44 results about "Azotobacter chroococcum" patented technology

The invention discloses a rapid restoration method for degraded grassland based on a microbial agent. The microbial agent is formed by compounding 15-30 parts of a nitrogen-fixing microbial agent, 10-20 parts of a phosphate-solubilizing microbial agent, 8-15 parts of a plant growth-promoting microbial agent, 25-40 parts of a humic acid carrier, 3-8 parts of an embedding agent sodium alginate and 5-12 parts of a nutritional agent molasses. Wherein the nitrogen-fixing bacteria are azotobacter chroococcum and alfalfa rhizobium (the viable count is greater than or equal to 5 * 10 < 9 > CFU / g), the phosphate solubilizing bacteria are bacillus megatherium (the viable count is greater than or equal to 1 * 10 < 10 > CFU / g), and the growth-promoting bacteria are bacillus subtilis and pseudomonas fluorescens (the viable count is greater than or equal to 2 * 10 < 10 > CFU / g). The microbial inoculum is subjected to activation, carrier adsorption, sodium alginate embedding granulation and CaCl2 cross-linking processes to be prepared into slow-release particles of 1-3 mm. 200-250 kg of organic fertilizer is applied to each hectare in a mild area, 300-400 kg of organic fertilizer is applied to each hectare in a moderate and severe area, and leymus chinensis and wheatgrass are sown in a mixed mode. After 90 days of application, the vegetation coverage is improved by 40% or above, the soil organic matter is increased by 25-40%, the microbial diversity index is larger than or equal to 3.5, and the comprehensive remediation cost is reduced by 53%.

The invention relates to a saline-alkaline tolerant microbial seed coating agent and application thereof. The seed coating agent comprises a growth-promoting rhizobacteria inoculant and an auxiliary agent, the volume ratio of the growth-promoting rhizobacteria inoculant to the auxiliary agent is 1: (1-100); in each gram of the seed coating agent, the viable count of the growth-promoting rhizosphere bacteria is (1-100) * 10 < 10 > CFU; the growth-promoting rhizobacteria is selected from one or more of pseudomonas stutzeri A1501, pseudomonas fluorescens ATCC 13525, bacillus amyloliquefaciens FZB42 and azotobacter chroococcum BNCC336703, and the growth-promoting rhizobacteria is selected from one or more of bacillus amyloliquefaciens FZB42 and azotobacter chroococcum BNCC336703; on the basis of the total weight of the auxiliary agent, the auxiliary agent is prepared from the following components in percentage by weight: 1 to 9 percent of film forming agent, 1 to 9 percent of protective agent, 0.0001 to 0.001 percent of regulator, 0.0001 to 0.001 percent of active agent, 0 to 25 percent of filler and 58 to 97 percent of water. The seed coating agent can improve the rhizosphere colonization ability and survival rate of rhizosphere growth-promoting bacteria, can also improve the saline-alkaline tolerance of plant seeds, and effectively promotes plant growth.

The invention relates to the technical field of microbial deodorants, and discloses a microbial compound bacterium deodorant and a preparation method thereof.The microbial compound bacterium deodorant comprises a bacterium powder mixture, the bacterium powder mixture is embedded into a loading material, and the loading material is wrapped with a protective agent; the bacterial powder mixture comprises pediococcus acidilactici, bacillus megaterium, alcaligenes faecalis, bacillus subtilis and azotobacter chroococcum, wherein the mass ratio of the pediococcus acidilactici to the bacillus megaterium to the alcaligenes faecalis to the bacillus subtilis to the azotobacter chroococcum is 1: (1-3): (1-2): (0.5-1): (1-2). According to the microbial compound bacterium deodorant and the preparation method thereof, the prepared microbial compound bacterium deodorant can remarkably remove malodorous gases such as NH3 and H2S in biological excrement, the action time is long, the effect is remarkable, meanwhile, the raw materials of the microbial compound bacterium deodorant are green and safe, and the health problem caused by mistaken eating of livestock is solved.

