281 results about "Inorganic phosphorus" patented technology

According to the barley HvPHR1 gene and the application thereof in the aspect of increasing the phosphorus content of barley, rice PHR2 homologous protein serves as bait, homologous comparison means is utilized, it is found that two PHR proteins HvPHR1 and HvPHR2 exist in barley, and it is found that the content of inorganic phosphorus in barley leaves can be remarkably increased through overexpression of the HvPHR1 gene in an HvPHR1 overexpression strain with the normal phosphorus concentration being 200 micrometers NH4H2PO4 and an HvPHR1 overexpression strain with the low phosphorus concentration being 10 micrometers NH4H2PO4 hydroponic culture for three weeks and a wild type control (GP). In conclusion, the function of the HvPHR1 gene in barley low phosphorus stress is defined, and a theoretical basis is provided for cultivation of new phosphorus-efficient barley varieties.

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 relates to a salt-tolerant growth-promoting pseudomonas putida PLW1 and application thereof, and belongs to the technical field of microorganisms, the pseudomonas putida PLW1 is preserved in China Center for Type Culture Collection on June 24, 2024, and the preservation number is CCTCC NO: M 20241352; the strain has the functions of degrading organic phosphorus, degrading inorganic phosphorus, producing lipase, producing siderophores and producing indoleacetic acid, and also has good salt-resistant and alkali-resistant characteristics, and the microbial inoculum prepared from PLW1 can promote germination of corn seeds and growth of corn seedlings under salt stress, and has a very wide application prospect.

The invention relates to a method for recycling sludge, in particular to a method for enhancing efficient release and recycling of carbon and phosphorus in sludge in a gradient mode. According to the method for stepwise strengthening efficient release and recycling of carbon and phosphorus in sludge, the release efficiency of phosphorus in different occurrence forms in the sludge is improved in a targeted mode, efficient release of inorganic phosphorus and organic phosphorus is achieved through the synergistic effect of multiple steps, meanwhile, efficient release and recycling of carbon are synergistically improved, and the method has the beneficial effects of improving the utilization rate of carbon and phosphorus in sludge and improving the utilization rate of carbon and phosphorus in sludge. The method is used for improving the overall resource recycling efficiency of carbon and phosphorus in the excess sludge and comprises the following steps: 1, pretreating the sludge; 2, pre-treating the green chelating agent to intensify the release of inorganic phosphorus; 3, recovering inorganic phosphorus; 4, resuspending the sludge; 5, strengthening sludge solubilization and hydrolysis by using a peroxidant; 6, anaerobic recycling; 7, recycling carbon and phosphorus resources; the recovery process is simple and convenient, the loss rate is low, the phosphorus recovery rate can reach 80%-99.5%, the acid production efficiency is improved by 14 times or more, and the method has remarkable advantages.

The invention discloses a charcoal nano lanthanum material capable of synchronously removing organic phosphorus and inorganic phosphorus, and belongs to the field of environmental functional materials. The adsorbent comprises biochar and nano lanthanum loaded on the biochar, wherein the biochar is bamboo biochar; the nano lanthanum is in a La (OH) 3 form, the particle size of the nano lanthanum is 1-250nm, and the loading capacity of the nano lanthanum is 3-20wt%; the pore diameter of the biochar nano lanthanum material is 1-30nm, and the specific surface area is 100-250m < 2 > / g. Compared with a biochar-loaded nano lanthanum composite material in the prior art, the composite material has the inorganic phosphorus adsorption performance and also has the organic phosphorus adsorption effect, and inorganic phosphorus and organic phosphorus can be synchronously removed. According to the charcoal nano lanthanum material, organic phosphorus is adsorbed and removed by regulating and controlling the defect form of lanthanum, especially organic phosphonate can be hydrolyzed and removed, meanwhile, large pore channels of bamboo charcoal are beneficial to diffusion of macromolecular organic phosphorus to action sites of lanthanum, and the adsorption and hydrolysis effects of lanthanum on the organic phosphorus are further enhanced.

