4259 results about "Nitrogen phosphorus" patented technology

The invention discloses a particle-typed composite fertilizer of humic acid and manufacturing method, which consists of dressing and karyosome, wherein the dressing contains nitrogen, phosphor and potassium. The manufacturing method comprises the following steps: graining humic acid; cladding; graining; solidifying fused fertilizer on the particle of humic acid; making the composite fertilizer dissolved into water without falling; fitting for large scale of agricultural product.

The high-durability flexible polyurethane cold cure molded foam of the invention has an overall density of not less than 35 kg / m3 and not more than 45 kg / m3 and a wet heat compression set of not more than 15%, and preferably has a hardness change ratio, as determined in a repeated compression test, of not more than 15%. This foam can be obtained by the process of the invention. The process of the invention is a process for producing a flexible polyurethane cold cure molded foam obtained from a polyol and / or a polymer polyol containing dispersed polymer microparticles obtained by radical polymerizing a compound having an unsaturated bond in the polyol, water, a catalyst and a polyisocyanate, wherein the polyol is a polyol synthesized by the use of a catalyst containing at least one compound selected from the group consisting of a compound having a nitrogen-phosphorus double bond, cesium hydroxide and rubidium hydroxide. The foam of the invention has a low density and is excellent in durability, particularly in hardness change ratio in a repeated compression test and wet heat compression set. According to the process of the invention, such a foam can be obtained.

The present invention provides biological fertilizer compositions that comprise yeast cells that have an enhanced ability to fix atmospheric nitrogen, decompose phosphorus minerals and compounds, decompose potassium minerals and compounds, decompose complex carbon compounds, over produce growth factors, and over produce ATP. The biological fertilizer composition of the invention can replace mineral fertilizers in supplying nitrogen, phosphorus, and potassium to crop plants. Methods of manufacturing the biological fertilizer compositions and methods of uses are also encompassed.

The invention provides a nitrogen, phosphorus and sulphur doping or co-doping carbon dot and a batch controllable preparing method and application thereof. The method comprises the steps that a carbon source, a nitrogen source, a phosphorus source and a sulphur source are evenly mixed, and a mixture is obtained, wherein the molar ratio of C to N to P to S in the mixture is 1 to 0-0.8 to 0-0.4 to 0-0.4, and the contents of N, P and S are prevented from being zero at the same time; in the air, the mixture is heated to be fused, the reaction is carried out for 3 min to 60 min, natural cooling is carried out till the indoor temperature is reached, a reaction product is separated by a silicagel column, raw materials which do not react are removed, and the nitrogen, phosphorus and sulphur doping or co-doping carbon dot is obtained. According to the method, the technology is simple, the compound time is short, batch producing can be achieved, the doping amount can be adjusted and controlled accurately, the fluorescence color of the prepared carbon dot ranges from blue to green, the application can be achieved on bioluminescence marking and cell imaging aspects, and the good economic benefit and the application prospect are achieved.

The invention provides a special organic-inorganic composite biological pesticide-fertilizer for flowers. The special organic-inorganic composite biological pesticide-fertilizer for flowers comprises the following raw materials in parts by weight: 80-90 parts of municipal sludge, 10-20 parts of fruit peel, 10-20 parts of fallen leaves, 10-15 parts of poultry manure, 10-14 parts of bagasse, 20-30 parts of iron ore slag, 10-12 parts of animal feathers, 10-15 parts of tree ash, 10-15 parts of monoammonium phosphate, 20-25 parts of urea, 10-12 parts of ammonia sulfate, 8-10 parts of ammonium hydrogen carbonate, 8-10 parts of potassium chloride, 5-7 parts of carboxymethyl chitosan, 20-30 parts of modified bentonite, 5-8 parts of lignite, 2-4 parts of black dye tree, 9-11 parts of celastrus angulatus, 9-11 parts of common carpesium fruit, 9-11 parts of radix sophorae flavescentis, 4-6 parts of lilac daphne flower bud, 3-5 parts of coptis root, 10-12 parts of powder of root of stellera chamaejasme, 2-4 parts of vegetable oil, 1-3 parts of zinc sulfate, 3-4 parts of ferrous sulfate, 0.8-1.2 parts of borax, 20-26 parts of potassium fulvate and 0.3-0.4 part of EM (effective microorganism) strain. The pesticide-fertilizer disclosed by the invention has the advantages of scientific ratio of nitrogen, phosphorus and potassium, easiness in absorption by crops, obvious yield-increasing benefit and the like. By applying the pesticide-fertilizer, the nutrient absorption of plants can be balanced, the quality of flowers can be effectively improved, plants are green in leaves and bright in flower, and the flowering phase is also prolonged.

