1580 results about "Plant roots" patented technology

The invention relates to the technical field of water environment treatment, in particular to a water environment ecological treatment method and system based on a constructed wetland, and the method comprises the following steps: measuring the dissolved oxygen concentration, ammonia nitrogen concentration, total phosphorus concentration, water temperature and pH value of a root zone in the constructed wetland, and calculating the pollutant concentration distribution value and plant root system distribution density of each monitoring point; and obtaining a water quality root distribution characterization value. In an artificial wetland environment, the concentration of dissolved oxygen, the concentration of ammonia nitrogen, the concentration of total phosphorus, the water temperature and the pH value of a root zone are measured, the concentration distribution of pollutants is calculated, numerical calculation is carried out in combination with the distribution density of plant root systems, water quality root system distribution characterization is constructed, spatial heterogeneity analysis of wetland water quality is enhanced, and the targeting of pollutant degradation is optimized. Based on water quality root system distribution characterization, plant growth cycle parameters are calculated in combination with water quality parameters, association between water quality dynamic changes and plant growth states is constructed, and the adaptability of wetland ecological regulation and control is improved.

The present disclosure is drawn to methods of utilizing nucleic acid barcodes and corresponding amplifying sites in cells in which the barcodes naturally occur. These barcodes and amplifying sites are reconfigured into a single nucleic acid cassette that provides for ease of use in tagging particular species, strains, or variants of cells, each with a different barcode. These barcodes can be used to track the colonization capabilities of the barcoded cells. The present disclosure further provides for assays that utilize natural barcodes to measure relative microbial colonization ability of a plant root system.

The invention discloses a rhizosphere deposited carbon flux real-time monitoring method adopting a sensor array, and relates to the technical field of soil carbon cycle monitoring, and the method comprises the steps: determining a layered sampling depth and a horizontal concentric circle partition range based on the three-dimensional distribution characteristics of a target plant root system, and mapping the layered sampling depth and the horizontal concentric circle partition range to a preset three-dimensional grid coordinate system; gas sensors and environmental parameter sensors are deployed according to root system partitions, and a multi-dimensional sensor array is constructed. Through the three-dimensional grid coordinate system and the root system density gradient model, accurate spatial mapping of rhizosphere carbon flux is realized, high matching of sensor layout and root system biomass distribution is ensured by utilizing division of vertical layering and horizontal concentric circle partition, and the gas sensor and the environmental parameter sensor are cooperatively deployed, so that the reliability of the system is improved. The device can capture instantaneous changes such as root exudate pulse and microbial respiration, generates a continuous and consistent carbon flux data set, and provides a high-resolution dynamic observation basis for researching plant-soil-microbial interaction.

The invention provides an interlaced vertical board agriculture and light complementation method. The interlaced vertical board agriculture and light complementation method comprises a vertical rod and a beam or / and a connecting piece; a plurality of photovoltaic panels are laterally fixed on the vertical rods or / and the beams through connecting pieces, so that a photovoltaic vertical board unit is formed; planting spaces for growth of crops or woods or pasture are formed in the row spacing or the spacing of the photovoltaic vertical board units. Stay cables do not need to be used, construction is easy, cost is low, pile foundations are buried shallowly, damage to soil structures and plant root systems can be avoided as much as possible, construction difficulty and cost can be reduced, and complementary benefits of photovoltaic power generation and agricultural production can be improved.

The invention discloses an alpine grassland no-tillage restoration suitability evaluation method based on a 3S technology, and particularly relates to the technical field of data processing. Through the combination of multi-temporal satellite images and global positioning system data, the spatial dynamic change of the frozen soil layer of the alpine grassland and the long-term influence of the spatial dynamic change on vegetation growth are accurately obtained, and a frozen soil layer depth and distribution dynamic monitoring model is constructed based on multi-source remote sensing data and historical weather and soil temperature and humidity data. Analyzing the influence of freezing and thawing alternation on plant root growth; establishing a vegetation recovery potential index and a soil moisture supply index by combining the vegetation coverage and the dynamic change of the frozen soil layer, and generating a suitability partition map through a GIS spatial analysis and analytic hierarchy process; through field sampling and long-term vegetation growth monitoring data verification and model optimization, the accuracy of no-tillage restoration suitability evaluation is remarkably improved, and scientific and accurate decision support is provided for ecological restoration of alpine grassland.

