737 results about "Monopotassium phosphate" patented technology

The invention relates to the technical field of intelligent control, in particular to a monopotassium phosphate intelligent control method and system.The method comprises the following steps that rhizosphere phosphorus and potassium concentration changes are obtained, whether the rhizosphere phosphorus and potassium concentration changes are in a critical rate interval or not is judged, an effective absorption time period identifier is generated, and an organ amplification ratio is analyzed to judge a cooperation period; and extracting a stalk concentration ratio, comparing the stalk concentration ratio with a reference interval to generate an application inhibition identifier, fusing information to judge a fertilization window, adjusting the concentration according to the root hair amplification and the water consumption rate, and generating a control instruction set. According to the method, the effective time period of phosphorus and potassium nutrient absorption of the crops is determined through crop rhizosphere phosphorus and potassium ion concentration difference calculation and average treatment, the objective interval of crop nutrient absorption rate indexes is defined, blind fertilization is avoided, the pertinence and accuracy of nutrient absorption and utilization of the crops are enhanced, the excessive application state of nutrient elements is dynamically identified, and the crop quality is improved. The risk of excessive nutrients caused by nutrient enrichment of crops is prevented, and resource waste and environmental burden are effectively reduced.

The invention discloses a potassium fulvate chelated macroelement water-soluble fertilizer with stress resistance and growth promotion functions, and relates to the technical field of water-soluble fertilizers, the potassium fulvate chelated macroelement water-soluble fertilizer comprises the following raw materials by weight: 167-210 parts of mineral source potassium fulvate, 450-460 parts of potassium nitrate, 300-310 parts of urea, 150-160 parts of potassium dihydrogen phosphate, 30-40 parts of potassium sulfate, 15-25 parts of EDTA-disodium, and 5-15 parts of citric acid. 0.5 to 1.5 parts of brassinolide and 4 to 6 parts of polyaspartic acid; according to the potassium fulvate chelated macroelement water-soluble fertilizer with the stress-resistant and growth-promoting functions, through chelation cooperation of potassium fulvate and nitrogen, phosphorus and potassium, the solubility of the chelated phosphorus element in water is increased, and the chelated phosphorus element can be more uniformly distributed in soil; by adopting an EDTA-disodium and citric acid composite chelating system, volatilization and loss of nitrogen elements are reduced, the problem of precipitation of calcium, magnesium and phosphorus is solved, and the soil conditioner is suitable for hard water areas and especially has outstanding performance in saline-alkali soil and arid areas.

The invention discloses a water and fertilizer management method for transplanted high-yield indica type two-line hybrid rice, and belongs to the technical field of rice cultivation. Comprising the following steps: (1) applying citric acid chelated calcium magnesium phosphate fertilizer to soil before transplanting; (2) applying coated controlled-release urea and a silicon-zinc fertilizer on the third day after transplanting; (3) when the tiller number reaches 2650,000-2750,000 plants / hm < 2 >, starting intermittent light field drying for three times, and deeply applying potassium magnesium sulphate before field drying; (4) laterally and deeply applying urea and a boron-humic acid chelate when tips of two inverted leaves are exposed; (5) spraying an aqueous solution in a full heading stage, wherein the aqueous solution comprises monopotassium phosphate, chelated zinc and brassinolide. Through staged precise fertilization, special chelating / controlled release fertilizer and water and fertilizer-field drying cooperation, the method has the advantages that the fertilizer utilization rate is increased, the nutritional requirements of rice in each growth period are precisely matched, and water and fertilizer cooperative management is optimized.