The invention is a composition comprising a) one or more organotitanates having four ligands wherein the ligands are hydrocarbyl, optionally containing one or more functional groups having one or more heteroatoms selected from the group comprising oxygen, nitrogen, phosphorus and sulfur wherein two or more of the ligands may form a cyclic structure; b) one or more mercaptosilanes; c) one or more polyaminosilanes; d) one or more secondary aminosilanes; and e) a solvent which dissolves the components of the composition. This composition is referred to as a clear primer hereinafter. In another embodiment the invention is a system for bonding glass to a substrate which comprises a clear primer according to the invention; and an adhesive comprising an isocyanate functional prepolymer and a catalyst for the cure of the isocyanate functional prepolymer.

The invention relates to a nitrogen-phosphorus double-doped carbon-coated transition metal diphosphide hydrogen evolution catalyst and a preparation method thereof. The nitrogen-phosphorus double-doped carbon-coated transition metal diphosphide is characterized in that the structural formula is MP2@NPC, a transition metal diphosphide MP2 is used as a core, nitrogen-phosphorus double-doped carbon NPC is used as a shell so that a core-shell structure is formed, the diphosphide has a nano-particle structure, the particle size is less than 50nm and good crystallinity is obtained. The composite catalyst has the electrocatalytic hydrogen evolution activity similar to that of the commercial platinum carbon and catalyst stability better than that of the commercial catalyst. The catalyst has a wide application prospect.

The invention discloses a compound fertilizer special for sugarcanes and a production method thereof. Raw materials of the compound fertilizer special for the sugarcanes comprise inorganic fertilizers, organic fertilizers, compound amino acid, secondary elements and microelements. Weight percentage of each component in total weight of the compound fertilizer special for the sugarcanes is that the inorganic fertilizers occupy 16%-29%, the organic fertilizers occupy 15%-30%, the compound amino acid occupies 5%-15%, the secondary elements occupy 0.1%-0.5%, and the microelements occupy 0.03%-0.1%. The compound fertilizer special for the sugarcanes can promote nitrogen, phosphor, potassium and other nutrient elements to transfer and gather from mature portions of the sugarcanes to growing portions of the sugarcanes, and improves content of the nutrient elements in sugarcane stem growing portions and sugarcane leaves, thereby promoting growing of the sugarcanes and synthesizing and accumulating of cane sugar, and improving per unit yield, sugar content and economic benefit.

The present invention provides biological fertilizer compositions that comprise yeast cells and garbage. The yeast cells of the invention have an enhanced ability to fix atmospheric nitrogen, decompose phosphorus minerals and compounds, decompose potassium minerals and compounds, decompose complex carbon compounds, overproduce growth factors, overproduce ATP, decompose undesirable chemicals, suppress growth of pathogenic microorganisms, or reduce undesirable odor. The biological fertilizer composition of the invention can replace mineral fertilizers in supplying nitrogen, phosphorus, and potassium to crop plants. Methods of manufacturing biological fertilizer compositions, and methods of uses are also encompassed.

