1242 results about "Humic acid" 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 discloses a water and fertilizer management method for transplanted high-yield indica type two-line hybrid rice, and belongs to the technical field of rice cultivation. Comprising the following steps: (1) applying citric acid chelated calcium magnesium phosphate fertilizer to soil before transplanting; (2) applying coated controlled-release urea and a silicon-zinc fertilizer on the third day after transplanting; (3) when the tiller number reaches 2650,000-2750,000 plants / hm < 2 >, starting intermittent light field drying for three times, and deeply applying potassium magnesium sulphate before field drying; (4) laterally and deeply applying urea and a boron-humic acid chelate when tips of two inverted leaves are exposed; (5) spraying an aqueous solution in a full heading stage, wherein the aqueous solution comprises monopotassium phosphate, chelated zinc and brassinolide. Through staged precise fertilization, special chelating / controlled release fertilizer and water and fertilizer-field drying cooperation, the method has the advantages that the fertilizer utilization rate is increased, the nutritional requirements of rice in each growth period are precisely matched, and water and fertilizer cooperative management is optimized.

The invention belongs to the technical field of soil improvement, and discloses a preparation method of a humic acid biochar saline-alkali soil conditioner. The preparation method comprises the following steps: by taking waste edible fungus chaff as a raw material, activating the waste edible fungus chaff with a KOH solution, pyrolyzing the waste edible fungus chaff under a limited oxygen condition to obtain fungus chaff-based biochar with a porous structure, mixing the fungus chaff-based biochar with humic acid, a sodion replacement material (desulfurized gypsum powder and / or calcium chloride) and purified water according to a certain mass ratio, and drying and fixing at medium temperature to obtain the modifier. According to the modifier, the porous adsorption performance of the biochar, the pH adjustment and agglomeration improvement functions of the humic acid and the sodium ion replacement capacity of the calcium source material are comprehensively exerted, the sodium ion content in the saline-alkali soil is synergistically reduced, and the soil agglomeration structure and the water and fertilizer retention capacity are improved. The prepared modifier is especially suitable for soil treatment of moderate and severe saline-alkali soil in which the ratio of sodium ions to exchangeable cations exceeds 10%, and has agricultural waste resource utilization and ecological restoration values.

The invention provides a humic acid type plant pollen sensitization inhibitor as well as a preparation method and a use method thereof, and the humic acid type plant pollen sensitization inhibitor is prepared from the following raw materials in parts by mass: 1 to 2 parts of polyvinyl alcohol, 0.01 to 0.05 part of guar gum, 2 to 10 parts of acrylic acid, 0.05 to 0.2 part of initiator, 0.5 to 2 parts of potassium humate and 50 to 250 parts of water. The humic acid type plant pollen allergy inhibitor is environment-friendly and low in cost, and has good biocompatibility and allergy inhibition effect.

The invention relates to the technical field of agriculture, in particular to a plant nutrient solution for saline-alkali soil improvement and a preparation method thereof. The invention relates to a preparation method of a plant nutrient solution for improving saline-alkali soil. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides and acid modified calcium-based montmorillonite; preparing humic acid chelated calcium magnesium powder; preparing a binary compound; and preparing the plant nutrient solution. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides from calcium nitrate tetrahydrate and aluminum nitrate nonahydrate, carrying out acid modification on calcium-based montmorillonite by using dilute sulphuric acid, purifying humic acid, and mixing with calcium chloride and magnesium chloride hexahydrate to prepare humic acid chelated calcium magnesium powder. Finally, the three components are added into pig excrement fermentation liquor to prepare a plant nutrient solution, an adsorption-replacement-leaching closed loop can be formed, the desalination and alkali reduction efficiency is remarkably improved, the soil structure is improved, the effect of synergistically improving the saline-alkali soil is achieved, and therefore plant growth is promoted.