The invention discloses a fermentation medium for regulating and controlling a clostridium aerovorans target product and a fermentation method of the clostridium aerovorans target product. The medium comprises a basic component and a regulating component, the basic components comprise ammonium chloride, potassium chloride, magnesium sulfate heptahydrate, sodium chloride, monopotassium phosphate, yeast powder, calcium chloride dihydrate, sodium selenite, nickel chloride hexahydrate, biotin, folic acid, pyridoxine hydrochloride, thiamine, riboflavin, nicotinic acid, D-calcium pantothenate, cobalamin, para aminobenzoic acid and lipoic acid; the adjusting component comprises sodium tungstate, ferrous sulfate and sodium molybdate, sodium tungstate and ferrous sulfate have a forward adjusting effect on increasing the yield of acetic acid, ethanol and butanol in the target product, and sodium molybdate has a reverse adjusting effect on the target product. By optimizing the proportion of trace elements in the culture medium, the clostridium metabolism efficiency is improved, synthesis of a target product is regulated and controlled, and the method is particularly suitable for industrial production of acetic acid, ethanol, butanol and the like.

The invention belongs to the technical field of electrode foil formation treatment, and particularly relates to an electrode foil and a preparation method thereof and an aluminum electrolytic capacitor, the preparation method of the electrode foil comprises the steps of performing multi-stage formation treatment on a corrosion foil, the number of stages of the formation treatment is at least two, and the formation treatment at least comprises first-stage formation and second-stage formation, first heat treatment is carried out after the second-stage formation; a formation liquid used in the second-stage formation is a mixed solution containing adipate and monopotassium phosphate. According to the preparation method provided by the invention, the formation liquid used in secondary formation is the mixed solution containing adipate and monopotassium phosphate, the limitation of traditional single formation liquid is broken through, and synchronous optimization of the structure, hydration resistance and electrochemical performance of the aluminum oxide film is realized through multi-stage formation, mixed solution synergy and the synergistic effect of formation and heat treatment; meanwhile, production cost is reduced, and environmental load is relieved.

The invention discloses fluoride-salt-free and nitrate-free medium-temperature semitransparent glaze for steel plate enamel as well as a preparation method and application of the medium-temperature semitransparent glaze, and belongs to the technical field of enamel. The semitransparent glaze is prepared from quartz, potassium feldspar, anhydrous borax, sodium carbonate, titanium dioxide, monopotassium phosphate and zinc oxide according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The semitransparent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the product has good porcelain surface, luster and firing adaptability, is suitable for a steel plate matrix, has the firing temperature of 800-840 DEG C and the firing time of 20-30 minutes, and is suitable for a steel plate. The method can be used for producing green and environment-friendly enamel products.

The invention discloses a microbial agent for improving the yield and quality of strawberries and a preparation method and application thereof, and belongs to the technical field of microorganisms. The microbial agent comprises the following raw materials in parts by weight: 40-50 parts of a compound microbial agent, 0.3-0.5 part of xanthan gum, 1.5-2 parts of glycerol, 4-5 parts of a citric acid-sodium citrate buffer solution, 1-1.5 parts of potassium humate, 0.3-0.5 part of monopotassium phosphate, 0.2-0.3 part of chelated calcium magnesium and the balance of water, wherein the total parts by weight of the raw materials are 100; the compound microbial agent is prepared from arthrobacter Xinjiang, linear Prussella bursa-pastoris and bacillus coagulans. The microbial agent disclosed by the invention can be used for effectively preventing and treating strawberry diseases, including root rot, fusarium wilt, gray mold and anthracnose; through the synergistic effects of hormone secretion, nutrient activation, disease inhibition and the like, the microbial agent comprehensively promotes root development and nutrient absorption of strawberry plants, promotes strawberry growth, remarkably improves the strawberry yield and fruit quality, and meanwhile remarkably reduces the strawberry storage rotting rate.

The invention relates to the field of pharmaceutical analytical chemistry, in particular to a method for determining tandospirone and salt intermediates thereof, high performance liquid chromatography is adopted, and chromatographic conditions include that a chromatographic column with octadecylsilane chemically bonded silica as a filler is adopted, and gradient elution is performed by a mobile phase A and a mobile phase B; wherein the mobile phase A consists of a first water phase and acetonitrile; the mobile phase B is composed of a second water phase and acetonitrile; the first water phase is a water solution containing monopotassium phosphate and sodium hexanesulfonate, and the pH value of the first water phase is 3.0-3.8; the second water phase is an aqueous solution containing monopotassium phosphate and sodium hexanesulfonate, and the pH value of the second water phase is 1.8-2.6. The testing method disclosed by the invention has good specificity, accuracy and repeatability, and can be used for monitoring the quality of the tandospirone raw material medicine.