The invention relates to the field of environmental wastewater treatment, specifically to a nitrogen-phosphorus wastewater treating method by a sequencing batch reactor coupled photobioreactor. The method provided by the invention is characterized in that it comprises the following steps of: removing impurities and sediments of high concentration nitrogen-phosphorus wastewater and then treating the wastewater by using active sludge in the sequencing batch reactor, decanting a supernatant from the sequencing batch reactor, adding the supernatant into a membrane bioreactor for further aerobic treatment, filtering by ultrafiltration membrane in the membrane bioreactor to remove micro-suspension and bacteria, adding a generated ultrafiltration supernatant into a photobioreactor, disinfecting by ozone and adding algae filament as well as a few necessary nutrient salt, filling with carbon dioxide waste gas to perform microalgae cultivation, discharging a algae liquid after a microalgae growth cycle and adding the algae liquid into a flocculating settling pool for sedimentation, standardly discharging or reusing a supernatant liquor, compressing the concentrate algae liquid at the bottominto a microalgae cake by a plate and frame filter press. The invention has advantages of wide range of treated nitrogen-phosphorus wastewater water quality variation and production of economical microalgae with the utilization of nitrogen and phosphorus nutrients in wastewater as more as possible.

The invention is a composition comprising a) one or more organotitanates or zirconates having four ligands wherein the ligands are hydrocarbyl, optionally containing one or more functional groups having one or more heteroatoms selected from the group comprising oxygen, nitrogen, phosphorus and sulfur wherein two or more of the ligands may form a cyclic structure with the proviso that one of the ligands has an acidic moiety; one or more strong organic acids or a mixture thereof; b) one or more alkoxysilanes; c) optionally one or more high molecular weight resins; and d) a solvent which dissolves the components of the composition. This composition is referred to as a clear primer hereinafter. Preferably, the composition comprises both an organotitanate or zirconate and a strong acid.

The invention discloses a functional bioorganic fertilizer and a semi-organic fertilizer and a preparation method thereof. The method comprises the following steps of: adding microzyme into livestock manure to perform anaerobic and aerobic fermentation; deodorizing, drying and crushing (after biogas slurry of residues after fermentation in a methane tank is separated, the biogas dregs are dried and crushed); adding a certain amount of humic acid, amino acid, borax, ammonium molybdate and zinc sulfate, or also adding nitrogen, phosphor and kalium inorganic nutrients; automatically blending materials by using a computer according to a proportion; after uniformly stirring, granulating by using a granulator, and drying, cooling and screening the grains; and coating a synergist and nitrogen-fixing, phosphorous-dissolving and potassium-releasing composite bacteria on qualified grains to prepare the functional bioorganic and semi-organic fertilizers. The product has the functions of preserving moisture and fertility, resisting drought, coldness, plant diseases and insect pests and the like, improves the soil structure, promoting the proliferation of beneficial microorganisms in soil, jointly participating substance circulation of a soil ecosystem and the like, has quick response and long effect, is mainly used as a base fertilizer for crops to save time and manpower, can realize waste recycling, protects ecological environment, integrates land utilization, land nourishment and land protection, and ensures constant soil productivity.

The invention provides a preparation method and an application of a nitrogen and phosphorus co-doped porous carbon catalyst and belongs to the field of oxygen reduction catalysts for a fuel cell cathode. Nitrogen and phosphorus are introduced with an in-situ doping method, and the nitrogen and phosphorus doping amount is changed by adjusting the content of a nitrogen and phosphorus precursor. Besides, nitrogen and phosphorus co-doped porous carbon is prepared with a hard template method, and controllability of pore diameters of the porous carbon is realized by adjusting a hard template. The method comprises steps as follows: an earlier polymer of aniline monomers, a phosphorus precursor, a silica-based hard template and non-precious metal salt is prepared; the earlier polymer is calcined, and solids are obtained; the solids are etched, cleaned and dried, and the carbon material is obtained. More importantly, the prepared nitrogen and phosphorus co-doped porous carbon material has an excellent oxygen reduction electro-catalytic property under the acid condition and has huge application potential.

