3693 results about "Diammonium phosphate" patented technology

A flame retardant thermoplastic composition comprises: a poly(arylene ether); an impact modifier; a polyolefin; a phosphoric acid salt selected from the group consisting of melamine phosphate, melamine pyrophosphate, melamine orthophosphate, diammonium phosphate, monoammonium phosphate, phosphoric acid amide, melamine polyphosphate, ammonium polyphosphate, polyphosphoric acid amide, and combinations of two or more of the foregoing; a metal hydroxide; and an organic phosphate wherein the amount of phosphoric acid salt by weight is greater than or equal to the amount of organic phosphate by weight. The flame retardant composition is may be used in the production of electrical wires.

A flame retardant thermoplastic composition comprising a poly(arylene ether), a block copolymer, a liquid polyolefin, and a flame retardant additive composition. The flame retardant additive composition comprises a metal hydroxide, an organic phosphate, and a phosphoric acid salt selected from the group consisting of melamine phosphate, melamine pyrophosphate, melamine orthophosphate, melem polyphosphate, melam polyphosphate, diammonium phosphate, monoammonium phosphate, phosphoric acid amide, melamine polyphosphate, ammonium polyphosphate, polyphosphoric acid amide, and combinations of two or more of the foregoing. The block copolymer comprises a block that is a controlled distribution copolymer having terminal regions that are rich in alkylene units and a center region that is rich in aryl alkylene units. The flame retardant composition may be used in the production of covered conductors.

The invention provides a specialized organic / inorganic composite biological medicine fertilizer for rape, and a preparation method thereof. The weight parts of composition raw materials are as follows: 60-80 parts of greenhouse garbage, 6-7 parts of pericarp, 6-8 parts of cotton straws, 8-10 parts of pig manure, 10-12 parts of plant ash, 10-12 parts of sugar residue, 20-25 parts of sodium humate, 10-11 parts of diammonium phosphate, 12-14 parts of potassium sulfate, 12-14 parts of urea, 12-14 parts of ammonium bicarbonate, 14-16 parts of medical stone, 12-14 parts of animal hair, 1-2 parts of EM strains, 20-22 parts of modified bentonite, 8-10 parts of celastrus orbiculatus, 3-4 parts of neem, 4-6 parts of monkshood, 3-5 parts of fiveleaf akebia fruit, 0.7-1.2 parts of boric acid, 1-1.2 parts of manganese sulfate, 2-4 parts of copper sulfate, 4-6 parts of eucalyptus oil and a proper amount of paraffin. A green organic fertilizer is obtained by mixing a plurality of organic wastes and fermenting the mixture, thereby reducing environment pollutions. The specialized organic / inorganic composite biological medicine fertilizer for the rape has the advantages of comprehensive nutrition and enhanced sterilizing effects by mixing the fermented organic materials and inorganic fertilizer and adding medicine juice of the Chinese herbal medicine having insectidical functions. With the application of the fertilizer, rape quality can be effectively increased; and the rape has green leaves, bright flower, prolonged flowering period, full seeds and increased output.

The invention relates to a method for growing blueberry, which comprises soil modification, seedling cultivation, seedling planting and fertilization. In the invention, a soil modifier is applied to soil and the organic materials in the soil modifier increase the content of fatty acids such as acetic acid and propionic acid of the soil, so the rate of mycorrhizal infection, which is capable of promoting the growth of the blueberry, improving blueberry yield, contributing to productivity improvement and soil modification and improving quality and sugar content of fruits, of the blueberry is improved; meanwhile, pine soil and grass carbon are used to regulate the pH value of the soil. In the invention, a rooting medium which contains IAA growth hormone and glycine betaine is used to cultivate the seedlings, so the rooting rate of cuttings and transplanting survival rate are improved, the seedling cultivation time is reduced greatly, and the propagation efficiency is improved obviously. In the invention, a microbial fertilizer, a potassium sulfate type compound fertilizer, ammonium sulfate and diammonium phosphate are used for fertilizing the blueberry, wherein the ammonium sulfate can lower the pH value of the soil, namely the ammonium sulfate provides nutrients for the blueberry for growth and improves the growing environment of the blueberry; and thus, the blueberry yield is more improved effectively.

