28results about How to "High nutrient content" patented technology

The invention discloses a ternary sand-fixing water-retaining seepage-proofing fertility-increasing vegetation restoration and reconstruction method, and relates to the technical field of operation methods of sand ecological restoration, and the method comprises the following steps: S1, laying a layer of seepage-proofing material on the surface layer of a target planting area to reduce water seepage and enhance soil water-retaining capacity; s2, mixing a water-retaining agent with local sandy soil to form a water storage layer, and paving the water storage layer on the surface of the impermeable material to ensure that the plant root system can obtain water for a long time; s3, applying an organic fertility intensifier to the water storage layer to improve the organic matter content and nutrient supply capacity of the soil; s4, appropriate plants are selected for planting, after planting, the vegetation growth condition and the soil humidity are checked regularly, a water-retaining agent and an organic fertility increasing agent are supplemented in time according to needs, and it is ensured that the vegetation can grow healthily. The planting method provided by the invention has a remarkable yield increasing effect, the survival rate of plants can be effectively improved, and the effect of fixing sand for a long time is achieved.

The invention discloses an organic potassium fertilizer and a preparation method thereof. The preparation method comprises the following steps: pretreating a novel natural organic matter, a mineral potassium source and an enhanced biological active agent; uniformly mixing the pretreated novel natural organic matter with a mineral potassium source, and adding the plant-derived stimulant in the mixing process to obtain a mixed material containing the plant-derived stimulant; inoculating an enhanced bioactive agent into the mixed material containing the plant-derived stimulant, and performing composting fermentation in an aerobic environment to obtain a fermented mixed material; screening and processing the fermented mixed material to obtain organic potash fertilizer particles; and adding an environmental response type auxiliary agent to carry out coating treatment on the organic potassium fertilizer particles to form microcapsules, and drying and crushing the microcapsules to obtain the organic potassium fertilizer which is easily dissolved in water to form a liquid fertilizer. The prepared organic potash fertilizer not only can improve the nutrient content and the organic matter proportion of the fertilizer, but also can enhance the physical stability and the chemical adaptability of the fertilizer.

The present invention discloses a strain of Pseudocanthomonas NJAU‑273, which is classified and named as Pseudocanthomonas Pseudoxanthomonas sp., deposited in the General Microbiology Center of China Microorganism Culture Collection Committee, with a deposit date of March 25, 2024 and a deposit number of CGMCC No.30114. The present invention discloses its application in straw composting. The present invention also discloses the microbial agent prepared by the present invention and the application of the microbial agent in straw composting. Compared with the treatment without inoculation of microbial agent, the treatment with inoculation of NJAU‑273 microbial agent effectively promotes the increase of the temperature of the compost pile, accelerates the composting process, improves the germination index of the compost product, and increases the total nutrients of the compost product.

The invention discloses a morchella esculenta-ganoderma lucidum cultivation method for improving continuous cropping soil of morchella esculenta, and relates to the technical field of morchella esculenta cultivation, and the method comprises the following steps: in the same land parcel, planting a first round of medium-mushroom morchella esculenta No.1 in November of the first year, and planting ganoderma lucidum after planting a second round of medium-mushroom morchella esculenta No.1 in November of the second year; after harvesting of the medium mushroom morchella No.1 every time, the soil is turned over and aired. By means of the method, the morchella planting frequency can be increased, the morchella yield can be increased, fungus communities in soil can be adjusted by planting ganoderma lucidum twice, vacant land parcels are not needed, the land utilization rate is increased, flora distribution can be adjusted, and ganoderma lucidum harvest can be obtained.

The application discloses a kind of artificial humic acid slow-release fertilizer based on lignocellulose fermentation residue and a preparation method thereof.The method uses lignocellulose fermentation residue as raw material, through alkali catalytic depolymerization and amino reaction, lignin is converted into artificial humic acid, and combines hydroxyapatite to load nutrients such as nitrogen, phosphorus and potassium, to construct a three-dimensional slow-release network structure with carboxymethyl cellulose-calcium chloride ion crosslinking system, and artificial humic acid slow-release fertilizer is prepared.The slow-release fertilizer of the application has excellent slow-release performance, and the nutrient elements can be released stably, which improves the utilization rate of fertilizer, reduces nutrient loss, has soil improvement and slow-release fertilizer efficiency, and is suitable for facility agriculture, ecological restoration and sustainable agricultural development.

