106 results about "Ammonium ferric citrate" patented technology

The invention discloses a Fe, Ni and N three-doped carbon nanotube coated type FeNi@NCNT catalyst as well as a preparation method and application thereof, and belongs to the fields of energy materialsand electrochemistry. The catalyst is prepared by using dicyandiamide as a C source and N source and ammonium ferric citrate and NiCl2.6H2O as metal sources, adopting one pot method and performing pyrolysis in two steps; and a plurality of Fe and Ni metal particles in the catalyst are uniformly wrapped in walls of ''bamboo-like'' N-doped carbon nanotubes, and a small number of the particles are distributed at the tip ends of the carbon nanotubes. Compared with a common metal alloy oxygen reduction reaction and oxygen evolution reaction bifunctional catalyst, the catalyst disclosed by the invention exhibits good oxygen evolution reaction activity and stability under alkaline conditions; the preparation method is simple, and raw materials used in the method have low costs and wide sources;and the catalyst can be widely used in the fields of proton exchange membrane fuel cells, electrolyzed water, metal-air batteries and the like, and has higher practical value.

The present invention discloses a method for culturing nostoc paludosum by utilizing biological reactor. Said method includes the following steps: (1) preparing culture liquor, adopting magnesium sulfate, calcium chloride, citric acid, ammonium ferric citrate, disodium oxalate tetracetate, sodium carbonate, trace element liquor A5 and dipotassium hydrogen phosphate to make preparation according to a certain proportion; (2). algae seed preparation, using the culture of spherical body obtained from second-grade or third-grade culture as inoculative seed source; (3). using biological reactor to make culture, controlling temp., light intensity and ventilation condition of culture liquor; (4). preparing inoculum; (5). culture; (6) monitoring; (7) harvesting; (8) raising mechanical strength of nostoc paludosum spherical body; and (9) drying.

The invention discloses a production method of ammonium ferric citrate. The ammonium ferric citrate is prepared by water, citric acid and iron powder according to the following steps: 1. placing water and citric acid into a stirring device to be heated to 60 DEG C; 2. opening the stirring device, adding the iron powder, slowly heating to 80 DEG C, keeping the temperature, stirring and reacting to generate ferrous citrate; 3. cooling the ferrous citrate obtain in step 2 to 40 DEG C, adding hydrogen peroxide for oxidizing until no ferrousion exists; 4. introducing ammonia to neutralize the ferrate compound obtained in step 3 to the pH value more than or equal to 7, filtering, removing impurities and concentrating to be in a pasty shape; and 5. placing the concentrated matter obtained in step 2 into an oven for drying at the temperature of 80 DEG C. The invention has the advantages of adopting the iron powder to replace ferrous sulphate, using the hydrogen peroxide as oxidant and adopting scientific proportioning and production process, thus avoiding chloridion and sulfate ion and other impurities from being carried in, preventing from generating ferric hydroxide intermediate products which are difficult to dehydrate and wash, greatly simplifying production processes, reducing production cost and improving production efficiency of the ammonium ferric citrate.

The invention provides a fluorogenic culture medium of Enterobacter sakazakii, a test kit and a test method thereof, and relates to a method for testing microbe and a composition used by the method. The fluorogenic culture medium comprises the compositions as follows: 8 to 20 grams of peptone, 4 to 7 grams of beef extract powder, 4 to 7 grams of sodium chloride, 1.0 to 2.0 grams of cholate, 12 to 20 grams of agar, 0.05 to 0.5 grams of X-a-glucopyranoside, 0.01 to 0.04 grams of Na2CO3, 0.3 to 2.0 grams of ferric ammonium citrate, and 0.3 to 2.0 grams of sodium thiosulfate. The test kit consists of the fluorogenic culture medium of Enterobacter sakazakii, an enriched liquid A ,namely buffer peptone water culture medium, and an enriched liquid B, namely modified lauryl sulfate pancreas peptone broth. The test kit is configured simply, and the test method has high sensitivity in detection, so the method is suitable for treating large flux samples.

