49results about How to "Improve physical and chemical indicators" patented technology

The invention discloses an efficient green micro-crystallized mineral-biological compound fertilizer and a production method thereof. The compound fertilizer comprises the following components in parts by mass: 7-9 parts of N, 7-9 parts of P2O5, 7-9 parts of K2O, 25-30 parts of organic matters, 8-12 parts of humic acid, 3-6 parts of amino acid and 15-20 parts of chemical elements such as calcium,silicon, magnesium, selenium, molybdenum, boron and zinc, as well as not less than 0.02 billion / kg of available active bacteria. The efficient green micro-crystallized mineral-biological compound fertilizer has the beneficial effects of being capable of adapting to acidic-alkaline soil and neutral soil in various regions, improving the soil, enhancing the adsorption ability of the soil on nutrients, preventing nitrogen and potassium from being washed away by water due to a large amount of rainfall, reducing formation of insoluble phosphate and improving fertility of the soil; and in addition,nitrogen, phosphorus and potassium in the original soil can be activated to be absorbed by crops by virtue of microelements contained in the fertilizer, and the supply capability of the deep soil nutrients can be enhanced, thus the physiochemical indexes and biological environment of the soil can be improved in case of long-term application, hardened soil can be reduced, and the quality of crops can be obviously improved.

There is a kind of dian-olive juice wine. The inventino uses mild fruit dia-olive which exists specially in yunnan as main material, it is produced through processes of extracting, sterilizing, filtering, distributing, fermenting, low temperature aging etc. The invention also can confect the purified dian-olive juice into dew-wine. Aiming at the technology difficulty that the content of tannin in dian-olive juice and that the Ph value is 1-2, the invention uses technique measure such as acidproof yeast cluster and ferment temperature control etc. It assorts with growth of dian-olive natural yeast cluster effectively, resists growth of harmful yeast and mixed germ, these play a crucial significance to color, taste feeling, physical and chemical sanitation index of the product.

A bone meal amino acid organic fertilizer relates to an agricultural fertilizer with animal bone meal and protein as raw materials, prepared after high-temperature sterilization and addition of ingredients. The total nutrients of nitrogen, phosphorus and potassium (N+P2O5+K2O) is more than or equal to 8 percent; the content of organic substances are more than or equal to 30 percent, and amino acid of 2 to 15 percent. The high-temperature sterilization technology is used for processing of innocuity; the fertilizer efficiency transformation is rapid; the product has no pollution or toxicity, and suits requirements of environmental protection; thus the product is a preferential fertilizer for development of green agriculture. The product can improve physical and chemical indicators of soil and the biological environment, reduce soil compaction, and can be used for a plurality of agricultural crops such as vegetables, melons, cotton, grain, rapeseed, flowers and so on; after the product is used, the commodity rate of agricultural products is increased; the agricultural products have good color, good taste, and significantly increased nutrients; the product can significantly improve the quality of crops.

The invention relates to a wall-flow honeycomb ceramic filter, which combines a cordierite honeycomb ceramics material and a special pore-forming agent. Raw materials of a blank of the filter comprise the following components, mass portions and grain diameters: kaolin is 35 to 45 portions, and the average grain diameter is less than or equal to 5 mu m; talcum is 20 to 30 portions, and the average grain diameter is 15 mu m; alpha-alumina is 4 to 9 portions, and the average grain diameter is less than or equal to 2 mu m; the pore-forming agent consisting of carbon granules or / and organic polymeric particles is 5 to 15 portions, and the average grain diameter is 10 to 20 mu m; and a bonding agent is 3 to 7 portions. A method for preparing the wall-flow honeycomb ceramic filter comprises the following steps: evenly mixing the components and 20 to 30 portions of water to prepare a blank; completing the conversion from the blank to plastic mud after performing vacuum degassing for 2 to 3 times; staling the plastic mud for 24+ / -8 hours, and squeezing out the plastic mud through a mould of an extruder, wherein the density of mould holes is 100 to 250 holes per square inch; cutting the mud after extrusion into a wet blank with certain length; and performing microwave drying on the wet blank to obtain a dry blank, performing cross hole blocking and drying on the dry blank, and finally performing a sintering working procedure on the dry blank to manufacture a product.

