410 results about "Monopotassium phosphate" patented technology

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 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 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 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 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 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.

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.

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.

The application discloses a kind of desulfurization wastewater's increase processing method of sink, for the problem of strong acidity of desulfurization wastewater, higher carbon dioxide partial pressure.Utilize sink increasing agent can realize wastewater sink, the percentage of weight of each component of sink increasing agent is as follows: calcium oxide 10-85%, apatite 10-85%, calcined dolomite 0.01-85%, limestone 0.01-85%, olivine 0.01-50%, sodium carbonate 0.01-10%, sodium bicarbonate 0.01-10%, potassium dihydrogen phosphate 1.00-40%, and the sum of weight ratio of above each component is 100%.By using the method of the application, the sink increasing agent is used to improve the alkalinity of desulfurization wastewater, significantly reduce the carbon dioxide partial pressure in wastewater, improve the absorption of carbon dioxide, realize the transformation of carbon source into carbon sink, and strictly control the weak alkaline of water body at the discharge end.The system can increase the absorption of carbon dioxide, realize the sink of desulfurization wastewater;The method can quickly dissolve the sink increasing agent, realize the quick sink effect;And the method can adjust the weak alkaline of water body at the discharge end, the weak alkaline of desulfurization wastewater with low pH after treatment can be directly discharged.

The invention discloses a preparation method of high-performance porous carbon. The preparation method comprises the following steps: raw material pretreatment, activator mixing, slurry drying, heat treatment and post-treatment. Biomass carbon waste is selected as a carbon source, resource utilization of the waste is achieved, the production cost is reduced, environmental problems caused by waste incineration or landfill are reduced, a green activating agent composed of sodium citrate and monopotassium phosphate is adopted to replace a traditional high-corrosivity activating agent, and the environment-friendly effect is achieved. The preparation method has the advantages that equipment corrosion and environmental pollution are avoided, the subsequent washing process is simple, a strong corrosive reagent is not needed, the operation risk and cost are reduced, carbonization and activation can be synchronously completed through one-step heat treatment, the process steps are simplified, the preparation period is shortened, and meanwhile, the energy consumption is reduced by optimizing the heating rate and the heat treatment temperature.

The invention belongs to the technical field of oil exploitation, and particularly relates to a fracturing fluid thickening agent as well as a preparation method and application thereof. The preparation method comprises the following steps: adding aminomethane tripropionic acid, ethanol and allyl chloride into a first reactor, carrying out a heat preservation reaction, and carrying out reduced pressure distillation to obtain a first functional monomer; adding 3-amino-1, 5-naphthalene disulfonic acid disodium salt, ethanol and allyl chloride into a second reactor, carrying out a heat preservation reaction, and carrying out reduced pressure distillation to obtain a second functional monomer; adding acrylamide, 1, 5-hexadiene-3, 4-diol, 3-[(3-acrylamidopropyl) dimethylammonium] propionate, a first functional monomer, a second functional monomer, monopotassium phosphate and water into a third reactor, dropwise adding an initiator, carrying out heat preservation reaction, adding ethanol, separating out precipitate, centrifuging to obtain a solid, and drying overnight to obtain the thickening agent. The thickening agent provided by the invention has the advantages of high apparent viscosity, strong shear resistance and strong antibacterial ability.

The application discloses a chromogenic culture medium for detecting enteropathogenic Escherichia coli, which contains peptone, sodium pyruvate, sodium chloride, D-sorbitol, D-malic acid, bile salt, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, sodium hydroxide, kaolin, bromothymol blue, crystal violet, polyethylene glycol and agar, and the rest is water. The chromogenic culture medium is simple in composition, convenient to prepare and use, and can be used for identifying enteropathogenic Escherichia coli EPEC according to the color of bacterial colonies, and has the advantages of specificity, high efficiency, rapidness, low cost, simple result judgment and the like, and has a wide application prospect in food safety monitoring.

This invention discloses a culture medium for the mass sporulation of *Substantia macrantha* and its application. The culture medium comprises the following components: lactose 21-23 g / L, yeast extract 14-16 g / L, potassium chloride 0.4-0.6 g / L, magnesium sulfate 0.4-0.6 g / L, potassium dihydrogen phosphate 0.4-0.6 g / L, disodium hydrogen phosphate 0.55-0.75 g / L, sodium molybdate dihydrate 5-7 mg / L, vitamin B6 50-60 mg / L, arginine 20-30 mg / L, and agar 18-22 g / L, diluted to volume with double-distilled water, with a natural pH. Using the culture medium prepared according to this invention to culture *Substantia macrantha* significantly increases the spore yield (164-fold), reaching 2.21 × 10⁻⁶. 8 conidia / cm 2 This provides a reference for the mass production of the fungal spores.