The invention discloses fluoride salt-free and nitrate-free low-temperature matte glaze for steel plate enamel as well as a preparation method and application of the low-temperature matte glaze, and belongs to the technical field of enamel. The matte glaze is prepared from quartz, borax pentahydrate, sodium carbonate, titanium dioxide, magnesium oxide, monopotassium phosphate, calcium carbonate, zinc oxide, magnesium carbonate, lithium carbonate, aluminum oxide and zirconium silicate according to a specific mass ratio. The preparation method comprises the following steps: mixing the raw materials, melting at 1300 + / -10 DEG C in a pure oxygen environment, and quenching after wiredrawing to detect a molten state. The matte glaze completely avoids the use of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are eliminated from the source, the fluorine content of the product is not detected through detection, and the limit value requirements of European Union REACH regulations are met. Zinc oxide and ZnO / TiO2 are added, so that the liquid phase viscosity is reduced, ion diffusion is accelerated, and the opacity (opacification performance) and gloss of the porcelain glaze are enhanced.

The invention discloses an ecological planting method for remarkably improving the amino acid content of citrus, which comprises the following steps: (1) mixing and fermenting pruned citrus branches, weed straws, livestock and poultry manure and indigenous probiotic ferment powder to prepare a basic microbial fertilizer, and adding a calcium magnesium phosphate fertilizer and monopotassium phosphate to prepare a special microbial fertilizer for citrus, applying as a base fertilizer in winter; (2) after citrus pruning, in key phenological periods such as a flower bud period, a young fruit period and a fruit swelling period, an indigenous probiotic enzyme diluent with a specific dilution ratio is used for systematic foliage spraying on a tree body. The indigenous probiotic enzyme contains bacillus amyloliquefaciens, saccharomycetes, active enzymes and a plurality of nutrient elements. The method can significantly increase the total amino acid content of citrus fruits, greatly increase the yield, improve the taste of the fruits, enhance the tree body resistance, reduce the use of chemical pesticides, improve soil, and realize quality improvement, yield increase and green sustainable development of citrus planting.

The invention relates to a composite powder explosion suppressant for suppressing aluminum hydride explosion and a preparation method of the composite powder explosion suppressant, belongs to the technical field of explosion suppressants, and solves the problems of single action mechanism, high required explosion suppression concentration, low efficiency and the like of a traditional explosion suppressant. According to the solution, the composite powder explosion suppressant for suppressing aluminum hydride explosion is prepared through raw material pretreatment, powder mixing and drying in sequence, and the composite powder explosion suppressant is prepared from the following components in parts by mass: 10.2 to 30.2 parts of melamine cyanurate, 20.4 to 40.6 parts of monopotassium phosphate, 15.2 to 25.2 parts of potassium bicarbonate, 8.4 to 13.2 parts of aluminum hydroxide, 6.8 to 11.1 parts of zinc borate, 5.0 to 9.0 parts of fumed silica and 2.0 to 5.3 parts of calcium silicate. The explosion suppressant can act on different combustion areas and combustion stages in the aluminum hydride explosion process, the physical and chemical explosion suppression effects of all the components of the explosion suppressant are fully exerted, and meanwhile, efficient explosion suppression of aluminum hydride explosion can be achieved through the synergistic effect of all the components.

The invention provides a method for promoting generation of tea acid from Nemania sp YAFEF112, and relates to the technical field of microbial culture. According to the method, mycelia of Nemania sp YAFEF112 are inoculated into a culture medium containing pruned walnut branches for culture, the culture medium is an MM culture medium, and the specific formula of the culture medium comprises 1.52 g / L of monopotassium phosphate, 0.52 g / L of magnesium sulfate, 6 g / L of sodium nitrate and 0.52 g / L of potassium chloride. According to the method, the defects in the prior art are overcome, and good conditions are provided for the production of the tea pickled acid by optimizing the formula of the fermentation culture medium, adding pruned walnut branches into the culture medium, improving the fermentation conditions and increasing the content of the tea pickled acid in the Nemania sp YAFEF112 hyphae.