The invention relates to a medium for culturing fruits and vegetables or cultivating straw, which is characterized in that the medium consists of materials of the following volume proportion: 35-80 percent of straw leavening, 0.2-0.5 percent of chemical fertilizer, and 19.5-64.8 percent of base material, wherein, the base material is one or more of grass carbon, perlite or vermiculite, or either grass carbon or river sand. The invention provides a manufacturing method for the medium culturing fruits and vegetables or cultivating straw, which includes: 1) fermentation of the straw; 2) proportioning of materials. The manufacturing method adds a small amount of excrement of animals and even ferments with organic material-decomposing agent; the decomposed mixture is mixed with the grass carbon and fertilizer (three-element compound fertilizer or carbamide, ordinary superphosphate, diammonium phosphate) according to certain proportion to prepare the seedling culture or cultivation medium; the growth of the fruit and vegetable seedlings are good, the cost is reduced and the dependence on mineral is reduced at the same time.

The invention relates to a method for preparing nano hydroxyapatite powder, belonging to the field of the biomedical material. The method for preparing the nano hydroxyapatite powder comprises the following steps: adding the organic polymer of polyethylene glycol to the initial reactants of calcium nitrate and diammonium phosphate solution to adjust and control the morphologies of the products of reaction; adding aqueous ammonia to adjust the pH values of the products of reaction, and making the aqueous ammonia react with the products of reaction at different water bath temperature to synthesize nano hydroxyapatite precipitate, wherein the agglomeration of the synthesized nano hydroxyapatite precipitate can be inhibited by the polyethylene glycol functioning as the dispersant; freezing and drying synthesized nano hydroxyapatite precipitate slurry to obtain dry nano hydroxyapatite powder which contains by-products of reaction and polyethylene glycol, and calcinating the dry nano hydroxyapatite powder at high temperature to remove the by-products of reaction and the polyethylene glycol which are contained in the dry nano hydroxyapatite powder to obtain the nano hydroxyapatite powder which is in the shape of the ball or the rod and in the particle size of 10-100 nm and has high yield and good dispersion. The method for preparing the nano hydroxyapatite powder is simple, needs short preparing period, causes no poison and pollution and is suitable for industrial production.

A flame retardant additive composition comprising a phosphoric acid salt selected from the group consisting of melamine phosphate, melamine pyrophosphate, melamine orthophosphate, diammonium phosphate, monoammonium phosphate, phosphoric acid amide, melamine polyphosphate, ammonium polyphosphate, polyphosphoric acid amide and combinations of two or more of the foregoing; a metal hydroxide; and an organic phosphate. The flame retardant additive is useful in a wide range of thermoplastic compositions.

The invention discloses a compound fertilizer capable of reducing cadmium content in rice with overproof cadmium and a preparation method thereof. The fertilizer is prepared from urea, ammonium chloride, ammonium sulfate, diammonium phosphate, nitrophoska, a calcium magnesium phosphate fertilizer, potassium chloride, zinc sulfate, sepiolite, ferrimganic oxide, kaolin, bentonite and power plant slags in a certain proportion. The preparation method comprises the following steps: A, preparing the sepiolite; B, preparing the ferrimganic oxide; C, preparing the kaolin; D, preparing the bentonite; and E, preparing the power plant slags. In addition, scale production is carried out by a compound fertilizer process flow namely extrusion and granulation. The compound fertilizer is characterized in that 38.5-50.5% of passivator such as sepiolite, ferrimganic oxide, calcium magnesium phosphate fertilizer, kaolin, bentonite, power plant slags and the like (wherein the sepiolite accounts for 20-32.5%) are contained; the content of the total nutrition (N+P2O5+K2O) is 25%, the soil activated cadmium in the rice with the overproof cadmium is reduced by 31.9-58.5%, rice cadmium is reduced by 28.7-51.7% (the content is less than 0.2mg / kg); and the compound fertilizer has huge popularization and application value in light-grade cadmium-polluted areas.

