53results about How to "Efficient absorption and utilization" patented technology

The invention relates to a composition comprising vitamins and mineral substances. The composition comprises the vitamins and the mineral substances, wherein the vitamins include vitamin A, vitamin C, vitamin D3, vitamin E, vitamin B1, vitamin B2, vitamin B6, vitamin B12, folic acid, nicotinic acid amide and pantothenic acid, and the mineral substances include calcium, iron, zinc, and selenium. According to the composition, the amounts of the vitamins and the mineral substances are reasonably proportioned strictly according to the needing amounts of a human body; the mineral substance iron is supplied by ferrous fumarate, so that the destroy on the active substances, such as vitamins, by the addition of the inorganic iron can be effectively prevented; the mineral substance selenium is provided by selenium enriched beer yeast, the toxic and side effects of chemical selenium (such as sodium selenite) on the human body and intestines and stomach stimulation are eliminated, and therefore the selenium can be absorbed and utilized by the human body more efficiently and safely.

The invention provides a special organic fertilizer for walnuts, which is prepared from, by weight, 45-55 parts of weathered coal, 5-10 parts of wheat bran, 5-10 parts of pepper powder residues, 20-30 parts of straws, 1-2 parts of urea, 50-60 parts of water, 10-12 parts of trichoderma culture solution, 1-2 parts of phosphorus sources, 0.01-0.02 part of iron sources, 0.01-0.02 part of zinc sources, 0.01-0.02 part of copper sources, 0.01-0.02 part of manganese sources and 0.05-0.1 part of boron sources. The invention further provides a preparation method for the organic fertilizer. The organic fertilizer has the advantages that raw material sources are wide, a production method is simple, biological activity of products is high, sufficient comprehensive nutrition is provided for walnut trees and the like, and enables the walnut trees to grow robustly and be higher in stress resistance and disease resistance, fruit setting rate of the walnut trees can be increased, empty shell rate of the walnuts is decreased, and the special organic fertilizer for the walnuts has the advantage of no chemical residue.

The invention discloses an artificial culture method of Zn-enriched cordyceps militaris mycelia and a culture medium thereof; according to weight percentage, the formulation components of the culture medium comprise: 1.0 to 3.0 percent of glucose, 0.5 to 1.0 percent of peptone, 0.1 to 1.0 percent of yeast extract, 1.0 to 2.0 percent of agar powder and the rest of water, and the pH value of the culture medium is 5.0 to 7.5. The artificial culture method comprises the steps of test tube slant surface strain culture (activation), test tube liquid strain culture, triangular flask liquid seed culture, seeding tank culture, fermenter culture, plate-frame filtration, crashing, drying in vacuum, crashing and leading the mycelia into powder. The operation is simple, the culture period is short, the yield of mycelia is high, no pollution and waste are produced, and the method has the function of supplementing zinc, thus being capable of carrying out industrial production.

Liquid organic fertilizer comprises the following ingredients: 19% of soluble nitrogen-phosphorus-potassium raw material, 30% of humic acid agent, 20% of alginic acid agent, 10% of amino acid agent, 10% of fulvic acid potassium agent, 5% of soil conditioner and 6% of chelated medium trace element agent. The liquid organic fertilizer has the benefits that the liquid organic fertilizer can quickly supplement soil nutrition, allows a plant root system to be capable of directly absorbing organic matter and chelated medium trace elements, improves crop quality, avoids physiological diseases of crops, is green and safe, achieves agricultural production and income increase, is convenient to use and pollution-free, has good prevention and treatment effects on continuous cropping diseases and soil-borne diseases, breaks soil hardening, improves a soil microorganism ecological environment, increases the organic matter, fixes nitrogen, dissolves phosphorus and potassium, reduces the usage amount of inorganic fertilizer and protects the environment.