The invention discloses an impurity removing process for enhancing quality of silicon carbide fine micro powder and relates to an impurity removing method of silicon carbide micro powder. The process comprises the following steps: firstly, adding the silicon carbide fine micro powder into deionized water to prepare 30% slurry, and adding a foaming agent and polyoxyethylene which account for 0.01% of the total weight of the slurry; then, feeding the slurry to a flotation column to float and decarbonize; then, feeding the floated slurry to a wet magnetic separator for magnetic separation to remove iron; repeating the above operations till foam in the floatation column changes from being deep to being light and is off-white and stopping flotation and magnetic separation process; then, diluting the concentration of the slurry discharged from the wet magnetic separator, and adding a surfactant; then, feeding to a cyclone grading system to remove particles which are less than 5.5 microns; and then dehydrating and drying to obtain high quality silicon carbide fine micro powder with Fe2O3 less than or equal to 0.4%, free carbon less than or equal to 0.3% and particle content less than or equal to 3.5%. The silicon carbide fine micro powder disclosed by the invention is stable in quality, high in cleanliness and simple in production process, and the treatment time is greatly shortened.

The invention relates to a preparation method for table vinegar and particularly relates to a preparation method for virgin pulp aromatic vinegar. The preparation method comprises the following steps: (1) preparing virgin pulp non-smoked fermented grain vinegar; (2) preparing virgin pulp smoked and fermented vinegar; (3) preparing virgin aromatic vinegar; and (4) preparing the virgin pulp aromatic vinegar: blending 35-45 parts of the virgin pulp non-smoked fermented grain vinegar, 25-30 parts of the virgin pulp smoked and fermented vinegar and 30-35 parts of the virgin pulp aromatic vinegar; and homogenizing and carrying out high-temperature instant sterilization, and filling to obtain the virgin pulp aromatic vinegar. The preparation method for the virgin pulp aromatic vinegar is simple in process operation; the production period is greatly shortened and the production efficiency is obviously improved; the output of the high-quality table vinegar in unit time is greatly improved and the popularization and application prospect is very wide.

A method of producing adiabatic fireproof bricks containing silicon. The main component is silex, the raw material also includes expanded perlite. The weight ratio of each component is sliex 70-90, expanded perlite 10-30. The method is characterized in adding expanded perlite into the raw material to replace flammable adding material in the prior raw material. Thus, it could overcome drawbacks inthe current adiabatic fireproof bricks containing silicon. The added expanded perlite is a light material, the content of SiO2 is more than 60%, the main chemical component belongs to silicon and is the glass phrase. In the preparation course, expanded perlite combined with phosphoric quartz could form uniform fine air holes. By replacing flammable adding material by expanded perlite, the invention could save cost, and improve the rate of finished products.

The invention discloses a preparation method for a double-sided light aluminum foil. The preparation method comprises the following steps that (1) cast-rolling is performed, wherein an aluminum alloymaterial and an aluminum ingot are put into a melting furnace for melting, after standing is performed through a standing furnace, a molten liquid is filtered, and a cast-rolled plate is obtained after multiple times of cast-rolling is performed by a cast-rolling machine; (2) cold rolling is performed, wherein the cast-rolled plate is cooled to room temperature, multiple times of cold pressing isperformed by a cold press, and then multiple times of annealing treatment is performed to obtain an aluminum foil stock; (3) an aluminum foil working procedure is performed, wherein the aluminum foilstock undergoes five passes of rolling working procedures to obtain a finished aluminum foil, the first pass of the rolling working procedure to the third time of the rolling working procedure are rough rolling, the thickness of the obtained aluminum foil is 0.03 mm, the fourth pass of the rolling working procedure is intermediate rolling, the thickness of the obtained aluminum foil is 0.014 mm, the fifth pass of rolling working procedure is finish rolling, and the aluminum foil with the thickness of 0.009 mm is obtained. According to the method, the distribution of reduction pass of an aluminum foil rolling working procedure is adjusted again, the pass reduction rate of the third pass is properly improved, the pass reduction rate of the fifth pass, namely, the pass reduction rate of the final pass is reduced, so that the reduction process speed is reduced, and the thickness of the product is reduced easier.

The invention discloses a high-quality high-aluminum runner brick as well as a preparation method and an application thereof. According to the high-quality high-aluminum runner brick, first-grade alumina is taken as aggregate, a proper amount of naturally sintered mullite and binding clay are added to a powdery matrix material, and liquid silica sol is taken as a binding agent. According to the high-quality high-aluminum runner brick, due to the good performance of silica sol, the firing temperature of a product is effectively reduced, the interval range of the firing temperature is increased, and additionally, the physical and chemical indexes of the prepared high-aluminum rubber brick product are superior to those of rubber bricks produced with a conventional binding agent; ingredients of poured quality steel are uniform and stable if the high-quality high-aluminum runner brick is used in mold casting and steel pouring sites, the cleanness is high, and requirements of users are effectively met.