The invention relates to the technical field of microorganisms, and particularly discloses a nitrogen-fixing and cadmium-reducing microbial agent as well as a preparation method and application thereof. The microbial agent consists of bacillus pseudomycoides, lactococcus lactis, azotobacter chroococcum and biochar, wherein the biochar is obtained by pyrolyzing and carbonizing rice straws. The bacillus pseudomycoides can reduce the bio-availability of soil cadmium; lactococcus lactis can secrete a large number of biological active substances such as exopolysaccharides and enzymes, and the activity of other microorganisms is stimulated and improved; azotobacter chroococcum converts nitrogen in air into ammonium, amino acid and peptide which can be utilized by plants and promotes plant growth, and released metallothionein contains free sulfydryl which is combined with Cd ions, so that a stable sulfide compound is formed. The biological carbon adsorbs and fixes the three bacteria, so that the microorganisms can continuously and effectively play a role and have a mutual synergistic effect, the fixation of Cd in the soil is further enhanced, the availability of nitrogen is improved, and the plant growth is effectively promoted.

The invention relates to the field of microorganisms, and discloses a complex microbial inoculant for preventing and treating clubroot of rape. Comprising the following raw materials in parts by weight: 10 to 12 parts of acid-resistant bacillus, 12 to 15 parts of pseudomonas fluorescens PF-5, 8 to 10 parts of bacillus mucilaginosus, 5 to 7 parts of halophilic bacillus, 8 to 10 parts of bacillus amyloliquefaciens, 12 to 15 parts of trichoderma atroviride ReTv2, 6 to 8 parts of azotobacter chroococcum, 10 to 12 parts of chitosan-gamma-polyglutamic acid microspheres, 12 to 15 parts of diatomite and 8 to 12 parts of humic acid. And 2-4 parts of algal polysaccharides. The living space of plasmodiophora brassicae is preempted by the acid-resistant bacillus; the pseudomonas fluorescens PF-5 directly strikes pathogenic bacteria and stimulates the defense system of the oilseed rape; the bacillus amyloliquefaciens releases a plurality of antibacterial substances; the trichoderma atroviride ReTv2 rapidly destroys the structure of the plasmodiophora brassicae in a manner of hyperparasitism and exoenzyme secretion.

The invention relates to a soil remediation complex microbial inoculant composition and a preparation method thereof, and belongs to the technical field of soil remediation. Comprising the following raw materials: 10-15 parts of a microbial complex inoculant, 40-50 parts of a porous carrier, 20-25 parts of an organic matter and 3-5 parts of a surface protective agent, wherein the porous carrier is obtained by treating diatomite with phytic acid and polylysine. Paenibacillus polymyxa, trichoderma harzianum, bacillus subtilis and azotobacter chroococcum are taken as a microbial compound inoculant, modified diatomite is taken as a porous carrier, and the microbial compound inoculant is mixed with organic matters under the action of a protective agent, so that the soil remediation compound inoculant composition which can effectively improve soil and is excellent in strain activity is obtained.

The invention discloses a salinity regulation and control seedling culture method for hibiscus syriacus, and belongs to the technical field of hibiscus syriacus seedling culture. The method comprises the following steps: (1) seed treatment; (2) preparing a substrate; (3) after sowing, culturing in a greenhouse; (4) transplanting and salinity control: a) when the seedlings grow to have 3-4 true leaves, transplanting the seedlings into a nutrition bag, adding 0.4-0.6 wt% of a microbial liquid into the matrix at the same time, the microbial liquid containing nitrogen-fixing bacteria Azobacter chrocococcus and phosphate-solubilizing bacteria Bacillus licheniformis, and the total number of viable bacteria being greater than or equal to 1 * 10 < 9 > CFU / mL; after transplanting, carrying out drip irrigation with brackish seawater, and spraying a 0.1% monopotassium phosphate solution on leaf surfaces every half a month for three times in total; b) directly carrying out drip irrigation on brackish seawater in the nutrition bag; and (5) outdoor cold-resistant treatment: 30 days before winter, spraying 0.2-0.5 L of 0.2-0.4 wt% potassium sulfate aqueous solution to leaf surfaces for each plant, spraying once every 6-8 days, and spraying 3-5 times in total. Through salinity gradient domestication and use of the microbial agent, the biomass loss rate of the hibiscus syriacus under the salinity of 0.5% is remarkably reduced, and the annual increment of the plant height is improved.

