is preserved in the China General Microbiological Culture Collection Center, the preservation address is No.3, No.1 yard, Beichen West Road, Chaoyang District, Beijing, the preservation date is September 14, 2024, and the preservation number is CGMCC No.31981. The bacillus velezensis GX0003742 has the advantages that the bacillus velezensis GX0003742 can be used for preparing the bacillus velezensis GX0003742; the strain can obviously inhibit growth of colletotrichum basjoo mycelia and obviously reduce occurrence of postharvest diseases of bananas, has an inhibiting effect on various pathogenic bacteria, has a good insecticidal effect on auricular bean root-knot nematode, and provides a new strain resource for biological prevention and control of plant diseases.

The invention relates to bacillus velezensis SMB1 and application thereof in prevention and treatment of plant diseases, and belongs to the technical field of biological prevention and treatment of plant diseases. The strain is preserved in the China Center for Type Culture Collection on November 27, 2024, the preservation address is Luojia mountain, Luojia mountain, eight road, Wuchang District, Wuhan City, Hubei Province, and the preservation number is CCTCC NO: M20242647. The bacillus velezensis SMB1 provided by the invention has a remarkable bacteriostatic effect on plant pathogenic fungi, plant pathogenic oomycetes, plant pathogenic bacteria and animal pathogenic bacteria, has an extremely good broad-spectrum bacteriostatic function, has a great application potential in biological control of plant diseases, can reduce the use of chemical pesticides, and has a good application prospect. The pesticide residue in agricultural products is reduced, the environment is protected, and the urgent demand on pollution-free agricultural product production at present is met.

The invention discloses bacillus velezensis as well as fermentation product filtrate and a biological product thereof, and belongs to the technical field of microorganisms, a bacillus velezensis BTN-HB-F4 strain is separated and purified from prinsepia utilis royle in Harba snow mountain in Yunnan province, the fermentation product filtrate of the bacillus velezensis has excellent HAS inhibition capacity and remarkable DPPH and ABTS free radical scavenging capacity, and the biological product of the bacillus velezensis has the advantages that the biological product can be used for preparing biological products of the prinsepia utilis royle; a good anti-oxidation effect can be realized; secondly, under various concentrations, fermentation product filtrate can remarkably reduce the proportion of SA-beta-Gal positive cells, gene expression of matrix metalloproteinase 3 can be remarkably inhibited, and a good anti-aging effect is achieved; in addition, fermentation product filtrate can remarkably inhibit generation of zebra fish melanin and has a good whitening effect; the secretion amount of cell inflammatory factors IL-6 and TNF-alpha can be remarkably inhibited, and a good relieving effect is achieved; finally, the fermentation product filtrate can effectively inhibit the growth of pathogenic bacteria staphylococcus aureus, and has the potential of regulating the skin micro-ecology.

The invention discloses a growth-promoting bacillus velezensis FSUXF-717 capable of tolerating heavy metals and application of the growth-promoting bacillus velezensis FSUXF-717, and belongs to the technical field of agricultural microorganisms. The bacillus velezensis FSUXF-717 has the following advantages: (1) the bacillus velezensis FSUXF-717 has multifunctional metabolic characteristics: various carbon sources such as cane sugar, raffinose and aesculin can be utilized, and the bacillus velezensis FSUXF-717 has the functions of producing long-chain hormone, dissolving phosphorus, secreting ACC deaminase, efficiently forming a biological membrane and the like; (2) broad-spectrum adaptability: the strain has strong tolerance to heavy metal pollution (Cd / Pb / Cr / Ni), drought and broad-spectrum acid-base stress (pH 4.5-9.5); under the condition of relatively low bacterium concentration, the auxin can be stably synthesized in a heavy metal-acid-base composite stress environment. And (3) the activity of soil sucrase and soil phosphatase is enhanced. Excavation of the strain can provide an important germplasm resource basis for development and utilization of novel efficient microbial fertilizers and lay a foundation for green and high-quality development of agriculture.

