50 results about "Potassium Metaphosphate" patented technology

The invention relates to a neodymium-doped potassium gadolinium phosphate laser crystal of which the molecular formula is Nd:KGdP4O12, belonging to monoclinic systems. The neodymium-doped potassium gadolinium phosphate laser crystal has C2 / c space group structure, wherein neodymium ions are used as doping ion to substitute the lattice position of gadolinium ions, and the doping content of the neodymium is 1-20at / %.The preparation method is implemented in a way that: a mixture of Gd2O3, Nd2O3, K2CO3 and NH4H2PO4 is used as a raw material, potassium metaphosphate obtained by reacting K2CO3 and NH4H2PO4 is used as a fluxing agent, and a self-flux method is utilized to prepare the neodymium-doped potassium gadolinium phosphate laser crystal.The laser crystal preparation technique is simple and easy to operate; the prepared crystal can not be easily cloven, has the advantages of of moderate hardness, favorable mechanical properties, favorable thermal properties and favorable optical spectral characteristics, and is used as a working substance in a solid laser; a flash lamp or LD is used as a pumping source to activate the laser output of which the wavelength is 1.06 mu m; and thus, the invention can be widely used in the fields of spectroscopy, biomedicine and military affairs.

The invention discloses compound fertilizer special for promoting crop growth. The compound fertilizer comprises, by weight, 40-50 parts of ammonium nitrate, 30-40 parts of bagasse, 30-40 parts of peanut meal, 20-40 parts of straw powder, 20-40 parts of alfalfa meal, 15-30 parts of corn gluten meal, 10-30 parts of hydrolyzed feather meal, 20-30 parts of rice chaff, 10-15 parts of shii-take residues, 5-8 parts of EM bacteria, 10-15 parts of magnesium hydrogen phosphate, 20-30 parts of urea, 22-30 parts of nitrate of potash, 15-20 parts of potassium metaphosphate, 4-5 parts of zinc nitrate, 10-20 parts of manganese phosphate, 2-8 parts of magnesium humate, 3-6 parts of sodium humate, 10-20 parts of sepiolite, 10-20 parts of expanded perlite and 10-15 parts of montmorillonoid. The compound fertilizer special for promoting crop growth can effectively solve the problems that soil is hardened, the drought resisting effect is poor and soil fertility is low.

The invention provides an efficient water-holding color retention agent for meat products, and a preparing method and a using method of the efficient water-holding color retention agent. The raw materials of the water-holding color retention agent comprise sodium tripolyphosphate, trisodium pyrophosphate, potassium polymetaphosphate, disodium dihydrogen pyrophosphate, sodium pyrophosphate, sodium hexametaphosphate, D-sodium isoascorbiate, gluconolactone and salt. The trisodium pyrophosphate in the raw materials has better miscibility and a neutral pH value, and the pH value and the dissolving capacity of a phosphate system can be changed through adding appropriate trisodium pyrophosphate; a potassium polymetaphosphate aqueous solution has certain viscosity, so that juice seeping out from the meat products is reduced, and meanwhile the potassium polymetaphosphate aqueous solution has high metal ion chelating capability, can effectively chelate metal ions when being matched and used together with other components, can reduce oxidative rancidity during meat product processing and enable color-protecting components to play effect effectively, and the appropriate pH value can ensure that protein swelling is promoted to reach an optimal yield to effectively resolve the water binding capacity of the actomyosin, so that the meat products are endowed with excellent mouthfeel and sensory quality.