The invention relates to a special fertilizer suitable for saline-alkali soil and a preparation method thereof. The fertilizer is granular and has a multi-layer structure which is sequentially arranged from inside to outside: a nutrition core layer, a controlled release film layer, a soil improvement fast exchange layer and a microorganism attaching layer. The nutrition core layer contains nitrogen, phosphorus, potassium and medium trace elements, and meets the basic nutrient requirements of crops; the controlled release film layer is self-assembled layer by layer by adopting alginate / chitosan, a humic acid-ferrous complex and a breakable cross-linking point are inserted into the film, and starch is sprayed on the outer layer, so that an ionic strength / alkalinity dual-response controlled release system is formed; the soil improvement quick exchange layer contains microcrystalline gypsum and ferrous sulfate; the microbial epiphytic layer fixes salt-tolerant phosphate solubilizing bacteria, potassium bacteria and exopolysaccharide-producing bacillus by using a charcoal-zeolite carrier, and the bacteria are distributed on the surfaces of the particles in a dotted manner. The fertilizer realizes organic combination of soil improvement, fertilizer supply and microbial regulation and control, can significantly reduce the soil salinity and alkalinity in a saline-alkali soil environment, and improves the fertilizer utilization rate and the crop growth performance.

The invention relates to the technical field of soil remediation, in particular to a biochar-humic acid-calcium alginic acid composite saline-alkali soil modifier and a preparation and application method thereof. The modifier adopts a multi-layer structure design: biochar is pre-adsorbed by calcium chloride, compounded with sodium humate, and then crosslinked with sodium alginate to form a gel to form a composite inner core; secondly, sulfobetaine methacrylate and vinyl phosphonic acid are introduced into a sodium alginate molecular chain through graft polymerization, and modified sodium alginate is obtained to serve as an outer layer coating material; and finally, dipping the composite inner core into the outer layer solution, and carrying out graded recalcification by calcium chloride and short-time treatment by sodium sulfate to obtain a final product. Through the synergistic effect of calcium ion slow release of the inner core and zwitterionic characteristics of the outer layer, efficient replacement and long-term stable regulation and control of soil sodium ions are achieved, the pH value, the conductivity and the alkalization degree of soil are remarkably reduced, the water holding capacity is effectively improved, and the soil conditioner is suitable for sustainable improvement of moderate and severe saline-alkali soil.

The invention discloses a humic acid coated zeolite-based nutrient-loaded slow-release fertilizer as well as a preparation method and application thereof. The slow-release fertilizer comprises a zeolite-based core and a humic acid polymer coating coated outside the zeolite-based core. The slow release fertilizer provided by the invention not only retains the original high-loading nutrient loading function of the nano composite zeolite material, but also endows the nano composite zeolite material with chemically stable ion exchange and adsorption functions, thereby thoroughly getting rid of the original'instant nutrient fertilizer salt core '; the slow-release fertilizer provided by the invention takes artificial humic acid as a coating material, so that the use of chemical organic materials and solvents is completely avoided. According to the invention, the conversion of the inorganic fly ash solid waste and the organic biomass solid waste from raw materials to the ecological slow-release fertilizer is realized. Meanwhile, the efficient conversion of zeolitization and humification in the chemical industrial process realizes the large-scale production of the zeolite-based material doped with the heterogeneous metal in the pore cage frame structure and the carbon-negative humic acid polymer material.

The invention relates to the technical field of agricultural cultivation management, in particular to a precise honeysuckle fertilization method based on soil nutrient monitoring, which comprises the following steps: S1, measuring soil nutrient parameters of a honeysuckle planting field; s2, the nitrogen supply level, the phosphorus supply level and the potassium supply level of the soil are judged; s3, determining the dilution ratio of the humic acid macroelement water-soluble fertilizer; s4, diluting the humic acid macroelement water-soluble fertilizer into a solution according to the dilution ratio; s5, applying the solution diluted in the step S4 in a root irrigation mode; s6, measuring the growth and quality indexes of the honeysuckle after fertilization to verify the fertilization effect. According to the method, on-demand application of the humic acid water-soluble fertilizer and traceable quantitative management of the fertilization effect are realized through closed-loop verification of the fertilization decision and the growth quality index based on the soil nutrient supply level.