The invention belongs to the technical field of microorganisms, particularly relates to rice endophytic bacillus velezensis AN6 and application thereof, and particularly provides bacillus velezensis AN6 which is classified and named as bacillus velezensis and has the preservation number of CCTCC (China Center for Type Culture Collection) NO: M 20231886. The invention provides a novel rice endophytic bacillus velezensis strain AN6, through separation, screening, identification and experimental verification, it is found that the strain shows broad-spectrum resistance to various phytopathogens including rice bacterial leaf blight, rice blast and the like, the strain has the capacity of inhibiting various phytopathogens and has the capacity of adsorbing heavy metal, and the strain has the advantages of being capable of inhibiting various phytopathogens and capable of being used as a novel rice endophytic bacillus velezensis strain AN6. The method is of great significance to biological control of rice diseases and development of green agriculture.

The invention relates to bacillus velezensis and application thereof in preparation of a water-soluble microbial agent, and belongs to the technical field of microorganisms. The bacillus velezensis has the effects of producing exopolysaccharides, promoting the formation of soil aggregates, degrading abamectin, hydrolyzing protein, producing indoleacetic acid, promoting the growth of tomato plants and promoting the enzyme activity of tomato rhizosphere soil enzyme. The fertilizer not only has the effects of improving the soil aggregate structure and promoting the growth of tomato plants, but also can accelerate the temperature rise of the abamectin fermentation waste residue compost, prolong the high-temperature period and shorten the compost period, and is beneficial to promoting the harmless treatment and resource utilization of the abamectin fermentation waste residue.

The invention relates to bacillus velezensis and application thereof in preparation of a multifunctional straw decomposition agent, and belongs to the technical field of microorganisms. The bacillus velezensis has the functions of producing cellulase, producing xylanase, degrading abamectin, decomposing inorganic phosphorus and degrading straws; when straw is returned to the field, the multifunctional straw decomposition agent provided by the invention not only can accelerate the decomposition speed of straw, decompose abamectin residues in soil and improve the soil ecology, but also can promote the growth of pepper plants and enhance the stress resistance of the pepper plants, and has a good comprehensive application effect.

The invention discloses bacillus velezensis capable of tolerating various environmental pollution and promoting growth and application of the bacillus velezensis. A plant endophyte bacillus velezensis L381 strain is identified in wild rice, and the strain is high in environmental adaptability, can grow in the environment with the temperature of 15-40 DEG C and the pH value of 5-8, and can tolerate the NaCl concentration of 4%; the rice growth promoting agent has a good growth promoting function, can secrete auxin IAA, solubilize phosphorus, dissolve potassium and secrete siderophores, and can effectively promote rice growth. Meanwhile, the strain has stress resistance to environmental stress such as heavy metals and antibiotics, and tetracycline can be degraded; the strain has a wide antibacterial spectrum, and can be used as a biocontrol bacterium for preventing and treating various plant diseases. The plant endophyte L381 can adapt to variable temperature conditions and variable soil environments in the natural environment, has very strong practical application potential, not only improves the functions of bacillus velezensis, but also widens the application range of the strain.

The invention discloses a saline-alkaline tolerant growth-promoting bacillus velezensis AH216 and application thereof, and belongs to the technical field of microbiology and biologica.Bacillus velezensis AH216 is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC No: M 20241496. The saline-alkaline tolerant growth-promoting bacillus velezensis AH216 has the advantages that the saline-alkaline tolerant growth-promoting bacillus velezensis AH216 can be used for preparing saline-alkaline tolerant growth-promoting bacillus velezensis AH216; the bacillus velezensis AH216 provided by the invention can inhibit the growth of pathogenic bacteria of cotton fusarium wilt, and has the growth promoting functions of dissolving potassium, generating indoleacetic acid, cellulase, protease, siderophore and the like; meanwhile, the bacillus velezensis AH216 can tolerate a highly saline-alkaline environment, can improve agronomic characters such as the plant height, the biomass and the leaf area in the corn seedling stage in common soil and saline-alkaline soil, and can promote the development of a corn root system.

The invention discloses an algae-controlling bioactive preparation as well as a preparation method and application thereof. The preparation method comprises the following steps: inoculating bacillus velezensis HY16 in a bioactive substance fermentation culture medium and culturing; the culture temperature is 35-40 DEG C, and the culture time is 32-48 hours. The algae-controlling bioactive preparation provided by the invention has good capability of inhibiting growth of microcystis aeruginosa, and the algae-lysing rate of the algae-controlling bioactive preparation on microcystis aeruginosa in an aquarium system can reach 97% or above. The algae-controlling bioactive preparation prepared from the bacillus velezensis HY16 fermentation active liquid is stable in property, safe, environment-friendly and simple to apply, can be used for effectively and biologically controlling and repairing an aquarium water body with microcystis aeruginosa, is remarkable in effect, and has good market application prospect and value.