The invention belongs to the field of rubber chemicals and discloses a rubber-metal bonding enhancer for a steel wire radial tyre. The enhancer is prepared from four kinds of metal salts of cobalt, nickel, copper and zinc; and the proportion of the metal salts by metal molar mass: cobalt: nickel: copper: zinc is (50% to 70%): (20% to 40%): (6% to 10%): (2% to 4%). The preparation method of the bonding enhancer comprises the steps of: using the four kinds of metal salts as starting materials to sequentially prepare alkali carbonate metal composite salt by a temperature gradient method and a concentration step method, prepare an intermediate by a continuous dehydration method and prepare low cobalt boroacylate metal composite salt by a boroacylate replacement reaction to obtain the bonding enhancer. In the invention, the proportion of the cobalt is regulated to 50% to 70% from 100% in a traditional technology; and the consumption of precious metal cobalt is reduced; the cost is reduced by 10% to 20%. The physical and chemical indexes and utilization property of the product of the invention are equivalent to those of a boroacylate cobalt product; and the drawing force and retention rate of an aged product are better than those of the boroacylate cobalt product.

The invention discloses a novel earthworm enzyme soil repairing fertilizer, which includes an original fertilizer and 10-15 parts by weight of earthworm enzyme, wherein the original fertilizer comprises following substances, by mass, 1.95-3.5 parts of nitrogen, 2.2-2.9 parts of phosphorus, 1.96-2.2 parts of potassium, 25-38 parts of organic substances, 21-40 parts of humus and 3.60-4.2 parts of calcium. An earthworm enzyme bacterial source body is comprehensive in nutrient and is rich in organic substances, humus and microorganism community. The fertilizer can improve physical performances of soil, can loosen clay and coagulate sand, can promote air ventilation in soil, and can accelerate reproduction of microorganism and help plants to absorb the nutrients.

The invention discloses unsaturated polyester putty for automobile sheetmetal. Main agent of the unsaturated polyester putty comprises, by weight, 100 parts of unsaturated polyester resin, 5-7 parts of methyl hydroxyethyl toluidine, 1-2 parts of styrene, 0.8-1.2 part of polytetrafluoroethylene wax, 0.5-1 part of hydroquinone, 1-2 parts of gaseous SiO2, 4-6 parts of titanium dioxide, 1-2 parts of hollow glass beads, 5-8 parts of pulvistalci and 5-6 parts of expansion ultrafine powder. Initiator of the unsaturated polyester putty comprises, by weight, 60-70 parts of benzoyl peroxide, 25-35 parts of dibutyl phthalate, and 2-8 parts of silicon dioxide.

The invention relates to a safe-and-efficient microbial organic fertilizer and a preparing method thereof. The microbial organic fertilizer is prepared from, by weight, 40-45 parts of layer-hen manure, 10-15 parts of broiler padding, 10-15 parts of distillers' grain, 10-15 parts of rice hulls, 30-40 parts of a first mixture and 0.2-0.5 part of mixed fungicide. The preparing method includes the steps that all the raw materials are mixed evenly, and a material with the water content of 55% is obtained; the material is fermented, and when the temperature of the material is increased to 75 DEG C,aeration is carried out; when the temperature of the fermented material is reduced to 40 DEG C, and the water content is reduced to 25%, a material is discharged; then screening and deironing are carried out, prilling is carried out, and the microbial organic fertilizer is obtained. By means of the safe-and-efficient microbial organic fertilizer, waste agricultural resources and livestock manure can be fully used, and through the later added functional bacteria, the organic fertilizer capable of pertinently promoting fertilizer absorption and utilization of crops and effectively killing soil diseases and pests is obtained.

The invention discloses a soybean paste brewing process which comprises the following steps: (1) dividing soybeans into two parts, namely soybeans 1 and soybeans 2; (2) cooking soybeans 1, crushing, cooling, inoculating yeast seed for starter propagation, adding salt and a small amount of water, and performing sun-curing fermentation to obtain a semi-finished product of soy sauce mash 1; (3) steaming and cooking soybeans 2, cooling, adding flour, uniformly mixing, inoculating yeast seed for starter propagation, adding saline water, and carrying out sun-curing fermentation to obtain a semi-finished product of soy sauce mash 2; (4) uniformly mixing the semi-finished soy sauce mash 1 and the semi-finished soy sauce mash 2 with saline water, and fermenting to obtain soy sauce mash 3; and (5) adding a flavoring agent into the soy sauce mash 3 for blending, boiling for 10-40 minutes, sterilizing, cooling and filling to obtain the soybean paste. According to the brewing process, the quality, enzyme activity and decomposition degree of finished koji are improved, the fermentation time is short, and the utilization rate of raw materials is high; compared with the traditional technology, the physicochemical indexes of the obtained soybean paste blank are obviously improved, and the soybean paste is red and strong in color, rich in fragrance and prominent in delicate flavor and mellow taste.