The invention provides a wormwood planting fertilizer and application thereof, and belongs to the technical field of agricultural planting. The wormwood planting fertilizer is prepared from the following components in parts by weight: 10 to 15 parts of humic acid, 5 to 8 parts of amino acid, 2 to 3 parts of wormwood extract A, 3 to 5 parts of wormwood extract B, 15 to 20 parts of nitrogen-phosphorus-potassium compound fertilizer, 0.01 to 0.03 part of sodium selenite, 0.02 to 0.05 part of zinc sulfate, 0.3 to 0.5 part of cellulose nanocrystal, 0.01 to 0.03 part of malic acid and 0.1 to 0.2 part of sodium alginate. By means of the two-dimensional design that components synergistically enhance absorption and the planting process is matched with the growth rhythm, the problems that in traditional fertilization, nutrients are unbalanced, the selenium and zinc utilization rate is low, and pest and disease damage prevention and control are difficult are solved, efficient absorption of wormwood on microelements, accurate supply of nutrients and reduction of the pesticide use amount are achieved, and the yield of the wormwood is increased. The yield and the medicinal quality are synergistically 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 a humic acid type biological organic fertilizer and a preparation method thereof, and belongs to the technical field of agricultural biologication.The fertilizer is prepared from weathered coal humic acid raw powder, seaweed processing residues and insect manure as main raw materials. The soil conditioner is prepared by adding a compound microbial agent, a mineral synergist, an enzyme preparation, a coating material, a soil structure regulator, a signal molecule inducer, a trace rare earth element additive, a stabilizer and the like in a specific ratio and adopting a two-step fermentation process. The fertilizer disclosed by the invention has remarkable functions of soil improvement, nutrient slow release, microbial community regulation and control, crop stress resistance enhancement and the like, remarkably improves the yield and quality of crops, reduces the use of chemical fertilizers, promotes agricultural sustainable development, and has remarkable economic and ecological benefits.

The invention relates to a water treatment and membrane separation technology, and provides an integrated catalytic separation membrane, a preparation method thereof, and a water treatment method and system. According to the membrane, polyvinylidene fluoride is used as a continuous phase to form a porous matrix, and cerium dioxide is embedded and fixed in a mode of uniform dispersion in a membrane body in a phase inversion membrane forming process; in the presence of illumination and peroxysulfate, active species are generated through in-situ activation on a membrane-water interface, and membrane separation is completed synchronously. The water treatment method comprises the following steps: adding peroxymonosulfate or peroxydisulfate into a water body to be treated, and filtering through the membrane under illumination; the photothermal effect generated by organic matter degradation intermediates in operation inhibits membrane pollution and maintains flux. According to the invention, short-range coupling of active sites and mass transfer channels is realized, the medicament and energy utilization rate is improved, the coating stripping and metal dissolution risk is reduced, and the method is suitable for drinking water pretreatment, reclaimed water deep treatment and treatment of water containing natural organic matters / humic acid.

The invention belongs to the technical field of soil improvement, and relates to a soil conditioner for improving sandy soil structure and a preparation method thereof, and the preparation method specifically comprises the following steps: preparing activated humic acid, preparing a nano mineral material, preparing modified biochar, constructing biochar composite gel, and preparing konjac glucomannan-sodium alginate water-retaining colloid. Mixing the biochar composite gel, the water-retaining colloid and the slow-release fertilizer, granulating and the like. Through a ternary synergistic system of the biochar composite gel, the water-retaining colloid and the slow-release fertilizer, the functional singleness is broken through, the structure-water retention-fertilizer supply integration is realized, and the problems that an existing sandy soil conditioner is single in function, poor in component synergism, weak in environmental adaptability, insufficient in long-term effect and the like are solved.