The present invention belongs to the technical field of mango planting, and discloses a precise water and fertilizer supply device and method for mango root crown area, the device comprises a driving assembly, a fertilizing assembly is installed on the driving assembly, a steering assembly is installed on the driving assembly, the fertilizing assembly is connected to the steering assembly, a pressure assembly is installed at the bottom of the steering assembly, the driving assembly is used to drive the steering assembly to move, the fertilizing assembly is used to transport water and fertilizer into the steering assembly, the steering assembly is used to control the moving angle of the pressure assembly, the pressure assembly is used to pressurize the soil, the driving assembly comprises a mounting frame, the top of the mounting frame is fixedly connected with a motor, the output end of the motor passes through the mounting frame and extends to the bottom thereof, and the outer wall of the mounting frame is fixedly connected with a support block. The present invention can achieve precise fertilization, ensure that fertilizer is directly applied to the root crown area of ​​the mango tree, increase the nutrient content of the rhizosphere soil, reduce nutrient loss, and promote the healthy growth of the mango tree.

The utility model relates to the technical field of ancient tree protection, and discloses an ancient tree protection supporting device which comprises two supporting blocks, two sliding grooves and two semicircular rings, the two supporting blocks are arranged front and back respectively, the two sliding grooves are formed in the centers of the upper end faces of the two supporting blocks respectively, and the two semicircular rings are arranged in the sliding grooves respectively. The front ends and the rear ends of the two semicircular rings are arranged on the upper end faces of two supporting blocks correspondingly, sliding blocks are arranged at the front ends and the rear ends of the lower end faces of the two semicircular rings correspondingly, supporting legs are arranged at the positions, close to the two sides, of the centers of the lower end faces of the two supporting blocks correspondingly, and electric push rods are arranged at the centers of the interiors of the four supporting legs correspondingly. And telescopic rods are arranged in the centers of the interiors of the four electric push rods correspondingly, and circulating devices are arranged in the centers of the interiors of the four telescopic rods correspondingly. The nutrient solution is conveyed into the soil through the circulation device, the nutrient content and the soil structure of the soil around the ancient tree are improved, the nutrient solution can be directly absorbed and utilized by the ancient tree, and growth and development of the ancient tree are promoted.

The invention discloses a preparation method for producing a biological bacterial fertilizer from lincomycin waste mushroom dregs, and relates to the technical field of fertilizer preparation, and the preparation method comprises the following steps: pretreatment of lincomycin waste mushroom dregs, microbial inoculation, strain fermentation, trace element addition and liquid fertilizer finished product detection. The method has the advantages that the waste lincomycin residues are alternately soaked with diluted hydrochloric acid and a sodium hydroxide solution, various impurities on the surfaces and in the waste lincomycin residues can be fully dissolved, alkaline harmful substances and pollutants combined with metal ions can be decomposed under the acidic condition, and the waste lincomycin residues can be recycled under the alkaline condition. The micro-bubbles can decompose acidic residual antibiotics and organic substances, in the continuous aeration process, on one hand, the micro-bubbles can scour the surfaces of mushroom dregs to enable impurities to fall off and be dissolved more easily, on the other hand, the content of dissolved oxygen in liquid is increased, favorable conditions are created for follow-up microorganism survival, and meanwhile oxidative decomposition of harmful substances is facilitated.