The invention discloses a special compound fertilizer for cucumbers, which is prepared from the following raw materials in parts by weight: 30-40 parts of ammonium nitrate, 20-30 parts of bagasse, 30-40 parts of peanut pulp, 15-25 parts of straw powder, 20-30 parts of alfalfa meal, 15-20 parts of corn protein powder, 10-20 parts of hydrolyzed feather meal, 20-25 parts of rice chaff, 10-15 parts of shiitake slag, 5-8 parts of effective microorganisms, 25-35 parts of organic leavening, 10-15 parts of magnesium hydrogen phosphate, 20-30 parts of urea, 22-25 parts of potassium nitrate, 15-18 parts of potassium metaphosphate, 3-6 parts of zinc nitrate, 2-5 parts of manganese phosphate, 8-12 parts of calcium humate, 1-4 parts of magnesium humate, 3-6 parts of sodium humate, 10-15 parts of meerschaum, 10-13 parts of expanded perlite and 10-15 parts of montmorillonite. The special compound fertilizer for cucumbers greatly enhances the yield of the cucumbers under the interactions of the organic fermentation fertilizer and inorganic fertilizer.

Potassium-containing polyphosphate glasses having a relatively high amount of potassium and a relatively low level of insoluble material (e.g., less than about 10% by weight), and a method for their production that includes using a boron-containing glass-former additive. More specifically, these polyphosphate glasses may be described according to the formula M(n+2)O(PO3)n, where M is at least K or K+Na and the glasses have a mole % M-as-K that is about 33 to 100. These polyphosphate glasses may be used in reduced sodium foods (e.g., beverages and meat products).

The invention relates to a chemical product production technology, and in particular relates to a production method and production equiopment of potassium polymetaphosphate. The production method of the potassium polymetaphosphate comprises the following steps: holding monopotassium phosphate with a ceramic container; and heating the inner part of the ceramic container to a first temperature, and maintaining the first temperature for a first preset time. The production equipment of the potassium polymetaphosphate comprises a ceramic container and a heating device, wherein the ceramic container is used for holding monopotassium phosphate; the heating device is used for heating the inner part of the ceramic container which is used for holding the monopotassium phosphate to the first temperature and also for maintaining the first temperature for the first preset time; and the inner part of the ceramic container is heated to a second temperature and maintained for a second preset time. According to the production method and production equiopment of potassium polymetaphosphate, the influence of metal ions on the purity of potassium polymetaphosphate can be reduced.

The invention discloses a bio-organic fertilizer. The bio-organic fertilizer is characterized by comprising the following substances in parts by weight: 90-120 parts of excrements of livestock, 15-20 parts of sodium dihydrogen phosphate, 9-12 parts of disodium hydrogen phosphate, 8-12 parts of sodium polyphosphate, 2-3 parts of chitin, 5-9 parts of pachystachys lutea saw dust, 3-5 parts of rambler rose saw dust, 4-6 parts of banana shrub saw dust, 8-11 parts of potassium metaphosphate, 3-9 parts of diammonium phosphate, 9-15 parts of Chinese pyrola herb, 4-6 parts of inula flower, 2-6 parts of common yam rhizome, 5 parts of potassium dihydrogen phosphate and 2-7 parts of anhydrous calcium chloride. The bio-organic fertilizer is capable of realizing plant growth, promoting the plant growth, inhibiting the growth of various bacteria in soil and inhibiting the growth of various nematodes or soft insects in soil by improving the own immune function of plants, promoting plant growth and improving the own conditions of the soil.

The invention discloses a tertiary calcium phosphate / zirconia bioceramic and a preparation method thereof, and relates to the field of biomaterials. The bioceramic is prepared from the following ingredients in parts by weight: 40-60 parts of tertiary calcium phosphate, 20-40 parts of zirconia, 5-15 parts of calcium silicate, 3-6 parts of nano titanium oxide, 3-6 parts of medical stone powder, 4-9 parts of potassium metaphosphate and 2-5 parts of nano tungsten oxide. The preparation method comprises the following steps: (1) weighing; (2) ball milling; (3) cold press molding; (4) high-temperature calcining; (5) cooling. The bioceramic is better in biocompatibility and higher in biological activity, meanwhile has excellent compressive strength and fracture tenacity, and is an ideal bone renovating and substitute material.

