297results about "Nitrogenous fertilisers" patented technology

The invention discloses a preparation process of high-efficiency absorption fish protein peptide and application of the high-efficiency absorption fish protein peptide in fertilizer, and belongs to the technical field of marine organisms. The aquatic product protein is directly used as a fermentation raw material, and the content of amino acid in the fish protein biological peptide is remarkably increased by utilizing the synergistic fermentation effect of microorganisms and assisted by biological enzymolysis, so that the absorptivity of the fish protein peptide is increased; the prepared fish protein peptide is used in the fertilizer to prepare the fish protein peptide functional fertilizer, the nutritional value and the utilization rate of the fertilizer are remarkably improved, and the fish protein peptide functional fertilizer has the remarkable effects of growth promotion, disease resistance, stress resistance and the like. According to the method, a conventional fish protein peptide preparation method of firstly preparing fermentation enzyme liquid and then performing biological enzymolysis is abandoned, the efficient absorption fish protein peptide is prepared by adopting a process of directly fermenting aquatic protein, a fermentation process and an enzymolysis process are integrated, and compared with a conventional process, the method has the advantages of simple production process, low production cost and the like; the method has significant effects and meanings for promoting green preparation of the fish protein peptide and efficient application of the fish protein peptide in fertilizers.

The invention relates to the technical field of fertilizers, in particular to an environment-friendly water-soluble fertilizer containing a seaweed extract and polyglutamic acid. The water-soluble fertilizer is prepared by preparing seaweed oligosaccharide and double-grafted poly-L-gamma-sodium glutamate and compounding and complexing the seaweed oligosaccharide and the double-grafted poly-L-gamma-sodium glutamate, has the characteristics of low salting-out, high stability, no precipitation, good slow release performance and the like, and can continuously release nutrients and keep a solution clear and transparent under a low-salt condition; and because the polyglutamic acid and seaweed extract compound drip irrigation agent has the chelation and water retention characteristics of the polyglutamic acid and the natural growth promoting effect of the seaweed extract, the crop rhizosphere nutrient absorption efficiency and stress resistance are remarkably improved, the compound drip irrigation agent is suitable for drip irrigation and water and fertilizer integrated application of greenhouse vegetables, fruit trees and field crops, and the comprehensive effects of high efficiency, low salt load and environment friendliness are achieved.

The invention relates to the technical field of soil improvement, and discloses a sandy grainfield soil organic matter quality improvement and increment method which comprises the following steps: comprehensively detecting soil, preparing an improvement material according to a comprehensive detection result, and deeply ploughing and returning the soil to the field; planting multifunctional intercrops, and crushing, turning and pressing the multifunctional intercrops into a soil layer to perform in-situ green manure returning from the full-bloom stage to the initial pod stage of the multifunctional intercrops; a polymeric organic-inorganic composite conditioner is applied; applying water, fertilizer and bacteria integrated regulation and control based on micro-spray irrigation; and high-stubble no-tillage straw covering and annual monitoring are implemented. According to the method, the organic matter, porosity and the like of the soil can be remarkably improved, and the ecological environment of the soil is remarkably improved.

According to the high-temperature-resistant nitrogen-fixing bacteria microcapsule fertilizer and the preparation method thereof, aiming at the problems of thallus inactivation and nutrient loss in a high-temperature environment, a sodium alginate-chitosan double-layer embedding technology is combined with magnetic nanoparticle modification, and a stable double-layer structure is formed by optimizing the ratio of an embedding material, so that the high-temperature-resistant nitrogen-fixing bacteria microcapsule fertilizer is prepared. The survival rate and activity of the nitrogen-fixing bacteria at high temperature are remarkably improved, and meanwhile, the functions of intelligent nutrient release and magnetic recovery are achieved. The fertilizer is prepared from composite microcapsules, amino acid, humic acid and other raw materials according to a specific ratio through magnetic field orientation treatment, multi-stage mixing, atomization granulation and magnetic field screening processes, the particle size is controlled to be 0.5-3.35 mm, and the shelf life is prolonged to 12 months. The method has the technical effects that trehalose-glycerol / sorbitol synergistically forms a glassy protective film to maintain the stability of thalli, gamma-aminobutyric acid activates nitrogenase gene expression, magnetic nanoparticles construct a photosynthetic symbiotic system to optimize rhizosphere oxygen supply, and silanized FeO nanoparticles fix heavy metal ions through electrostatic adsorption, so that the heavy metal ions in the thalli are effectively adsorbed, and the heavy metal ions in the thalli are effectively adsorbed. And the humic acid buffers the pH fluctuation of the soil, so that the nitrogen fixation efficiency is finally improved by 30-50%, and the crop yield is increased by 15-25%.

