124results about How to "Guaranteed water retention" patented technology

It relates to a heat-generating composition having such dispersion stability that withstands continuous molding, and has excellent drainage property, excellent heat-generating characteristics, excellent molding property and excellent shape retaining property, without becoming viscous, and relates to a heat-generating body using the same and a process for producing the heat-generating body. It contains, as essential components, a heat-generating substance generating heat upon reaction with oxygen, a carbon component, an oxidation promoter and water, characterized in that the composition further contains a water separation-preventing stabilizer in a proportion of from 0.001 to 0.25 part by mass per 100 parts by mass of the heat-generating composition, and has a water mobility value of from 7 to 40 and a separation degree of from 0 to 30.

The invention belongs to the technical field of building materials, and particularly relates to an internal wall putty which comprises the following components in parts by weight: 150-300 parts of white cement, 500-900 parts of calcium carbonate powder, 10-50 parts of grey desert soil, 1-8 parts of cellulose ether, 7-30 parts of polymer latex powder, 1-10 parts of water repellent, 0.05-3 parts of starch ether and 0.5-7 parts of wood fiber. Compared with the prior art, the internal wall putty has the advantages that 107 glue water or 801 glue water is not used, thus formaldehyde is not contained, the environment is protected; and pregelatinized starch is not used, and the water repellent is added, thus the internal wall putty has the function of preventing water and moisture. In addition, with the white cement and the calcium carbonate powder as the strength basis and the grey desert soil as an auxiliary strength material, the strength of the internal wall putty is ensured; due to the synergistic effect of the cellulose ether and the starch ether, the water-retaining property and the application property of the internal wall putty are ensured; and because the polymer latex powder is added, the flexibility of the internal wall putty and the adhesion of the polymer latex powder and the wall are improved.

The invention provides a set-retarding type long-distance pumping type concrete prepared by waste slag of subway projects and application, and belongs to the field of concrete. The prepared concrete has the advantages that the density and fluidity are good, the extension and strength are high, the production cost is low, and the concrete is suitable for long-distance pumping. The set-retarding type long-distance pumping type concrete prepared by the waste slag of the subway projects comprises the following components in parts by weight: 260 to 300 parts of cement, 151 parts of water, 990 to 1010 parts of stone, 700 to 720 parts of stone chips, 50 to 80 parts of stone powder, 80 to 105 parts of ore powder, 85 to 100 parts of fly ash, 4.9 to 4.95 parts of set-retarding type polycarboxylate superplasticizer, 0.049 to 0.0495 part of starch ether, and 0.098 to 0.099 part of building glue 1093.

The invention discloses a multilayer plant-cultivating bag made of linen. The plant-cultivating bag is composed of three linen layers, the middle layer and the upper layer are sparse linen layers, and the bottom layer is a dense linen layer; the lower layer of matrixes inside the plant-cultivating bag is composed of adhesion agent, water-preserving agent, compound fertilizer, straw, seeds and mixed matrixes of soil, the lower layer of the matrix inside the plant-cultivating bag is called a matrix layer, and the upper layer is a soil layer with the thickness of 1-2cm, and the upper layer contains humus and is called the soil layer. According to the multilayer plant-cultivating bag made of linen, the grass seeds are mixed in the matrix layer inside the plant-cultivating bag, the germination percentage of the seeds is ensured, and meanwhile the seeds are more evenly distributed in the plant-cultivating bag. The plant-cultivating bag is easy to produce and manufacture and low in cost; the specification of the plant-cultivating bag and the grass seed matching proportion can be timely adjusted according to the side slope conditions on a site, practicability is high, and strong promotion and application value is achieved. Besides, the plant-cultivating bag overcomes the defects of an original plant-cultivating bag, meanwhile, the plant-cultivating bag is made of original-ecology material, and the secondary-pollution problem of the existing plant-cultivating bag is solved. The plant-cultivating bag has the advantages of preserving water and fertilizer and high in bud ratio.

