204results about How to "Reduce hardening" patented technology

The invention discloses a hot-rolled wire rod for a 1,960MPa-level cable rope galvanized steel wire and a production method. The hot-rolled wire rod is prepared from, by weight percent, 0.85%-0.91% of C, 0.20%-1.00% of Si, 0.60%-0.90% of Mn, 0.25%-0.35% of Cr, 0.015%-0.040% of Al, not larger than 0.025% of P, not larger than 0.025% of S, 0.02%-0.07% of V, not larger than 0.20% of Cu, not larger than 0.0030% of Ca and the balance Fe and inevitable impurity elements. Reasonable component contents are adopted in the wire rod, the wire rod has the beneficial effects of being high in tensile strength and plasticity, the situation of hardening during machining in the drawing process can be effectively reduced, and the torsional property of the steel wire obtained through drawing is effectively guaranteed. In the wire rod obtained through the method, the sorbite structure proportion reaches 90% to 93%, the tensile strength of the wire rod is larger than or equal to 1,320 MPa, and the area reduction rate is larger than or equal to 40%. After the wire rod obtained through the method is subjected to drawing, galvanizing and stabilizing treatment, the tensile strength of the steel wire is larger than or equal to 1,960 MPa, the torsion index is larger than or equal to 14 times, and the wire rod can be used for producing the 1,960MPa-level bridge cable rope galvanized steel wire and is suitable for ultra-large-span bridges with the ultrahigh requirement for strength.

The invention discloses a production technique for chicken powder with a great freshness flavor, and belongs to the technical field of processing food seasoning. The chicken powder comprises the following materials according to mass: 30kg of fresh chicken skeletons, 30kg of fresh chicken, 7kg of maltodextrin, 2.5kg of disodium nucleotide, 0.1kg of sodium citrate, 7kg of trehalose, 10kg of edible salt, 10kg of monosodium glutamate, 2kg of lentinula edodes, 1kg of radix puerariae, and 0.4kg of pepper; the production technique comprises the steps: pretreating active ingredients, and carrying out high-temperature high-pressure sealed cooking, fine treatment, enzymolysis for flavor, mixing, spray drying, filling and capping. According to the production technique, the processes are simple, the energy consumption can be reduced, the loss of flavor components can be effectively reduced and sufficient release of flavor substances is promoted, the chicken powder is rich in chicken flavor, harmonious in saline taste, delicate flavor and perfume, luminous in color, good in rehydration property, smooth in mouthfeeling, free from sand grains, and milkily white in soup feeling.

There is provided a detergent dispensing apparatus of a washing machine. The detergent dispensing apparatus includes a main body of the washing machine, a detergent cartridge separately received in the main body and storing a detergent therein, a detergent outlet formed on the detergent cartridge to define a detergent dispensing passage, and an opening / closing assembly for selectively opening and closing the detergent outlet.

The invention relates to a soil improvement agent and a processing method thereof. The soil improvement agent comprises the following raw materials in parts by weight: 60-95 parts of desulfurized waste, 0.5-2.0 parts of inorganic accelerator, and 0.5-30 parts of organic accelerator. The soil improvement agent provided by the invention has the beneficial effects that calcium ions in the desulfurized waste are used to replace exchangeable sodium on the soil colloid, thus reducing the alkalization degree of the soil; at the same time, the excellent pore structure and physical property of the organic accelerator are used to improve the physical property of the soil and the granular structure of the soil, reduce the pH value of the soil, and improve the soil fertility; the inorganic accelerator can also improve the granular structure of the soil; in addition, with auxiliary inorganic fertilizer and organic fertilizer, the soil fertility of the soil can be further improved so as to provide nutrient contents for plant growth. To sum up, by adopting the scheme in the invention, unbalance of nutritive elements in the soil can be effectively overcome, the land capability is improved, the soil is loosened, and the fertilizer efficiency is increased, so that the soil salinization phenomenon is fundamentally harnessed step by step.

