503 results about "Biofertilizer" patented technology

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 relates to a microbial strain and application thereof, in particular to bacillus brevis, a microbial agent prepared from the bacillus brevis and application of the microbial agent. The invention provides the cold-resistant bacillus subtilis which has multiple functions of generating capsular polysaccharide, being high in salt resistance and cold resistance, promoting growth and disease resistance of plants in saline-alkali soil and the like. The bacterial strain can generate capsular polysaccharide, experiments prove that the bacterial strain has high capabilities of dissolving phosphorus, fixing nitrogen and producing siderophore, IAA, ACCD and cytokinin, and has strong antagonistic action on fusarium, curvularia and microplasmodium, and the generated capsular polysaccharide can promote salt tolerance of plants, so that the yield of the plants is increased, and the yield of the plants is increased. The bio-fertilizer is suitable for production of multifunctional bio-fertilizers with disease prevention, growth promotion, salt and alkali resistance, cold resistance and the like, is applied to production of saline-alkali soil grain crops, pasture and greenhouse commercial crops, has remarkable effects of promoting cold damage resistance, root development, prevention and control of root diseases, improvement of crop yield and the like, can reduce the use of chemical fertilizers and pesticides, and has a wide application prospect.

The invention discloses a power grid tower footing area vegetation restoration method based on biological source humic acid and application of the power grid tower footing area vegetation restoration method, and belongs to the technical field of ecological restoration and soil treatment. The technology aims at solving the problems of soil erosion and loss caused by environmental disturbance conditions such as vegetation damage in power grid construction, and the technical scheme mainly comprises the steps of adopting a soil improvement technology based on HFA or combining the HFA with other bio-fertilizers for use, and configuring a formula for plants suitable for planting and a vegetation management strategy. The method mainly comprises the following steps: measuring various physical and chemical factors of a soil sample around a tower footing, comparing the physical and chemical factors with an average (normal) value of local soil, and formulating the HFA use amount and concentration according to the results; investigating site conditions such as local weather, terrain, soil properties and the like, native plants and suitable plants, and formulating a plant planting formula and a comprehensive vegetation management scheme capable of iteratively growing in different seasons. According to the method, the vegetation restoration speed and environmental protection are both considered, and vegetation restoration and ecological environment improvement can be rapidly achieved.

The invention relates to the field of wastewater treatment, and discloses an intelligent conditioning and purifying device for bio-fertilizer production wastewater, the intelligent conditioning and purifying device comprises a treatment tank body, the upper end of the treatment tank body is provided with a medicament adding port, the upper end of the inner side of the treatment tank body is provided with a pre-filtering plate, and the lower end of the inner side of the treatment tank body is provided with a top filtering plate; bottom filter plates are vertically and movably arranged below the top filter plates, and gaps between the top filter plates are used for being filled with activated carbon particles; a stirring part is arranged at the upper end of the pre-filtering plate. According to the intelligent conditioning and purifying device for the bio-fertilizer production wastewater, medicament adding treatment, pre-filtering treatment and activated carbon purification treatment are integrated on one device, and meanwhile, a gap between a top filter plate and a bottom filter plate can be increased during activated carbon particle adsorption treatment, and activated carbon particles can be dispersed; the use effect of the activated carbon particles is improved, and the activated carbon particles are blown by water treated at the bottom, so that circular wastewater treatment is realized, and the wastewater treatment effect is improved.

The invention relates to the technical field of bio-fertilizer crushing, and discloses a dynamic stress regulation and control method of a crusher in a bio-fertilizer production process, which comprises the following steps: arranging a non-uniform gradient microgroove array arranged according to a Fibonacci sequence on a working surface of a cutter, filling a beta-glucan-based viscoelastic composite material in the microgrooves, the grain orientation of a tool matrix is regulated and controlled through an electromagnetic field-assisted directional solidification process, and a dynamic stress wave self-interference regulation and control system is constructed. Through the synergistic effect of geometric arrangement of the microgroove array and the nonlinear damping characteristic of the viscous-elastic material, the destructive interference effect of stress waves is spontaneously formed in the crushing process, and space equalization and peak suppression of dynamic stress of the working face of the cutter are achieved; the problems of stress concentration and tool fatigue of a traditional crusher in high-fiber and high-viscosity bio-fertilizer raw material processing are fundamentally solved, the crushing efficiency is remarkably improved, and the service life of equipment is remarkably prolonged.