The invention discloses an organic activated strawberry coated fertilizer. The fertilizer is characterized by being prepared from the following raw materials in parts by weight: 30-35 parts of hog manure, 34-36 parts of manioc waste, 3-5 parts of attapulgite clay, 1-2 parts of ferrous sulfate, 28-32 parts of activated humic acid, 14-15 parts of peat, 19-24 parts of ammonium nitrate, 16-21 parts of potassium metaphosphate, 7-14 parts of urea, 1-2 parts of cyanuric acid, 1-2 parts of sodium selenite, 2-3 parts of gelatin, 4-6 parts of EM microbial inoculum, 6-8 parts of soil improvement agents, and an appropriate amount of water. The fertilizer disclosed by the invention is convenient to use, the fertilizer not only can be used as base fertilizer but also can be used as an additional fertilizer, and if the fertilizer is used for a long term, the fertilizer can have the effects of improving the soil, enhancing the capacity of root systems, improving the stress resistance of crops and increasing the utilization rate of the fertilizer.

The invention discloses an anti-shrinkage and antibacterial finishing agent and a preparation method of the finishing agent. The finishing agent comprises the following components by weight parts: 8-12 parts of dodecyl polyglycol ether, 3-5 parts of zeolite powder, 3-4 parts of gelatin, 2-3 parts of tea polyphenol, 3-6 parts of ethylene glycol diglycidyl ether, 2-6 parts of potassium metaphosphate, 40-60 parts of 1,3-propylene glycol and 180-200 parts of water. The preparation method of the finishing agent comprises the steps of heating, stirring, homogenizing and sealing. The finishing agent prepared by adopting the method has the anti-shrinkage and antibacterial functions on clothes.

The invention relates to a method for producing agricultural potassium metaphosphate, comprising the following steps: mixing agricultural monoammonium phosphate with potassium chloride, adding the mixture of the agricultural monoammonium phosphate and the potassium chloride to a reactor and heating the reactor to make the agricultural monoammonium phosphate and the potassium chloride react to generate molten potassium metaphosphate, sublimed ammonium chloride and water vapor; discharging the molten potassium metaphosphate, cooling and grinding to obtain the potassium metaphosphate product after the reaction; and cooling and recovering the sublimed ammonium chloride to be used as the agricultural fertilizer. The agricultural monoammonium phosphate accounts for 60-75 percent by weight, and the potassium chloride accounts for 25-40 percent by weight; the mass ratio of the agricultural monoammonium phosphate to the potassium chloride is 100:47-55; the agricultural monoammonium phosphate and the potassium chloride react at 600-900 DEG C are stand for 1-4h; and the reactor is a graphite reactor. The method can be used for producing the agricultural potassium metaphosphate and the ammonium chloride product without discharging the waste material, is easy to control, provides a new way for producing the slow-release potassium-phosphate fertilizer and has better economic and environmental-friendly benefits.

The invention provides a phosphatic fertilizer for a spore plant. The phosphatic fertilizer comprises the following components in percentage by weight: 2 to 8 percent of bacillus cereus, 2 to 8 percent of bacillus licheniformis, 2 to 8 percent of bacillus mucilaginosus, 2 to 8 percent of polyaspartic acid, 20 to 30 percent of potassium metaphosphate, 25 to 35 percent of monoammonium phosphate, 7 to 15 percent of diammonium phosphate and 10 to 20 percent of double superphosphate. Spores generated by bacilli are used for activating mineralized phosphorus elements and potassium elements in soil,and phosphorus elements and potassium elements which are easily absorbed and used by the plant are released, so that the utilization efficiency of the fertilizer is improved, and the yield of crops and the quality of agricultural products are improved at the same time.

The invention discloses an erdosteine composition dry suspension for treating a respiratory system disease and belongs to the technical field of medicine. A composition is prepared from erdosteine, sorbitol, potassium metaphosphate, acacia gum and glycyrrhizin. The erdosteine is a novel crystalline compound and is different from erdosteine in the prior art, and an X-ray powder diffraction pattern shown as figure 1 is obtained by means of measurement with Cu-Kalpha rays. Through experiments, the novel erdosteine crystalline compound has good solubility and high stability, and the prepared dry suspension is high in stability and bioavailability and extremely suitable for clinical application.