The invention discloses a strain of bacillus acidophilus CNBG-PGPR-17 and an application of the bacillus acidophilus CNBG-PGPR-17. The invention further discloses a preparation method of the bacillus acidophilus CNBG-PGPR-17. The strain is preserved in the China General Microbiological Culture Collection Center (CGMCC) on October 28, 2021, the preservation number is CGMCC No.23673, and the strain is classified and named as bacillus acidogenes (Bacillus acidogenes). The strain is high in growth speed, good in stability and easy to amplify and culture; the inorganic phosphorus dissolving capacity is high, and the inorganic phosphorus dissolving amount can reach 277.8 mg / kg 7 days after inoculation; small molecular organic acids such as lactic acid and succinic acid can be secreted, and the pH of the solution is reduced; the contents of soil organic matters, soil total nitrogen, available phosphorus and quick-acting potassium can be increased, and the pH value of the soil is reduced; the growth of blueberry seedlings is promoted, and the blueberry quality is improved.

The invention discloses Burkholderia paradensis and application thereof, and relates to the technical field of microorganisms, the Burkholderia paradensis S3-22L provided by the invention is preserved in China General Microbiological Culture Collection Center (CGMCC), the strain preservation number is GGMCC NO: 31325, the preservation date is July 16, 2024, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, and the preservation number is CGMCC NO: 31325. The 16S rDNA (ribosomal deoxyribonucleic acid) sequence of the Burkholderia paradensis S3-22L is as shown in SEQ ID NO. 1; the strain obtained through screening can dissolve insoluble inorganic phosphorus and mineralize organic phosphorus, can also produce IAA and siderophore and secrete hydrolytic enzymes such as phosphatase, has an inhibition effect on growth and reproduction of ralstonia solanacearum, has an important application effect on prevention and treatment of plant bacterial wilt, and is harmless to the environment and human beings.

The invention discloses a Chinese chestnut composite phosphate-solubilizing bacterial agent and application thereof, and belongs to the technical field of microorganisms. The invention provides a compound phosphate-solubilizing bacterial agent. The compound phosphate-solubilizing bacterial agent is prepared from phosphate-solubilizing bacteria GXLK-W6 and phosphate-solubilizing fungi GXLK-WZ1-1. The phosphorus-solubilizing bacteria GXLK-WZ1-1 are classified and named as Aspergillus niger, the preservation number of the bacteria is CGMCC (China General Microbiological Culture Collection Center) No.41390, the phosphorus-solubilizing bacteria GXLK-W6 are classified as Burkholderia pyrrolothrix, and the preservation number of the bacteria is CGMCC No.31124. The phosphorus-solubilizing bacteria GXLK-WZ1-1, the phosphorus-solubilizing bacteria GXLK-WZ1-1, the phosphorus-solubilizing bacteria GXLK-WZ1-1, the phosphorus-solubilizing bacteria GXLK-WZ1-1 and the phosphorus-solubilizing bacteria GXLK-WZ1-1 and The strains are independently separated from rhizosphere soil of Chinese chestnuts and are screened. And calcium phytate is added into the microbial inoculum to serve as a slow-release phosphorus source. The compound phosphate-solubilizing bacterial agent improves the growth amplification of Chinese chestnut seedlings, promotes the growth of root systems, and promotes the phosphorus absorption of plants. The compound phosphate-solubilizing bacterial agent can improve the dissolution efficiency of inorganic phosphorus in soil and increase the content of soluble available phosphorus, and plays an important role in improving the fertility of the soil.

