807results about "Magnesium fertilisers" patented technology

The invention discloses a biomass charcoal composite hydrogel slow-release fertilizer as well as a preparation method and application thereof, and belongs to the field of composite hydrogel and fertilizer preparation. The invention provides a biomass charcoal composite hydrogel slow release fertilizer, which comprises biomass charcoal, hydrogel fixed on the pores and surface of the biomass charcoal, and an element fertilizer mixed in the hydrogel, and the hydrogel is prepared from metal cations and alginate. The invention provides a strategy of'in-hole in-situ gelation ', hydrogel is prepared in situ in gaps of the biochar, and the biomass charcoal composite hydrogel slow-release fertilizer is prepared. The biochar and the hydrogel in the slow-release fertilizer are high in bonding strength and mechanical strength, so that the slow-release fertilizer has the slow-release function of the fertilizer and also has the capability of improving soil.

The invention relates to a tea garden acidic soil conditioner, which is prepared from the following raw materials in parts by weight: 10 to 15 parts of alkaline conditioning materials, 10 to 30 parts of honey pomelo waste fruit fermented organic fertilizers, 4 to 6 parts of alkali modified biochar, 2 to 4 parts of biostimulant, 3 to 5 parts of graft modified chitosan, 0.25 to 0.6 part of dicyandiamide, 0.5 to 1 part of complex microbial inoculants, 0.25 to 0.5 part of binding agents and 0.006 to 0.012 part of trace element substances. The alkaline conditioning material is a mixture of magnesium-containing mineral substances and shell powder in a mass ratio of 10: (2-5); the graft modified chitosan is obtained by grafting and modifying chitosan through an unsaturated phosphorus-containing monomer and an unsaturated nitrogen-sulfur-containing monomer, and the grafting rate is 20-30%; the biostimulant comprises mineral source fulvic acid, magnesium sulfate, monopotassium phosphate and a seaweed extract. The tea garden acidic soil conditioner provided by the invention can effectively improve tea garden soil, so that the yield and quality of tea leaves are obviously improved.

The invention belongs to the technical field of soil improvement, and discloses a preparation method of a manganese slag-coconut shell charcoal-desulfurized gypsum composite soil improvement agent, the soil improvement agent and application. The preparation method of the soil conditioner comprises the working procedures of manganese residue pretreatment, coconut shell pretreatment, precursor preparation, precursor calcination and conditioner compounding, the pretreated coconut shell and the pretreated manganese residue are mixed and then subjected to ball milling, and a manganese residue-coconut shell precursor is obtained; calcining the prepared manganese residue-coconut shell precursor for 1-4 hours at the temperature of 450-650 DEG C in a protective gas atmosphere to obtain manganese residue-coconut shell biochar; and doping desulfurized gypsum powder into the prepared manganese slag-coconut shell charcoal, and uniformly dispersing to obtain the manganese slag-coconut shell charcoal-desulfurized gypsum composite soil conditioner. The method disclosed by the invention has the advantages of low energy consumption, low cost and capability of treating waste with waste, and the prepared soil conditioner has the advantages of improving soil nutrient balance, reducing nutrient loss and stabilizing pH, and is suitable for modifying the acid soil of the rubber plantation in the tropical region.

The invention relates to a particulate composition comprising, or substantially consisting of, urea, an inhibitor, preferably a urease inhibitor and / or a nitrification inhibitor, and an additive, wherein the additive comprises components (i) and (ii): (i) a carboxylic acid or an anhydride, salt, or derivative thereof; preferably a carboxylic acid salt or a carboxylic acid derivative, more preferably a carboxylic acid salt; and (ii) a polar polymer; preferably a water-soluble polar polymer. The invention further relates to a process for preparing the particulate composition, an additive for a particulate composition, and the use of the particulate composition as a fertilizer.

