30results about How to "Lower pH" patented technology

The application discloses a kind of solid sealing chromium composite cementitious material and preparation method thereof, solid sealing chromium composite cementitious material includes the following mass percentage of substance: 65wt.%~75wt.% of clinker with heavy metal content, 20wt.%~34wt.% of poly-element auxiliary cementitious material, the rest is gypsum;Total chromium content in clinker with heavy metal content is greater than 150mg / kg;Poly-element auxiliary cementitious material includes the following mass percentage of substance: 30wt.%~50wt.% of microbial mineralization steel slag powder, 20wt.%~40wt.% of metakaolin, the rest is fly ash;Microbial mineralization steel slag powder is prepared by carbonic anhydrase producing bacteria and steel slag powder carbon fixation grinding.The application is based on the synergistic effect between clinker with heavy metal and the overall chemical composition of poly-element composite auxiliary cementitious material, and the pH value of solidified body is reduced by secondary hydration.

The application discloses a saline-alkali soil improvement method and belongs to the technical field of saline-alkali soil improvement. The method comprises the following steps: in a screw extruder, humic acid and acrylic acid are grafted and polymerized in a reaction section to form humic acid grafted acrylic acid polymer; N-[2-(2-methoxy-5-nitro-phenoxy)ethyl]pyridine, [2-(3,4-dichlorophenoxy)-ethyl]hexadecyl diethyl ammonium bromide and furfural residue are sequentially added at the opening of a conveying section, and after passing through a mixing section, the mixture is extruded and granulated to obtain a conditioner; according to weight parts, the furfural residue is 70-90 parts, the humic acid grafted acrylic acid polymer is 10-25 parts, and the N-[2-(2-methoxy-5-nitro-phenoxy)ethyl]pyridine and [2-(3,4-dichlorophenoxy)-ethyl]hexadecyl diethyl ammonium bromide are 1-5 parts. The conditioner is applied to saline-alkali soil by being scattered in the soil during ploughing or being applied to the soil by hole planting during sowing, so that the organic matter content of the soil can be increased, the saline-alkali components can be separated from the roots of crops, the stress of the saline-alkali soil on the crops can be effectively reduced, and the yield of the crops can be improved.

The present application relates to the field of Gastrodia elata cultivation, and particularly relates to a method for continuously planting Gastrodia elata in old planting holes. The present application effectively improves the yield of Gastrodia elata, and significantly reduces the incidence of new Gastrodia elata and the decay rate of mother Gastrodia elata by scientifically planting after rhizoma polygonati. In the present application, the breeding hole is sexual reproduction, and it does not need to cultivate armillaria bed. The armillaria, fungus material and Gastrodia elata seeds can be placed at the same time. The planting hole is asexual reproduction. Since the Gastrodia elata seed needs a large amount of nutrient elements, the armillaria bed needs to be cultivated. This operation mode can form the difference of microbial community between the breeding hole and the planting hole, which is beneficial to ecological competition, and thus improves the soil recovery and improvement.

The application provides a preparation method of a kefir active lactic acid bacteria bubble jelly drink. Compared with the prior art, firstly, the mixed liquid of thickening agent and the like is subjected to ultrahigh pressure sterilization before inoculation, which ensures the smooth progress of the kefir fermentation process and does not cause pollution, and compared with other heat treatment sterilization processes, the sterilization process does not have a cooking smell, the base flavor after the kefir fermentation is purer, and the peculiar smell control is better; secondly, after the compound kefir starter is added to the jelly liquid for fermentation, sufficient bubbles are generated, and the product can maintain a certain strength after rewarming, providing a unique product taste and texture, which is different from the jelly drink after aeration, the product bubbles are generated during the fermentation process, and the taste is more natural; in addition, the application reduces the pH value of the base system during the fermentation process, reduces the use of part of the acidity regulator, and further improves the product gel strength.