The invention discloses a traditional Chinese medicine residue organic compound fertilizer special for acid-base imbalance barren soil and a production method, and relates to the technical field of soil improvement and fertilizer.The organic compound fertilizer is prepared from, by volume, 50-70 parts of fermented traditional Chinese medicine residue matrix, 15-30 parts of mineral nutrient unit, 5-15 parts of biological activity enhancer and 3-10 parts of structure conditioner; wherein the fermented traditional Chinese medicine residue matrix is prepared by taking traditional Chinese medicine pharmacy mixed residues as raw materials and performing solid-state fermentation through a complex microbial inoculant containing aspergillus niger and the like; the mineral nutrient unit is compounded by urea and the like; the biological activity enhancer contains humic acid and the like; the structure conditioner is a mixture of attapulgite and sodium carboxymethyl cellulose (5: 1-8: 1). According to the organic compound fertilizer, the fermented traditional Chinese medicine residues with the organic matter content larger than or equal to 45% serve as a matrix, the mineral nutrient unit, the biological activity enhancer and the structural conditioner which are coated in a slow-release mode are matched, a synergistic system is formed, three-stage fermentation is adopted, the microbial activity is kept, and the pH lt can be improved; 6.0 or gt; 8.5 of sand / clayey barren soil.

The invention relates to the technical field of environmental remediation, and particularly discloses a soil remediation agent for heavy metal pollution and a preparation method of the soil remediation agent. The soil remediation agent is prepared from 30 to 40 parts of modified biomass charcoal, 15 to 20 parts of chitosan-humic acid composite gel, 5 to 8 parts of arbuscular mycorrhizal fungal spore suspension, 3 to 5 parts of heavy metal-resistant microbial strains, 2 to 3 parts of plant-based nano zero-valent iron, 10 to 15 parts of sodium alginate solution, 1 to 2 parts of compound enzyme preparation and 8 to 12 parts of bio-based calcium carbonate. According to the invention, the adsorption material is prepared from the waste biomass, and a dynamic response remediation system is constructed by combining microbial microencapsulation and multi-component synergistic proportioning, so that efficient fixation of heavy metals, soil ecological protection and remediation cost optimization are realized, and the problems of high reversibility risk, large ecological disturbance, insufficient soil adaptability and the like of a traditional remediation agent are solved.

The invention provides an organic-inorganic-microbial composite water and fertilizer retention soil conditioner and a preparation method thereof. The organic-inorganic-microbial composite water and fertilizer retention soil conditioner comprises an organic material, a microbial agent and composite phosphate fertilizer slow-release carboxylated modified hydrogel microbeads (inorganic material), the compound phosphate fertilizer slow-release carboxylated modified hydrogel microbeads are mixed with organic materials such as humic acid and a microbial agent, so that the phosphorus slow-release effect and the soil water absorption and retention effect are further improved, and the compound phosphate fertilizer slow-release hydrogel microbeads have high water absorption and retention and fertilizer slow-release functions, can effectively improve soil, increase the soil water retention and phosphate fertilizer effectiveness, improve the enzyme activity of the soil and improve the fertilizer utilization rate. Soil moisture and fertility loss is reduced; the raw materials are wide in source, low in cost, safe and harmless, the preparation process is simple, and the prepared soil conditioner is harmless to the soil environment, has high water absorption and water retention and a fertilizer slow release function, can effectively improve soil and can be used for enhancing the water retention and physicochemical properties of the soil.

The invention relates to the technical field of soil amendments, in particular to a soil amendment containing earthworm enzymatic hydrolysate and a preparation method of the soil amendment. The soil conditioner containing the earthworm enzymatic hydrolysate comprises the following components: earthworm enzymatic hydrolysate microcapsules and adjuvant particles in a mass ratio of (2-4): 1, the earthworm enzymatic hydrolysate is prepared by performing enzymolysis on fresh earthworm homogenate by compound enzyme, and the compound enzyme comprises cellulase and protease; the wall material of the earthworm enzymatic hydrolysate microcapsule comprises at least one of chitosan, calcium alginate, gelatin and Arabic gum; the auxiliary agent comprises humic acid and inorganic natural minerals. According to the soil conditioner containing the earthworm enzymatic hydrolysate, the earthworm enzymatic hydrolysate is wrapped by the microcapsules, the retention rate of active ingredients in the earthworm enzymatic hydrolysate can be remarkably increased, and the soil condition can be further improved by matching with humic acid and inorganic natural minerals for use.