The invention discloses a compound microbial agent as well as a preparation method and application thereof, and belongs to the technical field of agricultural waste rapid composting microbial agents. The prepared composite microbial agent comprises bacillus siamensis, bacillus megatherium, azotobacter chroococcum, bacillus subtilis, bacillus amyloliquefaciens, actinomycetes, saccharomycetes and lactobacillus plantarum, and is used in the composting process of compatibility of pig manure and sorghum straw. Substances such as protein, starch, cellulose and lignin in the raw material pig manure and crop straw can be decomposed, and the degradation speed and effect of compost are improved; the composting quality can be improved, harmful substances are reduced, and the composting is safer and more efficient. The compound microbial agent has excellent performance in actual use, and can provide high-quality organic fertilizer for agricultural production.

The invention relates to the technical field of ecology, and particularly discloses a soil matrix containing mud cakes, a preparation method of the soil matrix and application of the soil matrix in ecological restoration. The soil matrix comprises a solid mixture and water, wherein the solid mixture comprises 0.005%-0.01% of a growth-promoting nitrogen-fixing composite microbial agent, 20%-45% of an organic composite slow-release material, 25%-40% of a mud cake, 28%-42% of deep soil, 0.05%-0.1% of cationic polyacrylamide and 0.2%-0.4% of a vinyl acetate-vinyl versatate copolymer; the growth-promoting and nitrogen-fixing complex microbial inoculant comprises rhizobium, azotobacter chroococcum, bacillus megatherium and azospirillum brasilense; the organic composite slow-release material comprises an organic fertilizer, wood flour and a fertilizer. According to the method, a large number of mud cakes generated in projects such as hydroelectric development are fully utilized and developed into the matrix suitable for plant growth, a platform and a carrier are particularly provided for growth of plants on a slope, land resources are saved, and the method has the advantages of being high in operability, low in cost, good in ecological restoration effect and the like.

The invention relates to the field of microbial agents, in particular to a micro-ecological restoration liquid composite microbial agent suitable for heavy metal contaminated soil and a biological bacterial fertilizer and a preparation method thereof. The micro-ecological restoration liquid complex microbial inoculant suitable for the heavy metal contaminated soil comprises nitrogen-fixing bacteria: azotobacter chroococcum ACCC 11104, phosphate solubilizing bacteria: pseudomonas fluorescens ACCC 03031, potassium solubilizing bacteria: bacillus mucilaginosus CCTCC KB20082790, growth-promoting bacteria: azotobacter braziliensis CCTCC AB 91001, bacillus subtilis CGMCC 17161, synergistic bacteria: trichoderma asperellum CGMCC 3.17461, and restoration bacteria: pseudomonas putida CGMCC 1.4533. The biological bacterial fertilizer for the heavy metal contaminated soil is prepared from the liquid complex microbial inoculant, compared with a conventional biological bacterial fertilizer, the adaptability to the heavy metal contaminated soil is greatly improved, the heavy metal contaminated soil is effectively improved, and the crop yield is remarkably increased.

The invention relates to a preparation method of a salt-reducing bacterial fertilizer and an application of the salt-reducing bacterial fertilizer in agriculture, and the preparation method comprises the following steps: S1, mixing straws, mushroom cultivation wastes, animal dung and a culture medium matrix to obtain a biological waste-based culture medium; s2, respectively culturing bacillus licheniformis, bacillus subtilis, streptomyces microflavus, streptomyces jingyangensis and azotobacter chroococcum by adopting the biological waste material-based culture medium, so as to obtain a composite strain bacterial liquid; s3, mixing water, modified starch and starch, heating and gelatinizing, respectively mixing with the composite strain liquid, and stirring to obtain a starch-coated strain; and S4, mixing the starch-coated strain with nutrient substances to obtain the salt-reducing bacterial fertilizer. According to the invention, the possibility of mutual growth inhibition of different strains is reduced, the stability of the product is enhanced, the product can take effect for a long time, the functions of improving soil and promoting plant growth are played, and a new way is provided for farmland improvement and bacterial fertilizer efficiency improvement.