The invention discloses an amino-acid chelated organic fertilizer and a production method thereof. The amino-acid chelated organic fertilizer is prepared from the following raw materials: 38-56wt% (weight percent) of organic matters, 10-15wt% of composite amino acid, 10-15wt% of chelating agent, 2-4 wt% of trace elements and 20-30wt% of nitrogen, phosphorus and potassium. Each gram of product contains more than 20 millions of live beneficial microbes. The amino-acid chelated organic fertilizer has the functions of improving the physical and chemical performances and the water and nutrient retaining performances of soil and promoting the formation of soil aggregates, is an preferential organic agriculture fertilizer, is suitable for vegetables, fruits, rice, corn, bananas, peppers and other crops, can ensure the high yield, good quality and good taste of agricultural products and can ensure that the nutrients of the agricultural products are increased significantly.

The present invention provides biological fertilizer compositions that comprise yeast cells and cattle manure. The yeast cells of the invention have an enhanced ability to fix atmospheric nitrogen, decompose phosphorus minerals and compounds, decompose potassium minerals and compounds, decompose complex carbon compounds, overproduce growth factors, overproduce ATP, decompose undesirable chemicals, suppress growth of pathogenic microorganisms, or reduce undesirable odor. The biological fertilizer composition of the invention can replace mineral fertilizers in supplying nitrogen, phosphorus, and potassium to crop plants. Methods of manufacturing biological fertilizer compositions, and methods of uses are also encompassed.

The invention discloses a preparation method of a nitrogen-phosphorus co-doped carbon nanosheet and application of the preparation method.Nitrogen-phosphorus co-doped carbon nanosheet catalyst material is prepared by: calcining at high temperature, template-free one-step self-assembled precursors: melamine and phytic acid.Oxygen reduction tests show that prepared N-P / CNS-1000 shows corrected initial potential and higher current density, represents four-electron transfer reaction, can match with commercial Pt / C and shows both excellent ethanol resistance and long-range stability in alkali solutions.

The invention relates to a preparation method for a composite microbial seaweed organic liquid fertilizer, which comprises the following steps: (1) ingredient treatment: adding 0.1-0.6 part by weight of complex enzyme and 0.1-0.4 part by weight of microbial leaven to 100 parts by weight of seaweed-crushed liquor of which the water content is 70-90 percent, and evenly mixing; (2) aerobic fermentation: filling an ingredient obtained in the step (1) into a fermentation tank, and carrying out the aerobic fermentation for 5-8 days at the temperature of 40-60 DEG C under the condition that pH is 5-7 to obtain fermentation liquor; (3) filtering: filtering the fermentation liquor obtained in the step (2) to obtain filter liquor; and (4) compounding: adding functional fungicides to the filter liquor obtained in the step (3), wherein the functional fungicides comprise nitrogen-fixing bacteria, phosphate-solubilizing bacteria and potassium bacteria; or / and adding bacillus subtilis and Bacillus licheniformis to the filter liquor obtained in the step (3); and carrying out blending on nitrogen phosphorus potassium (NPK) so as to enable the content of the NPK to reach the goal that N+P2O5+K2O isnot less than 4 percent.

The present invention provides biological fertilizer compositions that comprise yeast cells and sludge. The yeast cells of the invention have an enhanced ability to fix atmospheric nitrogen, decompose phosphorus minerals and compounds, decompose potassium minerals and compounds, decompose complex carbon compounds, overproduce growth factors, overproduce ATP, decompose undesirable chemicals, suppress growth of pathogenic microorganisms, or reduce undesirable odor. The biological fertilizer composition of the invention can replace mineral fertilizers in supplying nitrogen, phosphorus, and potassium to crop plants. Methods of manufacturing biological fertilizer compositions, and methods of uses are also encompassed.