The invention provides a process for preparing a water retention agent of fulvic acid. The process adopts acrylic acid / acrylamide, and inorganic mineral raw materials (such as attapulgite, swell soil, white sericite, kaolin and the like) as host crystals, uses aqueous solution of N, N-methylene-bisacrylamide as a cross linker, simultaneously is added with fulvic acid to be polymerized and prepared in aqueous phase condition. The invention adopts 1-10% of aqueous solution of N, N-methylene-bisacrylamide with low degree of cross linking as cross linker to be polymerized and prepared, has low consistency, is capable of directly spraying, and is convenient in use. owing to adding inorganic mineral raw materials of attapulgite and the like, the invention not only keeps the moisture retention of the water retention agent of the prior art, but also greatly reduces production costs, and owing to adding biochemistry fulvic acid, products are provided with biological nutrition and high fertilizer effect.

The invention discloses a planting substrate for dendrobium officinale. The planting substrate comprises a substrate A, a substrate B and a substrate C which are arranged in a manner of being superposed sequentially from bottom to top, wherein the substrate A is prepared from 10-20 parts (by weight) of dried rice straws or dried sugarcane leaves; the substrate B is prepared from 5-20 parts (by weight) of medium sand, 10-30 parts (by weight) of edible fungus leftovers, and the like; and the substrate C is prepared from 15-45 parts (by weight) of biocarbon, 15-45 parts (by weight) of semi-corroded miscellaneous tree branches, 15-45 parts (by weight) of tung fruit peels, 15-45 parts (by weight) of corncobs, 15-45 parts (by weight) of pine barks, and the like. A preparation method for the planting substrate comprises the steps of preparing the biocarbon, preparing the substrate A, the substrate B and the substrate C and then carrying out superposition. The preparation method for the planting substrate is simple and easy to understand; and the planting substrate prepared by the preparation method has the advantages that the condition that the substrate is rotted, is air-proof and does not hold moisture in long-term use is overcome, the cost is low, the nutrition is complete, the growth of the dendrobium officinale is better facilitated, dendrobium officinale stems are promoted to grow more sturdy, and dendrobium officinale root systems are promoted to be more developed.

The invention discloses a Dendrobium officinale culture medium, which comprises a base layer, a buffer layer and a medium layer, wherein the base layer, the buffer layer and the medium layer are successively overlaid from bottom to top; according to parts by weight, the base layer is prepared from 10-20 parts of dry wheat straw or 10-20 parts of dry sugarcane top, the buffer layer is prepared from the mixture of 5-10 parts of silkworm excrement, 10-20 parts of leaf mold and the like, and the medium layer is prepared from the mixture of 15-25 parts of modified charcoal, 15-45 parts of rotten wood or tree, 5-15 parts of expanded perlite and the like. The preparation method of the plantation medium is obtained by overlapping the preparation of the modified charcoal and the preparation of the base layer, the buffer layer and the medium. The preparation method is simple and easy to understand. The plantation medium prepared from the Dendrobium officinale culture medium overcomes the defects that the medium is rotten and airtight and does not realize water retention after the medium is used for a long time. The Dendrobium officinale culture medium has the advantages of low cost and complete nutrition, is favorable for the growth of Dendrobium officinale and accelerates the stem of the Dendrobium officinale to be thicker and the root system of the Dendrobium officinale to be developed.

The invention provides an ecological restoration method for a geological collapse area. The ecological restoration method comprises the following steps that gangue is employed as fillers to fill into a collapse area and then the area is flattened by a bulldozer; the gangue layer is solidly pressed by a road roller; a soil coating layer is paved on the gangue layer; the soil coating layer is formed by 30 to 60wt% of sludge, 30 to 50wt% of gangue and 10 to 30wt% of coal ash; surface soil layer with thickness of 0.3 to 0.5cm is paved on the soil coating layer; the surface soil layer is formed by loess, coal ash, sludge, ureaformaldehyde, bacterial manure and polyacrylamide with proper proportions; and at last, Chinese pines, Populus davidiana and leguminosae trees are mixedly planted on the surface soil layer. By the use of the method, productivity of reconstructed soil can be restored and enhanced in short time, soil environment quality can be improved and soil ecological system can be restored; and the method is simple and easy to operate.