The invention discloses a phosphorus removal adsorbent based on micro-nano air flotation coupling micro-flocculation and a preparation method thereof, and the preparation method comprises the following steps: dissolving carboxymethyl chitosan, mixing with modified hydroxyapatite and a hydrophobic MOF polymer, and polymerizing under the action of an initiator to obtain composite hydrogel; curing the composite hydrogel in a calcium chloride solution, and performing circulating freezing-unfreezing physical crosslinking to obtain the phosphorus removal adsorbent. The organic phosphorus adsorbent and the inorganic phosphorus adsorbent are combined, the phosphorus adsorption capacity of the phosphorus removal adsorbent is enhanced, the hydrophobic MOF polymer with the adsorption effect on hydrophobic new pollutants is uniformly compounded with the organic phosphorus adsorbent, the phosphorus removal adsorbent also has the adsorption effect on insoluble new pollutants in wastewater, and the phosphorus removal adsorbent has the adsorption effect on insoluble new pollutants in wastewater. Under the synergistic effect of the micro-nano air flotation technology, new pollutants adsorbed by micro-nano air flotation are adsorbed by the phosphorus removal adsorbent, and the problems that the binding force of micro-nano air flotation to the new pollutants is low, and the new pollutants are prone to falling off are solved.

The invention provides bacillus pumilus and application thereof, and belongs to the technical field of microorganisms, the bacillus pumilus YM3-12 provided by the invention is preserved in China General Microbiological Culture Collection Center on October 21, 2024, and the preservation number is CGMCC No. 32281; the strain is high in salt and alkali resistance, has the functions of dissolving organic phosphorus, dissolving inorganic phosphorus, dissolving potassium, degrading protein, degrading cellulose, producing iron carriers and the like, can antagonize Erwinia persicae and fusarium oxysporum, has an obvious growth promoting effect on wheat, radishes and cucumbers in a salt and alkali environment, and is very wide in application prospect.

The invention discloses an iron-magnesium modified sepiolite composite material, a preparation method thereof and application of the iron-magnesium modified sepiolite composite material as a phosphorus removal and algae inhibition functional material, and belongs to the technical field of water pollution remediation. The iron-magnesium modified sepiolite composite material is formed by jointly loading magnesium hydroxide and iron hydroxide on sepiolite, has a good removal and purification effect and high selectivity on phosphorus in a phosphorus-polluted water body under the action of physical and chemical synergistic adsorption of inorganic phosphorus, and can achieve a very good phosphorus removal effect in a relatively short time; meanwhile, the growth of algae is inhibited through the synergistic effect of iron ions and magnesium ions, death of algae in polluted water is accelerated, the effect of purifying water is achieved, and the method has the advantages of being low in treatment cost, environmentally friendly, free of secondary pollution and the like.

The invention discloses a sporosarcina sp. Strain RH34 and an application of the sporosarcina sp. Strain RH34 and the application of the sporosarcina sp. Strain RH34. The sporosarcina strain RH34 is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation address is No.3, yard 1, Beichen West Road, Chaoyang District, Beijing, the preservation date is December 25, 2024, and the preservation number is CGMCC NO.33199. The sporosarcina strain RH34 can be used for preparing the sporosarcina strain RH34. The alfalfa rhizosphere microorganism sporosarcina strain RH34 is separated from alfalfa roots in salinized soil, and has the functions of dissolving organic phosphorus, dissolving inorganic phosphorus, producing biological membranes, producing siderophores, producing IAA and producing ACC deaminase. Seed soaking and germination under salt stress can obviously improve the germination index of alfalfa seeds. The growth condition of alfalfa seedlings can be improved under salt stress.

The present invention provides Paraburkholderia sp. LSOJM18 and use thereof as well as a microbial inoculum, belonging to the technical field of microorganisms. The Paraburkholderia sp. LSOJM18 was deposited to the China Center for Type Culture Collection on Dec. 29, 2022, with the depository number CCTCCNO: M20222102. With a strong phosphate solubilization capacity, the strain provided by the present invention is suitable for activating phosphorus in farmland soil. Using the phosphate-solubilizing bacteria can significantly increase the available phosphorus content of soil and reduce the application of chemical phosphate fertilizers. Acting on a wide range of substrates, the phosphate-solubilizing bacteria strain provided by the present invention can not only secrete phosphatase to hydrolyze organic phosphorus, but also release small molecules such as organic acids, etc., to activate the fixed inorganic phosphorus, and using the phosphate-solubilizing bacteria can significantly improve the phosphorus activation capacity of soil.