The invention discloses bacillus velezensis YB-1652, a biocontrol microbial inoculum and application of the biocontrol microbial inoculum, and aims to solve the technical problem of lack of effective biological control measures for continuous accumulation of peanut phenolic acid autotoxic substances and pathogens in continuous cropping. According to the application, a bacillus velezensis YB-1652 strain is separated and screened from rhizosphere soil of continuous cropping peanuts, and the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.36152. The strain has the capability of efficiently degrading phenolic acid compounds, relieves continuous cropping obstacles and improves the soil environment; the compound has a relatively strong inhibition effect on southern blight and root rot of peanuts, and the occurrence rate of soil-borne diseases is reduced; meanwhile, peanut growth can be promoted; the bacillus amyloliquefaciens has siderophore, cellulase, beta-glucanase, amylase power and protease production capacity. The YB-1652 strain and the preparation thereof can provide technical support for restoration of peanut continuous cropping obstacles, provide bacterial source guarantee for prevention and treatment of peanut soil-borne diseases, replace or reduce use of chemical pesticides and improve food and ecological environment safety, and have good economic and social benefits.

The invention belongs to the technical field of plant disease control, and particularly relates to bacillus velezensis and application thereof. The bacillus velezensis strain is separated and screened from rhizosphere soil of wheat in a main wheat area in Hebei Province, the growth characteristics and physiological and biochemical characteristics of the bacterial colony are identified, then 16S rDNA sequencing is carried out, Blast homology comparison is carried out in a GenBank database, the bacterial strain is identified to be bacillus velezensis through the analysis, and the bacillus velezensis strain is identified to be bacillus velezensis. The fungicide containing the bacillus velezensis has a good prevention and treatment effect on wheat stem rot through seed coating.

The invention relates to bacillus velezensis, a biocontrol inoculant prepared from the bacillus velezensis and application of the biocontrol inoculant, and belongs to the technical field of biological inoculants. The bacillus velezensis provided by the invention is bacillus velezensis and is named as JK1, the preservation unit is China General Microbiological Culture Collection Center, the preservation address is Institute of Microbiology, Chinese Academy of Sciences, No.3, No.1 Yard, West Beichen Road, Chaoyang District, Beijing, the number of the preservation center is CGMCC No.31375, and the preservation time is July 19, 2024. The bacillus JK1 disclosed by the invention has relatively excellent bacteriostatic action on different pathogenic bacteria regardless of living bacteria, supernate or cell lysis solution. The bacillus JK1 is high in living ability and wide in application range of nutrient sources, temperature, humidity and pH value. The compound has no pathogenicity to fruits and vegetables, has good tolerance to broad-spectrum bactericides, and has a great application prospect.

The invention relates to the technical field of biological control, in particular to bacillus velezensis JNJK-1, a microbial agent and application of the bacillus velezensis JNJK-1 and the microbial agent in edible fungus disease control, the bacillus velezensis JNJK-1 is preserved in China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CMCC No.31075. The novel bacillus velezensis JNJK-1 is screened out for the first time, and the bacillus velezensis can be applied to biological control of edible mushroom diseases and has a broad-spectrum inhibition effect on pathogenic bacteria of edible mushrooms. Meanwhile, the inventor also finds that the bacillus velezensis JNJK-1, curcumin and sodium alginate are compounded into the microbial agent, so that the inhibition effect on the pathogenic bacteria of the edible fungi can be improved, and the microbial activity can be maintained.

The invention relates to the technical field of microorganisms, in particular to bacillus velezensis F0b and an application of the bacillus velezensis F0b. The bacillus velezensis F0b is preserved in the Guangdong Microbial Culture Collection Center on April 26, 2024, the preservation date of the bacillus velezensis F0b is April 26, 2024, and the preservation number of the bacillus velezensis F0b is GDMCC (China General Microbiological Culture Collection Center): 64566. The bacillus velezensis has prevention and / or control effects on pyricularia oryzae, cabbage sclerotinia sclerotiorum, tomato fusarium wilt, banana fusarium wilt, rice leaf spot, peronophythora litchii, soybean carbon rot, colletotrichum capsici and corn leaf curvularia, and can be used for preparing broad-spectrum microbial source bactericides. The fermentation liquor of the bacillus velezensis can generate amylase, carboxymethyl cellulose and protease, and the fermentation liquor of the bacillus velezensis has prevention and / or control effects on vegetable pathogenic fungal diseases, namely cabbage sclerotiniose or pepper anthracnose.