The invention belongs to the field of biomedical materials, and relates to a chitosan calcium sulphoaluminate-potassium magnesium phosphate composite bone material as well as a preparation method and application thereof. The calcium sulphoaluminate-potassium magnesium phosphate composite bone material is formed by curing a calcium sulphoaluminate-potassium magnesium phosphate composite bone material and a chitosan solution, the calcium sulphoaluminate-potassium magnesium phosphate composite bone material comprises the following components in percentage by mass: 5-40% of calcium sulphoaluminate, 0.01-3.0% of boric acid and the balance of dead burned magnesium oxide and monopotassium phosphate, and the molar ratio of magnesium in the dead burned magnesium oxide to phosphorus in the monopotassium phosphate is (1-4): 1. The material provided by the invention has remarkable mechanical property, biological activity, cytotoxicity, injectability, non-transmissivity, coagulation property, degradability, absorbability and the like. Meanwhile, the bone material contains unreacted and degradable monopotassium phosphate, magnesium oxide and other substances, and due to the reasonable degradability and absorbability design of the bone material, the material can be gradually degraded in vivo and can grow along with bone tissue, and the treatment effect is further improved.

The invention belongs to the technical field of microbial culture, and particularly relates to a culture medium composition and application thereof in PDRN recombinant escherichia coli fermentation. The culture medium composition comprises a fermentation culture medium and a fed-batch culture medium, the fermentation culture medium consists of disodium hydrogen phosphate, monopotassium phosphate, ammonium sulfate, magnesium chloride, calcium nitrate tetrahydrate, glycerol and water; the supplemented culture medium is composed of dipotassium phosphate, sodium dihydrogen phosphate, sodium sulfate, ammonium sulfate, ammonium chloride, diammonium hydrogen citrate, glycerin and water, and the metabolic requirements of PDRN recombinant escherichia coli are accurately matched. Meanwhile, the invention provides a fermentation method using the composition, and the problems of unbalanced nutrition, low fermentation efficiency and the like of an existing culture medium are solved. Stable proliferation of thalli can be remarkably promoted, the yield of PDRN products is increased, the culture medium is easy and convenient to prepare, fermentation conditions are easy to control, and the culture medium is suitable for industrial large-scale production and has important application value.

The invention relates to the technical field of material transportation, and discloses a feeding device for monopotassium phosphate purification reaction, which comprises a spiral shell, and is characterized in that a stirring assembly for stirring monopotassium phosphate is arranged in the feeding shell, a vibration assembly for vibrating the feeding shell is arranged at the top of the feeding shell, and the spiral shell is arranged in the feeding shell. A beating assembly used for beating the outer wall of the feeding shell is arranged on the outer wall of the feeding shell, a ventilating assembly used for ventilating monopotassium phosphate in the spiral shell is arranged in the spiral shell, and a pressing rod reciprocates up and down to drive an abutting block to reciprocate up and down, so that vibration of the feeding shell is achieved; as the monopotassium phosphate can absorb surrounding water molecules when exposed in the air, the monopotassium phosphate becomes moist and agglomerated, and the vibration of the feeding shell can help the monopotassium phosphate particles to generate relative movement at the moment, so that the monopotassium phosphate particles are prevented from being tightly combined together to form agglomerates.