The invention discloses an artificial culture method of a zinc-rich cordyceps militaris fruit body and a culture medium thereof. The culture medium comprises the following components by weight portions: 40-65 portions of rice, 0.5-2.0 portions of a yeast extract, 60-85 portions of water and 0.01-1.0 portion of zinc sulfate with the natural PH value. The artificial culture method comprises the following steps: preparation of the culture medium, canning and sterilization; cooling and inoculation; culture; collection of the fruit body; drying and granulation. The method has the advantages of simple operation, short culture period, high yield of the fruit body, no pollution, no waste and zinc supplement function, and the method is suitable for industrialized production.

The invention provides a synergistic additive for a fertilizer and application of the synergistic additive, and relates to the synergistic technology for fertilizers, in particular to a synergistic additive for a fertilizer and application of the synergistic additive. The synergistic additive for the fertilizer comprises, by weight, from 1 to 20% of polyglutamic acid, from 1 to 10% of sodium citrate, from 10 to 30% of diatomaceous earth and from 40 to 60% of zeolite powder. The synergistic additive is a polymerized and purified substance of amino acid, can be biologically degraded into amino acid monomers to be absorbed by plants, and is free of residues and pollution, and the fertilizer produced by the synergistic additive is applicable to various crops and soils in various regions.

The invention relates to a selenium-rich shiitake mushroom production process, and relates to the technical field of fungus cultivation. According to the invention, a shiitake mushroom thallus production process is carried out with the steps of material pretreatment, material preparation, pot sterilization, blending with shiitake mushroom cultivar, shiitake mushroom stick preparation and bag removing, and mushroom fruiting management. During the production process, an organic selenium source is added, and the selenium source is pretreated. According to the invention, the organic selenium source is added to a shiitake mushroom cultivation medium, such that shiitake mushroom quality is improved. Toxic and side effects and gastrointestinal irritation to human bodies caused by direct use of chemical selenium are eliminated, and selenium in the shiitake mushrooms can be more highly efficiently and more safely absorbed and utilized by human bodies. Greater economic benefit can be brought to mushroom farmers, such that the edible fungus industry can be promoted to a large-scale, normalized and standardized level.

The invention relates to a solar-driven coaxial traveling wave starting and standing wave refrigerating device, which comprises a traveling wave thermoacoustic engine and a standing wave thermoacoustic refrigerating machine with coaxial structures, and also comprises a resonatron which is connected between the traveling wave thermoacoustic engine and the standing wave thermoacoustic refrigerating machine, a solar light-accumulating device and a solar light-transmitting device which are arranged in front of the traveling wave thermoacoustic engine, a resonant cavity which is arranged on the rear of the standing wave thermoacoustic refrigerating machine, and a fused salt annular box which is coated on the outside of a heat exchanger on the hot end of the traveling wave thermoacoustic engine. Due to organic axial arrangement of the traveling wave thermoacoustic engine and the standing wave thermoacoustic refrigerating machine, the solar-driven coaxial traveling wave starting and standing wave refrigerating device has the advantages of compact structure and high efficiency; fused salt which is coated on the outside of the heat exchanger on the hot end of the engine is an ideal thermal capacitance, thereby having the advantage of constant heating temperature; and a light-transmitting enclosed body on the front end of the engine uses quartz glass, thereby having the advantages of high-efficiency transmittance and prevention of low-temperature internal infrared radiation from passing through.

The invention provides a culturing method of selenium-enriched maggots, which adds selenium-enriched yeast in the seed-corn maggot feed of germ-free seed-corn maggots, and the weight ratio of the selenium-enriched yeast and the seed-corn maggot feed is 1 / 3-5; and selenium-enriched yeast maggot feed is put in a spawning plate of the seed-corn maggots, and the weight ratio of the selenium-enriched yeast and the seed-corn maggot feed is 1 / 9-11. Because the selenium-enriched yeast is added during the breeding and culturing processes of the seed-corn maggots and the maggots, the invention obtains germ-free selenium-enriched maggots containing high content of selenium, obviously improves the functional value of the maggots, and simultaneously, selenium element, protein and polysaccharide are organically integrated and transformed into bioselenium, and thereby eliminating the toxic side effect and intestines and stomach stimulation of chemical selenium, and the selenium can be more efficiently and more safely absorbed and utilized.