The invention relates to paenibacillus polymyxa capable of preventing diseases, resisting stress and promoting growth and application of the paenibacillus polymyxa, and belongs to the technical field of microorganisms, the paenibacillus polymyxa SS44 has the characteristics of degrading protein, degrading fat, degrading cellulose, dissolving potassium, fixing nitrogen, dissolving organic phosphorus, dissolving inorganic phosphorus and producing exopolysaccharide. The strain is capable of antagonizing pathogenic bacteria fusarium oxysporum and fusarium fusiforme which can cause potato fusarium wilt, sweet potato root rot, soybean root rot, alfalfa root rot and the like, can improve sandy soil, can generate a good growth promoting effect on wheat, soybean and corn in saline-alkali soil and sandy barren soil environments, and is very wide in application prospect.

The invention provides a moniliella malayi and a fungicide and application thereof, and relates to the field of microorganisms. The acer rubrum is specifically acer rubrum RA, and the preservation number of the acer rubrum RA is CGMCC (China General Microbiological Culture Collection Center) No.35889. The acer rubrum RA can be used for preparing the acer rubrum. The strain has the capability of decomposing inorganic phosphorus, is wide in phosphorus-dissolving range, can decompose tricalcium phosphate, iron phosphate and aluminum phosphate, and particularly still has very strong capability of decomposing inorganic phosphorus under a low-temperature condition; the strain has the capability of producing siderophore and IAA at low temperature; the strain has an inhibition effect on various pathogenic bacteria causing field crop diseases, and can inhibit diseases such as corn root rot, sorghum leaf spot or wheat root rot; the strain can be colonized in a soil environment of 5-40 DEG C, a microbial inoculum prepared from the strain can promote crop growth, the crop yield is remarkably improved, and high yield can be achieved even if the usage amount of phosphate fertilizer is reduced.

The invention discloses a Burkholderia sp D8 strain and application thereof, the Burkholderia sp D8 strain is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation date is November 15, 2024, and the preservation number is CGMCC NO: 32674. The Burkholderia sp D8 strain has the advantages that the Burkholderia sp D8 strain can be used for preparing the Burkholderia sp D8 strain, and the Burkholderia sp D8 strain can be used for preparing the Burkholderia sp D8 strain; the Burkholderia sp D8 disclosed by the invention is convenient to culture and high in growth speed; the capacity of rapidly and efficiently fixing nitrogen and dissolving inorganic phosphorus and organic phosphorus is achieved; the function of rapidly and efficiently generating protease and siderophore is realized; the salt-tolerant range is wide, and the adaptability is high; the compound can be used as a soil remediation agent, and can effectively improve the contents of organic matters, total nitrogen, alkali-hydrolyzable nitrogen, total phosphorus, available phosphorus and the like in soil.

The invention discloses an inorganic phosphorus dry type detection analysis assembly, the assembly sequentially comprises an upper support layer, a diffusion layer, a first reagent layer, a second reagent layer, a support body and a lower support layer from top to bottom, the two ends of the upper support layer and the lower support layer are respectively connected through buckles, and a sample adding hole is formed in the middle position of the upper support layer; a test hole is formed in the middle of the lower supporting layer; reagents contained in the diffusion layer comprise 5-sulfosalicylic acid, succinic acid, a non-ionic high-molecular chemical substance and triton X-100; reagents contained in the first reagent layer comprise a modified 30% binder, a modified acrylic resin emulsion, white glue, ammonium molybdate, ascorbic acid, a surfactant, soluble cellulose ether, a defoaming agent and an active material; a reagent contained in the second reagent layer comprises D4 hydrogel with the concentration of 0.3 g / L. According to the assembly, the problem of multi-layer coating in the prior art is greatly solved, the permeation effect is improved, and the purposes of normal-temperature storage, coating frequency simplification, process simplification and production cost reduction are achieved.