The invention provides a concrete curing agent which is prepared from the following components in parts by weight: 90-99 parts of core-shell structure macromolecule emulsion, 0-5 parts of film-forming aid, 0.1-2 parts of defoaming agent, 0-5 parts of leveling agent and 0-1 part of thickening agent. The concrete curing agent is simple in preparation method, the emulsion of a core-shell structure is prepared by using an emulsion polymerization method, hydroxyl groups are introduced into the shell layer, and the hydroxyl groups can have chemical bonding action with silicon atoms on the surface of the concrete, so that the binding force of the curing agent with the surface of the concrete is improved, and the water retention effect of the concrete curing agent is ensured.

The invention discloses putty powder for an exterior wall and a preparation method thereof, belonging to the field of building coatings. The putty powder for the exterior wall is prepared from the following raw materials in parts by weight: 300-400 parts of ground calcium carbonate, 250-350 parts of white cement, 350-500 parts of quartz sand, 12-30 parts of latex powder, 4-5 parts of cellulose ether, 0.1-2 parts of starch ether and 1-3 parts of magnesium aluminum silicate. The thickness of the exterior wall putty powder can be finely adjusted; tiles pasted by using the exterior wall putty powder are high in flatness; and the putty powder is strong in heat preservation perfromance, good in constructability and high in viscosity.

The invention discloses whipping cream special for an egg tart and a production method thereof. The compositions per 100 grams of raw materials by weight of the whipping cream special for the egg tart provided by the invention are: 80 to 98 grams of the whipping cream, 0.5 to 19 grams of cow milk, 0.1 to 0.8 gram of emulsifiers, 0.1 to 0.8 gram of stabilizers, 0.0 to 0.1 gram of pigment, 0.0 to 0.05 gram of preservative, the balance being water which makes up for 100 grams. Nutrition reinforcer is also preferably added into the raw materials. The production method thereof comprises the following steps of: firstly, acceptance check of the raw material milk; secondly, separation of the whipping cream; thirdly, addition of the compositions; fourthly, pasteurization; fifthly, homogenization; sixthly, UHT sterilization; seventhly, cooling; and eighthly, package. The production of the whipping cream special for the egg tart has smooth mouthfeel and rich nutrition, and meets the roasting stability through addition of the emulsifiers and the stabilizers. Moreover, the quality guarantee period is prolonged by adoption of the UHT sterilization technology, the aseptic package technology and the online addition technology of the nutrition reinforcer.

The invention discloses a dendrobium huoshanense special-purpose planting matrix, comprising a matrix A, a matrix B, and a matrix C which are arranged in an overlaying manner from bottom to top in sequence. According to weight part ratio, the matrix A contains 10-20 parts of dry sorghum stalks or 10-20 parts of dry sugarcane leaves, the matrix B is a mixture of 10-15 parts of silkworm excrement, 10-20 parts of mature ethyl alcohol biogas residue, etc., and the matrix C is a mixture of 10-25 parts of modified charcoal, 15-45 parts of rotten wood, 2-5 parts of a trichoderma spp agent. The manufacturing method for the planting matrix comprises: manufacturing the modified charcoal, manufacturing the matrixes A, B, and C, and overlaying to form the planting matrix. The manufacturing method is simple and easy to understand, and the manufactured planting matrix overcomes problems that a matrix is rotted and does not ventilate and does not retain water after long time use. The matrix is low in cost, complete in nutrition, and is beneficial for growth of the dendrobium huoshanense, and promotes stems of the dendrobium huoshanense to grow thicker, and roots to be more developed.