The invention discloses an aluminum alloy hard oxidation process, and relates to the technical field of aluminum alloy part surface treatment, the aluminum alloy hard oxidation process comprises the following steps: S1, pretreatment: oil removal, alkali corrosion treatment and acid pickling neutralization; s2, hard oxidation is conducted, specifically, the pretreated workpiece is put into an oxidation tank with electrolyte and a stirring system to be subjected to stirring and oxidation treatment; and S3, post-treatment: cleaning with hot water, sealing with nickel acetate and drying in a drying oven. The process mainly comprises the following steps: carrying out pretreatment of oil removal by an organic solvent, alkali etching and acid pickling, combining sulfuric acid-citric acid-monopotassium phosphate composite electrolyte, pulsed power supply and gradient boosting oxidation, carrying out ultrasonic stirring and precise temperature control hard oxidation, and finally carrying out nickel acetate sealing aftertreatment. The four industrial problems of poor batch consistency of oxidation films of aluminum alloy workpieces, non-uniformity of complex workpieces, high energy consumption and poor compatibility to high alloy materials are thoroughly solved, and the oxidation film which is high in hardness, uniformity and corrosion resistance and saves energy is obtained.

The invention relates to the technical field of fertilizers, in particular to an alginic acid organic water-soluble fertilizer capable of quickly releasing nutrients and a preparation method of the alginic acid organic water-soluble fertilizer. The organic water-soluble fertilizer is prepared from the following preparation raw materials: 30 to 35 parts of sodium alginate, 12 to 15 parts of a seaweed extract composition, 5 to 8 parts of monocalcium phosphate, 5 to 8 parts of monopotassium phosphate, 12 to 15 parts of urea, 0.5 to 0.8 part of a chelating agent, 40 to 45 parts of an organic fertilizer raw material, 1.5 to 2 parts of a microbial strain, 12 to 16 parts of ammonium humate, 4 to 6 parts of a cosolvent and 1.4 to 1.7 parts of xanthan gum. By optimizing the ratio of the raw materials, the absorption and utilization rate of plants to the water-soluble fertilizer is remarkably improved; nutritional ingredients can be quickly released, and plants can be promoted to absorb water-soluble fertilizer; through the synergistic effect of microorganisms and organic components, the content of nutrient substances in soil is increased, plants are helped to better absorb mineral substances and trace elements, the utilization efficiency of the fertilizer is improved, healthy growth of the plants is promoted, and the yield is increased.

The present invention belongs to the technical field of rapid detection of drug sensitivity for bacteria. Disclosed are an enrichment culture medium, and a preparation method therefor and the use thereof. The enrichment culture medium comprises the following raw materials in parts by mass: 15.0-20.0 parts of tryptone, 3.5-5.5 parts of peptone, 1.5-3.5 parts of glucose, 5.0-6.5 parts of yeast extract, 2.0-2.5 parts of dipotassium phosphate, 2.0-3.5 parts of disodium hydrogen phosphate, 1.0-1.5 parts of monopotassium phosphate, 2.5-7.5 parts of sodium chloride, 12.0-18.0 parts of proteose peptone, 15.0-22.0 parts of beef heart infusion powder, 8.0-12.0 parts of soya peptone, 1.0-5.0 parts of 0.1% nicotinamide adenine dinucleotide (NAD), 30-100 parts of newborn calf serum inactivated at 56°C for 30 min, 2.0-4.0 parts of mannitol, 3.0-5.0 parts of sodium pyruvate, 0.23-0.45 parts of cycloheximide, 0.8-2.0 parts of 0.05% bromothymol blue, 2.5-4.5 parts of 0.1% methylene blue, and 1000 parts of distilled water, with the pH value of 6.8-7.5. The enrichment culture medium is used to screen effective therapeutic drugs for bacterial diseases in poultry, and is convenient to use and has a single enrichment effect superior to that of respective selective enrichment broths of target bacteria. Therefore, the culture medium can realize rapid proliferation of common pathogenic bacteria in poultry.