The invention belongs to the technical field of water treatment, and particularly relates to a preparation method and application of a PDA / CS composite adsorbent loaded with a bimetallic system, and the preparation method comprises the following steps: 1) dissolving dopamine in a Tris buffer solution to prepare a dopamine prepolymer solution; then adding FeCl3, and carrying out constant-temperature water bath; centrifuging the obtained black suspension, performing suction filtration, washing, collecting a filter cake, and performing freeze drying to obtain PDA microspheres; 2) dispersing PDA microspheres in deionized water, and carrying out ultrasonic treatment until the PDA microspheres are uniformly dispersed; 3) dissolving chitosan in an acetic acid solution, and adding CuCl2 to prepare a mixed solution; the suspension obtained in the step 2 is dropwise added into a mixed solution for constant-temperature water bath, the pH of the mixed solution is adjusted through a NaOH solution, glutaraldehyde is added for constant-temperature water bath after constant-temperature water bath, and 4, the obtained suspension is subjected to centrifugation, suction filtration, washing, filter cake collection and freeze drying.

The invention discloses a special organic fertilizer for soybeans and a preparation method thereof, and belongs to the technical field of organic fertilizers. The special organic fertilizer for soybeans is prepared from the following raw materials in parts by weight: 8-10 parts of fish protein modified charcoal, 40-50 parts of decomposed soybean meal, 20-25 parts of decomposed livestock and poultry manure, 15-20 parts of humic acid, 10-15 parts of plant ash, 3-5 parts of a seaweed extract and 0.1-0.3 part of ammonium molybdate. According to the organic fertilizer, the soybean meal fermented by the trichoderma reesei and the aspergillus awamori and the fish protein modified biochar are added, the two components are compounded with the cooked livestock and poultry manure, the humic acid, the plant ash, the seaweed extract and the ammonium molybdate to form the organic fertilizer, the nitrogen fixation capacity of the soybeans is effectively improved through the synergistic effect of various substances, and the growth and development of the soybeans are remarkably promoted; the soybean yield and quality are improved. In addition, the whole organic fertilizer preparation process is free of strong acid and strong alkali treatment, the environmental pollution risk is reduced, and the standard of organic agriculture is met.

The invention belongs to the technical field of fertilizer synergists, and particularly relates to a polysaccharide yeast chelating synergist suitable for fertilizers and application of the polysaccharide yeast chelating synergist. The polysaccharide yeast chelating synergist suitable for the fertilizer is prepared from the following raw materials in parts by weight: 10 to 25 parts of polyglutamic acid, 1 to 5 parts of zymosan, 8 to 15 parts of modified polyacrylamide, 8 to 12 parts of sodium humate, 1 to 5 parts of trace elements, 5 to 10 parts of filler and 6 to 10 parts of organic acid. By adding the modified polyacrylamide, the zymosan, the filler and other components into the polyglutamic acid, the fertilizer retention capacity and slow release performance of the fertilizer are effectively improved, and the yield and quality of crops are further improved.

The invention discloses a compound fertilizer for improving the utilization rate of nutrient elements and a preparation method thereof, and belongs to the technical field of organic fertilizer and microbial fertilizer manufacturing. The compound fertilizer comprises the following components in parts by mass: 10-30 parts of a nitrogen source, 5-20 parts of a phosphorus source, 10-25 parts of a potassium source, 3-15 parts of a synergist, 1-5 parts of medium trace elements, 2-8 parts of a coating material and 8-15 parts of a plant growth promoter. The plant growth promoter is a specific deuterated benzene ring derivative and has the structural characteristics as shown in formula 1. The preparation method comprises the processes of raw material mixing and crushing, microbial pre-fermentation, coating liquid granulation, fluidized bed coating and the like. Through chelation of humic acid, activation of a microbial agent and synergism of a deuterated molecular structure, the utilization rate of nitrogen, phosphorus and potassium is increased to 1.5 times or more of that of a conventional fertilizer, field tests show that the yield of purple cabbage can reach 4083 kg / mu, the yield is increased by 31.4% compared with that of a traditional compound fertilizer, meanwhile, the soil microbial environment is improved, and intelligent slow release of nutrients is achieved.