Provided are low-cost and high-strength stainless steel and a manufacturing method of a welding pipe of the low-cost and high-strength stainless steel. The high-strength stainless steel is prepared from, by weight percent, 0.02%-0.15% of C, not larger than 0.6% of Si, 2%-15% of Mn, 12%-20% of Cr, 0.5%-7.0% of Ni, not larger than 0.04% of P, not larger than 0.03% of S, 0.02%-0.20% of N, 0.5%-2.0% of Cu, 0.001%-0.08% of AL, 0.001%-0.10% of V and the balance Fe and inevitable impurities, and the total quantity of the impurities does not exceed 0.05%. Meanwhile, the formula 12.5<=100*(0.5*Mn+Ni+30*N)<=22 needs to be met. The tensile strength of the high-strength stainless steel ranges from 700 MPa to 1,800 MPa, the yield strength of the high-strength stainless steel ranges from 400 MPa to 1,200 MPa, and the ductility of the high-strength stainless steel ranges from 50% to 12%. The requirements for car weight reduction, high safety performance, good corrosion resistance and the like are met, and a part and other products manufactured through the welding pipe have delaying and cracking resisting capacity.

The invention relates to a conditioner for severely alkaline soil and a processing method of the conditioner. The conditioner for the severely alkaline soil comprises the following raw materials in parts by weight: 88-92 parts of desulfuration waste, 1-3 parts of inorganic accelerator and 5-11 parts of organic accelerator. According to the conditioner for the severely alkaline soil, calcium ions in the desulfuration waste are used for replacing exchangeable sodium on a soil colloid, so that the alkalisation degree of the soil is reduced; an excellent pore structure and physical properties of the organic accelerator are used for improving physical characteristics and a granular structure of the soil; the pH value of the soil is decreased; the soil fertility is increased; the inorganic accelerator also can improve the granular structure of the soil; an inorganic fertilizer and an organic fertilizer are additionally adopted to further increase the soil fertility; and nutritional ingredients are provided for crop growth. In a word, the conditioner can effectively overcome nutritional element unbalance in the soil, increase the soil fertility, loosen the soil, improve the fertilizer efficiency and fundamentality control soil salinization gradually.

Condensation-crosslinked dental materials based on alkoxysilyl-functional and / or hydroxysilyl-functional polyethers are useful in dentistry for taking tooth impressions, bite registration, denture rebasing, or as temporary and permanent dental cement, temporary closure material, or dental prosthodontic material. The dental material has a composition containing at least one alkoxysilyl-functional and / or hydroxysilyl-functional polyether a), at least one catalyst b), and optionally water c) and at least one acidic compound d) that has a water solubility (20° C.) of no more than 150 g / l.

The invention relates to an application of a moderate alkaline soil modifier to soil improvement. The moderate alkaline soil modifier comprises, by weight, 80 to 90 parts of desulfation wastes, 3 to 5 parts of inorganic accelerators and 8 to 15 parts of organic accelerators. According to the moderate alkaline soil modifier, calcium ions in the desulfation wastes are utilized to replace exchangeable sodium on soil colloid, so that the alkalinity of the soil is reduced; simultaneously excellent pore structures and physical properties of the organic accelerators are utilized, so that the physical properties and the granular structure of the soil can be improved, the potential of hydrogen (pH) value of the soil can be reduced, and the soil fertility is increased; the granular structure of the soil can be improved as well by the aid of the inorganic accelerators; and the soil fertility can be further improved by the aid of inorganic fertilizers and organic fertilizers, and nutritional ingredients can be provided for crop growth. In a word, the moderate alkaline soil modifier has the advantages that the unbalanced nutrition elements in the soil can be effectively avoided, the soil fertility can be improved, the soil can be loosened, the fertilizer efficiency is increased, and the soil salinization and alkalization can be gradually and radically treated.

The invention relates to functional edible oil containing lycoypene. According to the invention, plant edible oil contains lycoypene and vitamin E. The invention is characterized in that 100g of the plant edible oil contains 12-200mg of lycoypene and 2-20mg of vitamin E, the lycoypene and the plant edible oil form a uniform and clear mixture, and precipitation capacity of the lycoypene is not more than 5 percent after the functional edible oil stands still for 120-168 hours. The function edible oil does not contain chemical antioxidants and has natural oxidation resistance. On the basis of research on the property and function of lycoypene, a proper amount of lycoypene is added to plant edible oil and can be ingested by people through cooking, the physiological action of lycoypene can be fully played, and the functional edible oil has health-care and treatment effects.

The invention relates to a low sugar or sugar free concentrated polyphenolic extract comprising at least about 30% polyphenols (w / w) and a protein-polyphenol aggregate matrix comprising at least about 15% polyphenols (w / w). The invention further relates to methods of producing a low sugar or sugar free concentrated polyphenolic extract comprising (a) extracting a low sugar or sugar free plant tissue with an aqueous solvent to produce an extract having an aqueous portion and a solids portion; (b) filtering the extract to separate the aqueous portion from the solids portion; and (c) reducing the volume of the separated aqueous portion, and methods of producing a protein-polyphenol aggregate matrix comprising about 1% to about 40% polyphenols (w / w) using the low sugar or sugar free concentrated polyphenolic extract of the invention.