The invention discloses a production method of isopropyl myristate, which includes four steps. Firstly, myristic acid (tetradecanoic acid) is added with isopropanol and catalyzer TiO2 for esterification; secondly, the esterified product is dealcoholized; thirdly, the catalyzer is recovered; fourthly, the recovered catalyzer product is rectified, and therefore the isopropyl myristate of the invention is produced. The isopropyl myristate of the invention has the advantages of innocuity, no causticity, easy emulsification, easy degradation, environmental protection and safe storage and transporation. The isopropyl myristate of the invention can not only be applied to cosmetic and daily chemical industries but also be used as the solvent of pyrethrins insecticides.

The invention provides a compact clay brick for a blast furnace, which comprises a substrate, wherein the substrate comprises a central base layer and a compact layer arranged on the upper surface of the base layer; a micro-porous insulating layer is arranged on the lower surface of the base layer; the thickness of the micro-porous insulating layer is 1 / 3 of the thickness of the base layer; the thickness of the compact layer is 1 / 5 of the thickness of the base layer; blind holes of which the hole diameters are 10-15mm are uniformly distributed in the surface of the base layer; and cement paste is poured in the blind holes. The compact clay brick is formed at high pressure and high temperature and is firm in structure, low in cost, resistant to high temperature and good in thermal stability.

The invention relates to a method for making a thermostatic fermented multi-flavor olio. The method comprises the following steps: a, pretreatment of raw materials; b, fresh keeping with circulating brine; c, tank sealing; d, shape changing; e, sorting; f, desalting; g, dewatering; h, preparation of sauce; i, thermostatic fermentation; j, preparation of composite sauce; and k, sterilization and packing. The method has the beneficial effects: 1, the thermostatic fermentation achieves a good regulating effect on the stability of a product fermentation period; 2, by using the sauce squeezed from sweet flour paste with a fermentation period of more than 20 days, various physicochemical indexes are high and the production cost is reduced; 3, low-temperature fermentation is adopted in the thermostatic fermentation, so that the activity of harmful bacteria is inhibited to a certain extent, the quality of the product is stabilized, the consumption of salt is reduced and the olio is more favorable for health; and 4, the thermostatic fermentation is carried out in an air-conditioning room where an ultraviolet sterilization lamp and an ozone generator are installed, so that the production space is clean and the safety of food is ensured.

The invention discloses a production process of an autoclaved aerated concrete slab with a high superior product rate, and belongs to the technical field of building material processing and production. The autoclaved aerated concrete slab is prepared from the following raw materials in parts by mass: 49-52 parts of silica sand, 3.5-5 parts of gypsum, 18-21 parts of cement, 9-12 parts of lime and water, and the preparation stage, the pouring molding stage, the demolding cutting stage and the slotting steam curing stage are subjected to process optimization respectively, so that the problem thatthe superior product rate is relatively low in the process of producing the autoclaved aerated concrete slab in the current process is effectively solved.

The invention discloses a preparation method of a novel fireproof clay brick, wherein the preparation method includes the steps: pretreating a flint clay raw material, grading and screening into coarse particles and fine particles; putting the coarse particles in a calcination shaft kiln and calcining; mixing the flint clay fine particles with soft clay evenly, and co-grinding into mixed clay finepowder; carrying out crushing treatment of the calcined flint clay, and grading to obtain flint clay clinker particles and flint clay clinker fine powder; and carrying out mud mixing of the flint clay clinker particles, the flint clay clinker fine power and the mixed clay fine powder, and carrying out forming, drying and sintering processes to obtain the finished product. The preparation method has the beneficial effects that the preparation method of the fireproof brick adopts mixed clay fine powder with the flint clay clinker particles and the fine powder for preparation, significantly improves the utilization ratio of the raw materials, realizes waste utilization and reduces the production cost. The quality and physical and chemical indexes of the prepared finished fireproof brick arenot reduced but greatly improved. The high temperature indexes are significantly improved, and the service life is significantly enhanced.