The invention belongs to the technical field of biological bacterial fertilizers, and particularly relates to a high-salt-tolerance microbial liquid complex microbial inoculant suitable for saline-alkali desertification land and a biological bacterial fertilizer thereof. The microbial liquid complex microbial inoculant is prepared from the following functional strains by using electrochemical low-Hertz water through sequential inoculation and fermentation of three stages: salt-tolerant repair bacteria Nocardia halophila, salt-tolerant functional bacteria Bacillus subtilis and Azospirillum brasilense, nitrogen-fixing functional bacteria Azotobacter chroococcum, phosphorus-solubilizing functional bacteria Pseudomonas fluorescens, and nitrogen-solubilizing functional bacteria Pseudomonas fluorescens. The bacillus mucilaginosus is used as a potassium-dissolving functional bacterium, the trichoderma asperellum is used as a biocontrol growth-promoting bacterium, and the trichoderma harzianum is used as a rhizosphere optimizing bacterium. The biological bacterial fertilizer is prepared from the liquid complex microbial inoculant. Through scientific compatibility of different strains provided by the invention, efficient improvement and crop yield increase of the saline-alkali desertification land are realized, and the strain has important economic and social values.

The present disclosure refers to a microbial consortium containing microorganisms from at least two species selected from the group consisting of Pseudomonas canadensis, Azotobacter chroococcum, Peribacillus frigoritolerans, Priestia megaterium, and Pichia kluyveri. In addition, also disclosed are compositions comprising said consortia, in particular, together with extract of algae, and use of the consortia and compositions thereof for stimulating plant growth.

The invention discloses an oil shale waste residue microwave activation and microorganism coupling soil improvement method which comprises the following steps: crushing and screening oil shale dry distillation residues, and adding ground phosphate rock when necessary; then carrying out two-stage microwave activation treatment to obtain an activated waste residue carrier with high specific surface area and low content of harmful substances; mixing the activated carrier with a compound microbial agent (containing azotobacter chroococcum, silicate bacteria and cellulose degrading bacteria) and straws according to a specific ratio, and carrying out stack retting to prepare a harmless activated waste residue modifier; finally, the application amount is determined according to the soil type, and the fertilizer is applied to soil. According to the invention, harmlessness and high-value recycling of the oil shale waste residues are realized, and the prepared modifier can significantly increase the soil nutrient content, improve the soil structure, adjust the pH value and promote crop growth, is suitable for improvement of various degraded soil, has the advantages of efficient process, low cost, environmental friendliness and the like, and has a relatively high popularization value.

The invention discloses a hydrogel and probiotic compounded microbial inoculum composition and a vegetable planting matrix, a three-dimensional gel carrier is used for embedding a microbial inoculum, the carrier integrates mechanical properties and thallus protection and can maintain flora activity for a long time, bacillus thuringiensis has a low-oxygen survival characteristic after being subjected to Fnr enhanced expression, and the microbial inoculum composition has the advantages that the microbial inoculum composition has a low-oxygen survival characteristic after being subjected to Fnr enhanced expression; the microbial agent composition can survive for a long time in a low-oxygen environment of a carrier embedding environment, and is cooperated with bacillus cereus, azotobacter chroococcum and bacillus megatherium to promote the growth of plants such as vegetables and the like and directionally kill pathogenic microorganisms such as root-knot nematode. Corresponding pests can be killed in a green and targeted manner, the growth of plants is promoted, and the yield is increased.