The invention belongs to the technical field of production of dairy products, and in particular, relates to an efficient-absorption oligopeptide formula goat milk powder and a preparation method thereof. The oligopeptide formula goat milk powder is composed of the components in parts by weight: 500-800 parts of raw goat milk, 5-20 parts of corn oligopeptide, 7-25 parts of wheat oligopeptide, 8-24 parts of soybean peptide, 0.5-7 parts of phytosterol, 0.5-8 parts of inulin, 0.05-0.2 part of calcium carbonate, 0.05-0.15 part of ferrous sulfate, 0.05-0.1 part of zinc sulfate, 0.05-0.1 part of VA, 0.01-0.05 part of VB, 0.05-0.15 part of VC, 0.05-0.15 part of VD, and 0.05-0.1 part of VE. The oligopeptides, minerals, vitamins and inulin are added based on the pure goat milk, so the prepared goat milk powder has more comprehensive nutrition, and is more in line with the digestion and absorption characteristics of middle-aged and aged people; the nutrients can be absorbed and used efficiently; the nutritional value is higher than that of ordinary goat milk powder, and the biological utilization rate of the nutrient substances in the goat milk powder formula is increased. The goat milk powder helps the middle-aged and aged people enhance the body immune functions, resists hypertension, hyperlipidemia and hyperglycemia and prevents senile chronic diseases.

The invention relates to a selenium-rich mushroom bran feed, a preparation method of the feed, and a method for cultivating selenium-rich barley pests by using the selenium-rich mushroom bran feed. Selenium-rich mushroom bran is taken as a main raw material of the selenium-rich mushroom bran feed; the content of the selenium-rich mushroom bran in the selenium-rich mushroom bran feed is 5-30wt%; the content of selenium in the selenium-rich mushroom bran is 50-250mg / kg; the ultimate content of selenium in the selenium-rich mushroom bran feed is 5-20mg / kg. The preparation method comprises the following steps of: mixing raw materials to obtain a mixture, grinding the mixture, and then drying, grinding, sieving, mixing, grinding and conditioning the mixture. When the selenium-rich mushroom bran feed is used for cultivating the selenium-rich barley pests, barley pest larvae or pupae with high selenium content is obtained, wherein the selenium content of the selenium-rich barley pest larvae is 0.5-2.0mg / kg and the selenium content of the selenium-rich barley pest pupae is 0.5-1.5mg / kg. Through conversion on the selenium-rich mushroom bran by the barley pests, the pollution of mushroom sticks to environment can be effectively avoided, meanwhile the utilization rate of an inorganic selenium additive added in the mushroom sticks is enhanced and therefore, the waste of the selenium element under the condition of the shortage of selenium supply in China is avoided.

The invention discloses a zinc-rich yeast refined extract and a preparation method of the zinc-rich yeast refined extract. The zinc-rich yeast refined extract comprises dry materials and water, wherein the dry materials comprise, by mass, 0.1%-0.7% of zinc element, 20%-70% of protein, 5%-25% of nucleic acid, and the balance impurities, wherein the molecular weight of the protein and the molecular weight of the nucleic acid are 20-500KD. According to the zinc-rich yeast refined extract and the preparation method of the zinc-rich yeast refined extract, the zinc element in the zinc-rich yeast refined extract enables zinc to be combined with protein and polysaccharide which are in yeast bodies in an organic mode through the fact that the yeast absorbs and converts the zinc element during the growing process, and therefore the stimulation function of inorganic zinc to skin is eliminated, the phenomena that chelation, sedimentation and the like between the inorganic zinc and other compositions in cosmetics are possible to happen to result in unpredictable consequences are eliminated too, the zinc existing under the state can be absorbed and utilized by a human body more efficiently and more safely.