The invention relates to a method for aseptically producing miniature seed stems of common bletilla pseudobulb seeds. The method comprises the following steps of disinfecting the common bletilla pseudobulb seeds; germinating the seeds on a germination culture medium; inducing the seeds to root; and inducing artificial seed stems to form, grow and mature and the like. According to the method, technical routes and key technologies from the step of germinating the common bletilla pseudobulb seeds to the step of forming the mature seed stems are optimized and proposed, and a technology of culturing common bletilla pseudobulb tissues can be simplified, so that the common bletilla pseudobulb seeds are directly are bred in a large scale, and the common bletilla pseudobulb seed stems are produced. The germination rate of embryo seeds reaches more than 95 percent, and more than 80 percent of tissue culture seedlings can form mature miniature seed stems. According to the method, the difficulty that the common bletilla pseudobulb seeds rarely germinate under natural conditions is overcome, and the defects that the survival rate of transplantation of the seedlings in the conventional common bletilla pseudobulb tissue culture and seed aseptical breeding is low and the like are overcome. A feasible practical technology is provided for quickly producing a great amount of seed stems in factories by means of the common bletilla pseudobulb seeds, the current situation of the shortage of the seed sources of common bletilla pseudobulb can be alleviated, and large-scale artificial cultivation of the common bletilla pseudobulb is promoted.

The invention relates to the technical field of medical plastic surgery, in particular to the technical field of facial filling and anti-wrinkle, in particular, it is an injection filling cosmetic modification anti-aging, skin beautification and facial rejuvenation material. The preparation formula of the present invention includes hyaluronic acid, collagen, vitamin E and PLGA. The preparation method comprises: 1) preparing high-viscosity gel; 2) preparing PLGA nano-microspheres; 3) fully mixing high-viscosity gel and PLGA nano-microspheres; 4) sterilizing and filling. Compared with the prior art, the present invention has the beneficial effect that: the combined use of collagen and hyaluronic acid reduces skin erythema, swelling, hardening or itching, muscle pain, urticaria or Other symptoms such as rash. It reduces the probability of severe complications such as peripheral blood circulation embolism, skin necrosis, retinal artery embolism, and cardiocerebral artery embolism that may be caused by simple hyaluronic acid injection, and the safety of product use is improved.

The invention relates to a conditioner for moderately alkaline soil and a processing method of the conditioner. The conditioner for the moderately alkaline soil comprises the following raw materials in parts by weight: 80-90 parts of desulfuration waste, 3-5 parts of inorganic accelerator and 8-15 parts of organic accelerator. According to the conditioner for the moderately alkaline soil, calcium ions in the desulfuration waste are used for replacing exchangeable sodium on a soil colloid, so that the alkalisation degree of the soil is reduced; an excellent pore structure and physical properties of the organic accelerator are used for improving physical characteristics and a granular structure of the soil; the pH value of the soil is decreased; the soil fertility is increased; the inorganic accelerator also can improve the granular structure of the soil; an inorganic fertilizer and an organic fertilizer are additionally adopted to further increase the soil fertility; and nutritional ingredients are provided for crop growth. In a word, the conditioner can effectively overcome nutritional element unbalance in the soil, increase the soil fertility, loosen the soil, improve the fertilizer efficiency and fundamentality control soil salinization gradually.

A laser welding method for hot rolled steel plate in the process of continuous producing coiled material. Two hot rolled steel plates which are easy to low temperature transforming are abutted. The abutting portion of the hot rolled steel plates are laser welded to form welded seam. The welded seams of the hot rolled steel plates are pressed by the pressing machine. The invention hardenings the microstructure of the welded seam to lesser degree, ensuring the welded seam with stable quality .