The invention relates to the technical field of biology, and discloses a recombinant N-acetylglucosamine-1-phosphate uridine transferase (GlmU) mutant and a preparation method thereof. The sequence of the recombinase is formed by connecting an N-acetylglucosamine-1-uridine phosphate transferase (GlmU) mutant (L113V-V172I) from Azotobacter chroococcum, an N-terminal histidine tag (His-tag) and a small ubiquitin-like modified protein tag (SUMO-tag) in series. The invention further discloses a preparation method of the recombinase. Compared with a recombinant wild type N-acetylglucosamine-1-uridine phosphate transferase with the same source, the recombinant N-acetylglucosamine-1-uridine phosphate transferase mutant has higher activity which is 1.5 times of that of the recombinant wild type and higher stability, and the residual activity of the mutant is 66.5% after the mutant is placed at room temperature for 5 days, so that the mutant has a good application prospect in the field of N-acetylglucosamine-1-uridine phosphate transferase. And the soluble expression quantity of the recombinant mutant N-acetylglucosamine-1-uridine phosphate transferase is increased by 5 times.

The invention provides a saline-alkali soil conditioner and a preparation method thereof. The preparation method comprises the following steps: S1, preparing polystyrene microspheres coated with polyethyleneimine; s2, preparing attapulgite of which the surface is grafted with TEMPO oxidized cellulose, and then carbonizing the attapulgite to obtain a carbon-coated attapulgite composite material; s3, preparing composite aerogel; s4, bacillus pasteurii and azotobacter chroococcum are loaded on the composite aerogel, and the saline-alkali soil conditioner is obtained. The double strains are loaded on the composite aerogel, controlled release and slow release of the strains are achieved, in addition, the two microbial agents serve as dominant flora, breeding of harmful pathogens in soil can be inhibited, soil micro-ecological balance can be adjusted, and a healthy rhizosphere environment is created for follow-up crop planting.

The invention provides a special fertilizer used before fruit bearing of vine hanging watermelons as well as a preparation method and application of the special fertilizer, and belongs to the technical field of fertilizers. The special fertilizer comprises the following raw materials in parts by weight: 10-15 parts of macroelements, 0.07-0.09 part of microelements, 3-8 parts of a root growth promoting agent, 20-30 parts of potassium humate, 10-15 parts of a microbial agent and 2-5 parts of auxiliary materials, the root growth promoting agent is prepared from high-molecular polyglutamic acid, amino-oligosaccharide, nicotinamide and brassin; the microbial agent is prepared from bacillus laterosporus, bacillus mucilaginosus, streptomyces jingyangensis and azotobacter chroococcum. The special fertilizer provided by the invention can improve the absorption rate of nutrient substances, improve the root activity of watermelons, promote the growth of the root systems, stems and leaves of the watermelons, contribute to improving the absorption and utilization of nutrient components after fruit bearing in the later period, and lay a solid foundation for the growth of fruits in the later period.

The invention discloses a seaweed polypeptide-rich bacterial fertilizer, and relates to the technical field of fertilizers, the seaweed polypeptide-rich bacterial fertilizer comprises seaweed, water, potassium carbonate, potassium dihydrogen phosphate, polysaccharide, amino acid, azotobacter chroococcum, bacillus thuringiensis and bacillus subtilis, the seaweed polypeptide fertilizer is a natural organic fertilizer, does not contain chemical components and heavy metals, and is harmless to the environment and human health. The seaweed polypeptide fertilizer can reduce the use of chemical fertilizers and pesticides, reduce the pollution of soil and water and protect the ecological environment and human health, and the seaweed polypeptide fertilizer can improve the germination rate of seeds, promote root development, increase the nutrient absorption of crops, activate enzymes related to growth and development, promote the absorption and conversion of chloroplast to light energy and accelerate the carbon and nitrogen metabolism process. The stability of chlorophyll of crops can be maintained, the formation and accumulation of photosynthesis products are improved, the yellowing phenomenon is improved, and the growth is promoted. In addition, the seaweed polypeptide fertilizer can advance the marketing time, improve the stress resistance of crops, and prevent or reduce the occurrence of crop diseases.