The invention discloses a synthetic method and an application for a water-soluble nitrogen-iron co-doped carbon dot, belonging to the fields of science and application of nanometer materials. The preparation method provided by the invention comprises the following steps: with ammonium ferric citrate as a carbon source and urea as a nitrogen source, dissolving the ammonium ferric citrate and the urea in deionized water, performing a one-step hydrothermal reaction under a closed condition, after an obtained product is cooled, removing free Fe<3+> from the obtained product with NaOH so as to obtain a pale yellow transparent solution, subjecting the solution to dialysis treatment, and carrying out freeze-drying so as to obtain the N-Fe co-doped carbon dot. The synthetic method provided by theinvention has the advantages of simple required operation, cheap and easily-available raw materials, low requirements on equipment and good repeatability. The N-Fe co-doped carbon dot prepared by using the synthetic method provided by the invention has the following advantages: water solubility is good; photoluminescence properties are excellent; the yield of fluorescence quantum is high; the N-Feco-doped carbon dot is successfully applied to ion detection; the N-Fe co-doped carbon dot is broadened in detection range and reduced in detection limit during detection of the metal ion Fe<3+>; andthe N-Fe co-doped carbon dot has great application prospects in the aspects of detection of Fe<3+> in sewage, drinking water and blood, etc.

The present invention discloses a nitrogen-doped graphitization carbon encapsulation iron nanoparticle preparation method, which comprises: dissolving ammonium ferric citrate and dicyanodiamide in water, uniformly mixing, heating, removing the solvent to obtain solid powder, placing the solid powder in a quartz boat, placing into a tube type furnace provided with a quartz tube, introducing an inert gas, heating to a temperature of 500-1100 DEG C, maintaining for 0.5-7 h, cooling to a room temperature, treating the obtained solid for 12-36 h in an acid solution at a temperature of less than 100 DEG C, and carrying out filtration, water washing and drying to obtain the target material. According to the present invention, in the material, the size of the iron nanoparticles is 1-20 nm, the iron loading amount is 2-20 wt%, and the nitrogen doping amount is 1-10 wt%; the material has the high electrocatalysis activity when the material is applied for the proton exchange membrane fuel cell cathode oxygen reduction reaction; and the used precursor of the present method is inexpensive, the preparation process is simple, and the large-scale preparation can be achieved.

The invention discloses a solid-state culture medium for benefiting long-term storage of haematococcus pluvialis algae. The solid-state culture medium is characterized by being prepared from the following components in every liter of the culture medium: 1.3-1.4g of sodium nitrate, 0.13-0.15g of sodium carbonate, 0.15-0.25g of magnesium sulfate, 0.05-0.10g of dipotassium phosphate, 0.009-0.019g of ammonium ferric citrate, 0.010-0.050g of citric acid, 0.025-0.035g of potassium sorbate, 0.001-0.010g of ethylene diamine tetraacetic acid, 0.000222-0.001000g of zinc sulfate, 0.00286-0.00586g of 0.00286-0.00586g of boric acid, 0.0018-0.0036g of manganese chloride, 0.000494-0.000894g of cobalt nitrate, 0.00039-0.00089g of sodium molybdate, 0.000079-0.000150g of copper sulfate, 0.1-1.0g of sodium acetate, 15-17g of agar powder, 0.025-0.050g of biotin, 2-5ml of vitamin B1 and 5-10ml of vitamin B12. The invention aims to provide a novel formula and the preparation method of the haematococcus pluvialis solid-state seed-conservation culture medium to solve the problems that reproduction of haematococcus pluvialis is inhibited by the existing formula, growth factors are not sufficient or excessive and are easily polluted by bacteria, and the like, so that the effect of prolonging the preservation period of haematococcus pluvialis algae can be achieved.