The invention relates to the technical field of vinegar, in particular to health-preserving vinegar and a preparation method thereof. The health-preserving vinegar has the advantages that traditional Chinese medicines, such as honeysuckle flower, pomegranate bark, cortex eucommiae, Chinese angelica, safflower, sargentgloryvine stem, fragrant citrus pericarp, vervain and the like, are reasonably proportioned, then vinegar is added for immersion, so that the traditional Chinese medicines are immersed in the vinegar for realizing fermentation, therefore the taste is improved, and the prepared health-preserving vinegar has the effects of reducing blood fat, reducing blood pressure, reducing cholesterol, regulating blood sugar and softening blood vessels; under the mutually synergistic effect of all traditional Chinese medicine components, a prevention and treatment effect to cardiovascular and cerebrovascular diseases, such as coronary heart disease, cerebral thrombosis and the like, is achieved, and the effects of promoting digestion, improving appetite, enhancing metabolism and improving human immunity can be achieved.

The invention discloses a salmon processing method. The salmon processing method comprises the following steps: Atlantic salmon is selected as a salmon raw material, salt accounting for 25% of the mass of salmon meat is used as a pickling raw material to pickle the salmon, the salt is formed by mixing 70% of sodium chloride and 30% of potassium chloride, and the salmon is fried in air at 140 DEG C for 5 minutes to obtain a finished product. By optimizing the salmon raw material, the pickling raw material, the pickling method and the air frying method, the chromaticity, the health degree, the nutrition degree and the eating experience of salmon can be effectively improved, and softening and loosening of salmon during processing are relieved.

The invention discloses a production method of isopropyl myristate, which includes four steps. Firstly, myristic acid (tetradecanoic acid) is added with isopropanol and catalyzer TiO2 for esterification; secondly, the esterified product is dealcoholized; thirdly, the catalyzer is recovered; fourthly, the recovered catalyzer product is rectified, and therefore the isopropyl myristate of the invention is produced. The isopropyl myristate of the invention has the advantages of innocuity, no causticity, easy emulsification, easy degradation, environmental protection and safe storage and transporation. The isopropyl myristate of the invention can not only be applied to cosmetic and daily chemical industries but also be used as the solvent of pyrethrins insecticides.

The invention discloses a compound enzyme preparation for oil extraction. The compound enzyme preparation comprises 1 to 3 parts of neutral protease, 1 to 3 parts of alkaline protease, 0.1 to 0.3 partof flavor enzyme, 0.1 to 0.3 part of collagenase and 1 to 3 parts of a carrier in parts by weight. Furthermore, the invention discloses a technological method of the compound enzyme preparation for the oil extraction. The method comprises the following steps: controlling pH to be 7.5 to 8.5, the enzymolysis temperature to be 52 to 65 DEG C, the ratio of materials to liquid to be (2:1) to (4:1), the enzymolysis time to be 2 to 4 hours, and the additive amount to be 0 .1% to 0.5%, thereby being capable of achieving optimum extraction process conditions. The invention has the following technicaleffects: 1) using an enzymolysis method to achieve the purpose of large-scale extraction of oil in slaughtered scraps; 2) using the compound enzyme preparation to extract the oil, thereby being capable of improving the oil extraction rate and oil extraction quality of the slaughtered scraps; 3) precipitating and spray-drying extracted enzymatic hydrolysate and then preparing into high-protein feed, thereby realizing resource utilization and further improving culture benefits.

The invention discloses a mung bean protein peptide preparation method, which belongs to the technical field of protein peptide processing, and comprises the following steps: (1) conditioning protein emulsion; (2) conducting primary hydrolysis; (3) conducting protease hydrolysis; (4) conducting centrifugal separation; (5) carrying out high-speed separation on a liquid phase, and carrying out secondary hydrolysis on a solid phase; (6) carrying out protease inactivation; (7) carrying out centrifugal separation; (8) carrying out high-speed separation on the liquid phase, and carrying out third decomposition on the solid phase; (9) carrying out protease inactivation; (10) performing centrifugal separation, removing by-products from the solid phase, and performing high-speed separation on the liquid phase; (11) performing membrane separation; (12) performing membrane concentration; and (13) drying to obtain a mung bean protein peptide finished product. According to the method, the peptide conversion rate of the mung bean protein is increased through fractional hydrolysis, ultrafiltration membrane separation and nanofiltration membrane concentration, the peptide content of a product is stabilized, the proportion of small molecule peptides less than 500d is increased, the peptide activity is improved, and the evaporation energy consumption is reduced.