The invention relates to a functional microorganism-containing organic-inorganic compound fertilizer and a production method thereof, and relates to the technical field of fertilizers, the functional microorganism-containing organic-inorganic compound fertilizer comprises an inorganic core layer, an organic coating layer and a functional microorganism outer layer, the functional microorganism outer layer comprises the following components in parts by mass: 10-15 parts of compound functional microorganisms, 5-10 parts of synergistic growth-promoting microorganisms, 2-3 parts of trehalose, 1-2 parts of mannitol, 10-15 parts of sodium alginate, 8-10 parts of chitosan, 2-4 parts of a yeast extract and 30-40 parts of a modified activated carbon carrier. The production method comprises the following steps: preparing an inorganic core layer, preheating the inorganic core layer, and spraying and coating an organic coating layer material to obtain a primary product with an organic coating layer; and coating the surface of the organic coating layer of the primary product with a functional microorganism outer layer material, drying at low temperature, and screening to obtain the organic-inorganic compound fertilizer containing the functional microorganisms. The fertilizer has the effect of improving the slow release effect of the fertilizer and the survival rate of microorganisms.

The invention relates to the technical field of compound fertilizers, and discloses a boron-zinc-molybdenum synergistic compound fertilizer, which is prepared from the following raw materials in parts by weight: calcium nitrate, ammonium polyphosphate, potassium sulfate, magnesium sulfate, disodium octoborate tetrahydrate, sugar alcohol chelated zinc, sodium molybdate and a synergistic auxiliary agent, the feed additive is prepared from a feed additive, an activator, 5-alginic acid oligosaccharide, aminolevulinic acid, sugar alcohol chelated magnesium, an antagonist, a stress-resistant enhancer and a coating material. According to the boron-zinc-molybdenum synergistic interaction compound fertilizer and the preparation process thereof, the disodium octoborate tetrahydrate, the sugar alcohol chelated zinc and the sodium molybdate are compounded according to a specific proportion, antagonism is avoided through proportion limitation, the synergistic effect of the three elements is remarkably enhanced, and the problem that a single element is insufficient or excessive is solved; chelated elements such as sugar alcohol chelated zinc and sugar alcohol chelated magnesium are combined with an activating agent (humic acid chelated calcium and silica sol) to form a gel-state chelate, so that the trace elements can be prevented from being fixed by soil, and the transfer efficiency of the trace elements in crops is improved.

The invention discloses a method for preparing a liquid fertilizer and co-producing a medium element fertilizer by using raffinate acid, and relates to the technical field of preparation of fertilizers by using raffinate acid. Comprising the following steps: S1, carrying out filter pressing on raffinate acid: adding a modified filter aid into the raffinate acid, uniformly mixing, pumping into a plate-and-frame filter press, and carrying out filter pressing to obtain a raffinate acid clear liquid and filter residues; s2, preparing a liquid fertilizer from the raffinate acid clear liquid: sequentially adding desalted water, nutrient elements, synergistic factors and the raffinate acid clear liquid into a reaction kettle, and completely dissolving to obtain an acidic liquid fertilizer; s3, preparing the medium element fertilizer from the filter residues: uniformly stirring and mixing the filter residues, phosphate tailings and a modified synergistic granulating agent, granulating, drying, screening and cooling to obtain the medium element fertilizer. The technological process is simple and easy to operate, raffinate acid is only subjected to filter pressing, the treatment cost is low, the fertilizer efficiency is improved through synergistic factors in the acid liquid fertilizer, the particle strength is improved after filter residues are granulated through the modified synergistic granulating agent, and meanwhile the medium element fertilizer is endowed with the biological stimulation effect.

The application relates to an organic-inorganic compound fertilizer containing functional microorganisms and a production method thereof, and relates to the technical field of fertilizers. The fertilizer comprises an inorganic core layer, an organic coating layer and a functional microorganism outer layer. The functional microorganism outer layer comprises the following components in mass fractions: 10-15 parts of compound functional microorganisms, 5-10 parts of synergistic growth-promoting microorganisms, 2-3 parts of trehalose, 1-2 parts of mannitol, 10-15 parts of sodium alginate, 8-10 parts of chitosan, 2-4 parts of yeast extract and 30-40 parts of modified active carbon carriers. The production method comprises the following steps: preparing the inorganic core layer, preheating the inorganic core layer, spraying the organic coating layer material to coat the surface, and obtaining a preliminary product with the organic coating layer; coating the functional microorganism outer layer material on the surface of the organic coating layer of the preliminary product, low-temperature drying and screening, and obtaining the organic-inorganic compound fertilizer containing the functional microorganisms. The application has the effects of improving the slow-release effect of the fertilizer and the survival rate of the microorganisms.