The invention provides a special egg liquid for a frozen egg tart; the special egg liquid is prepared by the following raw materials in percentage by mass: 12-14% of egg-buffer solution, 3-5% of egg white, 12-16% of full-cream milk powder, 15-18% of white sugars, 3-8% of maltodextrin, 0.2-0.5% of emulsifying agent, 0.1-0.36% of water-retaining agent, 0.3-0.8% of anti-caking agent and the balance of water. The invention further discloses a method for preparing the special egg liquid for the frozen egg tart. The special egg liquid for the frozen egg tart, provided by the invention, has the advantages as follows: 1), baked egg tart has fine organization; 2), the water retention of the egg tart during baking is guaranteed; and 3), the stability of a product is enhanced and the shelf life of the product is prolonged.

The invention discloses a slag powder-doped composition for preparing white facing as-cast finish concrete. The composition is characterized by consisting of the following components in parts by weight: 180-260 parts of cement, 85-110 parts of water, 330-390 parts of sand, 500-580 parts of stone, 2.0-4.0 parts of additive, 1 part of titanium dioxide and 20-60 parts of slag powder. In the composition disclosed by the invention, the proportion of the components is more scientific and reasonable, and the working performance meets the requirements on concrete pumping and pouring; and moreover, the bleeding and separation are avoided, the shrinkage is low, and the formed concrete is dense and has strong texture. With the formula, the large-flow regime white as-cast finish concrete has the advantages of good fluidity, good workability, good water-retaining property, low slump loss, strong pumpability and the like in concrete construction; and the strength of the formed concrete can be guaranteed, the surface gloss is good, and the chromatic aberration meets the requirement on the quality of the facing as-cast finish concrete.

The invention discloses a preparation method of rubber asphalt concrete. The preparation method comprises the following steps of: (I) sufficiently stirring and uniformly mixing portland cement, mineral powder fly ash, stainless steel powder and green mud at 180-190 DEG C; adding rubber asphalt; and stirring at 180-190 DEG C to obtain a mixture; (II) mixing limestone and blast furnace slag; calcining at 500-700 DEG C for 20-30 minutes; cooling; adding limestone and blast furnace slag into the mixture, and stirring at 180-190 DEG C for 4-8 minutes; adding water and high-calcium wastewater; and continuously stirring at 180-190 DEG C for 2-4 minutes to obtain a mixture; and (III) performing layered pouring of the mixture, vibrating and curing at 15-25 DEG C for 5-10day to obtain the rubber asphalt concrete. By adopting the preparation method disclosed by the invention, the compressive strength and crack resistance of the rubber asphalt concrete can be obviously enhanced.

The invention belongs to the technical field of pre-blended mortar and in particular discloses pre-blended mortar prepared from high-volume blaster furnace slag and a preparation method thereof. The pre-blended mortar comprises the following components in parts by mass: 100-110 parts of cement, 10-20 parts of thickening powder, 60-80 parts of coal ash, 324-648 parts of sand, 111-330 parts of blaster furnace slag and 0.111-0.33 part of a water reduction agent. As the blaster furnace flag generated in coal-fired power plants is adopted as aggregate for partially replacing sand in the pre-blendedmortar, on one hand, a novel way is provided for resource utilization of the blaster furnace flag, natural resources used are reduced, and comprehensive utilization of resources is facilitated, and on the other hand, due to use of the blaster furnace flag, the cost of the mortar can be reduced; and meanwhile, as light aggregate, the blaster furnace flag is capable of improving properties such asheat preservation of the mortar when blended with the mortar greatly, and a raw material is provided for development of inorganic light heat-preservation mortar.