The invention discloses functional solanaceous vegetable nutrition fertilizer. The functional solanaceous vegetable nutrition fertilizer comprises, by mass, 2-4 parts of humic acid, 0.3-0.6 parts of polyglutamic acid, 10-15 parts of N, 5-8 parts of P2O5, 26-30 parts of K2O, 0.1-0.3 parts of Zn, 0.1-0.5 parts of Ca, 0.1-0.3 parts of Mg and 0.1-0.3 parts of B. The functional solanaceous vegetable nutrition fertilizer satisfies various nutrient demands of solanaceous vegetables and improves soil fertility. The invention provides a preparation method of the functional solanaceous vegetable nutrition fertilizer. The preparation method comprises crushing N, P2O5 and K2O, mixing the material powder to obtain a first mixture, crushing Zn, Ca, Mg and B, mixing the material powder to obtain a second mixture, mixing the second mixture, sodium humate, a polyglutamic acid stock solution and an inorganic matrix to obtain a third mixture, mixing the first mixture and the third mixture to obtain a forth mixture, carrying out granulation on the forth mixture, and drying, cooling and screening the particles to obtain the nutrition fertilizer. The preparation method has simple processes and a short production period.

The invention relates to a method of quickly decomposing green straws of a plant and preventing and controlling root knot nematode disease of flue-cured tobacco. The method comprises the following steps: selecting oil radish with a root knot nematode disease resistant gene as a green straw of green manure; screening four microorganisms which have preventing and controlling effects and decompose the green straw efficiently to the root knot nematode disease; spraying a decomposing fungicide in a full-bloom stage by proportioning the four fungicides at proper concentrations; and turning over anddecomposing the green straw sprayed by the fungicide locally for over 60 days, wherein by accelerating quick and efficient decomposition of the green straw, in the condition of reducing 30% of a chemical fertilizer, organic matters of rhizosphere soil of flue-cured tobacco cultivation are degraded quickly, and primary nutrients: nitrogen phosphorus and potassium are full. The method is obvious inpreventing and controlling effects to the root knot nematode disease in the flue-cured tobacco cultivation process, and the tobacco leaf output value is improved obviously. The invention relates to the simple method which decomposes the green straw quickly, increases organic matters and nutrients of soil effectively, prevents and controls root knot nematode disease of cultivated crops in the nextstubble and improves the crop output and quality.

The invention discloses a rare earth element-rich coating material and its preparation method and application. The rare earth element-rich coating material comprises 100 parts of starch, cellulose, polyvinyl alcohol, a cross-linking agent, lanthanide rare earth and water, 20-30 parts of a compound modifier and 5-15 parts of a powder filler. The preparation method comprises the following steps: adding starch, cellulose, polyvinyl alcohol, lanthanide rare earth and water into a reaction vessel and stirring and mixing, heating to 60-80 DEG C for gelatinization, adding the cross-linking agent, keeping the temperature at 85-95 DEG C and reacting for 2-3 h to obtain an emulsion, adding the compound modifier and the powder filler in a corresponding proportion into the removed emulsion at room temperature, stirring and mixing uniformly to obtain the rare earth element-rich coating material. By adjusting composition of the coating material and ratio of the coating material and a granulated fertilizer, a slow and controlled release fertilizer with different release periods can be prepared. The slow and controlled release fertilizer is prepared according to the invention. Raw materials have a wide source and are cheap and easily available; and the preparation method is simple and is easy for industrial production.

The invention discloses a selenium-rich sheep farming method, and belongs to the technical field of selenium-rich sheep farming. The selenium-rich sheep farming method comprises the following steps of1, young sheep farming; 2, postweaning sheep farming; 3, adult sheep farming. The postweaning sheep farming is safe, reliable and scientific, and the sheep obtained through farming are healthy and strong in physique, high in disease resistance, high in feed digesting and absorbing ability and rich in nutrient and have healthy bodies, the rate of biologically transforming feed is high, the selenium content is moderate, and the selenium-rich sheep farming method has good economic values and medicinal values and has a very good market popularization prospect.