This invention relates to the field of *Glechoma heliotropium* cultivation technology. It relates to a soilless cultivation method for *Glechoma heliotropium*, using oak sawdust, wheat bran, corn flour, glucose, magnesium sulfate, potassium dihydrogen phosphate, and gypsum as culture medium raw materials to prepare mycelium logs. *Glechoma heliotropium* is inoculated into bagged culture medium and cultured under suitable conditions to achieve stable fruiting. This invention allows for the large-scale production of *Glechoma heliotropium* fruiting bodies, which can be promoted and applied as a natural functional food, and the active substances can be extracted for use in health products or pharmaceuticals.

The application discloses a kind of genetic engineering escherichia coli plasmid expression culture medium and fermentation process, including basic medium and feed medium;The basic medium includes glycerol, yeast hydrolysate, yeast peptone, L-glutamic acid, L-valine, L-isoleucine, arginine, tyrosine, lysine, proline, glycine, ammonium sulfate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, citric acid, magnesium sulfate, ferrous sulfate, zinc sulfate, calcium chloride, manganese chloride, cobalt chloride, copper chloride, sodium ethylenediaminetetraacetate;Feed medium includes glycerol, citric acid, magnesium sulfate, ferrous sulfate, zinc sulfate, calcium chloride, manganese chloride, cobalt chloride, copper chloride, sodium ethylenediaminetetraacetate.The application inhibits the accumulation of harmful metabolites, and creates the optimal intracellular environment for stable replication of plasmid.In industrial fermentation scale, the amount of plasmid harvested per liter of fermentation broth is more than 1 gram, and the supercoiling ratio of plasmid DNA is stably maintained at more than 90%, with minimal batch-to-batch variation.

The invention provides a biological slow-release fertilizer for slope corn planting and a preparation method thereof, and relates to the technical field of corn planting. The fertilizer is prepared from a straw fermentation material, humic acid, kieselguhr, a modified starch material, charcoal, expanded vermiculite, sodium alginate, magnesium sulfate, monopotassium phosphate, urea, ethylenediamine disuccinate trisodium salt and propyl gallate. The straw fermentation material is prepared by crushing straw, performing alkali treatment, inoculating aspergillus oryzae for fermentation, sterilizing, continuing to inoculate bacillus subtilis for fermentation and drying; the modified starch material is obtained by mixing a semi-gelatinized starch material and a completely gelatinized starch material. The method overcomes the defects in the prior art, prematurity of slope field corn planting is effectively promoted through adjustment and improvement of the fertilizer, water and soil loss during planting is prevented, and the effect of high-yield corn planting is achieved.

The utility model relates to the technical field of monopotassium phosphate production, and discloses an impurity removal device for monopotassium phosphate, which comprises an impurity removal pool, a crystallizing pool and a delivery pump, the bottom of the impurity removal pool and the bottom of the crystallizing pool are both communicated with a liquid discharge pipe, and a sealing valve is arranged at the port of the liquid discharge pipe; a mounting seat is fixedly mounted on the outer wall of the impurity removal pool, an electric sliding rail is fixedly mounted at the top of the mounting seat, a lifting plate is fixedly mounted at the movable end of the electric sliding rail, after the filter basket enters a solution, the solution can enter the filter basket, crystals separated out by impurities are intercepted by the filter basket, and the impurities are separated out by the lifting plate. The suction pipe in the filter basket sucks the solution entering the filter basket, the solution is transferred into the crystallizing pond through the delivery pump, the hose and the liquid inlet pipe, crystals separated out by impurity ions are still left in the impurity removal pond, and the filter is arranged before the transfer in the whole process, so that the state of the solution can be better maintained; therefore, the solution entering the crystallizing pond is pure enough.