Burkholderia, and a composition, use and usage method thereof. Provided are the Burkholderia, and a composition comprising the strain and / or a metabolite, culture, fermentation broth and / or extract thereof. The Burkholderia or the composition thereof can generate a siderophore, induce plants or seeds thereof to generate systemic resistance to plant pathogens, and reduce the chemotaxis of plant pathogens to plants, so that prevention and treatment of plant diseases and insect pests are achieved. In addition, plant root system development can be promoted, a nitrogen fixation effect is provided, a phosphate solubilization effect is provided, indoleacetic acid is generated, and weeds are removed, thereby promoting plant growth.

The invention belongs to the field of agricultural chemistry and bio-fertilizer, and discloses a fertilizer synergist based on polyaspartic acid, alginate oligosaccharide and mannan oligosaccharide and a preparation method of the fertilizer synergist. According to the synergist, polyaspartic acid derived from plant source amino acid, alginate oligosaccharide extracted from natural brown algae and mannan oligosaccharide extracted from plants are used as main raw materials, and the polyaspartic acid, the alginate oligosaccharide and the mannan oligosaccharide cooperate to form an induction-complexation-adsorption three-effect-in-one mechanism, wherein the alginate oligosaccharide and the mannan oligosaccharide induce plant root activity and stress resistance gene expression; the polyaspartic acid is dominated to form a multi-point weak complex network, so that slow release and controlled release of nitrogen and potassium ions are realized; the three components cooperate on the surface of soil colloid to form an adsorption layer, and nutrient leaching loss is reduced. The preparation process adopts a green process of'enzymatic pretreatment-segmented complexing-low-temperature forming ', so that the oligosaccharide activity is maintained, and the use of an organic solvent is avoided. The obtained synergist can significantly improve the nitrogen utilization rate and the root activity and prolong the fertilizer efficiency period, and is suitable for green and efficient agricultural production of various crops.

The invention discloses an ecological floating bed for ecological environment protection, and relates to the technical field of ecological floating beds. The ecological floating bed comprises a floating plate and placing grooves uniformly formed in the floating plate; the planting mechanisms are uniformly arranged in the placement groove and are used for planting aquatic plants; the elastic pieces are arranged on the planting mechanisms and are used for reducing the flow rate of water flow entering the planting mechanisms; the flow guide plates are arranged on the outer side of the elastic piece at equal angles and used for reducing impact of water flow on the roots of the aquatic plants, and the auxiliary driving mechanisms are arranged at the two ends of the flow guide plates and used for driving the flow guide plates to rotate synchronously in the same direction and driving the elastic piece to stretch and deform in a self-adaptive mode. On one hand, the flow guide plates play a role in flow guide and dispersion in the water flow direction, impact damage to plant roots caused by water flow directly is effectively reduced, on the other hand, part of water flow can flow to the planting barrel through gaps between the flow guide plates and the elastic pieces, the retention time of water entering the planting barrel is prolonged, and therefore the purification effect of plants on the water is improved.