The invention relates to the technical field of crushing and crushing, and discloses a dynamic stress regulation and control method in a biological fertilizer crushing process, which comprises the following steps: injecting detection pulse airflow into a crushing cavity and collecting an acoustic reverberation signal of the detection pulse airflow; calculating an energy attenuation rate characteristic value from the signal, and dynamically adjusting an analysis frequency band and a regulation and control threshold value of the signal in combination with a material humidity and rotating speed signal obtained in real time; and finally, according to a comparison result of the characteristic value and a dynamic regulation and control threshold value, carrying out closed-loop regulation and control on operation parameters of the crusher. According to the method, a regulation and control mode for directly monitoring and regulating and controlling the energy utilization efficiency in the crushing cavity is constructed, the problem of hidden energy waste caused by excessive interaction or wall surface retention of the materials is avoided, the method can actively adapt to changes of the humidity of the materials and the rotating speed of equipment, and the regulation and control accuracy is guaranteed.

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 discloses a special microbial fertilizer for cotton and a preparation method thereof, and belongs to the technical field of microbial fertilizers. The fertilizer is prepared from the following raw materials in parts by weight: 40-60 parts of a microbial agent, 80-100 parts of a microbial agent carrier, 40-60 parts of a nitrogen fertilizer, 30-50 parts of a phosphate fertilizer, 20-30 parts of a potassium fertilizer and 10-20 parts of a stabilizer, the microbial agent is prepared from nitrogen-fixing paenibacillus mucilaginosus MSSW01, bacillus nissi and streptomyces widermomole, and the microbial agent is prepared from bacillus mucilaginosus MSSW01 and streptomyces widermomole. The stabilizer is prepared from roxburgh rose extract, soybean protein isolate and gamma-aminobutyric acid according to the mass ratio of 2: 1: (0.2-0.5). By screening and optimizing three beneficial microbial strains and combining the synergistic effect of raw material components in a specific ratio, the yield and quality improvement of cotton can be remarkably promoted, and meanwhile, the occurrence rate of common diseases of cotton is effectively reduced.

The biological fertilizer processing and screening device comprises a box body, a scattering mechanism, a plurality of screening mechanisms, a plurality of vibration mechanisms, a driving mechanism and a collecting mechanism, feeding ports are formed in the two sides of the top face of the box body, the scattering mechanism comprises a grinding cone and two grinding blocks, the grinding cone is rotationally connected with the top wall of the box body, and the two grinding blocks are arranged on the top face of the box body. The two grinding blocks are connected to the two side walls of the box body respectively, the multiple screening mechanisms are sequentially arranged below the grinding cone from top to bottom, the vibration mechanism is arranged below the screening mechanisms, the driving mechanism is arranged on the box body and connected with the grinding cone and the vibration mechanism, and the collecting mechanism is arranged on one side of the box body. Therefore, caked fertilizer can be scattered, the caked fertilizer is prevented from blocking the screening net, and therefore the screening efficiency is effectively improved.

The invention relates to the field of agricultural microbial fertilizers, and discloses a composite biological bacterial fertilizer for promoting yield increase of kidney beans, which is prepared from chitosan modified zeolite, salt-tolerant growth-promoting bacteria, potassium-solubilizing and phosphate-solubilizing bacteria, plant signal bacteria and humic acid. The modified zeolite loads potassium ions, adsorbs redundant Na < + >, slowly releases potassium nutrients and adjusts the K < + > / Na < + > ratio of rhizosphere; the flora synergistically acts to secrete betaine, IAA and other substances, salt stress is relieved, and root development is promoted; the humic acid improves the soil structure and improves the water and fertilizer retention capability. Through a freeze-drying immobilization technology, the activity and durability of the flora are enhanced. The granular design of the bacterial fertilizer realizes slow release of nutrients and microorganisms, and improves the fertilizer efficiency and the application convenience. The saline-alkali soil conditioner is suitable for saline-alkali soil agricultural production, and has the effects of improving soil, relieving salt stress and promoting crop yield increase.