The invention provides a preparation method of drug and protein sustained-release alginate hybrid gel. The preparation method comprises the steps of preparing calcium alginate hydrogel, then soaking the calcium alginate hydrogel in inorganic salt solutions including trisodium phosphate, diammonium hydrogen phosphate, sodium silicate, sodium carbonate, sodium oxalate and the like at certain concentration to swell for a certain period of time, and soaking the swelled calcium alginate hydrogel into an aqueous solution of drugs and proteins with calcium ions at certain concentration for crosslinking for a period of time, thus obtaining the drug and protein sustained-release alginate hybrid gel. The calcium alginate hydrogel disclosed by the invention can be in the shape of a membrane, a microballoon, a fiber and the like. The method disclosed by the invention is simple to operate and does not adopt any poisonous and harmful solvent; the activity of the immobilized protein is high; the materials are good in biocompatibility; and the drug and protein sustained-release alginate hybrid gel is good in slow release performance, and has good application prospect in the fields of tissue engineering, controlled release, medicine and health, and the like.

The invention relates to a catalyst of supported metal phosphide, in particular to a process for preparing the catalyst of high dispersive supported metal phosphide. The catalyst is composed of two parts of active components and a carrier which can be represented by AP / Z or B2P / Z, wherein the A of the active components is Mo or W, the B of the active components is Ni or Co, and the Z of the carrier is Al2O3 or SiO2. The operation steps of the catalyst are that transient metal salt and mammonium dihydrogen phosphate are dissolved in deionized water according to the stoichiometric ratio of targeted phosphide, and simultaneously moderate hydroxy acid as chelating agent is added to get the impregnating solution for preparing supported transition metal phosphide. The porous carrier is immersed in the impregnating solution, and is rested, the procedure gains temperature and returns after the impregnating solution is dried, roasted and under the atmosphere of hydrogen gas, and finally the supported transition metal phosphide is made. The supported transition metal phosphide prepared by the preparation method has the advantages of high dispersion, simple and convenient operation, low cost, no pollution, good repeatability and easiness of large scale preparation.

The invention discloses a complex microbial inoculant for restoring petroleum-contaminated soil in loess highlands and a restoring method thereof. The microbial body of the complex microbial inoculant comprises Pseudomonas aeruginosa, Pseudomonas fulva, Acinetobacter lwoffii, Nocardioides luteus and Streptomyces flavoviridis. The invention provides a method for restoring petroleum-contaminated soil in loess highlands by using the complex microbial inoculant, which comprises the following steps of (1) carrying out pretreatment on contaminated soil; (2) degrading the contaminated soil; (3) covering a plastic film on the soil; and (4) adding water, urea, diammonium phosphate and the complex microbial inoculant. By using the method disclosed by the invention, the process is simple, the cost is low, and the degradation effect is significantly increased.

A process for preparing nano hydroxyapatite powder comprises the steps of, mixing Ca(NO3)-2-4H20 and NH4-2HPO-4 according to the mol ratio of Ca:P = 1.67-2.5:1, dissolving by charging distilled water, making the concentration of the Ca2++ ion to be 0.01-0.1 mol / L, charging aquadrate powder into the solution according the ratio of Ca(NO3)-2-4H2O : NH4-2HPO-4 = 1:5-12, conducting sound chemo synthesis through multiple frequency phonochemical generator, filtrating and washing the suspending liquid, placing the filtered material into vacuum drying oven for drying at the temperature of 80-100 deg. C, thus the nano hydroxyapatite powder can be obtained.