The application discloses nitrogen-doped porous carbon material and a preparation method and application thereof. The preparation method of the nitrogen-doped porous carbon material comprises the following steps: 1) after biomass waste is crushed, water is added to perform a hydrothermal reaction to obtain porous carbon particles; 2) azotobacter chroococcum is inoculated into an AzuBay nitrogen-free liquid culture medium, and then the porous carbon particles are added to perform biological nitrogen fixation to obtain the porous carbon particles loaded with microbial nitrogen; and 3) the porous carbon particles loaded with microbial nitrogen are placed in a water vapor-carbon dioxide-nitrogen mixed atmosphere to perform activation, and thus the nitrogen-doped porous carbon material is obtained. The nitrogen-doped porous carbon material is prepared by using the azotobacter chroococcum to take the nitrogen in the air as a nitrogen source, without adding an external nitrogen source, and the process is green and environmentally-friendly, and the preparation cost is low. Finally, the nitrogen-doped porous carbon material mainly containing pyrrole nitrogen as a nitrogen-containing functional group can be prepared, and the type of the nitrogen-containing functional group can be flexibly adjusted.

The invention relates to the field of microbial agents, in particular to a micro-ecological restoration liquid composite microbial agent suitable for saline-alkali soil and a biological bacterial fertilizer of the micro-ecological restoration liquid composite microbial agent. The micro-ecological restoration liquid complex microbial inoculant suitable for the saline-alkali soil is prepared from restoration salt-tolerant bacteria, namely bacillus subtilis, nocardia halospora, nitrogen-fixing bacteria, namely azotobacter chroococcum, phosphate solubilizing bacteria, namely pseudomonas fluorescens, potassium solubilizing bacteria, namely bacillus mucilaginosus, growth-promoting bacteria, namely azospirillum brasilense, biocontrol bacteria, namely bacillus megatherium and synergistic bacteria, wherein the restoration salt-tolerant bacteria are bacillus subtilis, nocardia halospora, the nitrogen-fixing bacteria are azotobacter chroococcum, the phosphate solubilizing bacteria are pseudomonas fluorescens, the potassium solubilizing bacteria are bacillus mucilaginosus, the growth-promoting bacteria are azospirillum brasilense, the biocontrol bacteria are bacillus megatherium, and the synergistic bacteria are prepared from bacillus subtilis The biological bacterial fertilizer for the saline-alkali soil is prepared from the liquid complex microbial inoculant, compared with a conventional biological bacterial fertilizer, the adaptability to the saline-alkali soil is greatly improved, the saline-alkali soil is effectively improved, and the crop yield is remarkably increased.

The invention discloses Azospirillum brasilense capable of producing protease, decomposing potassium, degrading cellulose, promoting growth and relieving NaCl stress of plants and application of the Azospirillum brasilense. The invention provides nitrogen-fixing spirillum or a progeny thereof, the nitrogen-fixing spirillum is Dongying nitrogen-fixing spirillum, the strain number of the nitrogen-fixing spirillum is RS252, and the registration number of the nitrogen-fixing spirillum in the China General Microbiological Culture Collection Center is CGMCC (China General Microbiological Culture Collection Center) No. 31494. The strain is a new strain of azospirillum, and has the capabilities of producing protease, decomposing potassium and degrading cellulose. Pot experiments show that under the stress of NaCl, compared with an uninoculated negative control group, after the strain is inoculated, the root length and underground fresh weight of rice can be improved, and the strain can be used as a microbial organic fertilizer for improving soil fertility, relieving the NaCl stress of crops and improving the NaCl stress adaptability of the crops.

The present application discloses a strain of azotobacter chroococcum with the abilities of producing protease, decomposing potassium and cellulose, promoting growth and relieving plant NaCl stress, and application thereof. Azospirillum dongyingense The present application provides the azotobacter chroococcum or its offspring, the azotobacter chroococcum is azotobacter chroococcum (Azotobacter chroococcum) of Dongying, the strain number is RS252, and the registration number of the Center of General Microbiological Culture Collection of China Microbial Culture Collection Committee is CGMCC No. 31494. The strain is a new strain of azotobacter chroococcum genus, has the abilities of producing protease, decomposing potassium and cellulose. Potted test shows that compared with the negative control group without inoculation, the strain can improve the root length and underground fresh weight of rice under NaCl stress, and the strain can be used as microbial organic fertilizer to improve soil fertility, relieve crop NaCl stress and improve the adaptability of crops to NaCl stress.