The invention discloses a Klebsiella Michaeli MX-56 strain and application thereof, and belongs to the technical field of biological agriculture. The Klebsiella michelianensis MX-56 disclosed by the invention is preserved in the Guangdong Microbial Culture Collection Center, the preservation number is GDMCC No: 66361, the preservation time is May 19, 2025, and the preservation address is No. 100, Xianlie Middle Road, Guangzhou City. The invention also discloses an application of the Klebsiella michelianensis MX-56 in preparation of a divaricate saposhnikovia root growth promoting agent and a method for promoting growth of divaricate saposhnikovia root by using the Klebsiella michelianensis MX-56. A root irrigation method is adopted to irrigate MX-56 bacterial liquid. The divaricate saposhnikovia root endophytic bacterium Klebsiella michelianensis MX-56 disclosed by the invention has the growth promoting characteristics of fixing nitrogen, dissolving inorganic phosphorus, and secreting IAA (Indoleacetic Acid) and an iron-producing carrier; the strain can be stably colonized in the soil around the divaricate saposhnikovia roots; a good growth promoting effect is achieved on wind prevention.

The invention relates to a streptomyces sp. Strain EC15 and an application of the streptomyces sp. Strain EC15. The streptomyces strain EC15 is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation address is No.3, yard 1, Beichen West Road, Chaoyang District, Beijing, the preservation date is December 25, 2024, and the preservation number is CGMCC NO.33195. The streptomyces strain EC15 has the advantages that the streptomyces strain EC15 can be used for preparing the streptomyces strain EC15; the strain has the functions of dissolving organic phosphorus, dissolving inorganic phosphorus, producing a biological membrane, producing an iron carrier, producing IAA and producing ACC deaminase. The EC15 bacterial liquid is used for soaking seeds under the stress of 200 mmol / L and 250 mmol / L NaCl, so that the germination potential, the germination rate, the germination index, the radicle length, the germ length and the fresh weight of group seedlings of the alfalfa seeds can be obviously improved. After the EC15 strain is inoculated, under the stress of 200 mmol / L NaCl, the plant height, stem diameter, leaf area and overground part fresh and dry weight of alfalfa plants can be obviously improved.

The invention belongs to the technical field of microalgae culture, and particularly provides a haematococcus pluvialis culture medium and a preparation method thereof.The haematococcus pluvialis culture medium is prepared from 1-3 mg / L of sodium acetate, 0.01-1 mg / L of cobalt nitrate hexahydrate, 0.01-1.6 mg / L of copper sulfate, 0.1-1.2 mg / L of zinc sulfate heptahydrate, 1-3 mg / L of manganese chloride tetrahydrate, 1-10 mg / L of boric acid, 1-30 mg / L of sodium carbonate, 1100-1500 mg / L of sodium nitrate, 0.01-6 mg / L of EDTA, 20-50 mg / L of calcium chloride, 70-100 mg / L of magnesium sulfate heptahydrate, 40-100 mg / L of monopotassium phosphate trihydrate and 0.02 g of inorganic phosphorus; the method comprises the following specific steps: S1, culturing haematococcus pluvialis to a stable phase by a conventional method, inoculating haematococcus pluvialis species into a haematococcus pluvialis culture medium, and culturing; s2, shaking table; s3, culturing for 45 hours; s4, inoculating the seed solution into a haematococcus pluvialis culture medium, and continuously culturing in the shaking table for 6-15 days; the culture medium disclosed by the invention has a good promotion effect on the growth of haematococcus pluvialis and the accumulation of astaxanthin.