The invention discloses a method for producing water-soluble small-molecule organic matter liquid fertilizer through an acid hydrolysis method. The method is characterized by comprising the following steps that fermented industrial wastewater is taken as raw materials, firstly subjected to a hydrolysis reaction through composite acid and then oxidized through basic oxides, centrifugal separation is performed, supernatant is taken, and then the water-soluble small-molecule organic matter liquid fertilizer is obtained. According to the method, the organic wastewater is taken as raw materials, and through acid hydrolysis of the composite acid, oxidation of the basic oxides and pH value regulation, the obtained liquid fertilizer can be efficiently absorbed and utilized by plants.

The invention relates to an environment-friendly macrobrachium rosenbergii functional compound feed as well as a preparation method and application thereof, and belongs to the technical field of aquaculture feeds. The feed comprises the following components in percentage by weight: 2%-4% of fermented soybean meal, 6%-10% of cottonseed meal, 6%-12% of rice protein powder, 5%-12% of hydrolyzed chicken hemoglobin, 14%-20% of chlorella, 8%-16% of spirulina, 3%-8% of tenebrio molitor protein, 3.8%-4.8% of sunflower meal, 4%-6% of enzymolysis fish soluble powder, 1.5%-2% of hermetia illucens powder, 0.9%-1.1% of rapeseed oil, 1% of schizochytrium limacinum powder, 0.9%-1.1% of lysolecithin and the balance of water. The feed comprises the following components in percentage by weight: 14-16% of wheat, 4-6% of kelp powder, 1.5% of monocalcium phosphate, 0.6-0.8% of vitamin premix and 0.9-1.1% of mineral premix. The feed is balanced in nutritional value, the breeding effect is not obviously different from that of a feed with normal fish meal and soybean meal content, but the feed remarkably reduces emission of nitrogen and phosphorus in the breeding process of macrobrachium rosenbergii, is a low-carbon and green functional feed product, and can effectively improve economic benefits and ecological benefits.

The invention discloses blakeslea trispora rich in selenium and carotenoids, a carotenoids fermentation product and a fermentation method of the blakeslea trispora rich in selenium and carotenoids andrelates to the technical field of selenium-rich fermentation. The preparation method of the blakeslea trispora rich in selenium and carotenoids comprises a step of adding selenium salt into a fermentation culture medium inoculated with blakeslea trispora. The preparation method is capable of preparing the blakeslea trispora rich in selenium and carotenoids. Through the method, the condition of the fermentation method is optimized; the selenium salt is added in a process of culturing the blakeslea trispora; selenium is absorbed and utilized when growing the blakeslea trispora, so that seleniumis organically combined with proteins and polysaccharides in the blakeslea trispora and is converted into biological selenium; the content of selenium in the blakeslea trispora is increased.

The invention provides a method for quickly forming gardens by young tea trees. The method comprises the following steps that the young tea trees are transplanted in December of the last year to February of the next year, the tea trees are shaped and trimmed for the first time after being transplanted, and the distance between cut openings and the ground is 15-20 cm; foliar fertilizer is sprayed when buds of the tea trees germinate to 1-20 mm, and topping is carried out on new shoots of the tea trees after the new shoots of the tea trees grow to 15-30 cm; the roots of the tea trees are fertilized at the end of October to the beginning of December, and urea topdressing is performed on the roots of the tea trees 5-20 days before spraying of the foliar fertilizer; shaping and pruning are carried out on the tea trees for the second time in spring of the next year, wherein the pruning height is increased by 18-20 cm from the cut openings of the last time to remove main branches; in the third year, when young shoots of the tea trees grow to 15-25 cm each time, light pruning is conducted; and the tree width of the tea trees reaches 1.2 m or above after three years. According to the method provided by the invention, a specific culture medium is not needed, the fluffy surface amplitude of the tea trees cultured for three years can reach 1.2 m or above, and the yield and quality of tea leaves are higher.