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

The invention discloses a multi-element conditioning fertilizer suitable for acid soil and a preparation method thereof, and the multi-element conditioning fertilizer suitable for acid soil comprises the following components by mass: 8-18 parts of diatomite; 20 to 30 parts of calcium humate; 25-35 parts of a silicon calcium magnesium phosphate fertilizer; 10 to 20 parts of chitosan modified humic acid; 5-10 parts of amino acid chelated medium trace elements; 15 to 25 parts of a biochar-based complex microbial inoculant; 3-8 parts of modified zeolite; 3-8 parts of polyglutamic acid; the multi-element conditioning fertilizer suitable for the acid soil contains various innovative components, chitosan modified humic acid improves the stability and adsorption performance of humic acid, amino acid chelated medium trace elements improves the absorption and utilization rate of the medium trace elements, polyglutamic acid enhances the water and fertilizer retention capacity of the fertilizer, and the water and fertilizer retention capacity of the fertilizer is improved. The diatomite and the modified zeolite significantly increase the porosity of the soil and improve the air permeability and drainage of the soil, and the components cooperate with each other, so that the physicochemical properties and biological activity of the acid soil can be comprehensively adjusted.

The invention discloses a preparation method of a piezoelectric response type hybrid ceramic membrane, which is characterized in that polyvinylidene fluoride powder is used as a base material of the membrane, propylene carbonate or ethylene carbonate is used as a diluent, negative-voltage-loaded piezoelectric ceramic modified nanoparticles are doped, and a proper amount of inorganic piezoelectric nanoparticles are doped, so that the electrical property of the pressed membrane is remarkably improved; a negative charge group introduced to the surface of the membrane through surface grafting is combined, so that the relative content of beta crystal forms of the polyvinylidene fluoride membrane is increased, and finally efficient interception and excellent anti-pollution effects on humic acid are achieved.

The invention relates to the technical field of fertilizer preparation, and particularly discloses a biological organic fertilizer rich in deep sea enzymolysis fish protein and a preparation method of the biological organic fertilizer. The biological organic fertilizer is prepared from the following components in parts by weight: 35 to 45 parts of organic fertilizer (containing deep sea enzymolysis fish protein, tobacco powder, meat powder and bone meal), 6 to 15 parts of compound microorganism (such as bacillus licheniformis and the like), 5 to 10 parts of medium element fertilizer, 1 to 2 parts of trace element fertilizer, 0.1 to 1 part of xanthan gum and sulfur suspension, 30 to 35 parts of outer layer fertilizer (containing humic acid, urea and the like) and 0.1 to 0.5 part of anti-blocking agent. The preparation method comprises the following steps: separately fermenting microorganisms to prepare bacterial powder; mixing, crushing and granulating the raw materials to form master batches; spraying xanthan gum and sulfur suspension on the surface of the master batch to form a film; spraying the outer-layer fertilizer slurry for several times; and finally, an anti-blocking agent is sprayed, and air drying is conducted. The deep sea enzymolysis fish protein is taken as a core, the balance of quick-acting fertilizer efficiency and slow release is realized, the soil structure can be improved, the crop growth is promoted, the stress resistance and the fertilizer utilization rate are improved, the soil-borne diseases are inhibited, and the method has the advantages of high efficiency, environment friendliness, economy, practicability and the like.