The invention discloses high-purity oxamide with concentrated particle size and spherical morphology, a preparation method of the high-purity oxamide and application of the high-purity oxamide in preparation of a slow-release fertilizer, and belongs to the technical field of oxamide synthesis and application. The method comprises the following steps: mixing an ammonia-alcohol solution and an alcohol ester solution, conveying the mixed solution into a series tubular reactor for reaction, and then conveying the mixed solution into a parallel tubular reactor for reaction after pressure stabilization and flow equalization to obtain a reaction solution containing oxamide; performing flash evaporation on the reaction liquid to obtain flash evaporation liquid and flash evaporation gas, and performing solid-liquid separation on the flash evaporation liquid to obtain solid oxamide and filtrate; and drying the solid oxamide to obtain the oxamide. The method realizes high conversion rate and high purity, and the product has ultrafine particle size distribution. The purity of the prepared oxamide is greater than or equal to 99%, the D50 particle size is concentrated to 50 + / -15 microns, the spherical morphology is uniform, the release is stable, and the oxamide has a very good effect in preparation of long-acting slow-release fertilizers and combustion inhibitors and research on the nitrogen utilization rate.

The invention discloses a hypha mineral composite bionic sand stabilization unit body and a preparation method thereof, and relates to the technical field of sand stabilization, the interior of the unit body is provided with a bionic three-dimensional porous skeleton structure, the unit body comprises a porous core layer, a porous core layer and a porous core layer, the porous core layer takes cleaning sand grains with the particle size of 0.1-2 mm as a sand-based carrier; uniformly mixing and curing with organic nutrient substances, mineral precursors and strain spores; the composite reinforcing layer is formed by interweaving and compounding a mycelium network formed by germination and growth of strain spores, mineral crystals generated by in-situ mineralization induced by metabolic activity of hyphae and a plant fiber reinforcing material which is externally added and embedded into the pores in the pores of the porous core layer; according to the hypha mineral compounded bionic sand stabilization unit body and the preparation method thereof, mold pressing or 3D printing prefabrication is adopted, the structure is controllable, and standardized production and transportation are facilitated; and through a controllable fermentation and gradient dehumidification mineralization culture process, hyphae and minerals are ensured to be uniformly and fully compounded in pores, and the product quality is stable.

The invention relates to the technical field of fertilizers, in particular to a seaweed-containing synergistic monoammonium phosphate fertilizer as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a seaweed extract with beta-cyclodextrin, performing microencapsulation, and performing spray drying to obtain an embedded material; mixing with monoammonium phosphate and polyglutamic acid, and granulating; spraying salt-resistant compound bacteria liquid on the surfaces of the particles; and finally, coating the particles with a chitosan-sodium alginate composite film. According to the prepared synergistic monoammonium phosphate fertilizer finished product, the phosphorus utilization rate of monoammonium phosphate saline-alkali soil can be increased, the phosphorus fixation rate can be greatly reduced, the retention rate of active ingredients of the seaweed extract is greatly increased compared with that in the prior art, the rhizosphere survival rate of salt-tolerant flora is greatly increased, and the salt-tolerant flora, the seaweed extract and monoammonium phosphate cooperate to promote crop yield increase.