The invention belongs to the technical field of pet health-care products, and particularly relates to a stomach-invigorating and digestion-promoting tablet for pets and a preparation method thereof. The health-care food is prepared from the following components in percentage by mass: 1 to 10 percent of fructus crataegi, 1 to 10 percent of rhizoma dioscoreae, 1 to 10 percent of fructus hordei germinatus, 0.01 to 5 percent of selenium-enriched yeast, 0.01 to 5 percent of vitamin B complex, 0.01 to 5 percent of lipase, 0.01 to 5 percent of amylase, 0.01 to 5 percent of cellulase and the balance of auxiliary materials, and the total amount is 100 percent. According to the invention, hawthorn, Chinese yam, malt, selenium-enriched yeast, multivitamins, lipase, amylase and cellulase are used as active ingredients, the tablet has good prevention and improvement effects on gastrointestinal tracts of pets, the tablet prepared by the method has good food calling effect, the dosage of the raw materials and various auxiliary materials reaches the optimal proportion, and the product has strong stability and high absorption and utilization rate.

The invention discloses a fermentation production method of a nematode-resistant plant straw alkaline organic fertilizer and an application thereof, the nematode-resistant plant straw alkaline organicfertilizer is obtained by adding a microbial agent into oil radish straw powder and stacking and fermenting, and the nematode-resistant plant straw alkaline organic fertilizer is applied to plantingof vegetables, fruits and flue-cured tobaccos; the nematode resistant varieties comprise beet cyst nematodes, meloidogyne incognita, meloidogyne javanica, peanut meloidogyne and meloidogyne northern;the nematode-resistant plant straw alkaline organic fertilizer provided by the invention has dual functions of supplying high-quality nutrients to crops and preventing and controlling root-knot nematode diseases of the crops, and is applied to the crops planted in slightly acidic farming soil, so that soil organic matters are effectively increased, acidified soil is conditioned, the high-quality nutrients are supplied to the crops, under the condition of pesticide removal, the fertilizer has the effect of preventing and controlling the root-knot nematode disease.

The invention relates to an improvement method of vegetable cultivation soil under facility conditions, and belongs to the technical field of soil improvement. The method comprises the steps that an indigenous bacterium agent is applied in facility crop rhizosphere soil, and an intercropping mode of leguminous crops and vegetables is adopted to cooperate with reasonable nitrogenous fertilizer application. A preparation method of the indigenous bacterium agent comprises the following steps that rhizosphere soil of corn / soybean intercropping is collected in a field, air-dried in a shade place after collection and uniformly mixed, expanding propagation is carried out through sorghum and clover, and the indigenous bacterium agent is obtained. The invention aims at further improving an improvement method of vegetable cultivation soil under current facility conditions, providing an economical and safe method for improving vegetable soil, and scientifically and comprehensively proposing a solution, which not only can improve the problem soil under the facility conditions, but also can promote the absorption of nutrient elements such as nitrogen by vegetables, increases the utilization rate of a nitrogenous fertilizer, and reduces the application rate of the nitrogenous fertilizer.

The invention discloses a selenium-enriched arachidonic acid oil product, selenium-enriched mortierella alpina and a preparation method. The preparation method comprises the step of fermentation, wherein selenium salt is added into a fermentation culture medium inoculated with mortierella alpine. The preparation method increases the content of selenium in the mortierella alpine through the optimization and improvement of the addition time and addition process of the selenium salt, and prepares the mortierella alpina rich in selenium and arachidonic acid oil.