The invention discloses delayed coagulation ready-mixed mortar. The delayed coagulation ready-mixed mortar comprises the following components in percentage by weight: 20-35% of cement, 60-79% of medium-fine sand, 0.05-0.3% of cellulose ether high molecular polymer, 0.1-2.0% of technical fiber, 0.1-4.0% of expanding agent, 0.1-1.0% of water reducing agent and 0.1-1.0% of retarding agent. The delayed coagulation ready-mixed mortar provided by the invention has the advantages that the coagulation time of the ready-mixed mortar can be effectively prolonged, simultaneously the hardening of the mortar can be delayed, the potential safety hazard of quality caused by secondary water addition is prevented, the delayed coagulation ready-mixed mortar is convenient to use, the secondary time and labor consuming water addition is avoided when the delayed coagulation ready-mixed mortar is used in hot weather construction, and the preparation method is simple and low in cost.

The invention relates to super soft bread and a preparation method thereof. Raw materials of the bread comprise seed flour and main flour; raw materials of the seed flour are strong flour, yeast, a bread modifier, needle mushroom powder, vitamin E and water; and raw materials of the main flour is strong flour, tallow aroma powder, yeast, high fructose corn syrup, table salt, milk powder, egg, anhydrous ghee and water. The needle mushroom powder and the vitamin E are added into the seed flour to enhance the human immunity and effectively remove free radicals in a body; and in the main flour, the high fructose corn syrup replaces the traditional sucrose, and the anhydrous ghee is added, so that the bread can be kept fresh and soft for a long time, and the hardening of the bread is delayed.

The invention discloses annealing method for high speed tool steel cold drawn steel wire finished products, solving the problems of low annealing efficiency, large energy consumption, etc. The mass percentage compositions of a high speed tool steel cold drawn steel wire rod are: 0.80 to 0.90 percent by mass of C, less than or equal to 0.40 percent by mass of Mn, less than or equal to 0.40 percent by mass of Si, 3.80 to 4.40 percent by mass of Cr, 1.75 to 2.20 percent by mass of V, 5.50 to 6.75 percent by mass of W, 4.50 to 5.50 percent by mass of Mo, less than or equal to 0.030 percent by mass of P, less than or equal to 0.030 percent by mass of S, and the balance Fe. The method comprises the following steps of: 1) annealing of finished product, in which the rod is placed into a strong-convection annealing furnace, a heating mantle is cover on the furnace, and then nitrogen purging is carried out to replace the air in the furnace with nitrogen which is used for atmosphere protection during the annealing process; 2) heating the product with the furnace to a temperature of between 710 and 750 DEG C and keeping the temperature for 4 to 8 hours, covering the heating mantle, and then cooling down the furnace to a temperature below 650 DEG C, at a cooling speed less than or equal to 30 DEG C per hour, and removing the heating mantle; 4) covering a cooling mantle to cool down the product to a temperature below 140 DEGC at a cooling speed more than 100 DEG C per hour. The invention is high in annealing efficiency, thereby greatly reducing the energy consumption.

The invention discloses super-soft bread and a processing method thereof. The super-soft bread is characterized by consisting of initiating dough and main dough serving as raw materials; the initiating dough consists of high gluten flour, yeast, bread modifier and water serving as raw materials; and the main dough consists of high gluten flour, beef tallow incense powder, yeast, white granulated sugar, salt, milk powder, egg, water and anhydrous butter. The initiating dough is gelatinized so that the water absorption quantity of the initiating dough is increased, the water content of the finished bread is improved, the tissue of the bread is softer, the bread has elasticity and the aging of the bread is delayed at the same time. The method is convenient to operate, and the mouthfeel of the bread is greatly improved.

The invention relates to a special clinical nutritional formula for a patient suffered from nephropathy. The special clinical nutritional formula comprises the following components: 8 to 15 parts of protein, 8 to 12 parts of fat, 55 to 65 parts of carbohydrate, 3 to 5 parts of dietary fiber, 0.5 to 1.5 parts of macroelement, 0.01 to 0.04 part of microelement, 0.005 to 0.015 part of fat-soluble vitamin, 0.01 to 0.2 part of water-soluble vitamin, 0.05 to 1 part of dietary essence, 0.05 to 2 parts of medicine-and-food-homologous ingredient, 0.1 to 3 parts of natural plant compound and 0.005 to 2 parts of new-source food, wherein the medicine-and-food-homologous ingredient is selected from at least one of semen sojae preparatum, poria cocos, fructus rubi, fructus lycii, rhizoma polygonati, radix platycodonis, semen euryales, rhizoma dioscoreae and concha ostreae; the components are all previously prepared to be powder, wherein the fat and the vitamins are prepared to be the powder by adopting a micro-capsule embedment technique. Through screening and proportioning the components, the nutritional formula provided by the invention is used for providing more reasonable and complete nutritional support for the patient suffered from the nephropathy, so as to ameliorate the physical state of the patient suffered from the nephropathy; meanwhile, the components for nourishing liver and kidney, boosting essence, nourishing the blood and enhancing immunity are added; the progress of a disease is delayed; the living quality is improved and the life is prolonged.