The invention discloses a method for extracting nostoc polysaccharide. Said method includes the following steps: firstly, adopting dipotassium hydrogen phosphate, magnesium sulfate, calcium chloride, citric acid, ammonium ferric citrate, disodium EDTA, sodium carbonate and minor element solution A5 to prepare culture liquor of nostoc according to a certain ratio; then controlling temp. light intensity and deration condition of the culture liquor to make culture of nostoc; third ste, harvesting nostoc; fourth ste, extracting nostoc polysaccharide; and fifth step, purifying, harvesing and drying nostoc polysaccharide. Said invention method is easy to implement, its operation is convenient.

The invention discloses a bifidobacterium and lactobacillus mixed fermentation medium. The formula of the bifidobacterium and lactobacillus mixed fermentation medium comprises the following ingredients: 0.5-2 g / L of water-soluble fish meal, 1-5 g / L of water-soluble soybean meal, 2-8 g / L of high-nitrogen corn steep liquor dry powder, 30-50 g / L of high-nitrogen syrup yeast powder, 10-20 g / L of glucose, 1-2 g / L of lactose, 0.1-0.3 g / L of sodium acetate, 2-4 g / L of tween-80, 5-20 mg / L of ammonium ferric citrate, 5-15 mg / L of manganese sulfate and 30-50 mg / L of ferric chloride. The medium is used for mixed culturing of the bifidobacterium and the lactobacillus in a jar, and the viable count is as high as (0.6-2.0)*10<10> cfu / ml. The medium is low in cost and simple in preparation. The mixed fermentation method disclosed by the invention adopts an optimized medium and optimized supplementary material medium ingredients and proportion, and a synergistic effect of the bifidobacterium and the lactobacillus is fully played, thus the production cost is lowered and the utilization rate of equipment is increased.

The invention provides a zeolite controlled-release fertilizer and a manufacturing method for the same. The zeolite controlled-release fertilizer comprises the following raw materials in the parts by weight: 5-15 parts of biochemical potassium fulvate, 30-50 parts of urea, 10-40 parts of monoammonium phosphate, 15-40 parts of inorganic potassium salt, 1-4 parts of magnesium sulphate, 1-4 parts of calcium nitrate, 1-4 parts of zinc sulphate, 10-30 parts of modified zeolite, 2-5 parts of ammonium ferric citrate, 2-5 parts of emathlite, and 1-4 parts of calcium sulphate. The manufacturing method comprises the following steps of: (1) adding the raw materials aforementioned in a crusher, and crushing; (2) performing the operations of steam humidification, granulation and drying on the crushed raw materials to obtain a zeolite controlled-release fertilizer crude product; and (3) screening the zeolite controlled-release fertilizer crude product obtained in the step (2), wherein the oversize product is the zeolite controlled-release fertilizer. Zeolite is used as a carrier for the active ingredients, and the modified zeolite has multi-channel adsorbability, metal ion exchange property, water absorption and water retention property, acid resistance, alkali resistance, heat resistance, potassium fulvate rapid dissolution property, and the like, as well as achieves controlled release by being matched with proper nitrogen, phosphorus, potassium, calcium, magnesium, zinc and the like.

The invention discloses a marine bacteria chromogenic isolation medium and application thereof. The formula of the marine bacteria chromogenic isolation medium comprises the following compositions: 2 to 3g / L of peptone, 0.1 to 1g / L of yeast cream, 8 to 20 g / L of lactose, 8 to 20 g / L of sucrose, 8 to 20 g / L of cellobiose, 0.1 to 1 g / L of sodium thiosulfate, 0.1 to 1 g / L of ammonium ferric citrate, 0.01 to 0.1 g / L of 3-amino-7-dimethylamino-2-methylphenazine hydrochloride and 10 to 20 g / L of agaragar. The marine bacteria chromogenic isolation medium can make bacteria growing positions have different colors, is convenient to detect or separate marine bacteria quickly and simply, and facilitates marine microorganism diversity study.