The present invention belongs to the technical field of microbial fertilizers, and specifically relates to a microbial fertilizer for infertile paddy fields, its application, and a method for improving infertile paddy fields. The microbial fertilizer provided by the present invention, by mass fraction, comprises 83 to 90 parts of mushroom residues and 10 to 17 parts of biological bacterial agents; the biological bacterial agents comprise at least two of Azotobacter chroococcum, Bacillus subtilis, Bacillus mucilaginosus, and Bacillus amyloliquefaciens; the viable bacteria count in the microbial fertilizer is 2×109 cfu / g to 6×109 cfu / g. The present invention expands the types of microbial strains. Taking nitrogen-fixing bacteria as one of the components and matching with other strains, it can specifically improve the soil of representative medium- and low-yield paddy fields such as infertile medium- and low-yield paddy fields, promote the activation of soil nutrients in infertile paddy fields, reduce pests and diseases, and increase the rice yield.

The invention discloses a saline-alkali soil improvement microbial agent and a production process thereof, and belongs to the technical field of soil remediation. Comprising 10 to 20 parts of a microbial composite inoculant, 10 to 20 parts of silicon-nitrogen co-doped protonated chitosan, 12 to 18 parts of mixed straw powder, 12 to 18 parts of sodium borohydride-sodium citrate co-modified charcoal, 8 to 15 parts of manioc waste, 5 to 10 parts of calcium superphosphate and 6 to 8 parts of urea. The microbial complex microbial inoculant is prepared from bacillus subtilis, bacillus megatherium, lactobacillus plantarum, azotobacter chroococcum, rhodospirillum, pseudomonas, brown sugar and sterile water; wherein the mass ratio of the bacillus subtilis to the bacillus megaterium to the lactobacillus plantarum to the azotobacter chroococcum to the rhodospirillum to the pseudomonas is 4: 3: 2: 2: 2: 2: 1, and the mass ratio of the bacteria to the brown sugar to the sterile water is 2: 1: 7. The problems that an existing saline-alkali soil improvement scheme is high in cost, long in period and unstable in effect are solved. The method has the advantages of efficient improvement and good stability.

The invention provides a lettuce growth-promoting microbial agent and a lettuce planting method based on agriculture and light complementation, and belongs to the technical field of vegetable planting. The lettuce growth-promoting microbial agent comprises bacillus subtilis, paenibacillus polymyxa, rhodopseudomonas palustris, Aureobasidium tenuissimum and Azotobacter chroococcum in a mass ratio of (1-3): (2-4): (2-4): (4-6): (1-3). The method comprises the following steps: soaking lettuce seeds in a seed soaking agent, airing, sowing on a seedling culture substrate, covering with soil, and culturing to obtain seedlings; ploughing the land under the photovoltaic panel, and applying a vegetable residue organic fertilizer; transplanting when 4-6 true leaves grow on the seedlings, and applying the lettuce growth-promoting microbial agent while transplanting; a nutrient solution is sprayed 7-10 days after transplanting and 15-20 days after transplanting. According to the lettuce planting method based on agriculture and light complementation, the photosynthesis and growth and development of lettuces under the photovoltaic panel are greatly improved, and the yield and quality of the lettuces are improved.