The invention discloses a dandelion seed coating agent and a preparation method and application thereof.The seed coating agent comprises a growth regulator, a bactericide and an insecticide, the growth regulator comprises 2, 4-epibrassinolide, monopotassium phosphate and gibberellin, the bactericide comprises difenoconazole, metalaxyl-M and fludioxonil, the insecticide comprises abamectin and thiamethoxam, and the insecticide comprises a thiamethoxam aqueous solution. The seed coating agent is prepared from the following effective components in percentage by mass: 1 to 2 percent of 2, 4-epibrassinolide, 1 to 2 percent of monopotassium phosphate, 0 to 0.1 percent of gibberellin, 0.1 to 0.3 percent of difenoconazole, 0.1 to 0.2 percent of metalaxyl-M, 0.1 to 0.2 percent of fludioxonil, 0.1 to 0.3 percent of thiamethoxam, 0.1 to 0.3 percent of abamectin and the balance of water. After seeds are treated by the seed coating, pathogenic bacteria carried by the dandelion seeds can be killed, the activity and disease resistance of the dandelion seeds are remarkably improved, and the vegetative growth yield of dandelions is increased.

The invention provides a sisal hemp residue vegetable seedling organic fertilizer and a preparation method and application thereof. The sisal hemp residue vegetable seedling organic fertilizer comprises a first fertilizer bag, the first fertilizer bag is prepared by fermenting the following raw materials in parts by weight through a microbial composition: 90-150 parts of fresh sisal residues, 5-20 parts of sugarcane leaves, 5-20 parts of an organic nitrogen source, 2-5 parts of molasses, 0.5-1 part of monopotassium phosphate, 0.05-0.2 part of magnesium sulfate and 0.3-0.8 part of calcium superphosphate; the sisal hemp residues and other raw materials are compounded for vegetable seedling raising, nutrients are rich, the vegetable planting benefits are improved, and the planting cost is reduced.

The invention provides high-activity crataegus pinnatifida fruit vinegar and a preparation method thereof.The preparation method comprises the steps that crataegus pinnatifida fruits are juiced, then a composite chelating agent composed of polyglucuronic acid and monopotassium phosphate is added for chelating treatment, and a polysaccharide-metal ion cross-linked network is removed; then adding endo-beta-1, 4-glucanase to carry out linear polysaccharide directional enzymolysis, so that the viscosity of the fruit juice is obviously reduced; after the components are adjusted, double modified yeast beta-glucan microspheres are added, yeast is inoculated for alcoholic fermentation, the microspheres are subjected to double grafting modification through galactooligosaccharide and theaflavin, and active components in the crabapple can be directionally captured and stabilized through hydrophilic and hydrophobic effects respectively; after alcohol fermentation is finished, acetic bacteria are inoculated for acetic fermentation, and finally, filtering and sterilization are performed. According to the method disclosed by the invention, by virtue of a synergistic strategy of breaking a network firstly, then carrying out enzymolysis debonding and then carrying out microsphere loading, the fermentation mass transfer efficiency is effectively improved, and meanwhile, the retention rate of functional components such as polyphenol and saponin in the fruit vinegar is increased.

The application discloses a kind of low-carbon composite cementitious material for deep foundation pit engineering and preparation method thereof, belong to building material technical field.The low-carbon composite cementitious material for deep foundation pit engineering, including following weight parts raw materials: 70-90 parts of slag, 5-10 parts of cement, 10-30 parts of phosphogypsum, 5-20 parts of modified secondary aluminum ash, 2-10 parts of modified 5A zeolite, 5-10 parts of organic curing agent, 1-5 parts of carbide slag, 0.03-0.2 parts of alcohol amine early strength agent, 0.5-8 parts of potassium dihydrogen phosphate, 2-8 parts of magnesium oxide, 2-3.5 parts of acid activator, 20-50 parts of water, by making full use of industrial waste slag, secondary aluminum ash, carbide slag, phosphogypsum, reduce resource waste and environmental pollution, convert industrial solid waste into environmental protection building material, realize the diversification of product, functionalization, green, can replace traditional reinforced concrete material, significantly reduce the carbon emission in deep foundation pit engineering, help building industry low-carbon transformation.

The invention relates to the technical field of pathogenic microorganism detection, and discloses a helicobacter pylori detection kit based on a urease method and a preparation method, the helicobacter pylori detection kit comprises a detection sleeve card, detection test paper and a tartar sampling label, the test paper is soaked in a reaction solution and a buffer solution in the preparation process of the detection test paper, the pH of the buffer solution is 6.5-7.0, and the tartar sampling label is used for sampling tartar. The buffer solution comprises monopotassium phosphate and dipotassium phosphate, the final concentration of the monopotassium phosphate is 14-30 g / L, and the final concentration of the dipotassium phosphate is 1.8-3.6 g / L. The method can solve the problems of high false positive rate of detection results, poor accuracy, slow reagent response speed and the like caused by complex oral environment (such as diet residue and non-specific bacterial interference) and lack of an effective control system when a tartar sample is used for detecting helicobacter pylori in the prior art.

