642 results about "Inorganic selenium" patented technology

The selenium-rich rice cultivating process includes conventional cultivation and features that the selenium-rich agent is sprayed once during the earing up and flowering period of rice. The selenium-rich agent comprising selenium-containing inorganic compound and phosphate is dissolved in water of 50-90 times and sprayed to leaf of rice during the earing up and flowering period of rice. In case of rainy day after spraying, replenished selenium-rich agent is sprayed timely. The sprayed inorganic selenium will be converted completely into natural organic selenium, and the produced selenium-rich rice is non-toxic, and has the health functions of preventing common cold, preventing and treating hypertension and myocardial pathological changes, etc.

The invention relates to an organic rich-selenium bio-fertilizer and a preparation method thereof. The organic rich-selenium bio-fertilizer comprises the following components in percentage by weight: 10-40% of livestock / poultry excrement, 20-50% of straw powder or humus soil, 20-40% of 80-mesh selenium ore powder containing 500 ppm of selenium, 0.02-0.07% of microbial soil repairing agent and 0.01-0.03% of zymocyte. The preparation method comprises the following steps: thoroughly and uniformly stirring the raw materials and stacking for fermentation; when the temperature reaches 40 DEG C, starting to turn the pile once every two days; when the temperature reaches 65 DEG C and hyphae appear, turning the pile; stacking for fermentation for three days; and crushing, screening, packing and storing the product in a storehouse. The method provided by the invention mainly thoroughly decomposes the raw materials containing various nutrients at a high temperature under the effect of microorganisms, converts inorganic selenium into an organic selenium fertilizer for the absorption by plants and animals, and produces rich-selenium organic products.

A selenium yeast product for use in food, dietary supplements or drugs containing significant and homogeneous amounts of easily digestible organically bound selenium, in which the content of selenium compounds is in the range of between 1000 and 1600 ppm, and in which product the content of 1-selenomethionine constantly constitutes at least 55% of the total selenium content, and in which product the content of selenium in inorganic selenium compounds does not exced 1% of the total selenium content. Furthermore, a method of preparing a selenium yeast product for use in food, dietary supplements, or drugs whereby said yeast is cultivated on a minimal medium under aerobic conditions, while nutrients are added to the yeast during the cultivation to an extent corresponding to the consumption of said nutrients in the yeast; glucose and / or maltose are the sole sources of carbon in the feeding medium.

The invention relates to a method for preparing red elemental selenium by utilizing a super-selenium resistance microorganism. The preparation method is characterized by comprising the following steps of: a, breeding a target bacterial strain; b, preparing a selenium-contained culture medium; c, inoculating and culturing; d, preparing the red elemental selenium; e, producing the red elemental selenium; and f, harvesting the product. According to the method for preparing the red elemental selenium by utilizing the super-selenium resistance microorganism, the super-selenium resistance microorganism capable of normally surviving in a high-selenium environment is adopted, wherein the super-selenium resistance microorganism has the characteristic of reducing inorganic selenium into the red elemental selenium, can be used for preparing low-toxicity nanometer organic selenium and is wide in application prospect.

The invention discloses a method for culturing selenium-enriched Cordyceps militaris, which is to increase the selenium content in a culture medium to 50mg / L by using organic selenium yeasts instead of inorganic seleninic acid and sodium selenite, which infect the growth of hyphae, so as to ensure the selenium content in the cultured selenium-enriched Cordyceps militaris reaches 35 to 50mg / L. In the invention, the organic selenium yeasts which exert the lest inhibition effect on the growth of the Cordyceps militaris are adopted to increase the selenium content in the culture medium to 50mg / l, the selenium content in the cultured selenium-enriched Cordyceps militaris reaches 35 to 50mg / kg, which is 2 times higher than that of the Cordyceps militaris cultured in a culture medium added with inorganic selenium, and the yield of Cordyceps militaris is high.

The invention discloses a high-yield culture technology of selenium-enriched peanuts. By spraying a mixed nutrient solution with microelements such as boron and molybdenum and photosynthetic bacteria on the surfaces of leaves during different peanut growth periods and meanwhile spraying a selenium-enriched nutrient solution with a certain number of selenium elements, the effects of high yield, increased yield and stabile selenium element content are achieved for the peanuts, the yield per mu of the peanuts is improved by 30% through combination with a scientific and reasonable sowing and field management method; in addition, by mixing farmyard organic fertilizers, inorganic fertilizers and a certain amount of ammonium selenate for decomposition and stack retting before peanut sowing and meanwhile broadcasting the mixture before turning and plowing so as to combine soil fertilization with leaf surface fertilization, especially combine organic selenium application in soil with inorganic selenium application on leaf surfaces, the selenium content of the peanuts is increased, the selenium content of the peanuts produced through the technology is stabilized within the range from 0.18 mg / kg to 0.2 mg / kg, and the health care effect of the peanuts is greatly improved.