The invention provides selenium-rich nutrient solution, which is characterized by being prepared by the following raw materials in parts by weight: 25-28 parts of sodium selenite, 12-15 parts of ammonium sulfate, 13-15 parts of anhydrous boric acid, 15-20 parts of potassium sulfate, 5-10 parts of clay, 10-15 parts of diammonium phosphate, 2-5 parts of fulvic acid, 0.5-1 part of zinc chloride, and the like. The nutrient solution not only contains major elements required for the growth of carambola, and is rich in trace elements, organic acid and microorganism flora, but also is fed with medicament with efficacies of sterilization and prevention, so as to play a role in insect disease prevention while spraying.

The dry-land planting agent refers to a kind of droughtresistance crop's nutrient specific to the growth of the plants. The invention is composed of the following components: AU absorber with super strength, carbamide, potassium dihydrogen phosphate, ammonium dibasic phosphate, calcium nitrate, bitter salt, ammonium molybdate, zinc sulfate, manganese sulfate, boracic acid or borax, ferrous sulphate, fulvic acid potassium, disodium edta, fatty alcohol polyethenoxy ether, 6- benzyl aminopurine, melissyl alcohol, potassium naphthylacetic acid, indolebutyric acid, gibberellin, santobrite, potassium sorbate, ketotriazole, penta azole alcohol., thiram, carbendazim, acid brilliant scarlet, humic acid, bluestone, potassium permanganate, potassium chloride, polyethylene glycol, bentonite or water. The invention is featured by sopping, molding moisture, molding fertilizer, withering resistance, disinsection, sterilization, strengthening the effects of the pesticide, accelerating the burgeon of the plants, increasing roots, innocuity, no pollution and low cost.

The invention relates to an etchant composition and an etching method, wherein, the etchant composition comprises any two components of oxidants, acid and salt, and the pH value of the etchant composition is between 1 and 7. The oxidant components are selected from hydrogen peroxide, ammonium persulfate, potassium persulfate and ceric ammonium nitrate; the acid components are selected from chloric acid, perchlorate, acetic acid, nitric acid, hydrofluoric acid, sulfuric acid and oxalic acid, and the salt components are selected from ammonium fluoride, ammonium bifluoride, diammonium phosphate, ammonium phosphate, ammonium chloride and perfluorinated octyl sulfanilic acid (C8F17SO3NH4).

The invention relates to a slow controlled release diatomite fertilizer which is characterized in that 16 to 20 portions of urea, 12 to 17 portions of diammonium phosphate, 10 to 15 portions of potassium chloride and 8 to 12 portions of diatomite are put in a pulverizer to be crushed and sieved by a 80-mesh sieve and then are put in a granulator to be granulated by a rotary drum; 50 to 100ml water is added slowly and uniformly to be used as coupling agent during the granulating process; after the granulation, 100 to 120ml coating material of polyvinyl alcohol is sprayed to rotating fertilizer particles by a high-pressure spray gun uniformly in small amount; after coating, rosin and olefin are poured into the rotary drum based on the proportion of 1 to 2 to be melted and made into sealant; the temperature is kept between 70 DEG C to 80 DEG C; and finally, the coated fertilizer is poured into the rotary drum to be sealed. The invention can separate the soil from the fertilizer, avoids the direct contact of the soil and the fertilizer and controls the release of nutrient; the slow controlled release diatomite fertilizer has the functions of preserving moisture and fertility, prolonging the fertilizer effect by slow release and improving the soil; and the slow controlled release diatomite fertilizer causes no pollution to the soil.

The invention relates to a condensate bacillus feed additive and a preparation method, belonging to the technical field of microbial feed additives. The additive uses one or several of the fish meal, soybean meal, cottonseed meal, urea, ammonium sulfate, diammonium hydrogen phosphate, soybean peptone and yeast extract as the nitrogen source, and also takes one or several of the glucose, lactose, starch, cane sugar, maize flour and bran as the carbon source for fermentation; the number of viable bacteria reaches more than 1 multiplying 109 CFU / ml; after the additive is further concentrated and dried or directly adsorbed to the carrier, bacillus powder is obtained through spray-drying, and the number of viable bacteria reaches more than 1 multiplying 1010 CFU / g. The novel bacillus product produced with the submerged liquid fermentation method provided in the invention is free from toxic side effects, drug resistance and residue; the product can endure processing, intestinal habitat and storage.