The invention relates to the field of biomedicine. According to final concentration, the PK cell culture medium consists of the following components in a formula: 3000mg / L-4000mg / L of 4-hydroxyethyl piperazine ethanesulfonic acid, 6000mg / L-7000mg / L of sodium chloride, 3000mg / L-4000mg / L of D-(+)-glucose, 1000mg / L-2000mg / L of sodium bicarbonate, 0.01mg / L-10mg / L of reduced glutathione, 0.001mg / L-10mg / L of ammonium ferric citrate and 0.01mg / L-10mg / L of uracil; and the sodium chloride takes an effect of maintaining osmotic pressure inside the culture medium. By optimizing a conventional formula of the PK cell culture medium, the culture medium disclosed by the invention can save production cost and can improve the efficiency of cell culture, and the culture medium is more suitable for the growth of animal cells. The culture medium disclosed by the invention is applicable to VERO, PK15 and MAC145 cells, and is strong in applicability.

The invention discloses a culture medium and a culture method for culturing amphora ovalis by using wastewater in a canning plant, and the culture medium and the culture method can be used for treating the wastewater in the canning plant with low cost, utilizing wastes and obtaining microalgae with important bait value. The amphora ovalis traditionally cultured by adopting a Liao's improved culture solution and an open runway pool is slow in growth, low in yield, easy to contaminate and low in benefit, whereas aerated culture with transparent 1.5cm<3> cylindrical food-grade plastic drums is capable of realizing low cost and quick growth, avoiding pollution contamination and is easy to operate; the wastewater in the canning plant, sodium silicate, ammonium ferric citrate, ammonium molybdate, potassium chromate, fish meal, sodium carboxymethyl cellulose, L-arginine, potassium dihydrogen phosphate, medical stone meal, 920-type plant growth substance, vitamin S-3 solution, M-F trace element solution, sodium thioglycollate and the like are added in the culture medium, namely organic fertilizers and inorganic fertilizers are used together, so that the nutrition is more comprehensive and balanced, the growth rate of the amphora ovalis is greatly improved, and the yield is improved by 420%.

The invention provides a culture solution composition capable of culturing chlorella. The culture solution composition is characterized by being prepared from, by weight, 0.01%-0.02% of naphthalene acetic acid, 70%-75% of urea, 3.5%-4.5% of sodium nitrate, 3.5%-4.5% of anhydrous calcium chloride, 9%-12% of magnesium sulfate heptahydrate, 4%-5% of dipotassium phosphate, 0.8%-0.9% of ammonium ferric citrate, 0.8%-0.9% of citric acid, 2%-3% of anhydrous sodium carbonate, 0.1%-0.2% of ethylenediaminetetraacetic acid disodium, 0.3%-0.4% of boric acid, 0.2%-0.3% of tetrahydrate manganese chloride, 0.02%-0.04% of zinc sulfate heptahydrate, 0.04%-0.06% of sodium molybdate dihydrate, 0.01%-0.02% of copper sulfate pentahydrate and 0.005%-0.007% of cobalt nitrate hexahydrate.

The invention belongs to the field of crop fertilizers and in particular relates to a special fertilizer for enhancing the originally ecological flavor of pineapple. The special fertilizer is prepared from urea, monopotassium phosphate, potassium sulfate, calcium humate, magnesium amino acid chelate, zinc amino acid chelate, manganese amino acid chelate, ammonium ferric citrate and an aroma enhancement inductive agent. According to the special fertilizer, the contents of nitrogen phosphorus and potassium nutrients can be reasonably proportioned according to the fertilizer needing characteristics of the pineapple during growth, medium trace elements such as calcium, magnesium, zinc, manganese and iron, required by the fruit development and growth period of the pineapple, are added, the growth and development of the pineapple are improved and the yield of the pineapple is improved; the aroma enhancement inductive agent is added in the special fertilizer, so that the conversion efficiency of amino acid in the pineapple body can be improved, the catalytic activity for synthesizing the key enzyme by use of the aromatic ester substances is promoted, the content of the aromatic ester substance in the pineapple is increased, and the originally ecological flavor of the pineapple is rich; when the special fertilizer is applied in the fruit growth maturation period of the pineapple, the output of the pineapple is improved, the originally ecological flavor of the pineapple is increased and the special fertilizer has high market application value.