The invention relates to the technical field of microorganisms, and particularly provides application of bacillus amyloliquefaciens BA-89 in crop growth promotion and verticillium dahliae antagonism. The strain is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.36498. The strain can secrete multiple extracellular enzymes (including protease, amylase, cellulase and glucanase), has the growth promoting characteristics of producing ammonia, dissolving potassium and the like, and can tolerate high temperature and ultraviolet stress; the compound has a remarkable antagonistic effect on various plant pathogenic bacteria (such as verticillium dahliae, fusarium oxysporum and phytophthora capsici); by inoculating the strain on cotton, the plant growth can be obviously promoted, the plant height, stem diameter, root length, leaf area and biomass are improved, and meanwhile, the disease index of verticillium wilt and the colonization amount of pathogenic bacteria at the root are effectively reduced. The strain disclosed by the invention can be used as a biological fertilizer and a biological pesticide, is used for cotton cultivation and disease prevention and control, and has a wide application prospect.

The invention provides a microalgae fertilizer capable of improving salt and alkali resistance of cucumbers, and the microalgae fertilizer is a composite microalgae bio-fertilizer and comprises scenedesmus obliquus, nitzschia grain and extracellular polymeric substances generated in the culture process of the nitzschia grain. The components of the microalgae compound fertilizer disclosed by the invention are all freshwater algae strains and natural active microalgae cells, so that sodium ions and metal cations cannot be accumulated, the microalgae compound fertilizer does not contain blue-green algae, and cytotoxin which is harmful to the environment cannot be generated; the used algae strains are easier to breed, and the biomass accumulation speed of the algae strains is far higher than that of other algae strains, so that the prepared microalgae biological fertilizer has the advantages of saving time and cost. And the polyunsaturated fatty acid generated by the microalgae fertilizer can enhance the plant resistance through an osmotic regulation system and an antioxidant enzyme ROS system.

The invention discloses bacillus velezensis B127 and application thereof, the bacillus velezensis is preserved in China Center for Type Microbiological Culture Collection, the preservation number is CCTCC NO: M 20252878, the preservation date is December 15, 2025, the classification name is bacillus velezensis B127, and the preservation address is Wuhan University, Hubei Province. The bacillus velezensis B127 has a remarkable inhibition effect on various tobacco fusarium pathogenic bacteria, has good phosphorus and potassium solubilizing capacity, generates hydrolase related to inhibition of pathogenic bacteria and generates siderophore and indoleacetic acid for promoting plant growth, is a biocontrol bacterium with excellent comprehensive performance, and can be widely applied to the field of biological control. The method has good development and application prospects in the fields of agricultural disease control, soil improvement, microbial fertilizers and the like.

The invention relates to the technical field of fertilizers, in particular to a fulvic acid type compound microbial organic fertilizer and a preparation method thereof. The method comprises the following steps: preparing compound microorganism bacterium powder from bacillus subtilis, bacillus megatherium, bacillus licheniformis, pseudomonas fluorescens and bacillus psychrosaccharolyticus; preparing a solid-phase substance from ferric chloride hexahydrate, terephthalic acid and dimethylformamide; generating hydrogel on the surface of the chemical fertilizer in situ, and adding a solid-phase substance to obtain a slow-release chemical fertilizer; and preparing an organic fertilizer, and mixing the organic fertilizer with the compound microbial powder, the slow-release chemical fertilizer and the organic fertilizer to obtain the compound microbial organic fertilizer. According to the compound microbial organic fertilizer provided by the invention, the chemical fertilizer, the organic fertilizer and the microbial fertilizer synergistically promote the growth of plants, and the use of the chemical fertilizer is reduced.

Exemplary embodiments of the present disclosure are directed towards a carrier-based agricultural biofertilizer composition for enhanced disease management in legumes includes, an isolated fluorescens strain CGA FPBPF-034 having the deposit accession number KY495220, and an agriculturally acceptable solid or liquid formulation with an organic or inorganic stabilizer to provide stability and support for the Pseudomonas species, thereby enhancing the disease management efficacy and overall health of the plants.

The invention discloses a phycomycete composite biological fertilizer for an arid loess area as well as a preparation method and application of the phycomycete composite biological fertilizer, and belongs to the technical field of biological fertilizers. The phycomycete composite biological fertilizer is prepared from nitrogen-fixing anabaena and acinetobacter, counted by a single cell, the total viable count of the anabaena azotica is greater than or equal to 1.0 * 10 < 6 > CFU / mL, and the total viable count of the acinetobacter is greater than or equal to 1.0 * 10 < 7 > CFU / mL. Experiments prove that the phycomycete composite biological fertilizer can significantly improve the germination potential and germination rate of crop seeds, promote seedling growth, improve the nutritional quality of crops and reduce the death rate of seedlings, is suitable for various crops such as wheat, Shanghai Qing and peas, and has important application value in agricultural production in arid regions.