The application discloses a kind of fermented feed fermented by three strains of probiotics of Bacillus YA ( Bacillus sp ), yeast Y ( Saccharomyces cerevisiae ) and capsular red bacteria R3 ( Rhodobacter capsulatus ), and preparation method and application in aquaculture thereof, and viable count is not less than 1×10 7 CFU / g.The fermented feed is replaced ordinary feed according to certain proportion, and feeding result shows that aquaculture water quality is significantly improved after adding fermented feed, and fish growth performance, digestive enzyme activity, immunity, and muscle quality are also obviously improved.Using the feed in suitable range can shorten growth cycle, reduce cost, improve aquaculture environment, reduce antibiotic use, and improve muscle quality of farmed animals, with good economic and ecological benefits, simple fermentation process, low cost, and suitable for industrial large-scale production.

The invention provides a culture medium for lactic acid bacteria after-generation and application, the culture medium takes trehalose as a carbon source and a yeast extract as a nitrogen source, so that the growth biomass of lactobacillus plantarum, lactobacillus casei and lactobacillus pentosus can be remarkably increased, the pH is reduced, and the antibacterial ability is improved. Lactobacillus plantarum, lactobacillus casei and lactobacillus pentosus are prepared through the culture medium for the lactobacillus after-generation, so that the lactobacillus after-generation has a good inhibition effect on main food-borne pathogenic bacteria such as escherichia coli, staphylococcus aureus, salmonella, pseudomonas aeruginosa and listeria monocytogenes; the preservative can be widely applied to preservation and preservation of meat products such as chilled chicken and pork. The preparation method of the lactic acid bacteria metagen is simple, convenient, low in cost, natural, safe and suitable for large-scale production.

This invention discloses a method for preparing and applying algal hydrothermal char material. Algae are mixed with a reaction medium at a solid-liquid ratio of 50-100 g / L. After thorough stirring, the mixture is reacted under autogenous pressure and at a temperature of 130-150°C for 3-5 hours. After the reaction, the mixture is filtered, washed, dried, and ground to obtain the algal hydrothermal char material. The reaction medium is a mixed solution of ammonium phosphate and ammonia. The prepared algal hydrothermal char material can be used to improve the saline-alkali geochemical properties, reduce pH and salinity, and ultimately increase crop yield.

The invention relates to a jam inner core used in cheese food and a preparation method thereof. The jam inner core comprises the following components in parts by weight: 10-40 parts of water, 5-20 parts of cream cheese, 10-30 parts of cream, 40-55 parts of jam, 0.5-2 parts of a stabilizer, 0.5-1 part of a thickener and 0.01-0.1 part of a bacteriostatic agent. According to the scheme provided by the invention, the jam inner core has good flowability under the condition that a large amount of jam is added into the jam inner core, and the jam inner core can keep a relatively low pH value under the condition that the jam inner core does not contain an acidity regulator, so that the shelf life can be prolonged.

The invention discloses a fruit and poultry circulating planting and breeding method using a spring and autumn greenhouse, and relates to the technical field of agricultural ecological planting and breeding. According to the method, the neutral period of winter crop rotation of fruit trees such as grapes, peaches and cherries planted in spring and autumn sheds is utilized; a closed-loop circulation mode of combining planting and breeding of fruits and poultry in the greenhouse in winter and spring is constructed, wherein the closed-loop circulation mode comprises the steps of preparation of compound bacteria, treatment of pruned branches of fruit trees, film mulching and constant-temperature mixed fermentation of small piles, mixing and feeding of fermented materials and conventional materials, piling of poultry manure and pruned waste, fermentation and returning to the field. According to the method, a production mode of combining fruit and poultry breeding is utilized, two self-preserved lactobacillus strains are used, crushed branches of fruit trees are subjected to mixed fermentation in a shed by adopting a small pile film covering mode, after fermentation is completed, the lactobacillus strains are added into feed in proportion, and finally poultry guano and the crushed branches of the fruit trees in the feeding process are piled up among rows of the fruit trees and fermented again. And finally, waste recycling in facility fruit poultry production is achieved, comprehensive economic benefits are remarkably improved, adaptability is high, and application and popularization are easy.