The invention relates to a cadmium-tolerant phosphate-solubilizing bacterium and application thereof, the cadmium-tolerant phosphate-solubilizing bacterium comprises a bacillus which is tolerant to Cd and has a growth promoting effect, the bacillus is a bacillus siamensis R27 strain, and the preservation number of the strain is CCTCC NO: M 2023603. The cadmium-tolerant phosphate-solubilizing bacterium can be applied to a Cd solution to adsorb Cd, dissolve inorganic phosphorus, promote vegetable growth and reduce vegetable Cd enrichment. Experimental results show that the cadmium-tolerant phosphate-solubilizing bacteria can dissolve inorganic phosphorus under the condition of Cd stress, promote growth and development of vegetable seedlings and relieve adverse effects of Cd stress on vegetables.

The invention discloses a heavy metal-tolerant phosphate-solubilizing Leclercia adcarboxcarboxy YZ30 strain and application thereof, and belongs to the field of microorganisms, the strain is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC NO: M 20211025. The phosphorus solubilizing amount of the strain to insoluble inorganic phosphorus (calcium phosphate) reaches 705.82 mg / L, the phosphorus solubilizing amount to insoluble organic phosphorus (calcium phytate and calcium and magnesium phytate) reaches 698.89 mg / L and 688.48 mg / L, and the strain has high tolerance to heavy metals such as zinc, cadmium and chromium and can keep high phosphorus solubilizing amount under the maximum tolerance concentration of 1050 mg / kg (zinc), 450 mg / kg (cadmium) and 1248 mg / kg (chromium). In addition, the compound has a certain degradation effect on aniline, and the degradation rate is 32.94%. The strain has relatively strong phosphate solubilizing capacity and heavy metal tolerance, can be used for repairing and reclaiming heavy metal polluted land, and has a very wide application prospect.

The invention discloses application of jointly inoculated rhizosphere phosphate solubilizing bacteria in plant growth promotion and soil nutrient improvement, and belongs to the technical field of microorganisms. The acinetobacter and pantoea combined inoculation provided by the invention can effectively convert insoluble inorganic phosphorus into soluble inorganic phosphorus, thereby promoting the utilization of phosphorus. The ratio of acinetobacter to pantoea combined inoculation is (4-6): (6-4), the soil phosphorus dissolving capacity and the plant growth promoting effect are remarkable, and the compound fertilizer can be applied to improving the soil phosphorus utilization rate and promoting plant growth and has important agricultural and environmental values.

The invention discloses a novel bacillus, the preservation number of which is CGMCC (China General Microbiological Culture Collection Center) No. 1.62901, and the preservation date of which is September 20, 2024. Gene identification shows that the strain belongs to a new microbial species in taxonomy. Researches show that the strain has nitrogen fixation capacity, can grow in a Mengjinna inorganic phosphorus culture medium, exerts phosphorus dissolving capacity, converts insoluble phosphorus elements which are difficult to absorb and utilize by organisms into dissolved phosphate ions which can be efficiently absorbed and utilized by plants, and provides a large number of nutrient substances for crop production; in addition, the strain has good endurance capacity to low-temperature and high-salt environments, and can play an environment restoration function in the low-temperature environments or saline-alkali areas. Therefore, the novel bacillus disclosed by the invention has better application potential and prospect in the aspects of agricultural production (microbial phosphate solubilization) and environmental restoration.

The invention relates to a composite phosphate solubilizing bacterium agent based on biochar carriers and a preparation method and application thereof.The composite phosphate solubilizing bacterium agent can effectively improve the phosphorus absorption and utilization rate of plants in the growth process, and by immobilizing inorganic phosphorus dissolving bacteria on different types of biochar carriers, the yield of the plants is improved more remarkably. The method has the advantages that the method can be used for improving the efficiency of phosphorus in barren soil, reducing dependence on chemical phosphate fertilizer and improving the efficiency of soil phosphorus and phosphorus absorption of crops, especially phosphorus absorption capacity and growth performance of oilseed rape, has a wide agricultural application prospect, and is a method for realizing more environment-friendly and sustainable agricultural production, and the method is particularly used for improving the efficiency of phosphorus in barren soil, reducing dependence on chemical phosphate fertilizer and improving the efficiency of soil phosphorus and phosphorus absorption of crops.