Disclosed are nutritional products and nutritional bars having increased shelf life. The nutritional product or nutritional bar is manufactured utilizing high power ultrasound in combination with an extrusion process or slabbing process. It has been found that by utilizing high power ultrasound during the manufacturing process of nutritional products and nutritional bars, that the resulting product has increased shelf life and improved texture. In some embodiments, the nutritional bars include a solid crisp matrix.

The invention provides a production method of a linearly cut molybdenum wire. Certain solid solution metal elements are added into molybdenum so as to realize a solid solution strengthening effect. The strength of the molybdenum wire can be properly improved, and the machining performance of the molybdenum wire can be improved. Certain rare earth oxides are added into the molybdenum so as to realize refined grain strengthening and dispersion strengthening effects, crystalline grains can be refined, fiber texture can be strengthened, and the strength, high temperature resistance and wear resistance of the molybdenum wire can be improved. By adopting an intermediate annealing technology, the plasticity can be restored, the internal stress is reduced, the machining difficulty is reduced, and the production and expansion of cracks are reduced or eliminated. By adopting a hot wire drawing machining technology, the plasticity of the material can be kept, and the hardening of the material during the machining of a semi-finished product is reduced. By adopting a finished product multi-mode cold wire drawing technology, work-hardening and strength enhancement effects can be realized. The tensile strength of the linearly cut molybdenum wire made by the production method generally can reach 1900-2300mpa and can meet the requirements of linear cutting users.

The use of an additive, including at least one water-soluble polymer, which is a homo- or copolymer of at least one monoethylenically unsaturated carboxylic acid, and optionally at least one alkali silicate as a liquefier for geopolymers. The additive can be produced in a simple and inexpensive manner and is particularly suitable for liquefying geopolymers, in particular geopolymers containing metakaolin.

A building block forming rotation platform type press comprises a rack, a first filler mechanism, a second filler mechanism, a pressing mechanism, a block pushing mechanism, a rotation platform, a center shaft, a hollow shaft and a drive motor. The center shaft is arranged on the rack. The drive motor is arranged on the rack and located beside the center shaft. The center shaft is sleeved with the hollow shaft, and the hollow shaft is driven by the drive motor to rotate around the center shaft through gear engagement. The rotation platform is fixedly installed on the hollow shaft and can rotate along with the hollow shaft. The first filler mechanism, the second filler mechanism, the pressing mechanism and the block pushing mechanism are arranged on the rack and can be distributed around the center shaft in an equal-angle manner. The building block forming rotation platform type press is simple and compact in structure and low in manufacturing cost, and the requirement for raw materials is low; building blocks obtained through pressing are high in strength and suitable for being stacked, and therefore the usage number of trays can be reduced, and the transporting cost is reduced; and meanwhile the hardening phenomenon after building block forming is avoided.

The invention relates to a precise cold forging formed cam sheet manufacturing method. The manufacturing method includes the steps of A, pretreatment, B, cold forging forming and C, thermal treatment, wherein in the step A, a steel wire rod or a steel bar is annealed, drawn and lubricated, so that a first blank suitable for cold upsetting forming is obtained; in the step B, a cam sheet is forged through a horizontal or vertical forging machine, and the cold forging forming step includes an expansion and extrusion procedure. Due to the adoption of the expansion and extrusion technology, acquisition of a ball bearing steel cold forging cam is possible for the first time; compared with the traditional upsetting technology, forging force is greatly reduced, the cold hardening speed is low, cracks are not likely to generate, the service life of a die is greatly prolonged, a metallographic structure can not be changed in the cold forging process, and a surface structure is free of the carbon insufficiency risk; due to the fact that a finally-used outline is obtained through precise extrusion or finishing directly, the outline of the cam does not need to be ground, and equipment investment and part cost are greatly reduced.