The application provides a cold-adapted straw degrading and nitrogen-fixing composite microbial agent, a preparation method and application thereof, and belongs to the technical field of agricultural microorganisms.The cold-adapted straw degrading and nitrogen-fixing composite microbial agent comprises Acinetobacter guillouiae JIA101, Paenibacillus polymyxa JIA102, Raoultella sp.JIA201, Cellulosimicrobium cellulans JIA202 and Raoultella sp.JIA203.The composite microbial agent has high enzyme activity, straw degrading capacity and nitrogen-fixing capacity, and is suitable for a low-temperature environment.Pot experiment results show that under the condition of 10 DEG C, the microbial agent can significantly promote straw degradation, the straw degradation rate in soil reaches 44.99%, and is increased by 88.49% compared with a control group;and the treatment can effectively improve the soil nutrient and organic matter content.The application provides technical support for straw returning to field and soil fertilization under a low-temperature environment.

The utility model relates to the technical field of seeding machines, in particular to a clay land seeding machine which comprises a main body, and the side face of the main body is fixedly connected with a land piling and ridging assembly and a ditching and fertilizer spreading assembly. Fertilizer in the first fertilizer box and the second fertilizer box is directly discharged from the space between the depth limiting wheels and scattered on the ground, and then the seeding disc furrow opener is used for furrowing, so that the fertilizer can be drawn into a furrow, the fertilizer can be kept in the furrow, the soil absorption efficiency is improved, and the soil quality is improved. According to the invention, crops can fully absorb sufficient fertilizer, the expected growth effect is achieved, the range of the ridges can be controlled by using the stacking disc and the crushing fluted disc, the crops can grow under the specified ridges, the crops can grow orderly, the orderly ridges become loose soil piles, the soil is loose, the permeability is good, and the quality of the crops is improved. The air is sufficient, the heat preservation performance is improved, the soil heat is increased, crop growth is promoted, and the fertilizer and water retention capacity of soil is improved.

This invention discloses an endophytic bacterium for Epimedium with multiple disease-resistant and growth-promoting functions, its combination, and its application, belonging to the field of biocontrol technology. The endophytic bacterium for Epimedium described in this invention is *Bacillus belye* B-Y-2. The combination of endophytic bacteria for Epimedium in this invention includes *Bacillus belye* B-Y-2, *Bacillus halophilus* A-G-7, and *Bacillus subtilis* D-1. The endophytic bacteria and combination of this invention exhibit good inhibitory activity against the main pathogens causing Epimedium diseases, and possess nitrogen-fixing, phosphorus-solubilizing, and potassium-solubilizing effects. Icariin and IAA can be detected in the fermentation broth, which can increase soil nutrient content, promote plant growth, and improve Epimedium quality. When combined, they synergistically enhance their effects. As an effective component of foliar fertilizer for controlling Epimedium diseases, they have a long-lasting effect, good control efficacy, and are environmentally safe. When applied to the soil as a microbial fertilizer, they can increase the content of available nitrogen, phosphorus, and potassium in the soil, improve soil fertility, promote plant growth, and reduce the use of chemical fertilizers.

The invention discloses a microbial fertilizer for soil remediation containing bacillus subtilis, belongs to the technical field of fertilizers, and comprises the following raw materials in parts by weight: 30-40 parts of modified biochar, 20-30 parts of bacillus subtilis fermentation liquid, 2-5 parts of trehalose, 20-25 parts of bentonite, 5-10 parts of oxygenator, 3-5 parts of gypsum, and 10 parts of water; the bacillus subtilis provided by the invention is a dominant strain screened out by streaking separation through high-throughput sequencing in a Nanling lotus pond reclamation test field, can quickly repair reclaimed soil, can improve crop resistance and increase crop yield, and the microbial fertilizer prepared by using the bacillus subtilis as a living organism raw material can effectively improve the nutrient content of the reclaimed soil, has a significant effect on improving the organic matter and effective nutrient content of the reclaimed soil, can also increase the crop biomass, and reduce the heavy metal content in the crop.