The invention discloses a method for preparing a biological bacterial fertilizer from coal and microorganisms, and belongs to the technical field of biological fertilizers. The method comprises the following steps: crushing coal to 80 meshes to obtain coal powder; adding a compound fertilizer accounting for 3% of the total fertilizer mass; a composite additive accounting for 1% of the total mass of the fertilizer is added, and the additive comprises 95% of mushroom sticks, 3% of glucose and 2% of microbial flora (bacillus subtilis, actinomycetes, lactic acid bacteria and the like are mixed according to the proportion of 1: 1: 1: 1); the raw materials are mixed and granulated. The organic matter content of the prepared biological bacterial fertilizer is larger than or equal to 30%, the effective viable count is larger than or equal to 2 * 10 < 7 > CFU / g, the heavy metal content is remarkably lower than the national standard, and cadmium is smaller than or equal to 0.5 mg / kg, lead is smaller than or equal to 30 mg / kg, and chromium is smaller than or equal to 80 mg / The method realizes efficient biotransformation of coal resources, and is suitable for soil improvement and organic agricultural production.

The invention relates to a composite microbial fertilizer with a saline-alkali soil improvement effect and a preparation method thereof, and belongs to the technical field of microbial fertilizer preparation, the fertilizer comprises the following raw materials by mass: 10-30 parts of modified charcoal, 5-8 parts of a microbial agent, 30-50 parts of an inorganic fertilizer, 10-20 parts of a soil improvement agent and 3-5 parts of other auxiliary agents; wherein the modified biochar is obtained by performing segmented heat treatment modification on animal husbandry wastes; the microbial agent is obtained by immobilizing compound microorganisms by using sodium alginate gel reinforced by a mineral filler and micron-sized charcoal powder. The prepared fertilizer has the effects of improving crop quality and crop yield and improving saline-alkali soil.

The invention discloses a controlled-release fertilizer containing microorganisms and fermentation products thereof as well as a preparation process and application of the controlled-release fertilizer, and belongs to the technical field of bio-organic fertilizers. According to the invention, pediococcus acidilactici, klebsiella oxytoca and pseudomonas sp. With high efficient growth-promoting effects are screened, and the active strains and fermentation products thereof act on soil together to fix nitrogen, solubilize phosphorus and solubilize potassium, so that continuous nutrient supply is provided for crops. A fermentation product obtained by mixing the three strains according to the equal proportion is added, and active substances such as organic acid and polysaccharide are efficiently accumulated in fermentation liquor. The composite carrier composed of starch, humic acid and bentonite is added, trace elements are added, the stress resistance inducer is added, all the raw materials act together, the growth of tobacco is promoted, the use amount of chemical fertilizer is reduced, the content of potassium in tobacco leaves is increased, the quality of the tobacco leaves is improved, and the defects that an existing biological fertilizer is not high in specificity and not obvious in use effect are overcome.

The utility model discloses a water body purification device for basin treatment, which comprises a mounting pipe, the top of the mounting pipe is provided with a purification assembly, the purification assembly comprises a support frame rotationally connected with the outer wall of the top of the mounting pipe, the bottom of the outer wall of the circumference of the support frame is fixedly sleeved with a gear ring, and the outer wall of the circumference of the mounting pipe is fixedly provided with a motor. A gear is coaxially fixed to the output end of the motor, the gear is meshed with the gear ring, a guide groove is fixedly formed in the circumferential outer wall of the mounting pipe, a groove in the guide groove is obliquely and downwards formed, a scraping plate is fixedly connected to the outer wall of one side of the guide groove, and the supporting frame is slidably sleeved with a filter screen. The device is used for treating and purifying blue-green algae in a watershed water body, pumping water from a polluted water area, cleaning the surface of the filter screen through continuous rotation of the filter screen in the water body purification assembly, and purifying and scraping off fine blue-green algae to prepare a biological fertilizer, so that the water body is cleaned, and the water quality is improved at the same time.