The invention discloses a preparation method and application of plant-derived extruded nano-vesicles, and relates to the technical field of biological medicines. The preparation method of the plant-derived extruded nano-vesicles comprises the following steps: juicing cleaned plant roots, stems, leaves, flowers or fruits to obtain plant juice, and filtering with gauze to obtain first filtrate; centrifuging the first filtrate at a low speed of 300-6000 * g to obtain a second filtrate; performing 8,000-20,000 * g centrifugation on the second filtrate for 0.5-3 hours at the temperature of 0-5 DEG C, so as to obtain a first precipitate; adding the first precipitate into a buffer solution, carrying out ultrasonic treatment, diluting, and sequentially passing through a filter membrane with the pore diameter of 0.4-10 microns and a filter membrane with the pore diameter of 0.1-0.4 microns, so as to obtain a third filtrate; and centrifuging the third filtrate, taking the precipitate, and resuspending to obtain the extruded nano-vesicles. Experimental detection shows that the extruded vesicles are similar to natural vesicles in characteristics, but the yield is far higher than that of the natural vesicles, and the extruded vesicles can serve as nano-carriers to be applied to a foundation or clinic.

The invention relates to the technical field of soil remediation, and discloses a method for synergistically remediating organic contaminated soil by combining microorganisms with plant root systems, which comprises the following steps: carrying out physicochemical property detection and condition adjustment on the contaminated soil in a target remediation area; applying a composition containing functional microorganisms and a controllable release activation component to the contaminated soil; plants with rhizosphere secretion ability are planted in the restoration area; plant root exudates are used for inducing the composition to release active components, so that microorganisms are activated, and organic pollutants are jointly degraded; and maintaining the repair cycle, and performing process regulation and control until the repair is completed. A double-layer microcapsule structure is constructed, the outer layer adopts chitosan and an induction material, and the outer layer can swell or disintegrate under the action of plant rhizosphere secretions, so that responsive release of active components of the inner layer is achieved, and the effect of improving release accuracy and microbial activation efficiency is achieved.

A plant holder for holding an amount of rooting (growing) media in which plant roots develop that electrically isolates the plant roots from an electric field used to deliver water and plant nutrients to that rooting media via a high-voltage, low-current electrospray system. A conductive material disposed proximate the rooting media receives electrically charged droplets including water or nutrients and passes the water or nutrients to the rooting media while directing the electrical charge to ground.

This invention discloses a microbial inoculant for controlling peanut root rot and its preparation method, belonging to the field of microbial materials technology. This invention screened and obtained a *Trichoderma harzianum* strain with highly efficient inhibitory effects against the pathogen causing peanut root rot. Firstly, the strain itself exhibits antagonistic activity against the peanut pathogen. Secondly, it was prepared as a spore suspension and fermented in solid-state with rice husks and wheat bran. During the solid-state fermentation process, the metabolites produced by *Trichoderma harzianum* promote the growth and development of plant roots, increasing plant biomass and yield. This microbial inoculant effectively controls peanut root rot, exhibiting good inhibitory effects against the pathogen, thus improving peanut quality and disease resistance. Furthermore, it improves soil ecological activity to a certain extent, making it worthy of application and promotion.

The invention relates to a potassium-dissolving bacterial agent containing yellow microspora fungi, a seed coating solution and application of the potassium-dissolving bacterial agent and the seed coating solution, and belongs to the technical field of microorganisms. In order to solve the technical blank of the yellow microspora fungi in the aspects of potassium dissolving and kidney bean growth promotion in the prior art, the invention provides the potassium-dissolving microbial inoculum containing the yellow microspora fungi, the yellow microspora fungi are respectively yellow microspora landrace and yellow microspora Xing'an, and the potassium-dissolving microbial inoculum has better potassium-dissolving activity and can be used for preparing the potassium-dissolving microbial inoculum containing the yellow microspora fungi. Symbiosis with plant root systems can be achieved, and plant growth and development are promoted; the kidney bean seed coating liquid containing the potassium bacteria agent can promote accumulation of biomass of kidney bean plants, the setting rate of kidney beans is increased, and the yield of the kidney beans is increased; when the spore concentration is 1 * 10 < 6 > / mL to 1 * 10 < 8 > / mL, the seed coating solution has an obvious and stable growth promoting effect on kidney beans. The potassium-dissolving bacterial agent and the seed coating solution provided by the invention can be applied to soil potassium dissolving and promotion of kidney bean growth.