The invention discloses a rice seed pelleting agent with the effects of promoting rice seedling strengthening and cold and waterlogging resistance in the bud stage, and belongs to the technical field of seed pelleting. The rice seed pelleting agent comprises an adhesive, an inert filling substance and a specific substance. Wherein the adhesive is 20% Arabic gum, the inert filling substance is bentonite, talcum powder and clay in a ratio of 1: 6: 3, the weight ratio of the inert filling substance to the rice is 2: 1, the active components comprise charcoal and calcium peroxide, the weight ratio of the charcoal to the naked rice seeds is (0.2-0.4): 1, and the weight ratio of the calcium peroxide to the naked rice seeds is (0.6-0.8): 1. The pelleting agent can promote rice seed germination and seedling establishment and enhance the stress resistance of rice.

The present invention relates to a crop nutrition and fortifying composition comprising: i. Elemental sulfur; ii. One or more water insoluble or water soluble magnesium salts or derivatives or mixtures thereof; iii. One or more water-insoluble or water-soluble potash fertilizers or salts or derivatives or mixtures thereof; iv. One or more water insoluble or water soluble iron salts or derivatives or mixtures thereof; v. One or more water insoluble or water soluble zinc salts or derivatives or mixtures thereof; vi. One or more water-insoluble or water-soluble boron salts or derivatives or mixtures thereof; vii. At least one trace element selected from the group consisting of water-insoluble or water-soluble vanadium salts or derivatives or mixtures thereof and water-insoluble or water-soluble selenium salts or derivatives or mixtures thereof; and viii. One or more excipients wherein the composition comprises microparticles having a size in the range of 0.1 to 50 microns, and wherein the total content of the water-soluble salts, derivatives or mixtures in the composition does not exceed 80% of the total weight of the composition. The invention also relates to a method for preparing the crop nutrition and fortifying composition and a method for treating a plant, a seed, a crop, plant propagation material, a locus, parts thereof or soil with the crop nutrition and fortifying composition.

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.

The invention relates to a method for preparing a silicon-calcium-potassium-magnesium phosphate fertilizer from phosphate tailings, and relates to the technical field of phosphate tailing recycling, the method for preparing the silicon-calcium-potassium-magnesium phosphate fertilizer from the phosphate tailings comprises the following steps: carrying out acidolysis on the phosphate tailings to obtain a leaching residue A and a leaching solution M; an impurity removal agent is added into the leaching slag A, heavy metal elements in the leaching slag A are removed, and leaching slag B is obtained after solid-liquid separation; activating the leaching residue B by hot alkali, and performing solid-liquid separation to obtain a filter residue A; a phosphorus supplement is added into the leachate M, and filter residues B are obtained after solid-liquid separation; and fully mixing the filter residue A and the filter residue B to obtain the silicon-calcium-potassium-magnesium phosphate fertilizer. The method disclosed by the invention is low in energy consumption and high in phosphate tailing recovery rate, and the prepared silicon-calcium-potassium-magnesium phosphate fertilizer has a relatively high adsorption effect on part of main heavy metals.

The invention discloses an ardealite-based slow release fertilizer and a preparation method thereof, the ardealite-based slow release fertilizer comprises: a core layer, the core layer comprises ardealite and a complex microbial inoculant; in the phosphogypsum, the content of fluoride is less than or equal to 0.1 wt%, and the content of phosphorus pentoxide is more than or equal to 0.1 wt%; the complex microbial inoculants comprise phosphorophilic bacteria; and the material of the coating layer comprises a scene response material. Therefore, according to the ardealite-based slow release fertilizer, the utilization rate of ardealite can be effectively increased, and meanwhile, the slow release performance of the slow release fertilizer is further optimized.