The utility model discloses a mixed reaction clarification device for producing monopotassium phosphate by organically extracting crude phosphoric acid. The mixed reaction clarification device comprises a primary extraction reaction tank (19), a secondary extraction reaction tank (3), a clarification tank (9) and a water-phase precipitate collecting tank (23) which are sequentially arranged from top to bottom, an extraction phase inlet and a potassium chloride solution inlet are formed in the top of the primary extraction reaction tank; the bottom end of the secondary extraction reaction tank is provided with a discharge port externally connected with a discharge pipe, and the top of the secondary extraction reaction tank is provided with an extractant liquid inlet guide pipe and a primary extraction reaction tank liquid inlet guide pipe connected to the bottom of the primary extraction reaction tank; the upper part of the clarifying tank is provided with an overflow weir, an organic phase outlet and a central cylinder, the outer side of the clarifying tank is provided with a water phase liquid level control barrel communicated with the clarifying tank, the water phase liquid level control barrel is provided with at least three water phase outlets, and the bottom of the water phase liquid level control barrel is provided with a water phase precipitate discharge port. The monopotassium phosphate produced by the monopotassium phosphate production equipment is low in chloride ion content, the equipment is not easy to block in the production process, and the production stability is high.

The invention relates to the technical field of agricultural fertilizers, in particular to a macroelement water-soluble fertilizer for improving soil and a preparation method of the macroelement water-soluble fertilizer. Tripotassium phosphate, monopotassium phosphate, disodium octoborate tetrahydrate, zinc sulfate monohydrate, microelements and a soil conditioner are compounded to obtain the macroelement water-soluble fertilizer capable of promoting plant growth and improving soil quality. The macroelement water-soluble fertilizer also has a soil loosening function; in the soil conditioner A, the porous structure of the coal gangue can provide a relatively stable living environment for the microorganism sporosarcina pasteurii while increasing the total porosity of the soil and playing a synergistic effect with the sporosarcina pasteurii and the polyvinyl alcohol, and a plant growth regulator secreted by the sporosarcina pasteurii is adsorbed and slowly released; leaching of nutrients is avoided; the soil conditioner B effectively exerts the synergistic remediation effect of the calcium conditioner, the sodium alginate and the humic acid on the soil, the slow release time of the humic acid is prolonged, soil hardening is improved, and the soil conditioner has a wide application prospect.

The invention discloses a selenium-rich nutrient solution and a preparation method thereof.The selenium-rich nutrient solution is prepared from, by use amount per mu, 6-10 g of sodium selenite, 80-120 g of monopotassium phosphate, 10-20 g of organic silicon surfactant and 150-250 mL of tea water; alkaline sodium selenite providing a selenium source balances the pH value of the selenium-rich nutrient solution to be neutral under the neutralization of tea water with the pH value of 5-6 and the action of monopotassium phosphate serving as a nutrient component and a buffer solution, so that the selenium-rich nutrient solution can be stored for a long time; the selenium-rich nutrient solution is sprayed on leaves once, and by taking rice as an example, the selenium content in the rice can be increased to 0.5 mg / kg or above, meanwhile, photosynthesis of crops can be promoted, the stress resistance of the crops can be improved, premature senility can be delayed, and the yield can be increased.

The invention provides a method for rapidly determining the vitality of blueberry pollen, and relates to the technical field of blueberry pollen vitality detection. The method for rapidly determining the vitality of the blueberry pollen comprises the following specific steps: step 1, pollen collection: when blueberry flowers are in a big flower bud stage, picking the flowers into a self-sealing bag, putting the self-sealing bag into a preservation box with ice cubes, taking the preservation box back to a laboratory, and performing detection on the day; and step 2, preparing a PBS solution, namely fixing the volume of 3.16 g of monopotassium phosphate to 100 ml, fixing the volume of 2.28 g of dipotassium phosphate to 100 ml, preparing a mixed solution, and adding an acidic titration solution or an alkaline titration solution to prepare the PBS solution with the pH value of 7.0. TTC (2, 3, 5-triphenyltetrazole chloride) is dissolved in a PBS solution, a 1% TTC solution is prepared for dyeing, the blueberry pollen suspension prepared by the method can fully absorb a reaction solution to avoid pollen viability errors caused by individual differences, meanwhile, the blueberry pollen dyeing time can be 20 min, and the blueberry pollen viability detection time is greatly shortened.