The invention relates to the technical field of plant genetic engineering, and discloses application of a soybean low-phosphorus-tolerant gene GmAP2 to improvement of low-phosphorus stress tolerance of plants. Research finds that under the condition of low phosphorus stress, the expression level of the GmAP2 gene in plants is remarkably increased. The GmAP2 gene is subjected to heterologous overexpression in arabidopsis thaliana, so that stress on plants under a low-phosphorus condition can be effectively relieved, the fresh weight and lateral root length of the arabidopsis thaliana can be remarkably increased, and the growth of the arabidopsis thaliana plants is promoted. In addition, under the low-phosphorus condition, overexpression of the GmAP2 gene can improve the phosphorus deficiency symptom of the soybean, improve the absorption of phosphorus nutrients by plants and promote the growth of plant roots and leaves. Therefore, the GmAP2 gene plays a very important role in dealing with the phosphorus starvation stress environment by the plant.

The utility model discloses a retro ceramic flowerpot capable of automatically replenishing water. The retro ceramic flowerpot comprises a water storage tank; the planting groove is formed in the top of the water storage tank, a supporting bottom plate is detachably installed in the middle of the planting groove, a cotton thread used for supplementing water is arranged in the middle of the supporting bottom plate, a fixing hook plate is arranged on the side edge of the supporting bottom plate, and the top of the fixing hook plate is hooked to the edge of the planting groove. The pulling-out device is used for pulling out the supporting bottom plate from the planting groove; the automatic water replenishing device has the advantages that by means of the built-in cotton threads and the filter holes, the automatic water replenishing function of soil from the water storage tank to the planting tank is achieved, it is ensured that plant roots continuously obtain a proper amount of water, and frequent manual watering is not needed; the arrangement of the supporting bottom plate and the fixed hook plate makes it very convenient to check and transplant plants; the whole plant and the soil of the plant can be easily lifted only by lifting the fixed hook plate, so that the damage to the plant in the transplanting process is reduced.

The invention discloses a plant root system three-dimensional ventilation system based on a water-soluble PVA film and a use method of the plant root system three-dimensional ventilation system. The plant root system three-dimensional ventilation system comprises at least one water-soluble breathing core packaging unit, and the water-soluble breathing core packaging unit is formed by wrapping ventilation medium particles with a PVA packaging layer; a layer of breathable medium particles is laid at the bottom of the flowerpot, and the water-soluble breathing core packaging unit is laid on the inner wall of the flowerpot in a surrounding mode; the planting soil is filled on the breathable medium particles and on the inner side of the water-soluble breathing core packaging unit; a layer of breathable medium particles is laid on the planting soil; after the PVA packaging layer is dissolved by watering, the breathable medium particles and the planting soil are attached to form a three-dimensional breathable system. The air circulation efficiency in the flowerpot is remarkably improved, and the root stuffy and rotten problems are solved. The system has environmental protection property, adaptability and long-term effect, and is suitable for family gardening and large-scale planting.

The invention relates to the technical field of cultivation and planting devices, and discloses a three-dimensional cultivation and planting device with an atomization structure, the three-dimensional cultivation and planting device comprises a rack and a rotating column, the rotating column is rotatably connected to the inner wall of the right side of the rack through a bearing, a spur gear is fixedly connected to the rotating column, and a motor is fixedly connected to the outer wall of the left side of the rack; a spur gear is arranged on the rack and makes contact with a toothed chain, a hinge rod is fixedly connected to the outer wall of the side face of the toothed chain, an adjusting mechanism is arranged on the rack and comprises an auxiliary mechanism, the adjusting mechanism comprises an arc-shaped plate, and the arc-shaped plate is hinged to the outer wall of the side face of the hinge rod. In the invention, a nutrient solution is converted into vaporific particles through the atomizing nozzle frame and is directly sprayed to the root system of a plant, so that the root system efficiently absorbs water, nutrients and oxygen in a suspended state, a matrix or soil is not needed, the propagation of soil diseases and insect pests is reduced, the nutrient utilization rate is also improved, and healthy growth and high yield of the plant are facilitated.