The invention discloses a water-soluble fertilizer containing humic acid. The water-soluble fertilizer comprises the following components in parts by weight: 5-8 parts of ammonium sulfate, 28-32 parts of calcium ammonium nitrate, 18-22 parts of monoammonium phosphate, 32-38 parts of potassium sulfate and 10-15 parts of modified potassium humate. The preparation method comprises the following steps: carrying out alkali extraction on modified humic acid obtained by modifying lignite to prepare modified potassium humate, adding the modified potassium humate into a fertilizer raw material, and granulating to prepare the humic acid-containing water-soluble fertilizer. The preparation process comprises the following steps: S1, crushing and sieving the ammonium sulfate, the calcium ammonium nitrate, the monoammonium phosphate and the potassium sulfate, adding the modified potassium humate into a granulator in proportion, and uniformly stirring to obtain a mixture; s2, urea and water are prepared into a solution according to the mass ratio of 1: 3; and S3, uniformly spraying the urea guniting solution prepared in S2 into the raw material layer, and stirring until liquid drops and powder are in full contact to form particles to prepare the fertilizer. The humic acid-containing water-soluble fertilizer produced by the invention has the advantages of high nutrient content, soil structure improvement, crop root growth promotion and yield increase.

The invention discloses a method for preparing a humic acid water-soluble fertilizer from caragana microphylla slurry and melaleuca alternifolia essential oil, and relates to the technical field of fertilizers. The problems that raw material resources for preparing the humic acid water-soluble fertilizer are limited, and the preparation cost is high are solved. The method specifically comprises the following steps: preparing raw materials: caragana microphylla, melaleuca alternifolia essential oil and an auxiliary reagent; preparation and biotransformation of caragana microphylla pulp; emulsifying the melaleuca alternifolia essential oil; performing fertilizer compounding and quality regulation and control; and processing and storing finished products. The method has the characteristics of efficient utilization of resources, function synergy and environmental friendliness, the caragana microphylla in the preparation raw materials is a waste branch in a desert area and can turn waste into wealth, the essential oil is a natural extract and replaces a chemical synthesis synergist in an existing preparation method, soil is improved through humic acid, soil-borne diseases are inhibited through the essential oil, root absorption is promoted through the essential oil, and the soil-borne diseases are prevented from being damaged. Meanwhile, the humic acid water-soluble fertilizer is free of harmful residues and suitable for green agriculture.

The invention relates to the technical field of soil improvement, and particularly discloses a soil conditioner based on microbial community regulation and control and a preparation method thereof, the soil conditioner comprises: (a) a composite functional flora comprising nitrogen-fixing bacteria, phosphate solubilizing bacteria, potassium-dissolving actinomycetes and trichoderma, and the viable count ratio of the nitrogen-fixing bacteria to the phosphate solubilizing bacteria to the potassium-dissolving actinomycetes to the trichoderma is (1.0-1.5): (0.8-1.2): (0.5-1.0): (0.3-0.8); b) modified biochar carrier: the modified biochar carrier is prepared by oxygen-limited thermal cracking of agricultural wastes and is subjected to surface modification by a chitosan solution with a mass fraction of 3-5%; (c) a synergistic component which comprises humic acid particles and an enzymolysis seaweed extract; (d) a flora activator: compounding fructo-oligosaccharide and L-aspartic acid according to a mass ratio of 2: 1; through the synergistic effect of multifunctional composite flora of nitrogen-fixing bacteria, phosphate-solubilizing bacteria, potassium-solubilizing actinomycetes and trichoderma, the biotransformation process of nitrogen, phosphorus and potassium elements in soil is synchronously activated, and the modified charcoal carrier is subjected to multi-stage pyrolysis and chitosan modification to form a graded pore structure.

The invention relates to the technical field of compound fertilizers, in particular to a compound fertilizer for saline-alkali soil and a preparation method thereof, and the compound fertilizer comprises the following raw materials in parts by weight: 35-40 parts of cow dung, 15-20 parts of sodium humate, 7-11 parts of a modified zeolite molecular sieve agent, 4-7 parts of a conditioning agent based on shell powder, 3-5 parts of trace elements and 4-7 parts of an inorganic fertilizer. According to the compound fertilizer for the saline-alkali soil, the cow dung material and the sodium humate are matched with the trace elements and the inorganic fertilizer, meanwhile, the modified zeolite molecular sieve agent and the shell powder-based regulator are added for mutual blending and optimization, and the prepared compound fertilizer can optimize the yield and growth quality of plants when being used in the saline-alkali soil through co-matching and synergistic effects of the raw materials; meanwhile, the physicochemical properties of the soil can be adjusted.