The invention discloses a high-temperature-resistant noise-reduction anti-rusting paint for a power distribution cabinet. The high-temperature-resistant noise-reduction anti-rusting paint is characterized in that the high-temperature-resistant noise-reduction anti-rusting paint is prepared from the following raw materials in parts by weight: 3 to 5 parts of phytic acid, 1 to 2 parts of iron oxide red, 2 to 3 parts of titanium dioxide, 1 to 3 parts of magnet powder, 2 to 4 parts of potassium silicate, 2 to 3 parts of potassium hexametaphosphate, 1 to 2 parts of antimony trioxide, 2 to 3 parts of polyacrylate, 1 to 2 parts of diethylene glycol benzoate, 1 to 2 parts of a cross-linking agent TAIC, 3 to 4 parts of petroleum sodium sulfonate, 30 to 34 parts of epoxy resin, 18 to 24 parts of organic silicon resin, 8 to 12 parts of dimethylbenzene, 5 to 7 parts of ethyl acetate and 4 to 6 parts of auxiliaries. According to the paint, muting effects are remarkably better than those of other paints, the paint also has good high-temperature-resistant and anti-rusting functions, the service life of the power distribution cabinet can be prolonged, the maintenance cost can be lowered, and high cost performance can be achieved.

The invention discloses a continuous dynamic polymerization large-scale production method for high-viscosity non-caking potassium polymetaphosphate.The method includes: adding a phosphorus containing material and a potassium containing material into a neutralizing tank, stirring for complete reaction, preparing neutralization liquid, and controlling a PH value in 3.0-5.0; transferring the liquid to a smelting furnace with a high-temperature-resistant corrosion-resistance liner directly or after concentration and crystallization or drying and dewatering, performing high-temperature melting at the temperature of 850-1000 DEG C; after materials in the smelting furnace is completely melted, discharging out of the smelting furnace, quickly cooling and solidifying, and grinding to 20 meshes below; transferring to a stainless steel rotary furnace for sintering reaction at the temperature of 450-650 DEG C for 0.5-2.0h, and discharging to obtain the high-viscosity non-caking potassium polymetaphosphate.The high-viscosity non-caking potassium polymetaphosphate can be produced by existing conventional phosphate production equipment, and high efficiency, method simplicity and convenience in implementation are realized.

The invention discloses a soilless culture nutrient solution which comprises the following components in parts by weight: 85-115 parts of wood vinegar, 25-45 parts of urea humate, 20-40 parts of potassium metaphosphate, 15-30 parts of disodium octaborate tetrahydrate, 10-25 parts of zinc sulfate, 10-20 parts of magnesium chloride and 2000-2300 parts of pure water. The wood vinegar, which is used as the formula component, is a pure natural substance which is distilled out from perennial oak by high temperature, contains K, Ca, Mg, Zn, Ge, Mn, Fe and many other minerals, contains more than 200 organic matters, including phenols, acids, alcohols, ketones and the like, also contains vitamins B1 and B2, is a system substance with complex composition, multiple functions and relatively high stability, and has the functions of plant growth promotion, disinfection, sterilization, moth and corrosion resistance and the like.

The technical scheme of the invention discloses a preparation method of optical-grade potassium metaphosphate, wherein the preparation method comprises the following steps: (1) carrying out a reactionof potassium hydroxide, phosphoric acid and water according to a certain proportion to obtain a crude potassium dihydrogen phosphate solution; (2) adjusting the concentration of the crude potassium dihydrogen phosphate solution, and enabling the crude potassium dihydrogen phosphate solution to pass through ion exchange resin at a certain flow rate to remove non-ferrous metals and impurity ions; (3) evaporating and concentrating to obtain a concentrated solution containing 30% or more of monopotassium phosphate; and (4) dehydrating the concentrated solution to obtain the optical-grade potassium metaphosphate finished product, wherein the removed moisture comprises free water and structural water. According to the technical scheme, the preparation method is high in adaptability to potassiumhydroxide serving as a raw material, the crude potassium dihydrogen phosphate reaction solution is purified by adopting an ion exchange method, high-purity potassium metaphosphate powder can be prepared in combination with a clean spray calcination mode, and various indexes meet the requirements of optical glass and laser glass raw materials.