The invention relates to the technical field of compound fertilizers, and discloses a silicon-containing compound fertilizer special for lodging resistance and disease prevention of rice and a preparation method thereof.The silicon-containing compound fertilizer is prepared from 30-35 parts of organic compound matrix, 20-26 parts of straw liquefied matter, 5-10 parts of water-soluble silicon fertilizer, 4-8 parts of humic acid, 1-1.5 parts of microbial agent, 0.5-0.8 part of polyglutamic acid, 5-10 parts of compound coating liquid and 0.2-0.5 part of microelement chelate, the composted duck manure, the peat and the coco coir are used as main raw materials, the air permeability of the peat is combined with nutrients of the duck manure, soil hardening can be improved, soil fertility can be improved, the water-soluble silicon fertilizer is matched with the organic compound matrix, absorption of silicon elements by rice is promoted, a silicified cell layer is formed on the stem epidermis, then the cell wall thickness is increased, and the rice yield is increased. The breaking strength of the stalks is improved.

The invention belongs to the technical field of fertilizers, and particularly discloses coated 5-aminolevulinic acid as well as a preparation method and application thereof. The preparation method of the coated 5-aminolevulinic acid comprises the following steps: (1) melting: melting urea phosphate to obtain a coating agent; and (2) mixing: uniformly mixing the coating agent and 5-aminolevulinic acid powder in a high-tower granulator, carrying out spray granulation, and cooling and curing to obtain the coated 5-aminolevulinic acid. The preparation method disclosed by the invention is simple in process, and the prepared coated 5-aminolevulinic acid is good in stability and can promote the growth of chilies.

The invention provides a method for preparing a compound amino acid chelated slow-release fertilizer from waste spirulina mud, and belongs to the technical field of agricultural fertilizers. According to the method disclosed by the invention, the waste spirulina mud from which phycocyanin and polysaccharide are extracted is fully utilized, the waste spirulina mud is decomposed into free amino acid, and the free amino acid is compounded with marine polysaccharide to prepare a green compound amino acid chelated fertilizer product with a slow-release effect; secondly, the nutrient release period of the fertilizer can be regulated and controlled by controlling the proportion and concentration of the marine polysaccharide, and the fertilizer has excellent water and fertilizer retention capacity.

The invention discloses a polypeptide fertilizer beneficial to cold resistance of crops and a preparation method thereof, and belongs to the technical field of agricultural fertilizers, the fertilizer is prepared by taking livestock and poultry blood (preferably pig blood) as a raw material, preparing high iron protein peptide through a compound protease hydrolysis process, and matching with a trace element compound, humic acid and a carrier. The preparation process comprises the steps of enzymolysis preparation of the ferritin peptide, fertilizer mixing, granulation, drying and the like. The polypeptide fertilizer disclosed by the invention takes the high-iron protein peptide as a core, the contained small-molecular amino acid polypeptide can enhance the antioxidant enzyme activity of crops at low temperature and reduce malonaldehyde accumulation, the porphyrin iron can promote chlorophyll synthesis and energy metabolism, and the high-iron protein peptide and the porphyrin iron cooperate to remarkably improve the cold resistance of the crops. Meanwhile, by cooperating with trace elements and humic acid, the cold resistance is enhanced, nutrient absorption of crops is promoted, the yield and quality are improved, multiple effects of resisting cold, improving quality, increasing yield and the like are achieved, the raw materials are wide in source, the cost is low, the preparation process is simple, and large-scale production and application are facilitated.

The invention discloses a quaternary synergistic water-soluble fertilizer synergist as well as a preparation method and application thereof, and realizes deep coupling of chemical growth promotion, biological activation and physical slow release, multi-component synergistic interaction and efficient nutrient utilization based on a four-dimensional synergistic mechanism of chitosan oligosaccharide-oligopeptide-bioactive alkali-functional microbial agent. Wherein the modified chitosan oligosaccharide enhances the chelating ability through molecular structure optimization, and forms a nano-scale composite system with the oligopeptide, so that the absorption and transfer efficiency of nutrients on leaf surfaces and root systems is remarkably improved. The functional microbial agent and chitosan oligosaccharide cooperate to activate soil enzyme activity and promote release of insoluble phosphorus and potassium, so that the utilization rate of nitrogen, phosphorus and potassium is remarkably increased compared with that of a traditional fertilizer, and nutrient loss is effectively reduced. The quaternary synergistic water-soluble fertilizer synergist provided by the invention is high in compatibility, can be directly compounded with a commercially available water-soluble fertilizer for use, is suitable for diversified planting scenes of facility agriculture, field crops and commercial crops, and has large-scale popularization potential.