The invention belongs to the field of microorganisms, and relates to a bacillus velezensis BLS-27 and a fungicide and application thereof, the bacillus velezensis BLS-27 is preserved in China General Microbiological Culture Collection Center on October 21, 2024, the preservation number is CGMCC No.32274, and the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. The strain BLS-27 has an inhibition effect on wild jujube anthracnose pathogenic bacteria, can effectively inhibit various plant disease pathogenic bacteria, shows broad-spectrum antibacterial activity, is environment-friendly and can be widely applied to plant disease control.

The invention relates to the technical field of agricultural microbial agents, in particular to bacillus velezensis as well as a separation method and application thereof. The bacillus velezensis is preserved in the China General Microbiological Culture Collection Center, the preservation date is May 17, 2024, the preservation number is CGMCC No.30687, the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing, the postcode is 100101, and the bacillus velezensis is classified and named as bacillus velezensis. The bacillus velezensis separated from the soil of the Ningboo garden of the Academy of Agricultural Sciences in Yitai City of Shandong Province or the fermentation inoculant thereof can be simultaneously used as a preparation raw material of a growth promoting agent, a yield increasing agent, a soil conditioner and a bio-organic fertilizer, and has multiple application scenes.

The invention discloses bacillus velezensis and application of the bacillus velezensis in prevention and treatment of basal stem rot, the classification name of the bacillus velezensis is bacillus velezensis GN-22, the bacillus velezensis is preserved in China Center for Type Culture Collection (CCTCC), the preservation number of the bacillus velezensis is CCTCC NO: M2025566, and the preservation date is March 24, 2025. The bacillus velezensis GN-22 disclosed by the invention belongs to rhizosphere growth-promoting bacteria, has a remarkable inhibition effect on different pathogenic fungi such as fusarium graminearum, fusarium pseudograminearum, fusarium asiaticum, fusarium verticillioides and fusarium oxysporum, and plays an important role in biological control of diseases such as corn and wheat stem rot; meanwhile, the strain has a growth promoting effect and can promote corn growth. The strain provided by the invention has the advantages of simple culture conditions, easiness in preservation, easiness in industrial production and good development and application prospects.

The invention belongs to the field of biological prevention and control of plant diseases, and particularly discloses a biocontrol bacterium bacillus velezensis and application thereof in preparation of a biocontrol inoculant for preventing and controlling pepper phytophthora blight, the strain is bacillus velezensis Y426-7, is preserved in China General Microbiological Culture Collection Center (CGMCC) on September 23, 2024, and has the preservation number of CGMCC NO.32041, and the preservation number is CGMCC NO.32041. The biocontrol bacterium is bacillus velezensis Y426-7. The bacillus velezensis is preserved in No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing, and can be used for preparing a biocontrol inoculant for preventing and treating pepper phytophthora blight. Compared with the prior art, the bacillus velezensis Y426-7 obtained by the invention has an obvious antibacterial effect on phytophthora capsici and various crop phytophthora blight bacteria under an indoor in-vitro condition; furthermore, the 2.5 * 10 < 9 > CFU / g wettable powder prepared from the bacillus velezensis Y426-7 has a relatively good prevention and treatment effect and a certain yield increasing effect on the pepper phytophthora blight in the field.

The invention belongs to the technical field of white spirit brewing, and particularly relates to bacillus velezensis BL-LM and application thereof in preparation of special-flavor white spirit yeast. The bacterial strain is classified and named as Bacillus velezensis, and is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.30130. The invention further discloses a preparation method of the bacterial strain. When the bacillus velezensis BL-LM is added into starter propagation raw materials, in the starter propagation process, the top fire temperature of a starter blank is high, the temperature rising time is long, the liquefying power and saccharifying power activity of the starter blank is higher, the capacity of producing white spirit characteristic flavor substances such as pyrazines, guaiacol and 4-vinyl guaiacol is higher, and the content of organic acid is high. The bacillus velezensis BL-LM disclosed by the invention has a relatively good promotion effect on physicochemical property optimization and flavor substance generation of the specially-fragrant yeast, and has a very obvious effect in the aspect of modifying the quality of the specially-fragrant yeast.