The invention discloses a soybean phospholipid disease-preventing and root-promoting microbial agent as well as a preparation method and application thereof, and belongs to the technical field of microorganisms. The microbial agent comprises a microbial composition, modified enzymolysis soybean phospholipid, a carrier and auxiliary components. According to the invention, the modified enzymolysis soybean phospholipid and microorganisms are combined to achieve a synergistic effect. According to the method, soybean phospholipid is modified and subjected to enzymolysis, and the steps of pretreatment, stepped low-temperature treatment, enzymolysis treatment, enzyme inactivation and purification and the like are carried out, so that the quality and performance of the soybean phospholipid are improved, the rhizosphere colonization rate of strains can be increased, the disease prevention and root promotion effects can be improved, the soil micro-ecological environment can be improved, and good growth conditions are created for plant root systems; and the disease-preventing and root-promoting effects of the microbial agent are further enhanced. The microbial agent disclosed by the invention can be used for remarkably reducing the morbidity of wheat sharp eyespot and reducing the use amount of chemical pesticides, can also be applied to planting of other crops, and can play a role in preventing and controlling various plant diseases and promoting root growth.

The invention relates to the technical field of gene engineering, in particular to a plant low-phosphorus-resistant important gene GsMYB10 and application thereof. Researches show that the expression of the GsMYB10 gene is induced to be up-regulated under the stress of low phosphorus, and under different phosphorus concentration treatment conditions, the over-expression of the GsMYB10 can obviously increase the biomass of a transgenic plant, so that the plant growth is promoted under the low-phosphorus condition; meanwhile, overexpression of GsMYB10 can improve the tolerance of plants to low-phosphorus stress, and reduce the inhibition effect of low phosphorus on plant root growth.

The invention discloses a stepped layered soil fixation and slope protection structure based on plant root system bionics, and belongs to the technical field of ecological slope protection, the stepped layered soil fixation and slope protection structure comprises a stepped frame, a soil fixation module and a water circulation module, the stepped frame is composed of a plurality of slope protection units, the slope protection units are arranged in a stepped mode along a slope surface to form a multi-layer stepped platform, and the water circulation module is connected with the soil fixation module. The adjacent step platforms are connected through anchor rods, the slope protection units are hollow, and root system imitating grooves are formed in the slope protection units. The soil fixation module is arranged in the slope protection unit and is divided into a base layer module, a middle module and a surface layer module from bottom to top; the water circulation module is connected with the step platforms of all the layers and supplies water to vegetation. According to the layered plant root system bionic structure, the anti-sliding and anti-scouring capacity is improved, the stepped structure is adopted, slope runoff is dispersed through the stepped platform, meanwhile, the growth space of plants is provided, engineering materials and the plants are combined, the efficient, ecological and lasting soil fixation and slope protection structure is formed, construction is convenient and fast, and the structure can adapt to complex terrains.

The invention relates to a self-adaptive seeding density regulation and control seeder, which realizes optimization of seeding parameters by dynamically adjusting seeding density, seeding quantity, seeding depth and fertilization quantity, realizes annular fertilization by rotating a fertilization pipe, synchronously operates the fertilization pipe and a covering shovel, concentrates fertilizer around plant root systems, promotes development and extension of the root systems, and improves the seeding density. High-pressure gas is used for assisting seeding and fertilization, blockage is prevented, smooth flowing of seeds and fertilizer is ensured, the quantity is accurately controlled through the metering seed box and the quantitative fertilization box, resource utilization is optimized, resource waste is reduced, and the crop yield and quality are improved; through dynamic adjustment of sowing parameters, annular fertilization, an anti-blocking function and synchronous combined action of seed and fertilizer, the planting quality is improved, it is ensured that seeds are located at the most suitable soil depth, diseases are reduced, the health condition of crops is improved, the yield and quality of the crops are improved, resource waste is reduced, and the intelligent level of agricultural production is improved by integrating the measures.