The invention relates to a using method of cornstalks, in particular to a method for preparing fertilizer water-conserving blocks and medical dressings by using dried cornstalk cores. The method solves the problem that a method for using the dried cornstalk cores in fertilizer water conservation, soilless culture and medical dressings does not exist at present. The method for preparing fertilizerwater-conserving blocks and medical dressings by using dried cornstalk cores comprises the following steps of: a) preparing dried cornstalk cores; b) respectively preparing fertilizer absorbing solution and traditional Chinese medicine extract absorbing solution; and c) enabling the fertilizer absorbing solution to seep into the dried cornstalk cores to obtain the fertilizer water-conserving blocks; and enabling the traditional Chinese medicine extract absorbing solution to seep into the dried cornstalk cores to obtain the medical dressings. The method effectively solves the problem that the method for using the dried cornstalk cores in fertilizer water conservation, soilless culture and medical dressings does not exist at present, and is suitable for fertilizer water conservation and soilless culture in agriculture and forestry and the preparation of the medical dressings in the medical field.

The present invention provides an air bacteria removal device in which leakage of electrolytic water to the outside is eliminated as much as possible and in which maintenance can easily be performed, the air bacteria removal device comprises a main body including a water storage section having a sealed or semi-sealed structure in which the electrolytic water is stored, and a water absorption member for supplying the electrolytic water from the water storage section to an air-liquid contact member by use of a capillary phenomenon, the air-liquid contact member and the water absorption member are integrated and detachably attached to the main body, the water absorption member attached to this main body enters the water storage section, and is submerged into the electrolytic water, and the water storage section is brought into a sealed or semi-sealed state.

The invention discloses a cultivating method of grape seedlings. The cultivating method comprises the following steps that 1) a sunshelter is built; 2) river sand is permeated into 1 / 4-1 / 3 soil in the sunshelter, a bed is finished, and the bed is 0.8-1.3 meters wide and 15-25 centimeters high; 3) semi-lignification summer tender tips more than 0.4 centimeter thick are collected to be cut into 3-4 sections of branch sections 20-30 centimeters long, the uppermost leaf is reserved, and a cutting panicle is obtained; 4) the cutting panicle is socked for 1-2 hours, then the root of the cutting panicle is socked and dipped into a rooting agent for 5-10 seconds, and cutting of the panicle is vertically carried out according to an array pitch of 20-30 centimeters and a planting distance of 10-15 centimeters; 5) humidity in the sunshelter is kept to be more than 90%, the temperature is kept to be 20-25 DEG C, and fertilization is carried out after rooting; when roots of the cutting panicle are 3-5 in number and more than 5 centimeters long, sunshading is stopped; tips are bound when the cutting panicle is 25-35 centimeters high, and pinching is carried out when the cutting panicle is more than 50 centimeters high. According to the cultivating method, the conditions of a high temperature, rapid growing and a great number of green branches in summer are utilized to carry out green branch cutting, the survival rate is up to 80-90%, and when the seedlings reach 40 centimeters high, the purpose of grape seedling intermediate propagation can be realized.

The invention discloses a technology method of recuperated chicken breast through combination of vacuum with extrahigh-pressure preservation, and belongs to the field of processing of meat products. According to the technology method disclosed by the invention, the water retention rate and the cooking loss rate of the recuperated chicken meat are used as indexes, through single factor experiment and response surface experiment, rolling and kneading time, the addition quantity of water retaining agents, extrahigh-pressure time and pressure are optimized, and the optimum technological parametersare determined. Results indicate that the vacuum degree is 0.06Mpa, and when the rolling and kneading time is 30min, the rolling and kneading effect is the best. When the compounding ratio of preserving liquid is that sodium pyrophosphate is 0.2%, starch is 7% and sodium bicarbonate is 1.5%, water retention is the best. When extrahigh-pressure treatment time is 10min and treatment pressure is 200Mpa, the effect is the best.

The invention provides a medium for plantation of mushrooms and a preparation method. The medium comprises the following components: dried manure, plant straw, chitosan, Stevia rebaudiana residues, eggshells, shell powder, peptone, soybean meal, wheat bran, lime, attapulgite clay, diatomite, an additive, and a bacterial strain. The preparation method comprises the following steps: the additive is extracted at first, the additive and attapulgite clay are mixed and adsorbed, residual components are mixed and fermented, and the medium is obtained. The medium can provide sufficient nutrition for growth of mushrooms, also has good water retention and permeability, and provides a better growth environment for mushrooms.