The invention provides a recycled three-in-one cleaning agent for ferrous sulfide passivation, sulfur-ammonia-amine deodorization and stress corrosion resistance of austenitic stainless steel polythionic acid. The three-in-one cleaning agent can be recycled, and comprises the following components in percentage by mass: 0.5-10.0% of oxidizing agent, 1.0-10.0% of carbonate, 1.0-10.0% of iron sulfate, 0.1-5.0% of EDTA sodium salt, 0.1-1.0% of ethylenediamine tetrahydrophosphate, 0.5-5.0% of sodium polyphosphate, 0.5-5.0% of polyacrylate, 0.5-5.0% of surface active agent, 0.1-1.0% of defoaming agent, 0.1-1.0% of ammonium ferric citrate, and 48.0-95.7% of water. The oxidizing agent is preferentially hydrogen peroxide; the carbonate is preferentially sodium bicarbonate; the surface active agentis preferentially OP-10 and LAS; and the PH value is controlled within 5.0-10.0. The three-in-one cleaning agent can remove the ferrous sulfide generated in a petrochemical plant to prevent spontaneous combustion caused by the ferrous sulfide, meanwhile, can remove the sulfur-ammonia-amine odor and prevent the stress cracking of the plant due to corrosion of austenitic stainless steel caused by generation of polythionic acid, and has such advantages as convenience in operation, low use level, low cost, safety, high efficiency and environmental protection.

The present invention relates to hippophae rhamnoides calcium compound solid drink and a preparation method thereof. The compound solid drink comprises the following raw material components in parts by weight: 40-60 parts of hippophae rhamnoides fruit powder, 20-40 parts of a sweetener, 10-20 parts of collagen, 5-10 parts of calcium aspartate, 1-3 parts of magnesium phosphates, 0.3-0.5 part of ammonium ferric citrate and 0.1-0.2 part of an acidulant. The solid drink is prepared by the following steps: 40-60 parts of the hippophae rhamnoides fruit powder, 20-40 parts of the sweetener, 10-20 parts of the collagen, 5-10 parts of the calcium aspartate, 1-3 parts of the magnesium phosphates, 0.3-0.5 part of the ammonium ferric citrate, and 0.1-0.2 part of the acidulant are weighed, the weighed materials are mixed evenly, the mixture is canned, and the canned mixture is prepared into the object products. Compared with the prior art, the compound solid drink has the advantages of being good in calcium absorption, obvious in immunity enhancement, stable in product storages, etc.

The invention discloses an iron substrate plating neutral stripping agent. Nitrate is optimally selected as an oxidizing agent for stripping nickel, chromium, copper, tin and other plating on an iron substrate, and as generally, nitrate is relatively stable in property and relatively low in toxicity, so that when the stripping agent provided by the invention is used, exhaust gases and waste water are not generated, and the stripping agent is non-corrosive to a device and highly friendly to the environment; at the same time nitrate is matched with citrate, potassium sodium tartrate and a proper amount of polyhydroxyl aldehyde, so that the speed for stripping the nickel plating on the iron substrate is effectively increased, the plating stripping is achieved in a short time, and the production cycle is shortened while the substrate is not damaged; and particularly, calcium nitrate is optimally as the oxidizing agent, and ammonium ferric citrate is adopted as a first complexing agent, and calcium nitrate and ammonium ferric citrate are combined with mannitol and sodium diacetate, so that the stripping rate of the nickel plating on the iron substrate can be effectively increased. Relative to the prior art, the stripping agent has the advantages of being free of corrosion, poisonous gases and pollution, high in efficiency, environment-friendly in use, easy and convenient to maintain, and the like.