The invention discloses a soil contamination conditioner and a method for preparing the same. The soil contamination conditioner comprises diatomaceous earth, attapulgite, chitosan, shell powder, anionic polyacrylamide, humus, biological carbon materials, fly ash, quicklime, bed silt, microbial preparations and mineral decomposition bacteria. The method includes preparing the biological carbon materials; uniformly mixing various components with one another to obtain mixtures; fermenting the mixtures to obtain the soil contamination conditioner. The soil contamination conditioner and the method have the advantages that the soil contamination conditioner can be applied to contaminated soil, accordingly, the soil can be activated, physical and chemical structures of the soil can be changed, the problem of soil hardening, chemical accumulation and microorganism imbalance conditions due to long-term use of chemical fertilizers and pesticides can be solved, and a safe growth environment can be provided for crops.

The invention discloses a T-type high pier cast-in-place bent cap formwork structure. The T-type high pier cast-in-place bent cap formwork structure comprises a cushion cap, a steel plate frame latticed panel is arranged at the top of the cushion cap, prefabricated reinforced concrete base plates are fixedly connected to the two ends, a groined support is arranged on the upper portion of the steel plate frame latticed panel, a shaped steel formwork is arranged on the upper portion of the groined support, and support vertical rods are connected to the two ends of the groined support; a shaped steel frame is arranged between the top of the groined support and the tops of the support vertical rods and is fixedly connected with the groined support and the support vertical rods, and joist steel is arranged between the shaped steel frame and the shaped steel formwork; upside down bowl-type brackets are arranged on the upper portion of the prefabricated reinforced concrete base plates. The T-type high pier cast-in-place bent cap formwork structure has the advantages that the existing cushion cap and prefabricated reinforced concrete plate concrete are used as bearing bases, the work of earthwork flattening and foundation hardening is reduced, foundation processing mechanical cost, concrete material cost and labor cost are saved, and the engineering period is shortened.

The invention relates to a brewing process of black wine. The black wine is prepared through the conventional brewing steps of: soaking raw materials; crushing; proportioning; steaming; cooling; mixing fermented grains; feeding in a cellar to ferment; and filtering. According to the brewing process, a method of steaming for many times is adopted in the steaming process, so that the internal raw materials are enabled to be uniformly heated and fully steamed in a short time, the energy is saved, and the wine yield of the raw materials is increased.

A laser welding method for hot rolled steel plate in the process of continuous producing coiled material. Two hot rolled steel plates which are easy to low temperature transforming are abutted. The abutting portion of the hot rolled steel plates are laser welded by welding materials containing at most 1% by weight of carbon and 0-1.22 by weight of chrome. The laser welding method for welding the hot rolled steel plates in the process of continuous producing ensures less hardening for welded seam of the abutting portion on the microstructure, thereby ensuring stable welding quality.

The invention discloses a traditional Chinese medicine composition for treating a chronic renal failure and a preparation method of the traditional Chinese medicine composition. The traditional Chinese medicine composition is prepared from the following components in percentage by weight: 5%-20% of processed radix aconiti carmichaeli, 5%-20% of poria cocos, 2%-17% of rhizoma atractylodis macrocephalae, 5%-20% of Chinese herbaceous peony, 5%-20% of ginger, 6%-21% of rheum officinale, 18%-33% of scutellaria baicalensis and 12%-27% of salviae miltiorrhizae. The traditional Chinese medicine composition for treating the chronic renal failure disclosed by the invention has a significant effect on treatment of the chronic renal failure caused by the syndrome of qi deficiency (yang) of the spleen and kidneys and exuberance of internal damp turbidity.

The invention provides a mixed fertilizer for improving light and moderate saline-alkali soil. The mixed fertilizer comprises the following ingredients in parts by weight: 5-15 parts of humic acid fertilizer, 20-35 parts of water soluble nitrogen fertilizer, 18-25 parts of water soluble phosphate fertilizer, 20-28 parts of water soluble potassium fertilizer, 0.1-0.5 parts of microelement fertilizer, 40-60 parts of semi-coking biomass, 5-10 parts of sodium polyacrylate and 20-26 parts of desulfurized gypsum, wherein the semi-coking biomass is a product of carbonizing treatment of straws at 320-360 DEG C for 1.5-2h; and a pH (potential of hydrogen) value of the mixed fertilizer is 6.5-7. The mixed fertilizer is used for treating the light and moderate saline-alkali soil; physical and chemical properties of the soil are improved obviously; the fertilizer is acidic and can neutralize alkaline of the saline-alkali soil; the pH value of the soil is reduced by 1-2; an alkalization degree of the soil is reduced to below 7% after improvement from 10-20% before the improvement; the hardness of the soil is obviously reduced; the penetrability is obviously improved; and a salt content of the soil is decreased year after year.