The invention relates to a preparation method of a high-temperature-resistant environment-friendly water-based non-stick pan coating adhesive. The preparation method comprises charging material, increasing temperature, supplementing material, preserving heat and discharging material. The preparation method is characterized by comprising the following steps: adding a surface active agent to deionized water, heating to predissolve, adding an adhesive layer raw material while stirring, preserving the temperature for three hours after addition is complete, cooling and discharging the material. Because the non-stick pan coating adhesive is polyamide imide aqueous solution, polyamide-imide is nonfusible and nonsoluble polymer and is difficult to disperse in water, and then the polyamide imide is emulsified by using the non-ionic surface active agent so as to stably consist in the water. In this way, Teflon harmful to a human body is replaced by the polyamide imide aqueous solution to be used as a non-stick pan coating so as to ensure high-temperature resistance and environment-friendly aquosity of the coating.

The invention discloses a wood fiber production method, which comprises: S1, material selection; S2, skin removal; S3, water washing; S4, slicing; S5, pre-cooking; S6, pressurizing cooking; S7, grinding; S8, softening; S9, drying; S10, air selection; S11, nutrient solution spraying; and S12, packaging warehousing. According to the present invention, the wood fiber produced through material selection, skin removal, water washing, slicing, pre-cooking, pressurizing cooking, grinding, softening, drying, air selection, nutrient solution spraying, packaging warehousing and other steps can be well used in spray seeding technologies; the wood fiber produced by the method has good softness; and during the spray seeding, when the wood fiber, the water and the binder are mixed, the wood fiber has good water absorption, such that each wood fiber can absorb a large amount of water so as to achieve good water content.

The present invention discloses a method for green plantation of fineleaf schizonepeta herb in a solar greenhouse. The method comprises the following processes of solar greenhouse construction, substrate preparation, seed soaking and pregermination, sowing, seedling growing management, seedling leaving, transplantation and field management. Compared with the prior art, the method has the advantages that anti-virus infection capability of seeds is improved by increasing physical protection, a plurality of natural environmental protection products are added to the prepared substrate, the substrate has well permeability and water-retaining property, so that the seedlings come out evenly, and rate of strong seedlings is high; and the whole plantation process can only be managed, CO2 in the plantation environment is controlled, industrial waste gas can be effectively utilized, and the obtained fineleaf schizonepeta herb plants are strong, high-quality, green and no-pollution.

The invention relates to a special cellulose ether for putty. The special cellulose ether for putty is prepared by mixing cellulose ether, organobentonite and starch ether. According to the special cellulose ether for putty series, the high-viscosity cellulose ether is matched with a proper amount of starch ether, thereby ensuring the water retention property of the putty and controlling the splash degree of the putty. The organobentonite is added in the formula, so that the putty has proper viscosity, and has more smooth hand feeling in the construction process. The cellulose ether added into the putty can effectively lower the cost of putty, so that the putty has favorable constructability and favorable comprehensive properties, and is worthy of popularization.

The invention relates to a grading method of mechanism sand used for dry-mixed mortar, and the prepared dry-mixed mortar. The grading method of the mechanism sand used for the dry-mixed mortar comprises the step of sieving the mechanism sand part, which has the particle size of 4.75mm or less and the fineness modulus of 2.3-3.0, into three types of sand, i.e., coarse sand, medium sand and fine sand, wherein the fineness modulus of the coarse sand is 4.3-4.6, the fineness modulus of the medium sand is 3.7-4.0, and the fineness modulus of the fine sand is 1.4-1.7. Furthermore, the dry-mixed mortar is prepared according to a grading formula of the mechanism sand; the ratio of the two or three types of sand in the dry-mixed mortar is adjusted according to the variety of the mortar. The contentof powder with the particle size of less than 0.15 is controlled, so that the powder content of dry-mixed plastering mortar (DPM) can be further effectively controlled; the fineness modulus of dry-mixed masonry mortar (DMM) is 2.3-2.6; the powder content of the DPM is controlled to be within a range of 26-30%, and the fineness modulus of the finished product mortar is controlled to be within a range of 2.1-2.3. The quality of the mortar is guaranteed. By combining the use of a composite additive, the construction performance of the mortar is greatly improved, and the quality of the mortar isguaranteed.