This invention belongs to the field of detection technology, specifically relating to a method for detecting the heavy metal content in food additives. The detection method includes the following steps: (1) sample pretreatment; (2) preparing a series of heavy metal standard solutions of different concentrations, testing their net strength using an ICP-MS instrument, and obtaining a standard working curve; (3) testing the net strength of the sample solution and blank solution using an ICP-MS instrument, and obtaining the concentration of heavy metals in the food additives by combining the standard working curves, and further obtaining the content of heavy metals in the food additives. The detection method of this invention can be used to detect the heavy metal arsenic in compound meat product thickeners. Through enzymatic hydrolysis-assisted extraction and ultrasonic synergistic extraction, gradient ultrasound combined with temperature control is used to further destroy the sample structure and improve the arsenic dissolution efficiency; EDTA and citric acid are used to complex metal ions, and multiple components synergistically reduce the fixation effect of other ions on arsenic. Through synergistic effect, the accuracy of the detection results is improved.

This invention belongs to the field of conductive materials technology, specifically relating to a silver-coated copper powder, its preparation method, and its application. A method for preparing silver-coated copper powder includes the following steps: S1, pretreating copper powder to obtain pretreated copper powder; S2, mixing the pretreated copper powder, reducing agent, additive, and solvent to obtain a copper powder mixture; the additive is dihydrogen phosphate and / or hydrogen phosphate; S3, mixing silver salt, complex, and solvent to obtain a silver complex solution; S4, mixing the copper powder mixture and the silver complex solution, reacting to obtain a silver-coated copper powder precursor; S5, post-treating the silver-coated copper powder precursor to obtain silver-coated copper powder. The addition of dihydrogen phosphate and / or hydrogen phosphate to the silver-containing reaction solution in this invention can lower the pH value of the copper powder mixture, improve the surface condition of the copper powder, and thus reduce the resistivity of the silver-coated copper powder.

This invention discloses an attapulgite-based animal talcum powder for animal husbandry and its preparation method. The method involves placing iron-modified attapulgite and antibacterial-modified attapulgite, activated carbon, gypsum, calamine, plant powder, and superabsorbent resin in a powder mixer and mixing thoroughly. The mixture contains 70-80 parts modified attapulgite, 3-10 parts activated carbon, 3-5 parts gypsum, 3-10 parts calamine, 3-5 parts plant powder, and 0.25-1 part superabsorbent resin. The attapulgite-based animal talcum powder prepared by this invention has a fine texture and a mild feel. It provides dryness and warmth, sterilization, and adsorption of harmful gases, and can be widely used for applying to the bodies of newborn piglets, postpartum vulvar care of sows, and environmental improvement in animal housing.

The present application relates to the technical field of plant drinks, and particularly relates to a fermented plant drink for improving immunity and a preparation method thereof. The preparation raw material of the plant drink comprises the following components in parts by weight: fermented plant pulp 100-150 parts, fig pectin 2-4 parts; the preparation raw material of the fermented plant pulp comprises the following components in parts by weight: apple 10-15 parts, sea buckthorn 8-12 parts, lemon 4-6 parts, roxburgh rose 5-10 parts, white orchid 4-6 parts, jujube 3-5 parts, sophora flower bud 1-2 parts. The fermented plant drink prepared by the present application has good sensory effect, can effectively eliminate free radicals and improve immunity.

The application discloses a kind of soil improver and preparation method thereof, belong to soil improvement medicament formula technical field, the soil improver provided in the application includes pH conditioner 0-10 parts, nutrient conditioner 20-40 parts and moisture conditioner 0-10 parts, and the pH conditioner and moisture conditioner are not 0 parts, the combination significantly improves the characteristics that saline-alkali soil is difficult to form water stable aggregate, enhances the water retention and air permeability of soil, so as to significantly improve the emergence rate of crops and promote its growth.The experimental results show that the soil improver can significantly reduce the pH of soil, improve the emergence rate of soybean and the accumulation of dry matter mass, and create a more suitable environment for soybean growth.