The invention discloses an organosilicon foliage fertilizer and making method, which is the leach of charred rice husk with water without polluting and side effect, wherein the foliage fertilizer is made of nitrogen, phosphine, potassium fertilizer, trace fertilizer, humic acid, plant growth modifier dissolved in the water with organosilicon fertilizer. The invention reaches effective utility due to kinds of nutritious element adsorbed by plant, which improves the crop production for forage crop, bean culture, vegetable and fruit tree.

The invention relates to an industrial production method and device of a urea-formaldehyde slow-release compound fertilizer and a device thereof. The industrial production method comprises the steps of adding water and oxidized starch to a reaction still and then pasting, adding urea of which the nitrogen content is 46wt% and formalin, stirring, dissolving and then adjusting the pH value to 8.5-8.8 by an alkaline matter, reacting at constant temperature of 60 DEG C to obtain reaction liquid; adjusting the pH value to 5.4-5.1 by the reaction liquid; reacting for 45 minutes at the constant temperature of 65-68 DEG C, then adjusting the pH value to 6.8-7.2, and terminating reaction to obtain the urea formaldehyde condensation product solution; mixing the urea formaldehyde condensation product solution with nitrogen, phosphorus and potassium materials, pelletizing, drying and cooling to below 35 DEG C, and screening to obtain the urea-formaldehyde slow-release compound fertilizer. The industrial production device of the urea-formaldehyde slow-release compound fertilizer is also provided by the invention. Urea formaldehyde is taken as a skeleton; rapid disintegration phenomenon of fertilizer particles caused by water absorption expansion is effectively prevented; the urea-formaldehyde slow-release compound fertilizer has good nutrient slow-release performance, and is high in pelletizing rate in the production process and strong in granule hardness, and the total nutrient content is improved.

The invention relates to a preparation method and application of a biological organic-inorganic liquid fertilizer. The biological organic-inorganic liquid fertilizer mainly comprises the following components: a beneficial bacterium with the content of 0.5 to 2 hundred millions per milliliter, nitrogen phosphorus and potassium with the content of 150g / L to 350g / L, organic carbon with the content of 150g / L to 300g / L, and a medium trace element with the content of 1g / L to 20g / L. The preparation method of the biological organic-inorganic liquid fertilizer comprises the following steps of first, carrying out fermentation cultivation on a beneficial microorganism solution, so that the content of an effective bacterium in the beneficial microorganism solution is above 100 hundred millions per milliliter, adding a microbial inoculum vigor-sustaining agent into a bacterium solution, treating the bacterium solution for 2 hours, then adsorbing the bacterium solution which is well treated by using a carrier, and adding the bacterium solution of which the adsorption is completed into the organic-inorganic liquid fertilizer, wherein the organic-inorganic liquid fertilizer needs to be subjected to a reaction in advance, so that inorganic nutrients in the organic-inorganic liquid fertilizer are subjected to an organic reaction, so as to reduce the harm of a high salt to a live bacterium.

The invention relates to a plant culture medium and a module thereof. The medium is characterized by comprising following raw material including 20-40 parts by weight of peat soil, 15-25 parts by weight of compost excrements of livestocks, 15-25 parts by weight of humic acid, 10-25 parts by weight of nitrogen-phosphorus-potassium mixed fertilizers, 3-15 parts by weight of expanded perlites, 3-15 parts by weight of shiitake fungus or fermented straw fine fibers, 3-10 parts by weight of amino acid, 0.1-3 parts by weight of probiotics, 0.1-3 parts by weight of protease, 0.1-3 parts by weight of marine bioactive extracts, 0.1-3 parts by weight of antimicrobial peptides, 0.1-3 parts by weight of rooting agents and 0.1-3 parts by weight of microelements. The marine bioactive extracts adopt sea algae extracts or mussel extracts. The probiotics utilize bacillus subtilis strains. The protease utilizes papain. The module is low in weight, convenient in transport, convenient in application and good in water permeability and air permeability and satisfies all kinds of nutrition needed by plants.