The invention relates to a beta-cyclodextrin-based composite adsorption material with high selectivity as well as a preparation method and application of the beta-cyclodextrin-based composite adsorption material. The preparation method comprises the following steps: dissolving beta-cyclodextrin, an acrylamide monomer and a sodium p-styrenesulfonate monomer in water, and adjusting the pH value of the mixed solution to 6-8; adding an initiator into the obtained mixed solution, carrying out ultrasonic initiation polymerization reaction in an oxygen-free environment, and standing and curing overnight to obtain functional modified beta-cyclodextrin; dissolving the obtained functional modified beta-cyclodextrin, citric acid serving as a cross-linking agent and monopotassium phosphate serving as a catalyst in water, and heating for cross-linking reaction to obtain the beta-cyclodextrin-based composite adsorption material with high selectivity. Acrylamide and sodium p-styrenesulfonate monomers are grafted on beta-cyclodextrin through ultrasonic polymerization for chemical modification, then the characteristic that beta-cyclodextrin is easy to dissolve in water is changed through citric acid crosslinking, and the selective adsorption capacity of the obtained composite adsorption material to fluoroquinolone antibiotics is greatly enhanced.

The invention provides a kind of gel material, including the following components: agar, carrageenan, konjac gum, additives; The mass ratio of described agar, carrageenan, konjac gum is 18-22:1-5:1-5; The described additives include potassium dihydrogen phosphate, potassium sorbate, food coloring. The venipuncture model of the present invention is a highly simulated human blood vessel model, which can simulate real human blood vessel structure, so that learners can perform practical operation in a simulated environment, improve learning effect, adopt agar as main material, simple to make, with low cost, convenient for large-scale production and promotion, single model single point can actually enter needle puncture and reach more than 70 times, improve mold service life, and reduce cost.

The invention discloses a domestication method for efficiently degrading tobacco waste to produce hydrogen by using mixed flora, which comprises the following steps: carrying out anaerobic enrichment domestication culture by taking manure compost as a bacterial source and cellulose prepared from tobacco waste as a core component of a domestication culture medium; the domestication culture medium contains cellulose, ammonium bicarbonate and monopotassium phosphate, and the cellulose concentration gradient is gradually increased without adjusting the pH value; stopping culturing when the hydrogen content in the biogas is reduced by 10%, transferring the biogas to a fresh domestication culture medium for passage according to an inoculum size of 10-20%, and continuously domesticating for 20-40 rounds; inoculating the domesticated mixed flora culture solution into a cellulose liquid fermentation culture medium containing microcrystalline cellulose, ammonium bicarbonate, monopotassium phosphate and a nutrient solution according to the inoculum size of 10-20%; the initial pH of the fermentation liquor is adjusted to 6.5-7.5, high-purity nitrogen is introduced to create an anaerobic environment, and hydrogen is produced through fermentation under the conditions of 35 + / -1 DEG C and 120 r / min. According to the method, flora is easy to culture, hydrogen production is efficient and stable, tobacco waste resources can be utilized, flora stability is high, adaptability is high, and strict sterile conditions are not needed.

The invention relates to the technical field of analysis and detection, and discloses a construction method of a fingerprint spectrum of relevant characteristic peaks of rhizoma coptidis paste and radix rehmanniae recen, and the construction method comprises the following steps: S1, preparing a reference solution and a test solution; and S2, injecting the reference substance solution and the test solution into a high performance liquid chromatograph, adopting a chromatographic column with octadecylsilane chemically bonded silica as a filler, taking acetonitrile as a mobile phase A, taking a 0.0125 mol / L monopotassium phosphate solution as a mobile phase B, eluting according to a specified gradient program, and detecting by adopting an ultraviolet detector to obtain the fingerprint spectrum. By means of the provided construction method of the fingerprint spectrum of the relevant characteristic peaks of the coptis chinensis paste and the radix rehmanniae recen, the sequence and the mutual relation of the characteristic peaks can be indicated, and the effect of the fingerprint spectrum of the relevant characteristic peaks of the coptis chinensis paste and the radix rehmanniae recen is effectively represented.