The present application provides a kind of to realize rice field methane emission reduction bacterial agent and its application, the strain in the bacterial agent includes cellulose degradation bacteria, lignin degradation bacteria, nitrogen-fixing bacteria and phosphorus and potassium solubilizing bacteria;The active bacterial count ratio of cellulose degradation bacteria, lignin degradation bacteria, nitrogen-fixing bacteria and phosphorus and potassium solubilizing bacteria is (25-50):(15-35):(10-30):(5-25).The bacterial agent provided by the present application can inhibit the activity of methanogenic archaea, promote the growth of methanotrophs, reduce the emission of rice field methane from the source, significantly improve the soil nutrient content, and realize agricultural ecological regulation.

The invention discloses a guniting mineral source bio-organic fertilizer and a preparation method thereof, and belongs to the technical field of bio-organic fertilizers. The fertilizer is prepared from the following raw materials in parts by weight: 70 to 80 parts of composite humic acid slurry, 0.1 to 0.5 part of trace elements, 10 to 20 parts of modified starch and 0.1 to 0.5 part of microbial liquid. According to the method, the bacillus subtilis capable of efficiently converting lignite to produce humic acid is selected, meanwhile, the pseudomonas delbrueckii and the bacillus thuringiensis are compounded and jointly fermented, the content of free humic acid is effectively increased, finally, a guniting process is adopted, the moisture of the organic fertilizer can be reduced, the particle strength is improved, and the method is suitable for a seed-fertilizer simultaneous sowing technology, and the production efficiency is improved. The organic fertilizer is rich in nutrient elements, humic acid is good in water solubility, and the organic fertilizer has more advantages when being used as a crop nutrient source.

The invention relates to the field of grease, and discloses a grease processing trapping liquid treatment method, a method for increasing the nutrient content in grease and grease, the treatment method comprises the following steps: carrying out gradient cooling on a grease deodorization trapping liquid at 55-65 DEG C to gradually reduce the temperature to-5-5 DEG C, and keeping the temperature stage for 27-33 hours, according to the method, the grease deodorization trapping liquid is subjected to gradient cooling and is kept at a relatively low temperature for enough time, so that a high-melting-point substance becomes viscous, and impurities in the grease deodorization trapping liquid can be wrapped by the high-melting-point substance in the process, so that the grease deodorization trapping liquid can be fully filtered, and the grease deodorization trapping liquid is prevented from being polluted by the impurities in the grease deodorization trapping liquid. According to the present invention, the oil content is reduced, such that the impurities are reduced, the viscosity of the oil is reduced by heating, the melting point substance and the wrapped impurities in the oil can be conveniently filtered, and the treated substance obtained after filtration contains rich VE and sterol, and can be used for refining crude oil and / or degummed oil so as to achieve the purpose of oil nutrient retention rate increasing.

The invention belongs to the technical field of soil improvement, and relates to a planting method combining protective tillage with organic fertilizer application. The invention provides a planting method combining protective tillage with organic fertilizer application, which comprises the following steps: performing deep scarification before sowing, then applying modified starch, a microbial organic compound fertilizer and a nitrogen-phosphorus-potassium ternary compound fertilizer, and finally sowing crops, the modified starch is phosphorylated distarch phosphate or acetylated distarch phosphate; the effective viable count in the microbial organic compound fertilizer is more than or equal to 5 billion / g, and the organic matter content is more than or equal to 60%. According to the method, the influence of different cultivation modes and different auxiliary additives on the soil organic matter content and nutrient circulation is explored. In this way, the organic matter content of the soil can be protected and increased, and the fertility and stress resistance of the soil are enhanced.

This invention belongs to the field of agricultural microbiology technology, and discloses a strain of Sphingomonas, a microbial agent, its preparation method and application, specifically disclosing a strain of Sphingomonas (… Sphingomonas Microbial agent (sp.) R7 was deposited on March 31, 2025, at the China Center for Type Culture Collection (CCTCC), Wuhan University, Wuhan, China, with accession number CCTCC NO: M 2025634. The invention discloses a microbial agent containing this bacterium, its preparation method, and its application in improving soil and / or promoting rice growth, as well as in reducing cadmium content in the aboveground parts of rice. This microbial agent not only increases the content of nutrients such as nitrogen and phosphorus in the soil, thus improving soil quality, but also significantly increases the dry matter weight of rice roots, stems, leaves, and brown rice, promoting rice plant growth; it also concentrates cadmium in the rice roots, reducing the cadmium content in the aboveground parts of rice.