The invention provides a preparation method and application of nitrogen and phosphorus co-doped porous carbon materials which are used in the aspects of electric catalysis, catalyst carriers, super capacitors, water treatment and the like. The method comprises that a carbon source, a nitrogen source, a phosphorus source and a carbonization activating agent are mixed in different proportions, ground, then subjected to high temperature carbonization treatment in nitrogen gas, and then subjected to acid treatment to obtain the porous carbon materials with different nitrogen and phosphorus compositions. The prepared carbon materials are used as non-noble metal catalysts; compared with traditional noble metal catalysts, the materials have the advantages of simpler preparation process, high activity, strong anti-poisoning ability, and good stability, and are ideal oxygen reduction catalysts for fuel cells. The prepared carbon materials are used as catalyst carriers; compared with traditional carbon powder carriers, the catalysts loaded with nanoparticles have the catalytic activity, stability, anti-poisoning ability and the like improved significantly. The carbon materials have relatively idea effects when used in the fields of super capacitors and water treatment.

The invention discloses a rod-shaped nitrogen and phosphorus co-doping mesoporous carbon material and a preparation method and application thereof. The rod-shaped nitrogen and phosphorus co-doping mesoporous carbon material is of a mesoporous structure and comprises the following components based on atomic percent: 23.70 to 33.85% of nitrogen content, 0.51 to 0.72% of phosphorus content, and the balance of carbon; the aperture is distributed from 1.74 to 1.95nm; the specific surface area is about 585 to 1,173m<2> / g; the pore volume is 0.49 to 1.07cm<3> / g. The preparation method comprises the following steps: mixing and agitating rod-shaped mesoporous silica, an organic high-molecular polymer, a nitrogen-containing precursor, a phosphorus-containing precursor and alcohol, in order to enable the carbon source, a nitrogen source and a phosphorus source to be fully dipped into a pore channel of mesoporous silica; drying until alcohol is completely volatilized to obtain a nitrogen source / phosphorus source / carbon phosphorus / silica composition; sequentially processing by high-temperature carbonizing, silica removing and drying to obtain the rod-shaped nitrogen and phosphorus co-doping mesoporous carbon material. The rod-shaped nitrogen and phosphorus co-doping mesoporous carbon material is applied to manufacturing of an electrode material for a super capacitor.

The invention discloses an urban sewage treatment system and purification method and belongs to the technical field of sewage treatment. The sewage treatment and purification method comprises the steps of collection, physical precipitation, chemical precipitation, anaerobic biological treatment, anoxic biological treatment, aerobic biological treatment, adsorption, disinfection, ultrafiltration membrane filtration and sludge treatment in sequence. According to the method, a physical precipitation method, a chemical precipitation method and a biological purification method are used comprehensively to perform step-by-step classification treatment on different pollutants, the purification efficiency is high, the effluent quality is good, the nitrogen and phosphorus treatment capacity is higher, operation and maintenance are convenient, management is simple, and popularization and use can be realized.

The invention discloses a special composite fertilizer for tea. The composite fertilizer is prepared from the following components according to a certain weight ratio: an oil tea cake, peanut bran, Chinese herbal medicine residue, humic acid, manure of livestock and poultry, a biological bacterial preparation, a nitrogen-phosphorus-potassium fertilizer, a biological insecticide, zinc sulfate, magnesium sulfate, sodium molybdate and calcium superphosphate. According to the invention, an organic fertilizer, medium trace elements and a quick-acting inorganic fertilizer are organically combined, the Chinese herbal medicine residue is added at the same time, and therefore, the characteristic of combined fertilizer effects and insecticide effects of the composite fertilizer is obtained. The special composite fertilizer provided by the invention has the advantages of a reasonable formula, balanced nutrition, safety, no pollution, capacity of completely satisfying short-term and long-term demands of tea trees for nutrients and effects of balanced fertilization, soil improvement, environmental protection and effective promotion of output and quality of tea.