The invention discloses a composite conditioner for acid soil of slope cropland and application of the composite conditioner. The conditioner comprises the following components in percentage by mass: 12%-18% of calcium peroxide, 18%-32% of a buffer mineral compound, 1.5%-3.0% of an anti-scouring controlled-release material, 10%-25% of a nutrient carrier and fertilizer, 0.5%-3.0% of a binder and a granulation aid, and the balance of inert filler and water. The preparation process comprises the steps of dry mixing, granulation, drying and coating. The product provided by the invention can realize high residue of CaO and stable pH under the condition of heavy rainfall of slope cropland, effectively inhibit the pH fall of acid soil, reduce aluminum toxicity and reduce nutrient loss. By controlling the content and proportion of the calcium peroxide, the buffer mineral compound and the anti-scouring controlled-release material, the calcium peroxide, the buffer mineral compound and the anti-scouring controlled-release material have a synergistic effect in a slope cropland environment, so that not only is the initial rapid acid inhibition capability ensured, but also the lasting pH stability and high residual rate are realized through buffer and controlled-release technologies.

The invention relates to the technical field of suspending agent preparation, and discloses a macroelement water-soluble fertilizer suspending agent, which comprises macroelements, medium trace elements, a suspending agent and an auxiliary agent, and a preparation method of the macroelement water-soluble fertilizer suspending agent comprises the following steps of: preparing the macroelement water-soluble fertilizer suspending agent; the preparation method comprises the following steps: S1, raw material pretreatment, S2, macroelement dissolution, S3, medium trace element addition, S4, suspending agent and auxiliary agent addition, S5, fine treatment, and S6, packaging and storage, the stability of the suspending agent is significantly enhanced: a more stable suspension system is constructed by precisely adjusting the ratio of xanthan gum to the sodium carboxymethyl cellulose suspending agent, and the unique component proportion enables the fertilizer to have a better effect after the fertilizer is stored for 6 months. The nutrient precipitation rate can still be kept below 5%, the uniformity of the fertilizer in the storage and transportation process is effectively guaranteed, farmers do not need to worry about uneven fertilization caused by nutrient precipitation in the application process, it is guaranteed that crops can continuously and evenly absorb nutrients, and healthy growth is promoted.

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 discloses a comprehensive prevention and control method for tobacco root knot nematode disease containing a biological agent. The method comprises the steps of crop rotation of tobacco and buckwheat / quinoa, host resistance induction of the microbial agent in the seedling raising period, tobacco planting soil quality improvement in the transplanting period and the like. The agronomic characters of tobacco seedlings are effectively improved, and the physical characters of soil are improved; the chemical properties of soil pH, alkali-hydrolyzable nitrogen, available phosphorus, quick-acting potassium, exchangeable calcium, exchangeable magnesium and the like are improved; the activity of soil urease, sucrase, acid phosphatase, catalase and peroxidase is improved; the content of water-soluble phenols, compound phenols and total phenols in soil is reduced; the disease index of the tobacco root knot nematode disease can be remarkably reduced, the survival rate of tobacco is increased, the application amount of chemical agents is reduced, and the healthy and sustainable development of the tobacco industry is promoted.

The invention relates to the technical field of compound fertilizers, and particularly discloses a potash magnesium sulphate fertilizer and a preparation process thereof, the potash magnesium sulphate fertilizer comprises the following components: crystallized potassium sulphate, crystallized magnesium sulfate and an anti-caking agent; wherein the mass ratio of the crystallized potassium sulfate to the crystallized magnesium sulfate is (1-10): 1; the crystallized potassium sulfate and the crystallized magnesium sulfate are prepared by adopting a hot melting-cold crystallization process; the anti-caking agent is modified silicon dioxide gel loaded with a moisture absorbent, and the mass ratio of the moisture absorbent to the silicon dioxide gel in the modified silicon dioxide gel is (1-3): 10; the mass ratio of the anti-caking agent to the crystallized magnesium sulfate is (5-15): 100. The potash magnesium sulphate fertilizer with different proportions of potassium sulphate and magnesium sulfate can be designed according to needs, and the caking risk of the potash magnesium sulphate fertilizer in the storage process can be reduced.