The invention discloses defensive pseudomonas L4BXN with phosphate solubilizing capacity and application thereof, and belongs to the technical field of phosphate solubilizing bacteria. The pseudomonas with the phosphate-solubilizing capacity is a new strain, namely gram-negative bacteria, the optimum growth temperature is 25-30 DEG C, inorganic phosphorus can be decomposed, and the phosphate-solubilizing amount in 7 days is 169 mg.L <-1 >; when the pseudomonas with the phosphate solubilizing capacity is applied to soil, accumulation of biomass of the overground part and the underground part of arabidopsis thaliana can be remarkably promoted, and particularly increase of root length, root area, root volume, branch number, dry weight and fresh weight is promoted; the provided pseudomonas with the phosphate solubilizing capacity has huge application prospects in plant growth promotion, soil improvement and remediation, and has important significance in promotion of agricultural health and sustainability and improvement of the effective utilization rate of phosphorus in soil.

The present invention relates to a strain of Paenibacillus polymyxa with disease prevention, stress resistance and growth promotion and its application, belonging to the field of microbial technology. The Paenibacillus polymyxa SS44 has the characteristics of degrading protein, degrading fat, degrading cellulose, releasing potassium, fixing nitrogen, decomposing organic phosphorus, dissolving inorganic phosphorus and producing extracellular polysaccharide. It can antagonize the pathogenic fungi Fusarium oxysporum and Fusarium fujikuroi that can cause potato wilt, sweet potato root rot, soybean root rot, alfalfa root rot, etc. Moreover, this strain can improve sandy soil and has a good growth promotion effect on wheat, soybean and corn in saline-alkali soil and sandy barren soil environments, with very broad application prospects.

The invention provides a strain of Ralstonia sp. YNK-FB0054 as well as a microbial agent and application thereof, and belongs to the technical field of biology, the strain is Ralstonia wenshanensis, and the preservation number of the strain is CCTCC NO: M 2025293. The strain provided by the invention has the functions of dissolving zinc, fixing nitrogen, decomposing organic phosphorus, dissolving inorganic phosphorus, producing iron carriers and producing indoleacetic acid. The strain and the fungicide taking the strain as the effective active component can promote the germination of plant seeds and the growth of plants, and have high application value.

The invention discloses penicillium oxalicum TWSF1 and application thereof, and belongs to the technical field of agricultural microorganisms. The preservation number of the penicillium oxalicum TWSF1 is CGMCC (China General Microbiological Culture Collection Center) No.41553, and the penicillium oxalicum TWSF1 is preserved in China General Microbiological Culture Collection Center on October 25, 2024. The strain is separated from alpine soil in Branchiomega in the autonomous region of Tibet, can well grow under the condition of 4-35 DEG C, normally grow under the condition that the salt concentration is 5%, can grow under the condition that the salt concentration is 10% and normally grow under the condition that the pH is 10, and has high inorganic phosphorus dissolving capacity; the strain has better environmental adaptability in saline-alkali soil in northern cold regions in China, can effectively repair saline-alkali soil, and has higher application prospect and economic value.

The present invention discloses a Brevibacillus strain, a bacterial agent and their applications and a preparation method of the bacterial agent. The strain is preserved in the China Center for Type Culture Collection (CCTCC), named Brevibacillus sp. BSB-3, and the preservation number is CCTCC NO: M 2025263. The maximum tolerance concentration of the strain to inorganic phosphorus reaches 2000 mg / L. In a liquid medium, after 7 days of culture, the removal rate of soluble phosphorus can reach more than 65.91%, and the accumulation amount of polyphosphate granules in the bacterial cells is significantly higher than that of conventional polyphosphate-accumulating bacteria. In addition, the strain can maintain stable polyphosphorus activity within the ranges of pH 5.0-8.0, temperature 20-35 °C and different carbon source and nitrogen source systems, and is particularly suitable for the treatment of high-phosphorus wastewater and the restoration of black and odorous water bodies.