The invention discloses an amaranth special soilless culture nutrient solution and a preparation method thereof. The amaranth special soilless culture nutrient solution is prepared by major elements, trace elements and water. The major elements are composed of nitrogen, phosphorus, potassium, calcium, magnesium and sulfur. The trace elements are composed of iron, manganese, copper, zinc, boron and molybdenum. The amaranth special soilless culture nutrient solution is reasonable in component, rich in nutrition and low in cost, wherein raw materials are wide in source and readily available. The amaranth special soilless culture nutrient solution provides various nutrient elements and trace elements required for the growth and the development of amaranth, so that the robust growth of amaranth is realized. The transplanting stock survival rate of amaranth and the fruit and vegetable quality are improved, so that the yield and the quality are increased. The preparation method is reasonable, simple and easy in process, high in efficiency, low in application cost, simple in operation, easy to implement and extremely high in application prospect. The amaranth special soilless culture nutrient solution and the preparation method thereof are convenient to use and apply.

The invention discloses a selenium-enriched rice which is produced by processing selenium-enriched paddy rice, the selenium-enriched paddy rice is obtained by applying a nutritional agent for the selenium-enriched paddy rice in the soil of a paddy field for cultivation after land preparation and before irrigation, and the weight composition of the nutritional agent for the selenium-enriched paddy rice is as follows: nano-selenium plant nutritional agent: nitrogen-phosphorus-potassium compound fertilizer is equal to 0.1-1: 1, wherein the weight concentration of selenium in the nutritional agent for the selenium-enriched paddy rice is 2000-10000mg / kg. The selenium content of the selenium-enriched rice is 0.04-0.300mg / kg, the proportion of organic selenium is more than 80%, and the form is safer. The production method of the selenium-enriched rice is simpler, the using amount of the nutritional agent for the selenium-enriched paddy rice is small, and the environmental pollution is small.

The invention discloses a special fertilizer for oil tea. The fertilizer is prepared from the following components according to a certain weight ratio: an oil tea cake, peanut bran, sawdust of paulownia, bone meal, Chinese herbal medicine residue, humic acid, a nitrogen-phosphorus-potassium fertilizer, a biological bacterial preparation, a biological insecticide, zinc sulfate, magnesium sulfate, sodium molybdate and borax. According to the invention, long-term demands of oil tea for nutrients can be completely satisfied when the special fertilizers for the oil tea with different proportions of N, P and K are applied in different growth stages of the oil tea, and the special fertilizer provided by the invention has the advantages of a reasonable formula, balanced nutrition, safety, no pollution and capacity of promoting better growth of the oil tea, enhancing soil environment and improving quality and oil output of the oil tea.

The invention relates to the crop growing field, particularly relates to a soil improver taking biomass particle carbide discarded in agriculture and forestry as a matrix and a preparation method thereof. The carbon-base soil improver comprises biomass particle charcoal, calcium magnesium phosphate or calcined lime, and binder, and also comprises other fertilizers, such as urea, monoammonium phosphate powder, potassium chloride, zinc sulfate, boricfertilizer, manganese sulfate, ammonium molybdate, ferrous sulfate and copper sulfate and the like. The biomass particle charcoal is a black powdered carbon particle (carbon soot) generated by incomplete combustion of the biomass under hypoxemia condition, has various properties similar with soil humus (acid) and strong ability to absorb and maintain nutrients, such as nitrogen, phosphorus and potassium and the like, and has obvious water retention and moisture preservation effects. The soil improver prepared by the preparation method has the characteristics of soil structure improvement, moisture and fertility preservation, temperature increasing, efficient environmental protection and wide application prospects and the like.