The invention provides a probiotic composition for improving immunity and a preparation method thereof, and belongs to the technical field of probiotics. The preparation method comprises the following steps: fermenting selenium-enriched nostoc sphaeroides through selenium-enriched saccharomycetes to extract selenium-enriched nostoc sphaeroides polysaccharide and selenium-enriched nostoc sphaeroides protein peptide, mixing with traditional Chinese medicine polysaccharide obtained by extracting astragalus membranaceus, rhodiola rosea, codonopsis pilosula and pseudo-ginseng, and reacting with ferric salt to prepare a polysaccharide-Fe / selenium compound; solid residues are mixed and fermented, and active protein peptide is prepared from the solid residues and selenium-rich nostoc sphaeroides protein peptide; the probiotic composition capable of improving immunity is prepared by extracting a polysaccharide-Fe / selenium compound and a polysaccharide-Fe / selenium compound through an organic solvent, extracting a permeate through an organic solvent to obtain an active component, collecting a bacterial liquid, mixing and embedding the bacterial liquid in the polysaccharide-Fe / selenium compound and sodium alginate, and uniformly mixing the bacterial liquid with the active protein peptide, the active component, taurine and ginsenoside Rg3, so that the probiotic composition capable of improving immunity can play good anti-inflammatory, anti-oxidation, immunoregulation, anti-tumor, anti-virus and other roles, and has a good application prospect. Wide application prospects are realized.

The invention relates to a method for preparing small-particle-size red nano-selenium particles and application of the small-particle-size red nano-selenium particles, and belongs to the technical field of selenium compounds. The nano-selenium particles contain nano-selenium and a lipoic acid oligomer. The preparation method comprises the following steps: respectively preparing nano-selenium and a lipoic acid oligomer, and uniformly mixing the nano-selenium and the lipoic acid oligomer to obtain the nano-selenium particles. The nano-selenium particles have good stability; the content of total protein and fat in highland barley grains to which the nano-selenium particles are applied is remarkably increased through detection, the nano-selenium particles become an effective means for selenium enrichment of crops, the nano-selenium particles are well applied to selenium-enriched planting of highland barley, and the application of the nano-selenium particles to the highland barley grains is developed by combining development of new selenium-enriched crop varieties and research of a new selenium fertilizer application technology. And a powerful promotion effect is achieved on the development of selenium-enriched ecological agriculture.

The invention belongs to the technical field of soil improvement, and relates to a farmland heavy metal contaminated soil conditioner and a preparation method thereof.The preparation method comprises the steps that 1, acid activated sepiolite powder is prepared; step 2, preparing thermally activated apatite powder; step 3, preparing sodium humate loaded biochar; step 4, mixing the acid-activated sepiolite powder, the heat-activated apatite powder, the sodium humate-loaded biochar, the decomposed organic fertilizer and the amino acid chelate fertilizer in batches; step 5, granulation: coating the granules with a coating agent; the technical bottlenecks of low activity, short time efficiency, narrow range and high risk of the existing modifier are thoroughly broken through through the four-layer innovative design of material hyperactivity, slow release carrier, competitive barrier and process collaboration.

The invention discloses a fertilizer containing herbaceous plant components and a preparation method thereof, and particularly relates to the technical field of agricultural waste, the formula is composed of a composite traditional Chinese medicine extract, a core-shell structure carrier, a functional probiotic agent and an auxiliary agent, and the preparation method comprises the steps of S1, graded extraction of traditional Chinese medicines, S2, carrier loading and microcapsule preparation, and S3, probiotic integration and granulation. Through scientific compatibility of the compound traditional Chinese medicine extracts, design of the core-shell structure carrier, directional addition of the functional probiotics and an optimized preparation process, the prepared fertilizer can synergistically improve the growth index and quality of crops, remarkably enhance the disease and pest resistance, effectively improve the physicochemical properties and micro-ecological environment of soil and improve the yield of the crops. The usage amount of chemical pesticides and fertilizers is reduced, integration of nutrition supply, disease prevention and control and soil improvement is achieved, and the requirements of green agriculture development are met.