The invention relates to a vegetal bait culture method. Algae seeds carry out primary and secondary culture, the culture used seawater carries out sterilization treatment, the primary culture lasts 7 to 10 days, and steps for adding nutrient salt kangwei ingredients into per 100 mL materials are as follows: preparing first solution with the following ingredients by weight ratio: 50g of ferric trichloride, 1.8g of manganese chloride, 168g of boric acid, 225g of tetrasodium ethylenediamine tetraacetate, 100g of monopotassium phosphate and 500g of sodium borate; preparing second solution with the following ingredients by weight ratio: 0.5g of zinc butter, 0.5g of cobalt chloride, 0.25g of ammonium molybdate and 0.5g of bluestone; pouring the second solution into the first solution; adding vitamin B1 and B12; carrying out secondary culture for 0.5 to 1 month; and maintaining the air inflation, wherein the added culture mother solution comprises the following ingredients by weight ratio: 50g of sodium nitrate, 5g of monopotassium phosphate, 0.5g of ferric ammonium citrate and 100ml of disinfected seawater. When the vegetal bait culture method of the invention is adopted, the production cost can be lowered, and the yield can be improved.

The invention discloses a preparation method of a graphene-hollow carbon nanocage composite material used for oxygen reduction reaction. The method includes: dissolving ammonium ferric citrate solid powder in a graphene oxide solution, and conducting heating or freeze drying to remove a fusing agent so as to obtain solid powder; placing the solid powder in a quartz boat, then placing the quartz boat into a quartz tube equipped tube furnace; introducing an inert gas of certain flow velocity, then raising the temperature to 600-1000DEG C, keeping the state for 1-5h, and then performing cooling to room temperature; treating the obtained solid in an acid solution under 60-100DEG C for 12-36h, and carrying out filtering, washing and drying, thus obtaining the graphene-hollow carbon nanocage composite material. The precursor employed by the method has a low price, the preparation process is simple and convenient, and can realize large-scale preparation.

The invention discloses quinoa cereal meal replacement powder and a preparation method thereof. The quinoa cereal meal replacement powder is prepared from the following raw materials in parts by weight: 30-40 parts of quinoa, 7-9 parts of polished round-grained rice, 7-8 parts of coix seeds, 6-8 parts of broom corn millets, 6-8 parts of buckwheat, 3-4 parts of red adzuki beans, 3-4 parts of blackbeans, 1-3 parts of mung beans, 2-3 parts of Chinese wolfberry fruits, 2-4 parts of lucid ganoderma, 2-3 parts of Chinese yam, 2-3 parts of haws, 2-4 parts of water chestnuts, 1-2 parts of spinach, 1-2 parts of beet, 4-5 parts of kiwi fruits, 4-5 parts of pineapples, 2-3 parts of calcium gluconate, 2-3 parts of ammonium ferric citrate, 3-5 parts of maltodextrin powder and 3-5 parts of skim milk powder. The quinoa cereal meal replacement powder prepared by mixing the quinoa which serves as a main raw material with multiple cereals, fruits, vegetables and dairy products has a unique taste and rich nutrition for balanced nutrition supplement, can be used for effectively reinforcing the body function performance and regulating the immunity, improving the body stress and preventing diseases andobesity, is suitable for people of all ages for natural health maintenance, and is especially suitable for people losing weight.