The invention provides an antibacterial and mold-proof anion waterborne fireproof coating and a preparation method thereof, relating to the field of waterproof building and ornament materials. The coating is characterized by containing the following raw materials in parts by weight: 10-25 parts of an acrylate emulsion, 5-12 parts of water glass, 5-15 parts of melamine, 8-15 parts of aluminum hydroxide, 9-17 parts of ammonium hydrogen phosphate, 7-15 parts of pentaerythritol, 6-12 parts of titanium dioxide, 6-12 parts of talcum powder, 4-10 parts of calcium carbonate, 0.8-3 parts of potassium metaphosphate, 1-4 parts of chlorinated paraffin, 3-8 parts of anion powder, 0.5-2.5 parts of quaternary ammonium salt, 0.5-3 parts of OBPA, 0.5-1 part of a dispersing agent, 0.1-1 part of a suspendingagent, 0.3-1.5 parts of a defoaming agent, 0.3-0.8 part of a flatting agent and 20-50 parts of water. The antibacterial and mold-proof anion waterborne fireproof coating has the beneficial effects that multiple functions are integrated, the fire can be resisted, the breeding of harmful bacteria such as staphylococcus aureus and escherichia coli can be effectively prevented, the breeding of fungisuch as Aspergillus niger can be prevented, and anions can be durably and effectively released, so that the body health of people is promoted.

The invention relates to a process for preparing food-grade potassium metaphosphate by virtue of arsenic removal on molten potassium dihydrogen phosphate. The process comprises the following steps: under a heating and stirring condition, reacting haloid acid with molten potassium dihydrogen phosphate so as to generate an arsonium halide substance with a low boiling point, performing subliming, directly further heating molten potassium dihydrogen phosphate subjected to arsenic removal for dehydration polymerization reaction, thereby obtaining the food-grade potassium metaphosphate. By virtue of adopting the method, the process has the beneficial effects that 1) the method is convenient in operation process, and solid-phase molten potassium dihydrogen phosphate subjected to arsenic removal is capable of facilitating preparation of the food-grade potassium metaphosphate; 2), the arsenic removal process can be connected with a subsequent potassium polymetaphosphate process, and two workshop sections are seamlessly connected, so that heating melting after cooling of the potassium dihydrogen phosphate subjected to arsenic removal can be avoided, and energy losses brought by repeated heating are reduced; 3) the process for preparing the food-grade potassium metaphosphate by virtue of melting arsenic removal on potassium dihydrogen phosphate does not need crystallization and filtration processes and is free from waste water discharge; and 4), the viscosity of the food-grade potassium metaphosphate is up to 6.5mPa.s-15mPa.s.

The invention discloses growth-promoting watermelon fertilizer, characterized by being prepared from, by weight, 13-15 parts of gypsum, 3-5 parts of sodium metasilicate, 1-2 parts of lauroyl triethanolamine, 13-17 parts of potassium metaphosphate, 18-20 parts of ammonium polyphosphate, 2-3 parts of pentaerythritol, 1-2 parts of zinc borate, 13-16 parts of fulvic acid, 16-19 parts of humic acid, 1-2 parts of cyanuric acid, 1-2 parts of sodium selenite, 0.4-0.8 part of tetraethyl orthosilicate, 3-6 parts of chlorinated paraffin, and 1-2 parts of bamboo fiber. The growth-promoting watermelon fertilizer is rich in nutrition, can be absorbed and utilized fast, can provide improved crop activity and improved metabolism, can provide increased content of beneficial functional matters, and can promote growth.