Bacilli and combinations of Bacilli capable of germinating and growing under low temperature conditions; of associating with plant roots; of enhancing plant health, growth, and yield; and of protecting plants against phytopathogenic pests, such as Botrytis, Fusarium, Phytophthora and Pythium.

The invention relates to the technical field of soil improvement, in particular to a saline-alkali soil improvement method which comprises the steps of dividing a to-be-improved saline-alkali soil area, detecting the saline-alkali distribution depth of the area and determining the ploughing depth by combining the depth of a target plant root system. Adjusting parameters of the ploughing device according to the difference between the depth and the soil permeability coefficient; setting initial leaching water pressure according to the ploughing parameters, detecting the concentration of sodium ions in discharged water, and adjusting the pressure according to the change curve of the period; when the slope of the curve reaches a preset value, measuring the proportion of sodium ions adsorbed by soil colloid, and comparing the proportion with a standard interval to judge whether continuous spraying is carried out or not. Whether the soil bulk density is detected or not is determined according to the result, ploughing parameters are fed back and adjusted according to the bulk density result, and the improvement requirement is met. According to the method, the ploughing parameters are adjusted through the target ploughing depth and the soil permeability coefficient difference value, and the leaching water pressure is adjusted according to the sodium ion change curve, so that the sodium ion removal efficiency is improved, and then the subsequent improvement efficiency of the saline-alkali soil is improved.

The present disclosure is drawn to methods of utilizing nucleic acid barcodes and corresponding amplifying sites in cells in which the barcodes naturally occur. These barcodes and amplifying sites are reconfigured into a single nucleic acid cassette that provides for ease of use in tagging particular species, strains, or variants of cells, each with a different barcode. These barcodes can be used to track the colonization capabilities of the barcoded cells. The present disclosure further provides for assays that utilize natural barcodes to measure relative microbial colonization ability of a plant root system.

The invention discloses a bactericidal composition containing WML-01 and a triazole compound, and is characterized in that the bactericidal composition is composed of the WML-01 and the triazole compound, and the mass ratio of the WML-01 to the triazole compound is (10: 1)-(1: 10). The bactericidal composition taking the WML-01 and the triazole medicament as effective components has a synergistic effect on prevention and treatment of rice bakanae disease, wheat stem rot, wheat scab, plant root rot and sclerotinia rot of colza, can effectively improve the disease prevention and treatment effect, reduces the pesticide consumption, delays the occurrence of drug resistance, improves the crop yield, and has a good application prospect. The method is safe, effective and economical, and has a wide market application prospect.

The invention belongs to the field of preparation of soil conditioners, and particularly relates to a soil loosening and root promoting soil conditioner and a preparation method thereof. A polymer formed by vinyltriethoxysilane, polyacrylic acid and coumarin under the catalytic action of citric acid is mixed with porous powder obtained after crushing and nutrient organic matter, and freeze-drying is performed to obtain the soil-loosening improved fermentation substrate which can be slowly released in soil; polyaspartic acid and acetylchitosamine are cross-linked under the catalytic action of N-hydroxysuccinimide, root-promoting nutrition powder and auxiliary root-promoting components are mixed, and the obtained composite root-promoting agent can significantly promote the growth of plant root systems; a porous structure contained in the protective stability maintaining agent can provide a relatively stable microenvironment for effective components, and the soil loosening and root promoting agent is mixed with the soil loosening and improving fermentation substrate and the composite root promoting agent, so that the prepared soil loosening and root promoting soil conditioner is remarkable in soil loosening and root promoting effect, long-acting and stable, small in dosage, obvious in effect and stable in conditioning effect after being stored.