The invention relates to the technical field of agriculture, in particular to a facility vegetable field repairing agent and a preparation method and application thereof. The facility vegetable field repairing agent comprises boric sludge doped kitchen waste biomass charcoal, amino-functionalized diatom mineral powder, a growth-promoting and disease-inhibiting compound and a photosensitive active soil conditioning compound. According to the invention, an environment-friendly concept of treating pollution with waste is adopted, agricultural waste resources such as boric sludge, kitchen garbage, silkworm excrement, kitchen compost and the like are fully utilized, and a scientific formula and a modification process are adopted; the powdery facility vegetable field repairing agent with multiple functions is compounded by doping the boric sludge with the kitchen waste biomass charcoal, the amino-functionalized diatom mineral powder, the growth-promoting and disease-inhibiting compound and the photosensitive active soil-adjusting compound. The test shows that the compound has the positive effects of relieving soil acidification, improving soil fertility, passivating heavy metal cadmium, promoting crop growth, inhibiting growth of fusarium oxysporum, reducing cucumber morbidity and the like, and is beneficial to solving the problems of degradation of facility vegetable fields and cadmium pollution.

The invention relates to a plant source liquid fertilizer and a preparation method thereof, and belongs to the technical field of liquid fertilizer preparation, and the specific preparation method comprises the following steps: S1, collecting a composite plant raw material, and pretreating the raw material to obtain a fermentation substrate; s2, selecting a composite strain, performing fermentation treatment on the fermentation substrate, then filtering, and collecting a fermentation product; and S3, mixing the fermentation product with a system stabilizer. The invention provides a plant source liquid fertilizer and a preparation method thereof. According to the technical scheme, azadirachta indica leaves and agricultural wastes are used as fermentation substrates, and reutilization of plant resources and recycling of the agricultural wastes are realized through a multi-bacteria compound fermentation technology. By introducing the synergistic mechanism of the organic acid and the system stabilizer, the stability and nutrient content of the liquid fertilizer are effectively improved, and the problems of environmental pollution, low fermentation efficiency, poor stability and the like in the preparation and application processes of the existing liquid fertilizer are solved.

The invention discloses a device for preparing a water-soluble fertilizer by fermenting dead fish, injured fish and residual fish. The device comprises a crushing and homogenizing unit, a water-soluble fertilizer preparation unit and a water-soluble fertilizer preparation unit, wherein the crushing and homogenizing unit is used for crushing and homogenizing the whole dead fish, injured fish and residual fish into fish cream; the pretreatment tank is used for performing heating sterilization and enzymolysis treatment on the fish cream; the anaerobic fermentation tank is used for receiving the fish cream after enzymolysis and performing closed fermentation; the solid-liquid separation unit is used for separating the fermented materials into solid residues and liquid fertilizer primary liquid; the liquid refining unit is used for filtering and concentrating the primary liquid of the liquid fertilizer to obtain a final water-soluble fertilizer product. According to the device and the method, harmless treatment and resource utilization of dead fish, injured fish and residual fish are realized through coupling pretreatment of'high-temperature sterilization + directional enzymolysis' in combination with closed anaerobic fermentation and a multi-stage refining process, a water-soluble fertilizer product with good water solubility and high nutrient content is produced, and the device and the method are suitable for water-fertilizer integrated facilities for modern drip irrigation, spray irrigation and the like.