The invention relates to a waterborne super thin steel structure fireproof coating and a preparation method Which is evidently different from the solvent-typed expansion foam fireproof coating, the invention solves the problems of environmental pollution, resource waste and high cost in prior solvent-typed super thin steel structure fireproof coating. The invention takes water as solvent and comprises the components with certain weight portions: water of 5-25 weight portions, waterborne resin or mixed waterborne resin of 10-30 weight portions, waterborne expansion additive of 25-50 weight portions, pentaerythritol or dipentaerythritol or starch of 5-15 weight portions, one or two components among urea, melamine and dicyano diammonium with 6-15 weight portions, ammonium dihydrogen phosphate, ammonium polyphoste or diammonium phosphate of 15-30 weight portions, expansion regulator of 3-18 weight portions, titanium dioxide of 3-12 weight portions, dispersion agent of 0.1-1.0 weight portions.

The invention discloses a nursery substrate and a method for manufacturing the same. The main compositions in percentage by volume of the nursery substrate are 0 to 20 percent of grass carbon, 40 to 60 percent of peat, 20 to 35 percent of vermiculite and 10 to 15 percent of perlite; the compositions are mixed and taken as a base number; moreover, 1.5 to 2.0kilograms of diammonium phosphate, 0.2 to 0.5kilograms of microorganism organic fertilizer and 0.15 to 0.3kilograms of microelement addition agent are added in each cubic meter of the mixture. According to the proportion, grass carbon, peat, vermiculite, perlite, diammonium phosphate, microorganism organic fertilizer and microelement addition agent are put in an agitator after high-temperature sterilization for stirring and sieving, thereby obtaining the nursery substrate. The nursery substrate has the advantages of simple operation, low cost, long fertilizer efficiency and strong seedling, and is particularly suitable for being popularized and used in factory breeding for melon, fruit and vegetable and root stock grafted seedling.

The fire mitigation and moderating agent includes by weight one percent (1%) to five percent (5%) potassium hydroxide, two percent (2%) to seven percent (7%) citric acid, four percent (4%) to thirty six percent (36%) diammonium phosphate, four percent (4%) to twenty percent (20%) carbamide, and point five percent (0.5%) to four percent (4%) surface tension reducing component which comprises by weight twenty percent (20%) to fifty five percent (55%) octyldimethylamine oxide, fifteen percent (15%) to thirty five percent (35%) modified polyether organosiloxane, five percent (5%) to twenty percent (20%) sugar based surfactant, three percent (3%) to twelve percent (12%) 1,4-Bis(ethylhexyl)sodium sulfosuccinate, point zero one percent (0.01%) to point one percent (0.1%) anionic phosphate fluorosurfactant, and point one percent (0.1%) to two point five percent (2.5%) polymer adhesive mixture. The polymer adhesive mixture comprises seventy percent (70%) water and thirty percent (30%) polymer adhesive.

The invention relates to a farmland heavy metal contaminated soil compound modifying agent and a preparation method and an application method thereof. The farmland heavy metal contaminated soil compound modifying agent comprises, by weight, 20-40% of activated decomposed coal, 15-25% of charcoal, 10-25% of sepiolite, 10-20% of calcium magnesium phosphate fertilizer and 10-20% of diammonium phosphate, wherein the activated decomposed coal is obtained by activating ammonium bicarbonate and ultrasonic waves, and the sepiolite is obtained by pyrolysis at the temperature of 600-800 DEG C. The farmland heavy metal contaminated soil compound modifying agent is low in cost and simple in formula and mainly used for passivating heavy metal of Cd, Cu, Pb and Zn in soil, the soil polluted by the heavy metal can be effectively repaired, the sustainable production capacity of the soil can be ensured, and the sustainable soil utilization is achieved.