The invention relates to the technical field of microbial agents, and discloses a plant root system growth-promoting microbial agent screening method which comprises the following steps: firstly, collecting rhizosphere microbiome data and corresponding crop growth phenotype data of different target crops in growth stages and soil environments; then establishing a microorganism-phenotype prediction model based on the data, and obtaining two groups of key growth promoting strains through feature importance analysis and microorganism interaction network analysis; finally, according to the key strains and the prediction model, screening out a microbial inoculum formula with the optimal expected growth promoting effect. According to the invention, a set of systematic screening scheme for the plant root growth-promoting microbial agent is established, by comprehensively considering the growth-promoting effect and the interaction relationship of the strains, an efficient and synergistic dominant strain combination can be screened out, the pertinence and the effectiveness of the plant root growth-promoting microbial agent are remarkably improved, and the method has a good application prospect in the field of microbial fertilizer development.

The invention discloses a salt-tolerant brevibacillus for promoting growth and preventing and controlling plant diseases and application of the salt-tolerant brevibacillus. The brevibacillus halotolerans T101 is preserved in the Guangdong Microbial Culture Collection Center (GDMCC) on July 23, 2025, and the preservation number of the brevibacillus halotolerans T101 is GDMCC No: 66731. The brevibacillus halotolerans T101 is preserved in the Guangdong Microbial Culture Collection Center (GDMCC) on July 23, 2025. The strain T101 disclosed by the invention can effectively antagonize plant pathogenic fungi peronophythora litchii and plant pathogenic bacteria such as pseudomonas syringae, xanthomonas campestris, citrus canker pathogen and ralstonia solanacearum, can generate siderophores and plant growth hormone IAA, and can remarkably promote the growth of tomato root systems in a pot experiment. Therefore, the strain T101 can be used for preparing microbial preparation products for preventing and treating plant diseases and promoting plant root growth, and has important application potential in the aspects of microbial agents, biological fertilizers and the like for promoting plant growth and development.

The invention belongs to the technical field of agricultural biological control, and particularly relates to bacillus velezensis, a biological preparation and application of the bacillus velezensis in plant disease prevention and growth promotion. The bacillus velezensis is preserved in the China Center for Type Culture Collection, the preservation number of the bacillus velezensis is CCTCC NO: M 2025613, and the bacillus velezensis is classified and named as bacillus velezensis B54. Experiments show that the bacillus velezensis and the biological preparation thereof provided by the invention have broad-spectrum antagonistic activity, can effectively inhibit growth of pathogenic bacteria such as pythium spp and fusarium spp, induce plants to generate immune response, remarkably reduce the incidence rate of root rot and blight of the plants, can also generate plant growth stimulants, improve the development of plant root systems, improve the growth of the plant root systems and promote the growth of the plant root systems. The crop yield and quality are improved.

The invention belongs to the technical field of microorganisms, and particularly relates to a Prlisteria megatherium strain and application thereof. The invention provides a strain of Pristeria megaterium A3, and the preservation number of the Pristeria megaterium A3 is CGMCC (China General Microbiological Culture Collection Center) No. 31931. The prelisteria megatherium A3 can generate indoleacetic acid (IAA), and can directly promote the elongation of a plant root system, so that the opportunity that a plant is in contact with nutrient substances in soil is increased, the content of endogenous IAA in a plant body is increased, the expression of a plant defense gene is induced, and the stress resistance such as disease resistance and drought resistance of the plant body is improved. Meanwhile, the prelisteria megatherium A3 disclosed by the invention has phosphorus solubilizing capacity, and can convert phosphorus which is difficult to utilize into available phosphorus, so that the content of available phosphorus in soil is increased. In addition, the prelisteria megatherium A3 also has potassium dissolving capacity, and can improve the utilization rate of the fertilizer and promote the growth and development of plants and the absorption of the fertilizer.