The invention discloses a compound fertilizer for improving slope cropland acidified soil by using biological crust and a preparation method thereof.The preparation method comprises the steps that straw chippings, smashed citrus imperfect fruits, cow dung, rape seed cakes and saccharomycetes powder are stirred and mixed and then fermented and composted, and an organic fertilizer A is prepared; mixing plant ash and a mixed bacteria solution to prepare an alkaline organic fertilizer; the preparation method comprises the following steps: crushing an alkaline organic fertilizer, fully and uniformly mixing the crushed alkaline organic fertilizer with urea, phosphogypsum, potassium sulfate and calcium superphosphate, granulating, sequentially spraying the green alga suspension and sodium alginate on the surface of the prepared organic-inorganic compound fertilizer, and drying at low temperature to obtain the compound fertilizer. The compound fertilizer disclosed by the invention can quickly form biological crust and reduce soil leaching after being spread into soil, organic fertilizers, inorganic fertilizers and microbial agents are organically combined and prepared into spherical fertilizers, mechanical fertilization is facilitated, the nutrient requirements of crops in the whole growth period are met while acidified soil is improved, and the yield of the crops is increased. Not only is the availability of the acidified soil improved, but also the sustainable development of farmland is promoted.

The invention relates to the technical field of saline-alkali dry farmland improvement. The invention provides a modifier for saline-alkali dry farmland as well as application and a use method of the modifier. The modifier comprises the following components in parts by weight: 25-35 parts of corn straws, 27-31 parts of corncobs, 17-23 parts of peanut shells, 13-17 parts of soybean meal, 4-6 parts of humic acid, 0.4-0.6 part of polyglutamic acid and 0.4-0.6 part of wood vinegar powder. The multifunctional bio-based modifier provided by the invention is suitable for improvement and utilization of moderately severe saline-alkaline dry farmland, effectively reduces the saline-alkaline degree, increases the content of organic matters and nutrients, and promotes the growth of plants. After the fertilizer is applied for 2-3 years, the normal cultivation level is reached, long-term cultivation and utilization of moderate and severe saline-alkali soil can be realized by combining conventional soil improvement and fertilization measures, the cultivated area is supplemented, the per unit yield of crops is improved, and the national grain safety is guaranteed. The multifunctional bio-based macromolecular modifier has great application prospect and popularization potential in improvement and utilization of moderate and severe saline-alkali soil.

The invention provides an earthworm protein extract as well as an extraction method and application thereof. The earthworm protein extract can be applied to agricultural production. The extraction method comprises the following steps: preparing cleaned earthworms into earthworm homogenate; adding water into the earthworm homogenate, and carrying out solid-liquid separation to obtain an extracting solution containing earthworm protein; then protease is added for enzymolysis; and performing purification treatment on the extracting solution after enzymolysis to obtain the earthworm protein extract. The extraction method of the earthworm protein extract is simple, extraction parameters are controllable, and the extracted earthworm protein is high in extraction rate and purity. The earthworm protein extract is rich in eighteen amino acids, various nucleotides, FA proteins and other components, can provide essential raw materials for plant metabolism, is beneficial to plant tissues to coordinate cell division and differentiation activities, can effectively improve the yield, quality and resistance of crops, and has the effects of improving the soil structure, improving the soil fertility and the like.

The invention discloses a compound microbial functional fertilizer as well as a preparation method and application thereof, and belongs to the technical field of microbial fertilizers. The functional fertilizer is prepared by taking six functional strains including clostridium butyricum (CCTCC NO: M 2022151), bacillus coagulans (CGMCC NO.32216), kluyveromyces marxianus (CGMCC NO.24455) and the like as cores, matching with auxiliary materials including soy protein concentrate and the like and performing a two-stage compound fermentation process. Experiments show that the functional fertilizer can significantly increase the content of medium trace elements such as quick-acting phosphorus, potassium, calcium, magnesium, iron and zinc in soil, and effectively repair the degraded soil structure; when the fertilizer is used for wheat planting, the acre yield, the wheat protein content and the wet gluten content of wheat can be remarkably improved, and the crop quality is greatly improved. The soil remediation agent has the dual effects of soil remediation and crop yield increase and quality improvement, and a new technical scheme is provided for sustainable development of green agriculture.