This invention discloses a fermented feed based on fresh ginger vines and its application in improving the growth performance of fattening pigs. Belonging to the field of livestock feed processing, it is prepared by fermenting pretreated fresh ginger vines and fruit pomace with the addition of a mixed microbial agent. The resulting fermented feed based on fresh ginger vines is mixed with a basic feed and used to feed fattening pigs. This results in improved disease resistance, reduced disease incidence, increased feed intake, and lower production costs.

The application relates to the technical field of plant beverage processing, and discloses a compound star anise liquor and fructooligosaccharide beverage and a preparation process thereof, which is prepared from 11.8wt%-19.6wt% of star anise liquor extract, 8wt%-15wt% of fructooligosaccharide, 0.1wt%-0.3wt% of anhydrous citric acid, potassium sorbate, sodium ascorbate and purified water; the process comprises the following steps: preparing high-concentration fructooligosaccharide syrup by using part of the purified water, adding the extract and sodium ascorbate into the fructooligosaccharide syrup to obtain a high-viscosity complex mother liquor, sterilizing and rapidly cooling the mother liquor under near-neutral conditions, preparing a deep quenching liquid by mixing the remaining purified water, anhydrous citric acid and potassium sorbate, and synchronously colliding and mixing the cooled mother liquor and the deep quenching liquid to carry out sterile filling. The application improves the dispersion state of the hydrophobic components by using a local high-concentration polysaccharide environment, decouples the heating sterilization process and the acid adjusting process, effectively inhibits polysaccharide hydrolysis and essential oil coalescence, and improves the physical and chemical stability of the finished product.

The invention provides Pseudomonas kirscheri WF3, a microbial fertilizer for saline-alkali soil and a preparation method and application of the microbial fertilizer, and belongs to the technical field of biological composting. The invention provides a preparation method of a microbial fertilizer for saline-alkali soil. The preparation method comprises the following steps: (1) preparing a fertilizer carrier comprising a decomposed organic fertilizer, humic acid, attapulgite powder and polyglutamic acid; and (2) inoculating pseudomonas kirschner WF3 into the fertilizer carrier, and carrying out sealed fermentation to obtain the microbial fertilizer for saline-alkali soil. Pseudomonas kirschner WF3 which has exopolysaccharide and organic acid production capacity and can survive in a strong saline-alkaline environment is adopted for fermentation of a fertilizer carrier, the prepared microbial organic fertilizer can effectively improve the content of organic carbon, total nitrogen and water-stable large aggregates (larger than 2.5 mm) in soil, increase the yield of corn, reduce the pH and total salt content of the soil, and improve the yield of corn. The improvement effect on the saline-alkali soil is obvious.

The invention relates to a compound probiotic preparation containing lactobacillus acidophilus WP285 and application of the compound probiotic preparation in preparation of a product for inhibiting formation of pet struvite. A bacterial strain in the compound probiotic preparation is composed of a bacillus coagulans BC66 bacterial strain and a lactobacillus acidophilus WP285 bacterial strain. The invention finds that the BC66 strain and the WP285 strain both have excellent effects on inhibiting formation of pet struvite stone, and the BC66 strain and the WP285 strain can achieve synergistic interaction, and the composite probiotic preparation can effectively reduce the pH value of a simulated stone forming environment in vitro and inhibit formation and deposition of struvite crystals; clinical tests of pets prove that the composite probiotic preparation can effectively and continuously adjust the pH value of urine of a susceptible cat to a weak acid range which is not beneficial to formation of struvite, and the number of struvite crystals in the urine is remarkably reduced.