The invention relates to the technical field of monopotassium phosphate production, and discloses a monopotassium phosphate solution purification method and a device thereof.The monopotassium phosphate solution purification method comprises the following steps that S1, a potassium fluoride solution is tempered, S2, activated carbon decoloration is conducted, S3, filter pressing and impurity removal are conducted, S4, heat treatment and sedimentation are conducted, filtrate is heated to 95-105 DEG C and then fed into a heat sedimentation tank for sedimentation separation, and clear liquid overflows to enter a subsequent concentration procedure; the potassium fluoride solution is used for carrying out hardening and tempering reaction, so that calcium and magnesium ions are effectively removed; and adding a small amount of active carbon for decoloration. The treated solution is subjected to filter pressing to remove impurities, and then the steam consumption is remarkably reduced through the closed and pressurized heat treatment and sedimentation process. The process is high in automation degree and low in production cost, and the purity of the final product is superior to the industrial superior product standard.

The invention discloses an anti-aging agent for prolonging the service life of a foam extinguishing agent and a preparation method and application thereof, and belongs to the technical field of fire-fighting foam extinguishing agents. The preparation method comprises the following steps: stirring and mixing an alcohol antifreezing agent and urea according to a certain mass ratio at room temperature to obtain a component I; adding a metal ion stabilizer into the component I, heating in a water bath to a reaction temperature, and fully stirring and mixing to obtain a component II; cooling the component II to room temperature, continuing to add the anti-corrosion bacteriostatic agent, fully stirring to obtain a component III, and adding monopotassium phosphate to adjust the pH value to 7.2-8.2 to obtain the anti-aging agent. The anti-aging agent and a finished product foam extinguishing agent stock solution are added and mixed uniformly according to the mass ratio of 1: 9. The anti-aging agent can also be directly added in the production process of the foam extinguishing agent, and the adding proportion is that the mass ratio of the anti-aging agent to the sum of other raw materials is 1: 9. The problem that the foam extinguishing agent is short in service life can be effectively solved, and the storage life of the foam extinguishing agent is prolonged.

The invention discloses a desert blue-green algae large-scale culture nutrient solution and application thereof. The desert blue-green algae large-scale culture nutrient solution is prepared from urea, monopotassium phosphate, potassium chloride, sodium bicarbonate and medium trace element fertilizer. Wherein the concentrations of the urea, the monopotassium phosphate, the potassium chloride, the sodium bicarbonate and the medium trace element fertilizer are 500-550 mg / L, 20-30 mg / L, 10-15 mg / L, 10-15 mg / L and 10 mg / L respectively. The invention provides a nutrient solution special for large-scale cultivation of desert blue-green algae, and solves the technical problems of high cost, low yield and low blue-green algae purity of large-scale cultivation of desert blue-green algae in the prior art. The nutrient solution composition provided by the invention can balance each nutrient composition, so that the nutrient composition can be more suitable for the nutritional requirements of the growth of the desert blue-green algae.

The invention relates to the technical field of casting, in particular to a water-soluble salt core for aluminum castings and an injection molding preparation process thereof.The water-soluble salt core is composed of a heterogeneous layered composite material system, and the heterogeneous layered composite material system comprises an eutectic mixture formed by superfine monopotassium phosphate and sodium citrate and used as a base material, the nano palygorskite fiber is used as a reinforcing phase; the functional layer formed by the polyvinyl alcohol film is wrapped on the outer layer; and sodium bicarbonate; according to the water-soluble salt core for the aluminum casting and the preparation technology of the water-soluble salt core, through the improved raw material formula and the innovative preparation technology, the defects in the prior art are effectively overcome. In the aspect of a raw material formula, an eutectic mixture formed by superfine monopotassium phosphate and sodium citrate which are mixed in a specific proportion is used as a base material, and the eutectic mixture has good chemical stability and thermal stability and can provide basic strength and forming performance for the water-soluble salt core.

This invention belongs to the field of building repair materials technology and provides a water-resistant and freeze-resistant magnesium phosphate cement repair mortar and its preparation method. The raw materials of the water-resistant and freeze-resistant magnesium phosphate cement repair mortar include: modified magnesium oxide, potassium dihydrogen phosphate, admixture, retarder, fine aggregate, water-reducing agent and water. The preparation method includes: (1) dry mixing: the modified magnesium oxide, potassium dihydrogen phosphate, admixture, fine aggregate and retarder are dry mixed to obtain a dry material system; (2) wet mixing and molding: half the mass of water is added to the dry material system, and after stirring, the remaining mass of water and water-reducing agent are added, and stirring is continued to obtain the water-resistant and freeze-resistant magnesium phosphate cement repair mortar. The repair mortar has excellent water resistance, freeze resistance and mechanical properties. The preparation method has a simplified preparation process, low production cost, and can realize the high-value utilization of solid waste, meeting the needs of rapid repair of building projects in harsh environments such as dampness and cold.