The invention relates to a nutrient composition for remarkably promoting efficient absorptionandutilization of a calcium source. The nutrient composition is prepared from decavitamin electron chelatedcalcium and zinc citrate. The decavitamin electron chelated calcium is specific matter prepared according to the specific technical scheme, and is mixed with the zinc citrate at a specific proportionto prepare the composition. Compared with inorganic acid calcium, organic acid calcium, amino acid calcium and other compositions and preparations, the decavitamin electron chelated calcium is adopted as the calcium source of the composition for the first time, and higher biological solubility and availability are achieved. While mutual cooperation between the specific constitutional matter nutrients of the composition is fully considered, accumulation and gastrointestinal tract irritation caused by singlecalcium supplementation are remarkably reduced, and the technical effects that the calcium source is efficiently absorbed andutilized, and multiple nutrients are cooperatively supplemented are achieved.

The invention relates to the technical field of navel treatment, and discloses navel electrothermal powder, and an application method and device thereof. The navel electrothermal powder is mainly prepared by crushing of radix astragali, safflowers, rhizoma corydalis, rhizoma ligustici wallichii, apocynum venetum, common selfheal fruit-spike, caulis polygoni multiflori, platycodon roots, radix stemonae, common coltsfoot flower and licorice roots. The navel electrothermal powder disclosed by the invention can effectively prevent and treat abdominal obesity / central obesity and prevent and treat symptoms including flatulence, indigestion, lower abdomen cold pain, dysmenorrhea, menstrual period lumbago, cold hands and feet, limb drowsiness, fatigue and weakness, cough, asthma and the like caused by the abdominal obesity / central obesity, and has the characteristic of being free from infusion, free from injection, free from medicine taking, free from acupuncture and moxibustion, free from cupping, free from skin scraping therapy, and simple and convenient to operate; and besides, oral administration is not needed, so that damage of traditional Chinese medicines to the liver is avoided and reduced; trouble and discomfort in mouth feel caused by decocting medicines and taking medicines orally do not exist; the navel electrothermal powder can be repeatedly used, so that the medicine purchasing cost can be effectively reduced, time and temperature of hot compressing can be autonomously and easily controlled, and the operation is convenient, simple and practicable.

The present invention discloses an organic selenium rich corn germ meal production method which comprises the following steps: (1) fine selecting organic selenium rich corn raw materials; (2) putting the fine selected organic selenium rich corn into a degerminating device to enable the organic selenium rich corn a directional impact under the influence of centrifugal force, and then conducting processes of crushing, separating corn kernels, extracting germs and grinding to separate corn endosperm, germ and brans, and thereby obtaining the organic selenium rich germs, corn grit and corn meal; (3) extracting corn oil in the obtained organic selenium rich germs by aqueous enzymatic extraction, and aging and crushing the remaining corn germ powder into the final organic selenium rich corn germ meal. The organic selenium rich corn germ meal produced according to the present invention is rich in organic selenium and beneficial to human health.

The invention discloses a zinc-rich and efficient slow-release fertilizer for anti-season and pollution-free broccoli. The fertilizer is prepared from components in parts by weight as follows: oyster shells, polylactic acid, polyethylene glycol, expanded pearlite nanopowder, viscous humic acid, fish processing leftovers containing rich protein, brown seaweed, enteromorpha, rice bran, oil meal, bean dregs, zinc-rich yeast, cellulase, compound protease, sodium humate, monoammonium phosphate, potassium chloride, medium trace elements, amino acid liquid fertilizer, mannitol, glycerinum, sodium alginate, a proper amount of hydrogen peroxide, a proper amount of ammonia water and a proper amount of water. The fish processing leftovers containing rich protein, the brown seaweed, the enteromorpha, the rice bran, the oil meal and the bean dregs cooperate with nutrient substances, a coated slow-release fertilizer is prepared after enzymolysis and fermentation, the fertilizer contains rich fermented macromolecular organic matter and inorganic matter elements, contains rich nutrients, is convenient to absorb and utilize by the broccoli, can promote the growth of the broccoli and guarantee pollution-free cultivation of the broccoli and can be widely applied and promoted.