This invention discloses a high-humicity microbial fertilizer and its preparation method, belonging to the field of microbial fertilizer technology. The method involves adding a mixed carrier, a protective agent, and fermentation broth to a stirred tank in a specific ratio, followed by shaking and adsorption, filtration, and drying with forced air until the moisture content of the absorbent resin powder reaches 30-35%. The powder is then continuously granulated using a granulator and sieved to obtain microbial agent granules with a particle size of 2-5 mm. The microbial agent granules and sodium humate are mixed at a mass ratio of 1-2:10 to obtain the high-humicity microbial fertilizer. The aggregated short fibers, under the adhesive and physical entanglement effects of the protective agent, increase the internal space of the microbial agent granules while improving structural stability, providing a stable growth and reproduction environment for microorganisms, and improving the long-term storage of the fertilizer and the survival rate of microorganisms after application. The enlarged microbial agent granules provide support, increasing soil looseness and providing a good respiratory environment for crop roots.

The application relates to the technical field of battery material preparation, and discloses a preparation method of iron phosphate, which comprises the following steps: obtaining iron ore acid leaching solution, the pH value of the iron ore acid leaching solution is 1.5-3.5; taking at least part of the iron ore acid leaching solution as the bottom liquid of a reaction kettle, adding a phosphorus-containing mixed solution into the reaction kettle for a synthesis reaction, the dropping time is controlled to Tmin, T <= 420n, n is the unit volume molar number of iron ions in the iron ore acid leaching solution, after the dropping is completed and sufficient reaction is carried out, solid-liquid separation is carried out to obtain first solid material containing iron phosphate; extracting anhydrous iron phosphate from the first solid material; the phosphorus-containing mixed solution contains phosphoric acid and a first oxidant. The method realizes the regulation of the crystal morphology and the microstructure of the iron phosphate, can obtain iron phosphate with various morphologies, provides a feasible direction for preparing iron phosphate with different morphologies, and meets the application requirements in different fields; the preparation process does not introduce alkali liquor, the cost is reduced, and the prepared finished product has low impurity content.

The present application belongs to the field of microbial application and feed processing technology, and discloses a bacillus subtilis, named bacillus subtilis YT1, which is preserved in China Center for Type Culture Collection, located at Wuhan University, No. 299, Bayi Road, Wuchang District, Wuhan City, Hubei Province, with a preservation number of CCTCC NO: M 20242767 and a preservation date of December 10, 2024. The present application also discloses a microbial preparation and the application of the bacillus subtilis or the microbial preparation in the processing of silage. The present application first simultaneously possesses high efficient lignocellulose degradation ability, excellent fermentation promotion characteristics, significant antioxidant activity and good probiotic characteristics in a strain of bacillus subtilis. This characteristic enables a single bacterial agent to achieve multiple goals such as fiber degradation, fermentation promotion, oxidation protection, which traditionally requires multiple compounded bacterial agents, and fundamentally overcomes the problems of poor compatibility between strains, unstable synergistic effect and high application cost of existing compounded additives.

The application provides a sodium dimethylate feed additive for improving growth performance of broilers and an application thereof, and relates to the technical field of livestock and poultry feed additives, and is prepared from the following raw materials: sodium dimethylate, compound probiotics, organic acid calcium salt, amino acid chelate, mixed vitamins, natural plant extract and carrier; the sodium dimethylate in the application reduces the pH value of the intestinal tract and inhibits harmful bacteria; the compound probiotics regulate the balance of intestinal flora and promote the growth of beneficial bacteria; the organic acid calcium salt provides a calcium source and enhances the antibacterial effect; the amino acid chelate supplements necessary amino acids and improves the protein utilization rate; the mixed vitamins enhance the immunity and stress resistance of the body; through the synergistic action of multiple components, the growth performance of the broilers is significantly improved, and the needs of the broilers in the whole growth stage are met.