A granular magnesium fertilizer and a preparation method therefor, a blended fertilizer, and a nitrogen-magnesium compound fertilizer. The preparation method for a granular magnesium fertilizer comprises the following steps: mixing magnesium sulfate monohydrate, light calcined magnesia and a solvent to form a mixed material; and using a double-roller compaction process to carry out compaction granulation on the mixed material.

The invention relates to the technical field of agriculture, provides a red soil hardening reduction conditioner based on modified straw adsorption carbon as well as a preparation method and application thereof, and solves the problems that an existing red soil hardening conditioner is poor in soil improvement effect and does not have a slow release function. Comprising the following steps: (1) preparing oyster shell-biochar composite powder; (2) loading functional components; (3) directional immobilization of microorganisms; (4) coating a slow-release layer; (5) activating treatment; the red soil hardening reduction conditioner is prepared from the following raw materials in parts by weight: 80 to 100 parts of oyster shell powder, 100 to 200 parts of modified straw adsorption carbon, 10 to 30 parts of rice hull powder, 30 to 50 parts of nano dihydrate gypsum, 100 to 200 parts of a polyglutamic acid solution, 10 to 50 parts of acid-resistant bacillus, 15 to 30 parts of sodium alginate, 30 to 60 parts of humic acid, 10 to 30 parts of carbide slag and 30 to 60 parts of attapulgite.

The invention relates to the technical field of soil remediation and fertilizer preparation, and discloses a soil remediation fertilizer and a preparation method thereof.The soil remediation fertilizer is formed by compounding a pre-fermented organic matrix and a function activation component, and the organic matrix comprises chicken manure, corn straw, fermented sesame cake powder and traditional Chinese medicine residue powder; a stable organic fertilizer matrix is obtained through high-temperature composting fermentation; the function activation component comprises freeze-dried saccharomyces cerevisiae embedded by chitosan-baking soda, a pineapple peel crude extract, polyglutamic acid, yeast cell walls, fulvic acid, trace mineral substances, microporous vermiculite and the like. After the fertilizer is applied into soil, the embedded flora and the slow-release carbon source are activated through soil moisture and an acid-base environment, the rhizosphere in-situ re-fermentation process is triggered, and the synergistic remediation function of continuous nutrient release, micro-ecological regulation and soil structure improvement is achieved. The product provided by the invention has the advantages of composite structure, synergistic function, controllable activation condition, good ecological adaptability and popularization value.

The invention belongs to the field of preparation of soil conditioners, and particularly relates to a soil loosening and root promoting soil conditioner and a preparation method thereof. A polymer formed by vinyltriethoxysilane, polyacrylic acid and coumarin under the catalytic action of citric acid is mixed with porous powder obtained after crushing and nutrient organic matter, and freeze-drying is performed to obtain the soil-loosening improved fermentation substrate which can be slowly released in soil; polyaspartic acid and acetylchitosamine are cross-linked under the catalytic action of N-hydroxysuccinimide, root-promoting nutrition powder and auxiliary root-promoting components are mixed, and the obtained composite root-promoting agent can significantly promote the growth of plant root systems; a porous structure contained in the protective stability maintaining agent can provide a relatively stable microenvironment for effective components, and the soil loosening and root promoting agent is mixed with the soil loosening and improving fermentation substrate and the composite root promoting agent, so that the prepared soil loosening and root promoting soil conditioner is remarkable in soil loosening and root promoting effect, long-acting and stable, small in dosage, obvious in effect and stable in conditioning effect after being stored.