The invention provides a biological organic fertilizer prepared by aerobic fermentation of a biogas residue and a preparation method thereof. The preparation method comprises the steps: mixing the biogas residue and a swelling agent to form a fermentation raw material, inoculating a compound microbial agent in the fermentation raw material, uniformly mixing for fermenting, and adding urea, diammonium phosphate, a potassium chloride inorganic salt, brown nitrogen-fixing bacteria, mycorrhiza fungi, silicate bacteria, photosynthetic bacteria acetic bacteria, bifidobacterium, and saccharomycetes after the fermentation is completed to prepare the biological organic fertilizer, wherein the compound microbial agent comprises strains of bacillus, pseudomonas, staphylococcus, streptomyces, penicillium, aspergillus and trichoderma. The compound microbial agent prepared by using the biological organic fertilizer has a pertinence to aerobic fermentation of the biogas residue, and is capable of effectively increasing the fermentation rate of the biogas residue, shortening the fermentation time and realizing high-additional value production, innocent treatment and recycling of the biogas residue; and the problem of resources and environment of villages and small towns is solved, and the rapid development of construction of new countryside and towns and cities can be promoted.

The remixed organic-inorganic fertilizer with active compost as basic material is produced with the following matters: fermented active compost in 30-50 weight portions, urea 10-30 weight portions, ammonium or diammonium phosphate 10-20 weight portions, potassium chloride or potassium sulfate 15-25 weight portions, and adhesive 0.6-15 weight portions. The active compost is prepared through crushing crop stalk, mixing the stalk with animal excrement in such ratio as to result in C / N ratio of 20-35, regulating water content to 60 %, fermentation, stoving and crushing. The preparation process of the remixed organic-inorganic fertilizer is also disclosed. The present invention has obvious environment and economic utility.

The invention relates to a charcoal-based rice seedling substrate and a preparation method thereof. The charcoal-based rice seedling substrate contains biomass, namely, grain charcoal, grass charcoal and wood vinegar, and can further comprise perlite and other fertilizers such as diammonium phosphate, potassium sulfate, zinc sulfate and monopotassium phosphate. The charcoal-based rice seedling substrate can be widely applied to rice seedling cultivation.

The invention discloses fermented liquid pasty fertilizer which relates to the technology of utilizing fermented liquid for producing pasty and organic compound fertilizer, in particular to a method mixing fermented liquid of livestock manure with humic acid raw materials to prepare the pasty fertilizer and the application of the method, belonging to the technical field of novel organic fertilizer and the cyclic utilization of the resource of agricultural wastes. The pasty fertilizer includes the main component of fermented liquid, and is additionally provided with carbamide, diammonium phosphate, lemery, aminated wood coal, thickening agent and other additives; and the carbamide, the diammonium phosphate, the emery, the aminated wood coal, the thickening agent and the other additives are added to and uniformly mixed and stirred with the fermented liquid, and the mixture is pulverized to form a pasty shape. The invention which utilizes the fermented liquid to prepare the pasty fertilizer turns the wastes into resources, the preparation method is easy, and required equipment is simple, thereby the invention is easy to be easily popularized and applied to the fertilizer industry. The pasty fertilizer has the advantages of favorable dissolvability, full nutrition and obvious effect of yield and quality improvement and can be widely applied to vegetables, fruits, foodstuffs, forests and various cash crops.

The invention relates to an organic-inorganic compound fertilizer for grapes and a method for preparing the same. The compound fertilizer consists of the following raw materials in part by weight: 50 to 60 parts of fermentation organic fertilizer, 14 to 18 parts of urea, 5 to 10 parts of diammonium phosphate, 15 to 20 parts of potassium potassium sulfate, 2 to 4 parts of magnesium sulfate, 0.5 to 1.0 part of zinc sulfate, 0.2 to 0.5 part of boric acid, wherein the fermentation organic fertilizer is obtained by pilling 60 to 70 parts of edible fungi dreg, 15 to 20 parts of cake and 10 to 15 parts of microorganism fermentation microbial agent for fermentation and then drying the product of the fermentation until the water content is 25 to 35 percent. The compound fertilizer has the advantages of reasonable nutrient ratios and high grape quality and can improve the soil fertility by adopting the organic-inorganic combination.