The invention discloses an application of a bacterial strain in production of an external product for improving the micro-ecology of the vagina of a human body, and the bacterial strain is Lactobacillus crispatus SPR003 and has 16S rDNA (ribosomal deoxyribonucleic acid) as shown in SEQ ID NO.1. The invention further discloses a preparation method of the bacterial strain for improving the micro-ecology of the vagina of the human body. The preservation number is GDMCC NO: 66664; the strain produces H2O2 and only produces D-lactic acid, and no drug-resistant gene is found; the external product is suitable for improving changes, caused by vaginal pathogenic bacteria, of micro-ecology of the vagina of the human body. Compared with other lactobacillus crispatus of the same type, the strain has the advantages that the H2O2 production capacity is high, the H2O2 production speed is high, the total amount of H2O2 produced within 12 hours is large, and the concentration of hydrogen peroxide can reach about 220 mu M / L after the strain is cultured for 12 hours in the conventional inoculation amount of 1%. H2O2 is a strong oxidant, and can directly kill or inhibit a plurality of pathogenic bacteria and conditioned pathogenic bacteria such as Gardner bacteria, campylobacter actinomycetes, prevotella and other BV-related anaerobic bacteria.

The invention discloses an application of a bacterial strain in production of an external product for improving the micro-ecology of the vagina of a human body, and the bacterial strain is Lactobacillus crispatus SPR002 and has 16S rDNA (ribosomal deoxyribonucleic acid) as shown in SEQ ID NO.1. The invention also discloses an application of the bacterial strain in production of the external product for improving the micro-ecology of the vagina of the human body. The strain produces H2O2 and only produces D-lactic acid, and no drug-resistant gene is found; the external product is suitable for improving changes, caused by vaginal pathogenic bacteria, of micro-ecology of the vagina of the human body. When the strain concentration is 1 * 10 < 7 > CFU / mL, the strain SPR002 provided by the invention can generate a strong bacteriostatic effect on staphylococcus aureus, and the bacteriostatic rate reaches 98.15%; the bacteriostasis rate of the bacterial strain SPR002 to candida albicans can be obviously improved along with the increase of the concentration of the bacterial strain SPR002, and when the concentration of the bacterial strain is 3 * 10 < 8 > CFU / mL, the bacteriostasis rate of the bacterial strain SPR002 to candida albicans reaches 97.1%. Compared with other Lactobacillus crispatus of the same type, the strain SPR002 provided by the invention can generate a relatively strong inhibition effect on Candida albicans along with the increase of the concentration, so that the strain SPR002 provided by the invention can be developed into a medicine product, and the dosage of the medicine is appropriately increased according to the condition of a patient.

The application belongs to the technical field of biotechnology, and discloses a soaking process for extracting corn starch, which comprises the following steps: corn kernels are mixed with a sulfurous acid solution in a weight ratio of 1:1-5 for soaking, and then inoculated with bacterial liquid, and the soaking time is 40-60 h. Compared with the traditional process, the sulfurous acid-composite bacteria soaking process can not only reduce the soaking time and the use concentration of sulfurous acid, relieve the environmental protection pressure, but also improve the starch quality.

A method for cooling of Pseudosciaena crocea after slaughter, which is completed by the way of temporary breeding, fish selection, losing consciousness in saturated CO2 environment of 20 DEG C, bleeding, removing viscera and gill, ion water flushing, fluidized ice cooling, packaging and cold storage. The method of losing consciousness in saturated CO2 environment can effectively reduce the adverse effects of fish muscle activity and ATP degradation in fish meat caused by slaughter stress on the texture, color and shelf life of fish fillets. Fluidized ice cooling immediately after slaughter can keep a lower pH value, inhibit protein degradation, slow down water loss and muscle softening. The present application can be used as a recommended pre-cooling technology to maintain the quality and biochemical properties of proteins during cold storage of Pseudosciaena crocea.