The invention discloses a mollusk attractant as well as a preparation method and application thereof in snail prevention and control, and belongs to the technical field of biopesticides, temperature-responsive microcrystalline cellulose particles are used as a main component of a coating premix, and an attractant base material containing active components, essence, amino acid, molasses and flour is coated, so that the mollusk attractant is obtained. The attractant has temperature responsiveness and can meet the field temperature of snails in spring and autumn high-incidence periods in agricultural production, the essence and the molasses are main components with an inducing function, snails can be better trapped, and the snails are not prone to loss due to the influence of the complex environment in a farmland; the temperature-responsive microcrystalline cellulose particles disclosed by the invention have amphipathy, the hydrophilicity can realize rapid spreading of the attractant in a farmland, and the hydrophobicity can realize that the attractant is not easily washed by water flow and rainwater in the farmland, so that the service life of the attractant is prolonged.

The invention relates to the technical field of rice planting methods, in particular to a nutrient solution for culturing Guizhou indica rice variety 'Guizhou Red No.1' as well as application and a culture method of the nutrient solution. According to the invention, a nutrient solution specially aiming at 'Guihong No.1' is researched and determined, the nutrient solution is added with micromolecular substances and Br with the final concentration of 0.1-0.6 [mu] M, GABA with the final concentration of 0.3-0.9 mM, melatonin with the final concentration of 0.5-5 [mu] M and salicylic acid with the final concentration of 10-20 [mu] M, and the nutrient solution specially aiming at 'Guihong No.1' can effectively improve the plant height, the biomass (fresh weight), the nitrogen content, the chlorophyll content and the dry weight of a single plant of 'Guihong No.1'. The nutrient solution provided by the invention can solve the technical problem of lack of an effective culture method in the prior art, and can better promote large-scale, intensive and factory planting management and large-area popularization and application of indica rice varieties in Guizhou by utilizing synergistic interaction and advantage complementation among different treatment modes.

The invention relates to a special microbial agent fertilizer for konjak, and aims to break through the industrial bottlenecks of high incidence of soft rot, damage caused by waterlogging stress and glucomannan synthesis obstacles in konjak cultivation. According to the core technical scheme, the activity of soft rot fungus pectinase is inhibited in a targeted mode through clostridium butyricum, and efficient polymerization of gulcomannan molecular chains is driven in cooperation with a hydroxyproline precursor provided by fish meal; a sulfonic acid group of biochemical potassium fulvate is used for blocking waterlogging free radical poison, and a brown sugar-trehalose carbon source ratio is optimized to stabilize cell osmotic pressure in an expansion period; and a supplementary application mechanism based on a precipitation threshold (greater than or equal to 10mm) and a copper preparation application isolation regulation are established in a matched manner. According to the technology, the three-effect synergy that the soft rot prevention and control rate is larger than 90%, the glucomannan viscosity improvement rate is larger than 70% and the waterlogging survival rate is larger than 85% is achieved, and the core restriction of high-yield and high-quality production of the konjak is systematically solved.

Present invention teaches the method of using a keratin hydrolysis peptide (“KHP”) solution to improve the growth of various farming plants exposed to acidity stress by selectively choosing specific weights of feathers and water, and treating the mixture to a high-temperature high-pressure hydrolysis process, the resulting solution is confirmed to contain at least 253 peptides and then infused to the soil or other growth medium. Optionally, the KHP solution can be diluted by water, as disclosed in the specification, for applying to the soil or other growth medium.

The invention belongs to the technical field of organic fertilizer processing, and discloses a method for preparing three independent organic liquid fertilizers of nitrogen, phosphorus and potassium by using a liquid organic fertilizer. Targeted chelation and gradient membrane separation technologies are adopted, independent separation of three nutrients of nitrogen, phosphorus and potassium is achieved, the product can be precisely applied, the nutrient utilization rate is increased, the problem that traditional liquid organic fertilizers are mixed in nutrient is solved, and nitrogen, phosphorus and potassium organic liquid fertilizers are respectively and precisely provided according to the requirements of crops. The method meets the requirements of green agriculture, the recovery rate of the chelating agent is larger than or equal to 90%, the desorption agent is environmentally friendly and free of secondary pollution, meanwhile, the product retains organic active ingredients, and fertilizer efficiency and soil improvement are both considered.