The invention provides an organic-inorganic composite conditioner for improving a soil structure. Comprising the following raw materials in parts by mass: 100-150 parts of calcium, 20-50 parts of magnesium, 10-20 parts of polyglutamic acid, 0.5-2 parts of zinc, 2-4 parts of boron, 2-4 parts of iron, 100-150 parts of organic nitrogen, 150-200 parts of composite organic natural polypeptide amino acid, 50-70 parts of seaweed boron molybdenum, 50-80 parts of phosphorus calcium zinc liquid, 20-50 parts of seaweed calcium magnesium boron iron zinc and 100-120 parts of a plant nutrition preparation. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of high phosphorus and high potassium, 150-200 parts of organic waste compost, 50-80 parts of a synergist and 50-100 parts of a functional microbial agent. Through a unique chelation technology, polyglutamic acid and calcium and magnesium ions are fully fused to form an efficient medium trace element water-soluble fertilizer, calcium and magnesium are directly absorbed by a root system after flushing application, the calcium utilization rate is improved by 50% or above, and due to the fact that polyglutamic acid carries strong negative charges, fertilizer loss caused by rainwater leaching is effectively reduced, and the yield of the fertilizer is improved. And the water-retaining and fertilizer-retaining functions are more obvious when the fertilizer is used in sandy loam.

The invention discloses a foliar fertilizer for promoting sugar increase and coloring of citrus fruits and inhibiting floating skin and application of the foliar fertilizer. The foliar fertilizer is prepared from the following components: 5.2 to 6.4 g / L of medium trace element fertilizer, 1 to 3 mg / L of 5-aminolevulinic acid and 0.05 to 0.07 mg / L of coronatine. The medium trace element fertilizer comprises sugar alcohol calcium, magnesium sulfate, boric acid, selenomethionine and sodium molybdate. The medium trace elements in the fertilizer can be used for supplementing deficient nutrition for the tree body and inhibiting the occurrence of floating bark at the later stage of fruit ripening; 5-aminolevulinic acid can promote chlorophyll synthesis and improve photosynthesis, so that fruit sugar accumulation is promoted; coronatine promotes fruits to be colored in advance by activating a jasmonic acid signal pathway. The components of the foliar fertilizer disclosed by the invention have a synergistic interaction function, and the foliar fertilizer can obviously promote sugar increase and coloring of fruits and inhibit occurrence of floating peels in a full ripening period, so that early and delayed harvesting of citrus is realized, and the market economic benefits are greatly improved.

The invention relates to the technical field of compound fertilizers, and discloses a compound fertilizer with long-acting slow release and accurate oxygen supply functions and a preparation method thereof, and the compound fertilizer comprises 35-40 parts of an organic waste base material, 20-30 parts of inorganic nutrients, 5-8 parts of a binder, 2-4 parts of medium trace elements, 4-6 parts of humic acid, 2-4 parts of sodium carboxymethyl cellulose, 3-5 parts of chitosan and 3-5 parts of sodium alginate. According to the invention, chitosan and sodium alginate are adopted to form a double-layer coating on the surfaces of fertilizer particles, the outer sodium alginate forms a film with certain permeability, firstly, the film has a barrier effect on fertilizer nutrients and delays the diffusion speed of the nutrients into soil, the inner chitosan further regulates and controls nutrient release, and the chitosan and the sodium alginate have a synergistic effect, so that the slow release of the nutrients is realized. The nutrient release period is greatly prolonged, so that fertilizer nutrients can be continuously and stably supplied to soil, the problem of rapid nutrient loss after one-time fertilization is reduced, and lasting nutrient support is provided for crop growth.