The invention discloses a nutrition regulating agent for regulating the mature period of citrus fruits and application of the nutrition regulating agent. The nutrition regulating agent is prepared from potassium nitrate, monopotassium phosphate, magnesium sulfate, ferric sodium ethylenediaminetetraacetate, zinc sodium ethylenediaminetetraacetate, boric acid, ammonium molybdate, gibberellin, abscisic acid and diatomite which is supplemented to 100 parts. The invention further provides a preparation method of the nutrition regulating agent and application of the nutrition regulating agent in regulating the mature period of citrus fruits, and the application mode is that when the diameter of the citrus fruits is 40-50 mm, the preparation is diluted by 600-800 times to be sprayed on leaf surfaces, once every 7 days and twice continuously. Through the synergistic effect of mineral nutrient elements and low-concentration hormones, bidirectional precise regulation and control of the citrus mature period are achieved, fruits can be promoted to mature in advance or later for 7-15 days, the sugar-acid ratio and color of the fruits can be remarkably improved, meanwhile, the problems of tree vigor decline and quality decline caused by single hormone treatment are solved, and the method is suitable for large-scale popularization and application. The method has the characteristics of high efficiency, safety and simple operation.

The present invention discloses a method containing VB 12 The production method of the medicinal plant additive for suckling pig feed and the product thereof relate to the field of suckling pig breeding. The production method of the medicinal plant additive for suckling pig feed of the present invention comprises the following steps: (1) crushing cardamom, tricholoma, oregano and inulin respectively and enzymolyzing them with cellulase, and then mixing them in proportion, or first mixing cardamom, tricholoma, oregano and inulin in proportion, and then crushing and enzymolyzing them with cellulase to obtain a primary enzymolysis material; (2) adding potassium dihydrogen phosphate and oxalic acid to the primary enzymolysis material, and continuing to degrade to obtain a hot-cooked enzymolysis material; (3) mixing the hot-cooked enzymolysis material with molasses, wormwood, glucose, and yeast extract to obtain a mixture, adding sterilized tap water and Clostridium butyricum liquid, and fermenting to obtain a primary fermentation material; (4) adding pretreated Sanguisorba officinalis and molasses to the primary fermentation material, and continuing to ferment. The medicinal plant additive for suckling pig feed of the present invention can significantly reduce the feed-to-meat ratio of suckling pigs and significantly increase daily weight gain.

This invention relates to the field of rubber tree cultivation technology and discloses a method for cultivating rubber tree buds based on scale buds. The method includes: planting rubber tree bud-grafted seedlings in a propagation nursery, controlling soil moisture and applying compound fertilizer to the roots to cultivate them into single-stem buds; when the top leaves are stable and mature but the leaflets at the growing point have not yet unfolded, removing the top of the second leaf foliage below the top leaves; after removing the top, using a shade net to provide shade during specific periods on sunny days; regularly spraying a bud-promoting fertilizer containing potassium dihydrogen phosphate and urea during the aging period of the top leaves; stopping the application of compound fertilizer to the roots and spraying a bud-strengthening fertilizer containing potassium dihydrogen phosphate before cutting the buds; after sawing the trunk and cutting the buds, applying a base fertilizer containing well-rotted organic fertilizer and calcium magnesium phosphate, and repeating the topping process. By removing the top at specific times, combined with shading and phased nutrient regulation, this invention promotes uniform bud sprouting, improves the lignification of the buds, and replenishes the tree's nutrient consumption in a timely manner, ensuring the continuous propagation capacity of the propagation nursery.