The invention provides a preparation method of an amino acid liquid fertilizer, and relates to the technical field of amino acid liquid fertilizers. According to the preparation method of the amino acid liquid fertilizer, the amino acid liquid fertilizer is prepared from the following raw materials in parts by mass: 550-650 parts of a nutrient solution, 350-400 parts of liquid amino acid, 60-70 parts of boric acid, 50-60 parts of zinc sulfate and 5-6 parts of a root growth promoting agent. The amino acid is combined with the boric acid and the zinc sulfate, and then is combined with the root growth promoting agent, so that the liquid fertilizer capable of meeting the crop rooting requirement can be prepared, and the defects that the liquid fertilizer applied in the existing production is low in amino acid, boron and zinc content, cannot completely meet the requirements of crop growth and is short in fertilizer efficiency lasting period are overcome. Amino acid is used as a main material and matched with other boron and zinc elements to be fully dissolved, auxiliaries are added, crops can better absorb the amino acid, boron and zinc for use, the utilization rate is increased, plant growth is promoted, the crop yield is improved, and precise application of water and fertilizer integration is matched.

The application discloses a fertilizer combination for improving the quality of cherry tomatoes produced in an arched shed in summer and an application method, and relates to the technical field of agricultural planting.The fertilizer combination comprises the following raw materials in parts by weight: 1000 parts of biogas slurry stock solution, 1 part of trehalose, 1 part of inositol, 1 part of fulvic acid and 1 part of polyglutamic acid mixture.Application is provided.The application scientifically compounding the biogas slurry with various functional synergistic substances, compared with the traditional single biogas slurry fertilizer or the application of fulvic acid, trehalose and the like, significantly enhances the content of soluble solids, soluble sugar and lycopene of cherry tomatoes under high temperature conditions, improves the sugar-acid ratio, improves the fruit hardness and flavor, effectively solves the problem of quality decline of cherry tomatoes produced in summer, has the characteristics of simple operation, green and high efficiency, and is suitable for high-quality production of cherry tomatoes in an arched shed in summer.

The invention relates to a fertilizer comprising at least one basic L-amino acid, for example arginine or lysine, the majority of the basic L-amino acid contained being present as its monophosphate. The alkaline L-amino acid phosphate may be combined with a binder and / or provided with an outermost layer as a coating. The invention also relates to a method of promoting plant growth by using a basic L-amino acid phosphate for a plant.

The present invention relates to a method for controlling discharges of nitrogen compounds in the production of cellulose carbamate (CCA). Dissolving pulp (DP) or kraft pulp is produced at a pulp mill, and the DP or kraft pulp is activated. The activated pulp is reacted with urea to produce cellulose carbamate whereby ammonia is released. The cellulose carbamate production is integrated into the pulp mill having a flue gas system such that carbon dioxide from the flue gases is reacted with released ammonia to produce urea, which is used in the carbamate production.

The invention relates to the technical field of plant growth, and discloses a preparation for synergistically promoting plant growth through small molecule peptides and microelements and a preparation method, the preparation comprises the following components by mass: 5%-30% of small molecule peptides, 0.1%-5% of microelements, 0.01%-1% of a plant growth regulator, 0.05%-1% of a surfactant, and the balance of water. The molecular weight of the small molecule peptide is 500-3000Da, the trace elements comprise one or more of Zn, Fe, Mn, Cu and B, and the plant growth regulator is one or more of IAA, GA and CTK. Through scientific compatibility of small molecule peptides and trace elements, the synergistic interaction between the small molecule peptides and the trace elements is realized. Through the synergistic effect of the two components, the growth and development of plant roots can be effectively promoted, and the absorption capacity of plants to nutrients and water is enhanced, so that the growth speed and biomass accumulation of the plants are improved, and the plants can quickly establish advantages in the early growth stage.