The present invention discloses a coloring culture medium for detecting food-borne pathogenic Yersinia, wherein the culture medium contains soybean peptone, yeast powder, sodium chloride, sodium oxalate, agar, a beta-riboside chromogenic substrate, a beta-galactoside chromogenic substrate, esculin, ammonium ferric citrate, bile salt No.3, cephalosporin, novobiocin, and the balance of water. According to the present invention, the coloring culture medium has characteristics of simple formula and convenient preparation operation, can be used for the separation and the detection of food-borne pathogenic Yersinia, and further has advantages of specificity, high efficiency, rapidness, low cost, simple result determination, wide application prospect, and the like.

The invention relates to the field of wastewater treatment, and discloses a flaky iron molybdate photocatalyst for dye wastewater treatment and a preparation method thereof. The preparation method comprises the following preparation processes that (1) all raw materials including 24 to 28 parts of ammonium ferric citrate, 30 to 34 parts of sodium molybdate, 30 to 41 parts of deionized water and 5 to 8 parts of protein are prepared into mixed reaction liquid according to the mass parts; (2) after the pH value in the mixed reaction liquid is regulated to 4 to 8, water bath heating is performed; wet gel is prepared; (3) heating and drying are performed to obtain dry gel; (4) the dry gel is heated to 600 to 800 DEG C, and treatment is performed for 2 to 3h; grinding is performed to obtain the flaky iron molybdate photocatalyst for dye wastewater treatment. Compared with an ordinary molybdate photocatalyst, the prepared iron molybdate photocatalyst has the advantages that the specific surface area is large; the dispersibility is high; the sunlight utilization rate is high; the quantum efficiency is high; the photocatalytic activity is very high; the performance is stable; contaminants inthe printing and dyeing wastewater can be fast and effectively degraded.

The invention provides a culture medium formula of artificially cultivated armillaria mellea and a cultivation method, and relates to the technical field of cultivation of armillaria mellea. By the culture medium formula of artificially cultivated armillaria mellea, non-forestry land cultivation of the armillaria mellea is realized. The formula consists of the following components in parts by weight: broad-leaved tree bits 8-15 parts, auricularia residues 30-40 parts, cotton seed hulls 8-15 parts, wheat bran 3-8 parts, rice bran 3-8 parts, corn flour 1-3 parts, ammonium ferric citrate 0.001-0.005 part, propylene glycol alginate 0.001-0.005 part, glucose 2-6 parts, gypsum 5-10 parts, lime 2-7 parts, protein peptides 2-7 parts, biotamin 5-10 parts, and an organic fermentation material 5-10 parts. The cultivation method comprises the following steps: fungi bag making, inoculating, spawn runing management and fruiting management. By the physical mode, agaric wastes are cultivated artificially, an armillaria mellea primordium inducement agent is prepared, formation of buds of the armillaria mellea is promoted, and the problem of non-forestry land fruiting of the armillaria mellea is solved.

The invention discloses a method for preparing a poultry feed additive compound mineral substance, and belongs to the technical field of poultry feed additives. The mineral substance comprises the flowing elements: calcium hydrophosphate, sodium chloride, potassium citrate, potassium sulfate, magnesium sulfate, manganese carbonate, ammonium ferric citrate, zinc carbonate, copper carbonate, potassium iodate, sodium selenite and potassium chromium sulfate. In the compound mineral substance, the potassium iodate replaces the conventionally added potassium iodide to serve as the source of iodine element, the iodine element loss caused by decomposition and volatilization of the potassium iodide is prevented, the function of keeping the iodine element for a long time can be realized, and the production, processing, sales and feeding are facilitated. The addition amount of the mineral substance in the conventional poultry feed is 1 / 1,000-2 / 1,000; and experiments show that the mineral substance can stimulate the appetite of livestock and promote growth.