The invention discloses a method for improving soil fertility of an orchard in a Yellow River old lane area. The orchard is covered with green grass; after the fruits are harvested and before leaves fall, a first fertilization ditch is dug at a crown water drip, and smashed straw, base fertilizer and surface soil are sequentially laid in the first fertilization ditch from bottom to top; meanwhile, digging 3-4 radial second fertilization ditches according to a water drip from a trunk to a crown, sequentially laying dry branches and fallen leaves, wheat straws and livestock and poultry manure in the second fertilization ditches from bottom to top, and putting earthworms into surface straws of the second fertilization ditches; a humic acid-containing water-soluble fertilizer is applied in a drip irrigation manner during topdressing. Therefore, through the synergistic effect of multiple technical measures such as orchard grass covering, organic fertilizer layer application, earthworm density increasing and bio-fertilizer application increasing, a benign soil ecological system is constructed, and therefore the problems that the content of organic matter in orchard soil in the Yellow River old road area is low, and the water and fertilizer retention capacity is weak are effectively solved, the soil fertility is remarkably improved, and the yield of the orchard is increased. And the fruit yield and quality are improved.

The invention discloses a preparation method of a compound microbial fertilizer, and belongs to the technical field of microbial fertilizers, the preparation method comprises the steps of starch gelatinization, strain activation, shake-flask culture, immobilization, fermentation and material mixing; the immobilization comprises the following steps: centrifuging a paenibacillus polymyxa shake-flask culture, and collecting wet thalli; mixing the wet thalli with normal saline, stirring at room temperature, adding the gelatinized starch solution, and continuously stirring to obtain a mixed bacterial solution; stirring a calcium chloride aqueous solution at 30-35 DEG C, dropwise adding the mixed bacteria solution, continuously stirring after dropwise adding, filtering, and taking filter residues to obtain immobilized paenibacillus polymyxa; the compound microbial fertilizer prepared by the invention is high in viable count, and the viable count is slightly influenced by the content of each substance in the corn steep liquor.

The invention relates to the technical field of agricultural microbial fertilizers, and discloses a soil improvement microbial fertilizer and a preparation method thereof, the soil improvement microbial fertilizer is prepared from the following raw materials by weight: 5-8 parts of a composite microbial agent, 30-40 parts of a modified biomass carrier, 25-35 parts of a slow release nutrient matrix, 15-20 parts of a soil conditioning aid, 2-3 parts of a microbial synergist, 1-2 parts of an adhesive, and 3 parts of a coating liquid. According to the invention, dual protection of trehalose loading and xanthan gum-PVA coating is adopted, and the L-proline synergist is matched, so that microorganisms still can survive in a high-temperature and high-salt environment, the inhibition of a severe soil environment on the microorganisms is broken through, and the application range is wider than that of commercially available products.

The microbial fertilizer screening device comprises a fertilizer screening device body, the bottom of the left side of the fertilizer screening device body is fixedly connected with a fixing plate, the left side of the fixing plate is fixedly connected with a collecting box, a conveying pipe is fixedly installed in the collecting box, and a transmission assembly is arranged in the conveying pipe. Fertilizer is placed in the collecting box, then a user starts the motor, the output end of the motor drives the conveying blades to rotate, materials can be conveyed through the feeding port, the materials are conveyed into the conveying pipe, and then the materials are conveyed into the fixing box through the conveying pipe; according to the feeding device, the fertilizer can be conveyed into the fertilizer screening device through the feeding pipe to be conveyed for screening treatment, screening treatment can be rapidly conducted, the fertilizer screening device achieves the efficient feeding and screening effect, an existing manual feeding mode is replaced, and therefore efficient feeding can be achieved, and the feeding efficiency is high.

The invention provides a method for inhibiting soil acidification and application of protozoa to preparation of biological fertilizer.The method comprises the step that the biological fertilizer containing the protozoa is inoculated into soil, and the protozoa comprises at least one of kidney-shaped worms and ochramydae. By the adoption of the technical scheme, the purpose of rapidly inhibiting soil acidification is achieved, the increase of the organic carbon content of soil can be remarkably promoted, meanwhile, different types of protozoa have different degrees of effects on key nutrient elements such as solid storage nitrogen and phosphorus, and a soil nutrient supply structure is optimized. In the aspect of improving the physical structure of the soil, the life activity of the protozoa can effectively promote the generation of soil aggregates, and the healthy soil structure is remodeled by improving the porosity and air permeability of the soil. In addition, the protozoa can also form a complex interaction network with microorganisms such as bacteria and fungi in soil, so that a microbial metabolic pathway is activated, and the microbial activity is remarkably improved.