The invention discloses a compound microbial fertilizer and application thereof in field planting. The survival rate of the paenibacillus mucilaginosus HX-02 disclosed by the invention can be up to 62.8% after 170d under the condition of 38% of nitrogen, phosphorus and potassium. The strain is organically combined with bacillus velezensis RKN1111 and a nitrogen-phosphorus-potassium inorganic fertilizer (N + P2O5 + K2O = 38%), the compound microbial fertilizer is developed, the viable count of effective bacteria is not less than 1.5 billion / g, and the viable count of paenibacillus mucilaginosus is not less than 0.5 billion / g. The compound microbial fertilizer taking the strain as a main functional bacterium is applied to field corn planting, can replace part of chemical fertilizers and increase soil fertility, can reduce the use amount of the chemical fertilizers by 15.56%, and achieves the effects of promoting the growth of field crops and increasing the yield by 10.2%. The paenibacillus mucilaginosus HX-02 is separated from soil, is harmless to human, livestock and environment, and meets the requirements of green plant protection and agricultural sustainable development.

The invention discloses bacillus velezensis Scm3 and application thereof.The bacillus velezensis Scm3 is obtained by screening a strain Scm with an inhibition effect on aeromonas hydrophila from turbot intestinal contents and then conducting ultraviolet mutagenesis on the strain to obtain a strain Scm3 with an enhanced antagonism effect on aeromonas hydrophila, and the strain Scm3 is applied to the preparation of the bacillus velezensis Scm3 and the application of the bacillus velezensis Scm3 to prepare the bacillus velezensis Scm3. 16SrDNA (deoxyribonucleic acid) sequence identification and genome sequencing prove that the strain is bacillus velezensis, and the inhibition mechanism of the bacillus velezensis Scm3 on aeromonas hydrophila is researched by a non-contact co-culture method.

The invention belongs to the field of microbial secondary metabolites, and particularly relates to bacillus velezensis as well as metabolites and application thereof. The bacillus velezensis is classified and named as Bacillus velezensis Z-1, and is preserved in the Guangdong Microbial Culture Collection Center, the preservation number is GDMCC 64975, and the preservation date is August 12, 2024. The bacillus velezensis Z-1 provided by the invention has a relatively strong inhibition effect on mango colletotrichum gloeosporioides in vitro, and the bacteriostasis rate of fermentation liquor can reach 73.33%. The prepared Z-1 bacterial liquid is used for soaking mango fruits, the bacterial liquid can effectively prolong the shelf life of the picked mangoes, the storage period can reach 24 days, in addition, the softening rate of the mangoes is obviously reduced, the fruit skin is full, the mangoes are fresh and turquoise, and the sense organ and the storage quality are maintained at a relatively high level. The method provides a certain new theoretical basis for disease control, storage and fresh-keeping of the harvested mangoes.

The invention belongs to the technical field of agriculture, and particularly provides a compound microbial agent and application thereof. The compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02, and the compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02, and the compound microbial agent is prepared from bacillus velezensis RKN1111, bacillus subtilis N-3 and paenibacillus mucilaginosus HX-02. The compound microbial agent can effectively improve the pH and EC of saline alkali soil, increase the content of alkali-hydrolyzable nitrogen, available phosphorus and quick-acting potassium in the soil, and play a significant role in increasing the plant height, stem diameter, chlorophyll content and aboveground biomass of corn plants in coastal saline-alkali soil.