The invention discloses a graphene asphalt additive which is composed of the following components: carboxylated graphene oxide, gamma-(2,3-epoxypropoxy)propyltrimethoxysilane, alkyl glycoside, polyvinyl alcohol, borate, polymethyl methacrylate, a styrene block copolymer, polyurethane and waste rubber powder. The invention also discloses a preparation method of the graphene additive. According to the additive disclosed by the invention, on the basis of an existing asphalt production process, various physicochemical indexes of asphalt can be improved in a direct adding manner.

A methanol gasoline additive is composed of the following raw materials in parts by weight: 40 parts of gasoline, 10 parts of methanol, 5 parts of ethanol, 5 parts of isobutanol, 5 parts of dimethyl ether, 20 parts of corrosion inhibitor, and 15 parts of antiknock. The provided additive is added into an oil tank before oil is added, and the addition amount of the additive is 1% of the weight of the added oil. The additive has the advantages of easily-available raw materials, simple technology, and reasonable formula, and is capable of greatly improving the physical and chemical properties and using performances of gasoline. After the addition of the additive, the methanol and gasoline can be dissolved to each other, the generated methanol gasoline can be fully combusted, the power generated by the combustion is large, and the methanol gasoline can be directly used in automobiles that use gasoline at the present.

The invention belongs to the technical field of additives for polyethylene, and particularly relates to a novel composite additive for tubular high-pressure polyethylene and a preparation method of the novel composite additive. The novel composite additive for tubular high-pressure polyethylene is prepared from the following raw materials in parts by weight: 50 to 60 parts of LDPE resin, 10 to 14 parts of silicon dioxide, 9 to 15 parts of diatomite, 12 to 17 parts of erucyl amide, 1 to 2 parts of oleamide, 7 to 11 parts of antioxidant and 7 to 9 parts of monostearin. The novel composite additive for tubular high-pressure polyethylene is easy to mix with polyethylene, good in dispersity, simple to operate, low in addition amount and more beneficial to environment-friendly production, and the opening performance, the smoothness and the oxidation resistance of the produced polyethylene raw material can be further improved; and the indexes such as fisheye, stripe, density, haze, fracture stress and tensile fracture nominal strain of the tubular high-pressure polyethylene product can be improved to different degrees.

The invention discloses a yeast coating method. The method is characterized in that yeast bases with the humidity being not lower than 38.5% are placed into a yeast room with the humidity being not lower than 70%; the yeast bases are horizontally placed on a yeast rack of the yeast room, yeast powder is spread for inoculation, and wet straw grids are used to cover the yeast bases in an enclosed manner; water is sprinkled for moist keeping and cooling, the temperature of the yeast bases slowly rises, water is sprinkled to the periphery of the yeast rack and door and window openness is controlled at the same time to allow the humidity of the yeast room to be not lower than 80% when the temperature of the yeast bases rises to 28 DEG C, and the temperature of the yeast bases is kept between 28-32 DEG C for at least 6 hours to complete yeast coating. The yeast coating method has the advantages that the method is convenient and effective and simple to operate, a coat layer can effectively forms on the surfaces of the yeast bases, contaminating microorganisms cannot easily invade into the yeast bases during the maturing process of the yeast bases, yeast fragrance and purity are increased, increasing of various physical and chemical indexes of mature yeast is promoted, and yeast quality and wine base quality are increased.

The invention relates to a fertilizer with high contents of phosphorus and potassium. The fertilizer is prepared from a phosphorus-containing compound and a potassium-containing compound, wherein the content of phosphorus in the fertilizer is 40 to 60% in terms of phosphorus pentoxide, and the content of potassium in the fertilizer is 40 to 60% in terms of an oxidizing agent. According to the invention, a non-conventional formula is employed to prepare the nitrogen-free fertilizer with excellent effect and high contents of phosphorus and potassium; the fertilizer can effectively control the growth of crops in an early stage and promote seedling hardening, rooting and blossom of the crops; in the later stage of the growth of the crops, the fertilizer can better promote expanding and coloring of fruit and accumulation of mesome substances in fruit and promote generation of growth activity substances, so the utilization rates of macroelement, medium elements and trace elements in crops can be substantially increased, and yield increase of the crops is realized; and the fertilizer is especially applicable to plants which do not need nitrogen in the whole growing period but have higher demands for phosphorus and potassium.