This invention discloses a saline-alkali soil conditioner and its preparation method, belonging to the field of soil improvement technology. The saline-alkali soil conditioner of this invention comprises the following raw materials in parts by weight: 40-60 parts modified desulfurized gypsum, 10-20 parts decomposed rice husk powder, 15-25 parts modified potassium humate, 5-8 parts compound microbial agent, 2-5 parts zeolite powder, 4-6 parts Achyranthes bidentata extract, and 1-3 parts guanidine sulfate. The compound microbial agent includes *Xanthomonas halophilus*, *Bacillus licheniformis*, and *Pseudomonas aeruginosa*. The modified desulfurized gypsum, modified potassium humate, and compound microbial agent of this invention work synergistically to reduce salinity, improve soil nutrients, and enhance soil fertility. This saline-alkali soil conditioner effectively improves the physical and chemical properties of saline-alkali soil, significantly promotes the growth of maize plants, and increases yield.

This invention discloses a method for preparing a strain of Lactobacillus saccharidus and its application in the preservation of chilled fresh meat, including the following steps: Step (1) Initial screening: Take 1.0 g of environmental sample, add 9 mL of sterile physiological saline, shake at 37℃ and 200 r / min for 30 min, sonicate for 10 min, then serially dilute to 10⁻⁴-10⁻⁶, take 100 μL and spread it on MRS solid medium, incubate at 37℃ for 48 h, pick single colonies and purify 3 times; Step (2) Antibacterial screening: Use 8 strains of putrefactive bacteria such as Enterobacter and Escherichia coli as indicator bacteria. The preparation method of this Lactobacillus saccharidus strain is based on natural sources, ensuring high safety and making it a suitable alternative to chemical preservatives. It exhibits significant inhibitory effects on major spoilage bacteria (such as Pseudomonas and Enterobacteriaceae) and pathogenic bacteria in chilled meat. Its low-temperature resistance (4℃) and acid and alkali resistance make it suitable for the storage environment of chilled meat. After application, it can reduce the total bacterial count, TVB-N content, pH value, and drip loss rate, delay color changes, and effectively extend the shelf life of chilled meat.

This invention belongs to the field of acidifier technology, specifically relating to an acidifier that can improve the health of breeding ducks and the hatchability of hatching eggs, its preparation method, and its application. The acidifier includes acidifier A and acidifier B. Acidifier A is prepared by mixing and adjusting the volume of calcium formate, acetic acid, lactic acid, monk fruit extract, and an immune enhancer; acidifier B is prepared by mixing and adjusting the volume of calcium propionate, citric acid, malic acid, stevia extract, and an antioxidant. This invention enhances the immunity and antioxidant capacity of breeding ducks and improves eggshell quality by intermittently and alternately adding the two acidifiers to their drinking water during the egg-laying period. Furthermore, by spraying a proportionally diluted mixture of the two acidifiers during the later stages of hatching, it improves embryonic calcium absorption and duckling shell-pecking rate, reduces embryonic mortality, and significantly increases the hatchability of hatching eggs. This invention is suitable for large-scale breeding and hatching of breeding ducks.

The application discloses a growth promoter for improving the seedling emergence rate of cotton in saline-alkali soil, and the salt resistance of cotton seed germination is improved by using rapeseed euricin regulator and GABA permeation regulator; the stable agent formed by strong acid materials such as urea phosphate can quickly reduce the pH value and saline-alkali of the soil tillage layer; meanwhile, the urea phosphate, amino acid, fulvic acid and auxiliary materials provide certain nutrient substances for seedling crops; the cooperation among raw materials fundamentally improves the salt tolerance of cotton seedling, not only improves the seedling emergence rate of cotton, but also can quickly reduce the pH value of saline-alkali soil in Xinjiang after dissolving water, improves the chemical composition of soil, reduces the salt content and alkalinity of soil, creates a good environment for crop growth, and after application, the soil salt content is below 20 g / kg, the pH value is below 7.5, the seedling emergence rate of cotton is above 70%, which is more than 30% higher than that of the control, and the yield of cotton in saline-alkali soil in Xinjiang is significantly increased, thereby providing technical support for rural revitalization.