The invention relates to the technical field of microorganisms and bio-organic fertilizers, and particularly discloses a bio-organic fertilizer for preventing and treating rhizome diseases of horseradish and application of the bio-organic fertilizer, the bio-organic fertilizer comprises the following components: component A: a bacillus velezensis microbial inoculum with the preservation number of CCTCC NO: M 2022923 and a trichoderma yunnanense microbial inoculum with the preservation number of CCTCC NO: M 2025645; the component B is prepared from soybean meal, vinegar residues, charcoal, wollastonite powder and allicin. The biological organic fertilizer disclosed by the invention can be used for increasing the content of growth hormones such as salicylic acid (SA), jasmonic acid (JA) and ethylene (ET) and phytoalexin as well as the activity of chitinase and beta-1, 3-glucanase of a wasabi root system, and has a relatively good prevention and treatment effect on a black heart disease caused by infection of phoma wabi Yokog and a soft rot disease caused by infection of pectobacterium carotovorum subsp. Carotovorum (Pcc). The biological organic fertilizer disclosed by the invention has a relatively good prevention and treatment effect on the soft rot disease caused by infection of the phoma wabi Yokog and a relatively good prevention and treatment effect on the soft rot disease caused by infection of the phoma wabi subsp. Carotovorum (Pcc).

Optimization of the formula of a culture medium for industrially producing a Bacillus velezensis TCS001 fermentation broth and culture process conditions therefor. By using the culture medium and the culture process conditions, not only can the fermentation production cost be reduced, but also the effective viable bacterium count and the spore count in the Bacillus velezensis TCS001 fermentation broth can be improved, so that the fermentation broth can be used for industrial production and market promotion and application. Provided is a lipopeptide-compound-containing mixture separated from a Bacillus velezensis TCS001 fermentation broth. By further optimizing the formula of the culture medium for the Bacillus velezensis TCS001 fermentation broth and the culture fermentation process conditions, the output and yield of lipopeptide compounds in the fermentation broth are successfully improved, providing an efficient and cost-effective solution for the control of plant diseases.

The invention relates to the technical field of microorganisms and particularly discloses bacillus velezensis for producing tetramethylpyrazine and application of the bacillus velezensis, the preservation number of the strain is CCTCC NO: M20232058, and the bacillus velezensis is obtained by separating and purifying from high-temperature Daqu of Maotai-flavor liquor in the liquor industry of Jin-brand Maotai Town in Guizhou. The bacillus velezensis disclosed by the invention can produce 1875.4 mg / L of tetramethylpyrazine by performing shake flask fermentation on a liquid culture medium for 7 days, and the tetramethylpyrazine can reach 4810.8 mg / L by optimizing a culture medium formula and culture conditions. The bacillus velezensis is applied to small-scale brewing of Maotai-flavor liquor, the content of tetramethylpyrazine in the Maotai-flavor liquor reaches 34.5 + / -1.4 mg / L and is increased by 325.93% compared with a contrast, and the bacillus velezensis can be used for increasing the content of tetramethylpyrazine in the Maotai-flavor liquor.

The invention discloses bacillus velezensis XF-8 and application of the bacillus velezensis XF-8 in prevention and treatment of tomato bacterial wilt caused by Ralstonia solanacearum, and belongs to the technical field of microorganisms. The bacillus velezensis XF-8 capable of antagonizing Ralstonia solanacearum is obtained through separation and screening, and it is found that the bacillus velezensis XF-8 also has an excellent inhibition effect on various pathogenic fungi and shows broad-spectrum antibacterial activity of the bacillus velezensis XF-8. The bacillus velezensis XF-8 has a good inhibition effect on tomato bacterial wilt, and the control effect of the bacillus velezensis XF-8 in potted tomatoes reaches 74.25%. Results of the invention show that the bacillus velezensis XF-8 has a great application prospect in prevention and treatment of tomato bacterial wilt, and a good biocontrol resource is provided for research and development of a biocontrol agent for tomato bacterial wilt.

The invention belongs to the technical field of potato scab prevention and treatment, and particularly relates to a complex microbial inoculant for preventing and treating potato scab and application of the complex microbial inoculant. The complex microbial inoculant provided by the invention comprises bacillus velezensis BEV2 and bacillus atrophaeus FM2-4, wherein the effective viable bacterium concentration of the bacillus velezensis BEV2 and the effective viable bacterium concentration of the bacillus atrophaeus FM2-4 in the complex microbial inoculant are respectively 1-3 * 10 < 8 > CFU / m. The complex microbial inoculant provided by the invention can effectively prevent and treat the potato scab, reduce the morbidity of the potato scab and improve the yield and quality of potatoes, and has the advantages of being not easily influenced by the environment and being harmless to the environment.