The invention discloses a bacterium-containing compound fertilizer and a preparation method thereof, and belongs to the technical field of microbial fertilizers. According to the method, nitrogen-fixing bacteria, phosphate solubilizing bacteria and biocontrol bacteria are proportioned to form a compound bacteria solution, and humic acid and L-glutamic acid are added as metabolism synergists, so that the compound bacteria solution uniformly covers the surfaces of fertilizer particles. According to the preparation method of the bacterium-containing compound fertilizer provided by the invention, most of microorganisms in fermentation liquor and beneficial products generated by metabolism of the microorganisms are reserved in a liquid adding manner, and the bacteria-containing compound fertilizer can quickly play a role in soil; the compound bacteria liquid is added in an atomized form, so that the uniformity of bacteria adding is ensured, and the consistency of the effect of a fertilizer product is improved; the method is simple to operate, easy to implement and suitable for various compound fertilizer production processes.

The invention discloses a preparation method of a liquid bio-fertilizer for sequestration of carbon by using microalgae. The preparation method comprises the following steps: S1, preparing components of the liquid bio-fertilizer for sequestration of carbon by using microalgae in parts by mass; s2, pretreating the raw materials; s3, carrying out a mixed reaction; step S4, carrying out homogenization treatment; s5, detecting and adjusting; and step S6, packaging a finished product. Nitrogen, phosphorus, potassium and other basic nutrients in the fertilizer and medium trace elements (calcium, magnesium, iron and zinc) form a basic nutrition system, and the microalgae carbon sequestration polysaccharide, the modified humic acid-microalgae protein compound and the nanoscale phosphorus-potassium chelate further achieve synergistic-slow release-targeted supply of the nutrients. The liquid biological fertilizer is long in fertilizer efficiency lasting period, reduces the fertilization frequency in the growth period of crops, and reduces the fertilization cost and labor intensity of farmers.

The invention discloses a bacillus megaterium-containing microbial fertilizer for soil improvement and a preparation method thereof, and belongs to the technical field of fertilizers, the bacillus megaterium-containing microbial fertilizer for soil improvement is prepared from the following raw materials in parts by weight: 35-50 parts of an immobilized microbial agent, 3-5 parts of a water-retaining agent, 10-15 parts of humic acid and 2-5 parts of trehalose; the immobilized microbial agent is amino MOF (Metal Organic Framework) modified charcoal loaded bacillus megaterium; the microbial fertilizer is prepared from the immobilized microbial agent, the water-retaining agent, humic acid and trehalose, is high in pertinence and outstanding in performance in soil improvement, on one hand, available phosphorus in reclamation soil is activated, needed nutritional ingredients can be provided for plants, on the other hand, soil organic matter can be activated and updated, and the soil fertility is improved. The soil fertility is improved and the plant nutrient requirements are met.

The invention belongs to the technical field of biological fertilizers, and discloses a phenolic acid degrading soil conditioner and application thereof, and the phenolic acid degrading soil conditioner is prepared by using robinia pseudoacacia roots as a raw material. The active ingredient of the soil conditioner is robinia pseudoacacia root exudates, and the preparation method of the soil conditioner comprises the following steps: performing water culture on robinia pseudoacacia plants in a container for 3-5 days to obtain a collection solution containing the robinia pseudoacacia root exudates. Another preparation method of the soil conditioner comprises the following steps: S1, mixing robinia pseudoacacia roots and water in a mass ratio of 1: (1-2), and standing for 3-5 days under an illumination condition to obtain a mixed solution; s2, homogenizing the mixed solution, adding cellulose degrading bacteria, and fermenting for 5-7 days to obtain a root fermentation product; and S3, mixing the root fermentation product with a carrier to prepare the phenolic acid degradation fertilizer. The soil conditioner is simple in preparation method, low in cost and safe and environment-friendly to use, the content of phenolic acid substances in continuous cropping soil of crops can be effectively reduced, harm of the phenolic acid substances to growth and development of konjak is relieved, and konjak planting is facilitated.

The disclosure provides a growth medium and a culturing system for a nitrogen-fixing microorganism. The disclosure also provides methods of enhancing the accumulation of a microbial intracellular storage compound (MISC) in a nitrogen-fixing microorganism. The disclosure further provides biofertilizers comprising a nitrogen-fixing microorganism, as well as methods of improving and / or maintaining crop or plant yield, yield quality, or plant aesthetics, and / or improving soil health using the biofertilizers.