The invention discloses a plant growth substance, which is prepared from the following components in percentage by weight: 30 to 40 percent of compound microbial agent, 15 to 20 percent of dung beetle extract, 30 to 40 percent of yeast liquid and 20 to 30 percent of animal claw shell amino acid aqueous solution, the compound microbial agent is prepared from the following components in percentage by weight: 20 to 35 percent of bacillus mucilaginosus, 20 to 35 percent of bacillus megatherium, 20 to 30 percent of photosynthetic bacteria, 15 to 25 percent of azotobacter chroococcum and 15 to 25 percent of trichoderma harzianum. According to the present invention, the plant resistance can be effectively improved, and the plant diseases such as powdery mildew, damping off, root rot, gummy stem blight, sclerotiniose, verticillium wilt, bacterial wilt, fruit rot, downy mildew, virus disease, root-knot nematode and the like caused by fungi, bacteria and viruses can be inhibited; the use of chemical fertilizers and pesticides can be obviously reduced, the ecological environment is improved, the crop yield is increased, and the planting cost is reduced; the problems of pesticide residue, pesticide harm and high heavy metal residue are thoroughly solved; original quality and taste of crops are restored, and agricultural product quality is improved.

The invention relates to the technical field of agricultural microbial preparations, in particular to a complex microbial inoculant for promoting crops to resist heavy metal cadmium as well as a preparation method and application of the complex microbial inoculant. Effective viable bacteria in the complex microbial inoculant comprise bacillus licheniformis with the cell count content of 24%-41%, bacillus subtilis with the cell count content of 30%-46%, pseudomonas fluorescens with the cell count content of 16%-32% and azotobacter chroococcum with the cell count content of 14%-25%. When the microbial agent is applied to root systems of plants growing in the heavy metal cadmium land, the cadmium resistance of the plants can be improved, and the plant height, the ground diameter, the fresh weight, the dry weight, the root length and the root number of the plants are remarkably increased; in addition, the complex microbial inoculant can effectively improve the growth of crops in the cadmium field and solve the problem of cadmium field repair in the field by improving the activity of antioxidant enzyme, increasing the chlorophyll content, helping plants maintain high photosynthetic activity and relieving the damage of cadmium stress to a plant photosynthesis system.

The invention discloses a preparation method of a healthy and environment-friendly household lawn planting fertilizer, and belongs to the technical field of agricultural fertilizers. The invention relates to a preparation method of a healthy and environment-friendly household lawn planting fertilizer. The preparation method comprises the following steps: 1) efficiently converting kitchen garbage and garden waste by adopting a complex microbial inoculant (azotobacter chroococcum, thermophilic cellulose decomposition bacteria and candida tropicalis) in a specific ratio; 2) designing an intelligent response type core-shell coating structure, and realizing accurate controlled release of nutrients through the synergistic effect of a PHBV copolymer core layer, a modified starch interface layer and a temperature-sensitive nano composite shell layer; and 3) a safe combination of a bitter agent and a botanical insecticide is innovatively used. The product has the characteristics of quick start and long-acting supply, can obviously improve the soil environment, is completely biodegradable and pollution-free, and solves the problems of single function and serious pollution of the traditional fertilizer. The preparation process ensures stable product performance by optimizing fermentation parameters and an electrospray coating technology, and is particularly suitable for ecological maintenance requirements of family lawns.

The invention relates to the field of microbial agents, in particular to a universal soil micro-ecological restoration liquid composite microbial agent suitable for industrial production and a biological nitrogen fertilizer thereof. Comprising six functional strains: nitrogen-fixing bacteria, phosphate-solubilizing bacteria, potassium-solubilizing bacteria, growth-promoting bacteria, biocontrol bacteria and synergistic bacteria, the nitrogen-fixing bacteria are azotobacter chroococcum, the phosphate-solubilizing bacteria are pseudomonas fluorescens, the potassium-solubilizing bacteria are bacillus mucilaginosus, the growth-promoting bacteria are azotobacter braziliensis, the biocontrol bacteria are bacillus subtilis, and the synergistic bacteria are trichoderma asperellum; the liquid complex microbial inoculant is prepared from the six functional strains through liquid fermentation by using electrochemical low-Hertz water. The biological nitrogen fertilizer is prepared by using the liquid complex microbial inoculant, exerts the functions of nitrogen fixation, phosphate solubilization, potassium solubilization, growth promotion, biocontrol and synergy, also can reduce the dependence on chemical fertilizers, not only can improve the soil quality, but also achieves the synergy goals of crop yield increase, quality improvement and soil health.