The invention relates to the technical field of cultivated land quality improvement, and discloses a non-grain cultivated land soil nutrient library recarburization and capacity expansion method which comprises the following steps: firstly, deep ploughing is performed, then an organic-inorganic mixed fertilizer and a special complex microbial inoculant are applied, and the organic-inorganic mixed fertilizer comprises completely decomposed cow dung, woody peat, an inorganic nitrogen fertilizer, potassium fulvic acid and an inorganic phosphate fertilizer; the special composite microbial inoculant comprises arbuscular mycorrhizal fungi and bacillus mucilaginosus; the organic-inorganic mixed fertilizer and the special complex microbial inoculant are uniformly distributed in soil of a plough layer, microorganisms in the special complex microbial inoculant can decompose organic fertilizer in the organic-inorganic mixed fertilizer, fix nutrients, supplement a soil nutrient library and increase the content of organic carbon in the soil, mycorrhiza of arbuscular mycorrhizal fungi can further fix the content of organic carbon in the soil, and the content of organic carbon in the soil is increased. The bacillus mucilaginosus can assist the survival of arbuscular mycorrhizal fungi and promote the growth of mycorrhiza of the arbuscular mycorrhizal fungi; by means of the method, the soil quality of the non-grain cultivated land is rapidly improved, and the grain yield is remarkably increased.

The invention discloses a light carbon silicon humic acid compound fertilizer and a preparation method thereof, and belongs to the technical field of biological fertilizers. The light carbon silicon humic acid compound fertilizer is prepared from the following components in parts by weight: 15-20 parts of a light carbon silicon material, 10-20 parts of modified humic acid, 18-20 parts of urea, 12-15 parts of potassium chloride, 8-12 parts of monoammonium phosphate, 2-3 parts of a photosynthesis enhancer and 1-2 parts of a nanocrystallization aid, the optical carbon-silicon material is prepared by preparing a carbon carrier from a carbon raw material through a hydrothermal reaction and then loading a silicon element and photosynthesis promoting bacteria, the modified humic acid is prepared from a humic acid raw material through three-step treatment, fermentation, acid precipitation and hydrogen peroxide modification. The nanocrystallization auxiliary agent is an equivalent mixture of lauryl sodium sulfate and nano silicon dioxide. The light carbon silicon humic acid compound fertilizer provided by the invention promotes the growth and development of crops and improves the soil structure.

The present invention relates to the technical field of saline-alkali land improvement, and specifically to a saline-alkali soil conditioner for improving the fertility of coastal saline-alkali farmland soil and improving its structure, as well as its preparation method and application. The present invention adopts calcium aluminum potassium silicon-based bagasse hydrothermal charcoal, calcium-based bentonite furfural residue biochar and activated lignite mixed as mineral-based organic improvers, silicate cement, cationic hydroxyethyl cellulose and calcium lignin sulfonate mixed as aggregate binders, urea formaldehyde and ammonium sulfate mixed as nitrogen-increasing agents to prepare saline-alkali soil conditioners. The saline-alkali soil conditioner of the present invention can increase the content of organic carbon, nutrients and biomass in the soil, promote the bonding of dispersed soil particles, thereby accelerating the formation of aggregates and maintaining stability. The saline-alkali soil conditioner and improvement method of the present invention are economical, environmentally friendly, and easy to apply. They can effectively and long-term improve the physical and chemical properties of coastal saline-alkali farmland soil, increase crop yields, and are conducive to improving carbon sinks in coastal saline-alkali areas.

The invention discloses a high-efficiency nano green bioengineering water-soluble fertilizer, which relates to the field of fertilizers, and the active component of the high-efficiency nano green bioengineering water-soluble fertilizer is mainly composed of microbial metabolites and is obtained in a biological extraction mode; the water-soluble fertilizer comprises the following components in percentage by mass: 56.5% of organic matters and not less than 55.6% of total nutrients; the pH value of the water-soluble fertilizer is 8.7; the total nutrient content of the efficient nano green bioengineering water-soluble fertilizer is up to 55.6%, the organic matter content is up to 56.5%, meanwhile, the efficient nano green bioengineering water-soluble fertilizer is rich in multiple major elements, medium elements, trace elements and high-content amino acid, comprehensive and balanced nutrition can be provided for crops, and healthy growth of the crops is promoted.