The invention discloses an alkaline fertilizer composed of the following components in percentage by weight: 31-99.4% of macroelements, 0.5-50% of medium elements, 0.1-15% of microelements and 0-50% of synergic components, wherein the macroelements include two and even more selected from urea, diammonium phosphate, ammonium polyphosphate, dipotassium phosphate, tripotassium phosphate, potassium pyrophosphate, potassium tripolyphosphate, potassium nitrate, potassium carbonate, potassium sulfate, potassium chloride, potassium formate, potassium silicate and potassium hydroxide; the medium elements are one or more selected from calcium nitrate, calcium chloride, magnesium chloride, magnesium sulfate, EDTA calcium and EDTA magnesium; the microelements are one or more selected from ferrous sulfate, zinc sulfate, manganese sulfate, copper sulfate or an EDTA chelate of iron, zinc, manganese and copper, EDDHA iron, borax, disodium octaborate tetrahydrate and sodium molybdate; and the synergic components include one or more selected from sodium humate, potassium humate, sodium fulvate, potassium fulvate, sodium alginate, potassium alginate and a plant growth regulator.

The invention relates to an organic and inorganic compound fertilizer specially used for tea trees and a preparation method thereof. The organic and inorganic compound fertilizer is prepared from the following raw materials by weight portion: 40-70 portions of fermented organic fertilizer, 3-15 portions of carbamide, 10-30 portions of ammonium sulfate, 5-25 portions of diammonium phosphate and 5-15 portions of potassium sulphate, wherein the fermented organic fertilizer is prepared by taking 45-65 portions of furfural residues, 20-35 portions of fuming slag and 10-20 portions of weathered coal as raw materials and adding 1-2 portions of microbial fermentation agent EM compound microbial agents to be accumulated and fermented and then dried until the moisture content is 25-35 percent. The organic and inorganic compound fertilizer specially used for the tea trees has long-time fertilizer effect, thereby increasing the fertilizing times; and in addition, the organic and inorganic compound fertilizer specially used for the tea trees has reasonable nutrient proportion, thereby enhancing the tea-leaf yield.

The invention relates to a water and fertilizer integrated fertilizer special for winter wheat, and an application method for the water and fertilizer integrated fertilizer. The water and fertilizer integrated fertilizer is prepared by uniformly mixing the following raw materials in part by weight: 40 to 50 parts of urea, 20 to 32 parts of diammonium phosphate, 12 to 18 parts of potassium chloride, 6 to 12 parts of potassium humate, 1 to 2 parts of borax, 1 to 2 parts of zinc sulfate, 0.5 to 1 part of copper sulfate, 0.5 to 1 part of ferrous sulfate, 0.5 to 1 part of manganese sulfate and 0.3to 0.5 part of amino acid. Water and fertilizer are supplied to wheat in a spray irrigation mode, a small amount of fertilizer is applied for multiple times, the fertilizer application amount, the irrigation amount and a water and fertilizer requirement rule of the winter wheat are basically matched, the continuous nutrient requirement of the winter wheat in a long growth period can be met, the ear rate is improved, and the obvious production and income increasing effect can be achieved. By the invention, boundaries of furrows and ridges in a field can be broken, and the land utilization rate is improved by over 5 percent.

The present invention discloses a method for preparing hydroxyapatite hollow microsphere. Said method includes the following steps: using tetrahydrate calcium nitrate and ammonium hydrogen phosphate as raw material, adopting chemical precipitation method to prepare hydroxyapatite slurry, then diluting said hydroxyapatite slurry by using distilled water, adding ammonium hydrogen carbonate as additive, uniformly stirring them, spray drying, making following heat treatment so as to obtain the hydroxyapatite hollow microsphere formed from nano grains.