The invention provides a method for producing anti-crushing granular sodium tripolyphosphate. The method comprises the following steps: (1) a neutralization reaction: adding water into a neutralization pot for heating, adding soda ash, carrying out stirring to completely dissolve the soda ash, raising the temperature of a formed solution to 40-50 DEG C, slowly adding phosphoric acid under stirring, adjusting the K value of neutralized slurry to 2.8+ / -0.1, then adding potassium metaphosphate and sodium hexametaphosphate, carrying out a reaction for 45 min and then carrying out filtering to obtain viscous slurry for subsequent usage; (2) drying and dehydration: conveying the viscous slurry obtained after neutralization to a drying tower for atomization and dehydration at 130+ / -10 DEG C; and(3) polymerization: sending the dried and dehydrated raw material back to a rotary polymerization furnace for polymerization at 210+ / -10 DEG C so as to obtain the anti-crushing granular sodium tripolyphosphate. The production method provided by the invention has the advantages of low raw material cost, simple process, easy industrialization and easy availability of raw materials; and the preparedgranular sodium tripolyphosphate has high anti-crushing strength and is not damaged in structure during transportation and storage.

The invention discloses a production method of a controlled-release phosphorus potassium fertilizer. The method comprises the following steps: (1) pretreating 100 parts of potassium sulfate, wherein potassium sulfate is agricultural potassium sulfate and needs to be pretreated, grinding and crushing the potassium sulfate, and mixing the crushed potassium sulfate with 1 part of self prepared addition agent; (2) pretreating 75 parts of monocalcium phosphate, and grinding and crushing the monocalcium phosphate; (3) mixing the potassium sulfate with the monocalcium phosphate, and then, extruding a mixture to granulates; (4) preheating at 90-120 DEG C; and (5) transferring to a special reactor to react so as to obtain potassium metaphosphate. Compared with the prior art, the method is low in synthesizing temperature and energy-saving, and cannot corrode equipment in a reaction process.

The present invention relates to a food composition, in particular a powder mix for beverages, based on leguminous-plant proteins, having improved organoleptic properties, in particular a reduced sandy mouthfeel, to a process in order to obtain said composition, and also to the uses thereof, in particular in the food-processing field and most particularly the preparation of food formulations.

The invention relates to a process for preparing food-grade potassium metaphosphate by virtue of arsenic removal on molten potassium dihydrogen phosphate. The process comprises the following steps: under a heating and stirring condition, reacting haloid acid with molten potassium dihydrogen phosphate so as to generate an arsonium halide substance with a low boiling point, performing subliming, directly further heating molten potassium dihydrogen phosphate subjected to arsenic removal for dehydration polymerization reaction, thereby obtaining the food-grade potassium metaphosphate. By virtue of adopting the method, the process has the beneficial effects that 1) the method is convenient in operation process, and solid-phase molten potassium dihydrogen phosphate subjected to arsenic removal is capable of facilitating preparation of the food-grade potassium metaphosphate; 2), the arsenic removal process can be connected with a subsequent potassium polymetaphosphate process, and two workshop sections are seamlessly connected, so that heating melting after cooling of the potassium dihydrogen phosphate subjected to arsenic removal can be avoided, and energy losses brought by repeated heating are reduced; 3) the process for preparing the food-grade potassium metaphosphate by virtue of melting arsenic removal on potassium dihydrogen phosphate does not need crystallization and filtration processes and is free from waste water discharge; and 4), the viscosity of the food-grade potassium metaphosphate is up to 6.5mPa.s-15mPa.s.