The invention relates to a soil conditioner for improving saline-alkali soil as well as a preparation method and application thereof, and relates to the technical field of agricultural soil improvement, and the conditioner comprises furfural residues, a deadwood fermented organic fertilizer, a microbial agent, a protein material and calcium superphosphate. Experimental results show that the conditioner can significantly improve the physical structure of saline-alkali soil, the porosity is increased to 90% or above, the field moisture capacity is increased by 40-80%, and the soil moisture content is greatly increased. Meanwhile, in planting of saline-alkali tolerant plants such as caragana microphylla and Sadong green, the seedling rate of the F2 group formula applying the conditioner is increased to 45-55%, and growth indexes such as plant height, stem diameter and root development of the plants are remarkably superior to those of a control group. The method realizes resource utilization of industrial wastes, has the advantages of good improvement effect, low cost, environmental friendliness, simple process and the like, and is suitable for rapid improvement and ecological restoration of the saline-alkali soil.

The invention relates to a preparation method of a corn steep liquor fertilizer, in particular to a preparation method of a corn steep liquor fertilizer based on circulating membrane separation enhanced enzymolysis. In order to solve the problem that the existing method for preparing the fertilizer from the corn steep liquor is extensive, the method comprises the following steps: 1, diluting the corn steep liquor, adding a biological flocculant, adding enzyme, and separating by a circulating membrane to respectively obtain filtrate 1 and concentrated liquor 1; adding enzyme into the filtrate 1, and separating by a circulating membrane to respectively obtain filtrate 2 and concentrated liquid 2; adding charcoal and a compound material into the concentrated liquid 1, uniformly stirring, drying, extruding and granulating to obtain a solid fertilizer; and adding the concentrated liquid 2 into the compound material to obtain the liquid fertilizer. No waste liquid or waste is generated in the whole process, the large-molecular-weight low-solubility slow-degradation solid fertilizer and the small-molecular-weight high-solubility easily-absorbable liquid fertilizer are prepared according to different absorption characteristics, and the method is applied to the field of fertilizer preparation.

The invention provides a saline-alkali soil improver prepared based on animal enzymes and a preparation process thereof, and relates to the technical field of soil improvement. The saline-alkali soil improver prepared based on the animal enzyme is prepared from the following components in parts by weight: 30 to 50 parts of animal enzyme fermentation liquor, 10 to 20 parts of humic acid, 5 to 10 parts of microbial agent, 5 to 10 parts of plant source water-retaining agent, 2 to 8 parts of natural organic acid, 1 to 5 parts of trace element chelate, 3 to 8 parts of sodium alginate, 2 to 5 parts of sodium lignin sulfonate and 1 to 3 parts of ferrous sulfate. The animal enzyme fermentation liquor is prepared from animal waste through anaerobic fermentation, and the animal enzyme fermentation liquor contains organic acid, enzymes and active microorganisms. The animal enzyme fermentation liquor is used as a main raw material, and organic acid in the animal enzyme fermentation liquor can neutralize soil alkalinity and reduce the pH value of soil; enzymes contained in the fertilizer can promote decomposition of organic substances in soil, increase the porosity of the soil and improve the structure of the soil; amino acid, polysaccharide and the like provide nutrition for soil microorganisms and plants, and the soil fertility is enhanced.

According to the kitchen waste treatment device and method and the organic fertilizer, grease is separated and recycled through a continuous oil separator, preliminary separation of swill oil is achieved, during further treatment, a through type reactor is subjected to hydro-thermal treatment, other organic matter existing in kitchen waste is converted into bio-oil and a water-phase product rich in nutrient elements, and the bio-oil and the water-phase product are recycled. The liquid fertilizer blending module can be used for flexibly blending humic acid or amino acid element water-soluble fertilizer according to nutrient element results in a water-phase product, the device integrates multiple functions of grease separation, hydrothermal reaction, product separation, fertilizer blending and the like, the operation process is simplified, the treatment efficiency is improved, and the production cost is reduced. The swill oil, the bio-oil and the water-phase product liquid fertilizer generated in the whole treatment process are subjected to effective resource recovery, so that the generation of secondary pollutants is reduced, and the value in the kitchen waste is extracted to the maximum extent.