The invention discloses an ecological restoration method of a geologic subsidence area. The method comprises the following steps: step I: filling the subsidence area with gangue as a backfill material, bulldozing with a bulldozer, and compacting by a road roller to form a gangue layer; step II: laying a 0.5-1 m thick covering soil layer above the gangue layer; step III: laying a 0.3-0.5 m thick surface soil layer on the covering soil layer; and step IV: planting Chinese pines, populus davidiana dode and leguminous trees on the surface soil layer in an inter-row mixing manner at a mixing ratio of (0.5-1.5):(1-3):(2-8), wherein the covering soil layer comprises 30-60wt% of sludge, 30-50wt% of gangue and 10-30wt% of pulverized fuel ash; and the surface soil layer comprises 40-60wt% of loess, 15-30wt% of pulverized fuel ash, 20-30wt% of sludge, 0.3-0.5wt% of ureaformaldehyde, 0.5-0.8wt% of bacterial manure and 0.4-0.6wt% of polyacrylamide.

The invention relates to a building raw material, and relates to a high grade concrete prepared from stone chips, iron mine tailings and a polycarboxylate superplasticizer. The high grade concrete comprises 400-420 parts of cement, 50-55 parts of fly ash, 50-65 parts of mineral powder, 160-190 parts of tailing sand, 720-780 parts of stone chips, 870-900 parts of cobblestones, 150-155 parts of water and 6.5-6.7 parts of the polycarboxylate superplasticizer, wherein the sand percentage is 0.50-0.52; the fineness modulus of the stone chips is 3.1, and the fineness modulus of the tailing sand is 1.7; and the particle size of the cobblestones is 5-31.5mm continuous grading. Commonly produced stone chips and iron mine tailings are used to substitute machine-produced sand and river sand produced through grading of cobblestones to be ground, so the production cost is reduced, and the adaptability of fine aggregates and the polycarboxylate superplasticizer is improved; and the high water reduction of the polycarboxylate superplasticizer is used, so the water consumption is reduced, the water-binder ratio is reduced, the viscosity of concrete is reduced, the concrete can be pumped, and the quality of the concrete is guaranteed.

The invention discloses a method for breeding basic seeds of potato by field transplanting of tissue culture seedlings on low-latitude plateau; the method comprises the steps of building a seedling raising pond, scientifically preparing a seedling culture medium, planting tissue culture seedlings, managing pesticides and fertilizers for raising the tissue culture seedlings, transplanting the tissue culture seedlings to a field, managing the field, preventing and controlling late blight, harvesting basic seeds and the like; According to the method, the seedling culture medium is scientificallyand reasonably prepared, and the growth conditions for seedling raising are scientifically and reasonably controlled, in combination with the growth characteristics of tissue culture seedlings of potato; transplanting planting with the medium is adopted, technical conditions such as planting time, seedling transplanting time, planting modes and the like are strictly controlled, and therefore, thesurvival rate of the seedlings is effectively increased, the growth vigor is improved, the defect and problem is solved that pre-basic seeds with tissue culture seedlings are bred before basic seeds are bred with the pre-basic seeds or that seed potatoes are bred in the field directly through tissue culture seedlings, the breeding efficiency of potato seeds is effectively improved, and the labor intensity, facility construction investment and production cost are reduced; and the method is a practical breeding technology of seed potatoes with simple operation procedure, labor saving and labor saving, and is suitable for popularization and application in high-altitude southwest mountainous areas.