The invention provides a modification method of a positive electrode material. The modification method comprises the following steps: preparing lithium-rich phase powder containing lithium, nickel, cobalt, manganese and oxygen; mixing a coating material with a dispersing agent and a solvent, ultrasonically dispersing, dropwise adding into the lithium-rich phase powder, grinding to be dry, and calcining to obtain a coating product, wherein the coating material is selected from one or more of potassium hexafluorophosphate and potassium metaphosphate. The modification method comprises the following steps: performing surface modification treatment on xLi2MnO3. (1-x) LiNiyCozMn1-y-zO2 lithium-rich phase powder through potassium hexafluorophosphate and / or potassium metaphosphate, and performingin-situ decomposition on the potassium hexafluorophosphate at high temperature to form a potassium metaphosphate coating layer with a three-dimensional structure. The first coulombic efficiency, the cycling stability and the rate capability of the lithium-rich phase material subjected to surface coating treatment are all improved, so that relatively good electrochemical comprehensive performance is obtained, and the development requirements of high-power electronic equipment can be met. The preparation method of the positive electrode material is simple, wide in application range, low in costand suitable for industrial production.

The invention discloses an environment-friendly snow melting agent and a preparation method thereof. The agent is prepared from, by weight, 85-90 parts of formate, 8-10 parts of polylactic acid, 3-5 parts of a carbon nanotube, 2-3 parts of chitosan, 1-2 parts of metaphosphate and 3-5 parts of sodium gluconate; the metaphosphate is one of sodium hexametaphosphate, potassium metaphosphate or calciummetaphosphate. The snow melting agent has the advantages that the ability to melt snow and ice is strong, there is no corrosive effect, and the agent does not cause damage to soil and a water body after melting, has a certain nourishing effect, does not cause secondary pollution to a city and is an eco-friendly snow melting agent.

The invention discloses a special fertilizer for a tea tree and a preparation method thereof. The special fertilizer is prepared from the following raw materials in parts by weight: 45 to 50 parts ofhuman and animal excreta, 24 to 30 parts of sodium selenite, 16 to 20 parts of corn gluten, 8 to 10 parts of broad been skin, 4 to 6 parts of ammonium molybdate, 2 to 4 parts of potassium fulvic acid,20 to 25 parts of humus soil, 15 to 20 parts of calcium superphosphate, 8 to 10 parts of calcium lignosulphonate, 25 to 30 parts of clay, 6 to 8 parts of potassium metaphosphate, 3 to 5 parts of ferrous sulfate, 6 to 8 parts of sodium bicarbonate and 6 to 8 parts of bacillus subtilis. Compared with the prior art, the special fertilizer for the tea tree has the advantages that the formula is scientific; rich nutrition necessary for the tea tree growth is contained; the growth and the development of the tea tree are effectively promoted; the disease resistance and stress resistance of the tea tree are enhanced; the tea yield is improved; meanwhile, the soil hardening phenomenon is prevented; the tea quality can be improved.

The invention discloses a special humic acid rare-earth multi-element coated fertilizer for strawberries. The special humic acid rare-earth multi-element coated fertilizer is characterized by being prepared from the following raw materials in parts by weight: 25-27 parts of rape seed cake, 34-38 parts of wood scrap, 13-16 parts of fulvic acid, 16-19 parts of humic acid, 5-7 parts of attapulgite, 30-35 parts of banana peel, 13-17 parts of potassium metaphosphate, 8-12 parts of calcium magnesium phosphate, 37-39 parts of peanut bran, 18-20 parts of ammonium polyphosphate, 2-3 parts of pentaerythritol, 1-2 parts of zinc borate, 4-6 parts of rare-earth multi-element fertilizer, 5-8 parts of an EM bacterium agent, 13-18 parts of urea, 8-10 parts of soil conditioner and an appropriate amount of water. The fulvic acid and the humic acid, which are added into the fertilizer, have the functions of promoting crop growth, improving cold resistance, strengthening a root system and improving the granular structure of soil; moreover, the fertilizer is chelated with zinc and the rare-earth multi-element fertilizer, so that the element absorption of crops is promoted; the crops have the functions of water retention and drought resistance by virtue of the added soil conditioner; the variety quality can be improved by using the fertilizer, the good yield-increasing effect is achieved, and the soil structure and the fertilizer efficiency are improved.