The invention relates to the field of composite fertilizers, and concretely relates to a long-acting sustained-release composite fertilizer rich in organic materials. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of 1250-2000 mesh diatomite, 12-15 parts of ammonium humate, 8-10 parts of triple superphosphate, 5-6 parts of pumace, 6-8 parts of bean dregs, 4-5 parts of grass meal, 5-7 parts of lees vinegar, 1-2 parts of white sugar, 0.5-1 part of xylose, 18-20 parts of urea, 5-6 parts of borax, 8-10 parts of sodium carboxymethylcellulose, 6-8 parts of redispersible latex powder, 2-3 parts of ammonium ferric citrate, 8-10 parts of ammonium dihydrogen phosphate, 0.1-0.2 part of calcium stearate and 4-5 parts of an auxiliary agent. The raw materials of the composite fertilizer are rich in multiple organic materials, so that the soil activity is effectively improved, and the adverse influence of long-term fertilization on soil is improved; dual cladding on nutrient is formed by utilizing diatomite and a sustained-release coating agent in the production technology, so that nutrient is not easy to loss, the utilization rate is greatly improved; and release of nutrient is long-acting and efficient, and sufficient nutrient and balanced soil environment help to improve both crop output and quality, and the plantation benefit is increased.

The invention discloses a method for extracting desert algae polysaccharide. Said method includes the following steps: firstly, adopting sodium nitrate, dipotassium hydrogen phosphate, magnesium sulfate, calcium chloride, citric acid, ammonium ferric citrate, disodium EDTA, sodium carbonate and minor element solution A5 to prepare culture liquor of desert algae according to a certain ratio; then controlling temperature, light-intensity and aeration condition of the culture liquor to make culture of desert algae; the third step is preparation of desert algae powder; The fourth step is extraction of desert algae polysaccharide; and the fifth step is purification, harvest and drying of desert algae polysaccharide; and the fifth step is purification, harvest and drying of desert algae polysaccharide. Said method is easy to implement, convenient in operation.

The invention discloses a chlorella pacifica medium which contains the following components: 100-120 mg / L of NaNO3, 10-12 mg / L of NaH2PO4, 2.5-3.5mg / L of ammonium ferric citrate, 10-12 mg / L of Na2EDTA10, 0.5-1 mg / L of terbium salt, 0.0001-0.01 mg / L of brassinolide, 0.006mg / L of VB1, 0.05mg / L of VB12, 23 micrograms / L of ZnSO4.4H2O, 178 micrograms / L of MnCl2.4H2O, 10 micrograms / L of CuSO4.5H2O, 7.3 micrograms / L of Na2MoO4.2H2O and 12 micrograms / L of CoCl2.6H2O. During the culture process of chlorella, survival rate of chlorella is high, and growth rate of chlorella is fast.

The invention discloses a solid substrate and a medium to cultivate cordyceps militaris with effective diseases prevention function, in particular relates to the technical field of cultivate cordycepsmilitaris. The adopted solid substrate is prepared by the materials with the following parts by weight: 85 to 98 parts of cereal, 1 to 5 parts of silkworm chrysalis powder and 1 to 10 parts of oak tree leaf powder. The medium consists of the solid substrate and nutrient solution. The mass ration of the solid substrate and the nutrient solution is 1:(1.1-1.6). The nutrient solution consists of sugar, yeast extract, silk peptide, ammonium ferric citrate, potassium dihydrogen, magnesium sulfate, thiamine and water. The medium added with oak tree leaf powder to cultivate cordyceps militaris can effectively inhibit the growth of contaminated bacteria in the growth of cordyceps militairis. As a result, the incidence of diseases is obviously reduced. The cultivated cordyceps militaris are neat and stout, of which the average yield is 21% higher than the cordyceps militaris cultivated in normal medium. In conclusion, the prospect of applying the solid substrate and the medium to cultivate cordyceps militaris is good.

A composition useful for crosslinking phosphate esters in hydrocarbon gels used in formation fracturing performs especially well in cold temperatures, such as temperatures lower than (−)20° C. Methods of making the crosslinking composition and the gel are described; also methods of fracturing subterranean formations. Specific forms of ferric sulfate and ferric ammonium citrate are useful as ingredients of the crosslinking composition.