The invention relates to the technical field of compound microbial fertilizers, in particular to a biochar-based compound microbial fertilizer for improving saline-alkali soil. The organic fertilizer comprises the following components in parts by weight: 30-50 parts of straws, 10-15 parts of compound microbial capsules, 20-40 parts of compost and 5-10 parts of humic acid. A multi-strain mixture composed of azotobacter chroococcum, pseudomonas and bacillus mucilaginosus is added, and comprehensive improvement of the saline-alkali soil is achieved; the azotobacter chroococcum can convert nitrogen in the air into nitrogen which can be utilized by plants, so that the dependence on chemical fertilizers is reduced; pseudomonas has efficient phosphate solubilizing capacity, and bacillus mucilaginosus can strongly solubilize potassium, so that the soil fertility is comprehensively improved. Composite microorganisms and polylactic acid are subjected to an interfacial polymerization reaction to prepare microcapsules, dopamine hydrochloride is utilized to form a coating on the surfaces of the microcapsules in a self-assembly mode, physical protection can be provided for the microorganisms, the survival rate of the microorganisms in a severe environment is increased, and the acting time of the microorganisms in soil is prolonged.

The present disclosure, in various embodiments, discloses hydrothermal methods, hydrothermally modified materials and dried hydrothermally modified materials. Certain dried hydrothermally modified materials can readily releases ionic species such as alkali metal ions (K+, Na+), silicate salts, and alkaline earth metal ions (Mg2+, Ca2+). Some dried hydrothermally modified materials can readily release aluminum ions and / or silicon, such as in the form of soluble silicates. Such processes and materials are useful, for example in economically preparing potassium releasing fertilizers.

The invention provides an amino acid water-soluble fertilizer as well as a preparation method and application thereof, and relates to the technical field of amino acid water-soluble fertilizers. The amino acid water-soluble fertilizer comprises compound amino acid, a microbial fermentation product, inorganic salt, a surfactant, a dispersing agent and a preservative, the microbial fermentation product is obtained by aerobic fermentation of radix puerariae and rhizoma atractylodis through a complex microbial inoculant; the compound amino acid is composed of animal protein hydrolyzed amino acid and vegetable protein hydrolyzed amino acid. According to the water-soluble fertilizer disclosed by the invention, through the synergistic interaction of the compound amino acid and the microbial fermentation product, multi-objective optimization of nutrition supply, stress resistance regulation and metabolism enhancement is realized, the yield and the quality of crops are remarkably improved, an efficient and environment-friendly solution for increasing the yield and improving the quality is provided for the crops, and the water-soluble fertilizer has a remarkable agricultural application value.

The present invention relates to a crop nutrition and fortifying composition comprising an effective amount of the following ingredients: elemental sulfur; one or more magnesium salt derivatives or mixtures thereof; one or more potash fertilizers or salts or derivatives or mixtures thereof; one or more iron salts or derivatives or mixtures thereof; one or more zinc salts or derivatives or mixtures thereof; and one or more excipients. The composition comprises particles having a particle size ranging from 0.1 to 50 [mu] m wherein the elemental sulfur content is from 5% to 90% by weight; the content of the element magnesium is 0.1%-40% (weight percentage); the content of the element potassium is 0.1%-40% (weight percentage); the content of the element iron is 0.1%-45% (weight percentage); and the content of the element zinc is 0.1-45% of the total weight of the composition. The invention also relates to a method for preparing the crop nutrition and fortifying composition, and a method for treating a plant, a seed, a crop, plant propagation material, a locus, parts thereof or soil using the crop nutrition and fortifying composition.

The invention relates to the technical field of saline-alkali soil improvement, in particular to an organic fertilizer for saline-alkali soil improvement as well as a preparation method and an application method thereof, and the organic fertilizer comprises the following components in parts by weight: 10-30 parts of humic acid, 10-20 parts of attapulgite, 30-40 parts of animal waste, 5-10 parts of a pH regulator, 3-5 parts of a microbial agent and 3-5 parts of a high-molecular polymer. The organic fertilizer is prepared from the humic acid, the attapulgite, the animal waste, the pH regulator, the microbial agent and the high-molecular polymer according to a specific ratio, all the raw materials can achieve a mutual synergistic effect while exerting own effects, and the saline-alkali soil improvement effect is improved; tests show that after the organic fertilizer is used, the soil pH of the saline-alkali soil is decreased by 11.1%-19.6%, the EC value of the soil is decreased by 64.4%-74.7%, and stable improvement of the saline-alkali soil can be achieved.