A novel strain of lactic acid bacteria was found to be heat resistant and able to grow in a sulfur-limiting medium (SLM) containing a high concentration of sodium selenite. The microorganism is a non-spore forming and Gram-positive coccus, which is identified with >90% confidence using the API biochemical and sugar fermentation tests, ribotyoing and 16S rRNA sequencing as Pediococcus pentosaceus SP80. In the current study, P. pentosaceus SP80 grown on SLM containing 250 ppm sodium selenite produced both organic and inorganic forms of selenium. These selenium compounds can be separated using an anion exchange chromatography technique. The concentrations of selenium detected in the organic and inorganic fractions were 4.34 and 21.7 ppm, respectively. Selenium-enriched bacteria are useful as a source of selenium for supplementing the diets of animals and humans. Animals fed efficacious amounts of the selenium-enriched bacteria show improved feed conversion rates and higher levels of glutathione peroxidase (GPx) activity in heart, kidney and liver tissues indicating an increased absorption and retention of selenium over control diets.

The invention provides a preparation method and application of a selenium-enriched cadmium-resistant foliar fertilizer special for rice .The preparation method of the selenium-enriched cadmium-resistant foliar fertilizer special for the rice comprises the following steps that sodium selenite, zinc sulfate, manganese sulfate and ferrous sulfate are dissolved in water and prepared into an original mother liquid, wherein the concentration of sodium selenite ranges from 30 g / l to 60 g / l; the original mother liquid is mixed with an amino acid solution of which the mass concentration ranges from 15% to 20%, shaking chelating is conducted, and a chelating liquid is obtained; the chelating liquid and a single silicic acid aqueous solution are mixed to be uniform to be prepared into a mixed liquid; sodium alkyl benzene sulfonate is added, the mixture and filtrate obtained through saccharose alcohol fermentation are stirred at 25 DEG C to 35 DEG C for secondary chelating, and the selenium-enriched cadmium-resistant foliar fertilizer special for the rice is obtained .By means of the preparation method and application of the selenium-enriched cadmium-resistant foliar fertilizer special for the rice, 90% or above of inorganic selenium is converted into organic selenium such as selenomethionine and selenocystine, the poisoning risk is eliminated, the absorption conversion rate of selenium is increased, the raw material amount is reduced, the cost is reduced, and the rice has a good cadmium-resistant property.

The invention relates to a planting method of selenium-rich passiflora edulis. The variety of the planted passiflora edulis is Tainung No1. The planting method comprises steps as follows: land selection, land preparation, field planting, shelving, training and pruning, fertilizer and water management, field management and pest control. According to the planting method of the selenium-rich passiflora edulis, a selenium-rich fertilizer fermentation broth obtained through fermentation of inorganic selenium fertilizer is sprayed to leaf surfaces and fruits of the passiflora edulis, the average single fruit weight of the produced passiflora edulis is 63 g, the maximum single fruit weight is 125 g, the fruit juice is reddish yellow and has strong fragrance, the acidity is 2.14%, the highest selenium content can reach 12 mu g / kg, the sweetness reaches 23% Brix, the fruit juice rate is up to 34%, the color and luster are bright, the yield is high, pollution is prevented, and five crops are harvested every year.

The invention discloses a method for producing selenium rich agricultural product, which comprises following steps: spraying selenium rich solution onto plant leaves, diluting said selenium rich solution into solutions with different concentrations, then spraying it onto leaves, converting inorganic selenium into organic selenium by employing special technology in grain, vegetable and fruit, providing selenium for human body through food chain. The invention is characterized by simple and easy operation, high selenium availability ratio, low cost, selenium rich crop of 80-235 ug / kg.

The invention provides a breeding method of selenium enriched black soldier fly larvae. Inorganic selenium or organic selenium is added into feed of the black soldier fly larvae and the concentration of selenium content in the feed of the black soldier fly larvae is controlled at 10 to 80 mg every kg. The selenium is added into the breeding feed of the black soldier fly larvae to obtain the high selenium content of black soldier fly larva products and accordingly the functional value of the black soldier fly larvae is significantly improved. The selenium is combined with protein and polysaccharide organically in the black soldier fly larvae after bioconversion and accordingly the toxic and side effect and the gastrointestinal stimulation of the chemical selenium are eliminated and the selenium can be absorbed and utilized efficiently and securely.

The invention relates to an edible fungi culture medium additive, preparation and an application thereof. The edible fungi culture medium additive is prepared by raw materials rich in organic selenium, wherein, selenium content is 2.0-10.0mcg / g, and the raw materials rich in organic selenium comprise a corncob containing 0.2-30.0mcg / g organic selenium and a maize straw containing 0.5-50mcg / g organic selenium. The invention further provides a method for preparing the edible fungi culture medium additive: pulverizing the raw materials rich in organic selenium to obtain powder. The edible fungi cultured by the edible fungi culture medium additive of the invention has the advantages of stable content of the organic selenium, improved yield of the edible fungi by over 10%, low residual quantity of inorganic selenium and better safety.

The invention relates to a production method of selenium-enriched pork. A feed fed when live pigs are bred is a selenium-enriched nutritional feed processed by corn, wheat bran, soybean meal, fish meal, feed grade calcium hydrophosphate, mountain flour, trace elements and selenium-enriched ryegrass hay, wherein the content of the hay in the feed is not lower than 15wt%, and the selenium content in the hay is not less than 1,000mug / kg. The selenium-enriched ryegrass hay is obtained by drying ryegrass the reaped or harvested leaf surfaces of which are sprayed and applied with a sodium selenite nutrient solution the concentration of which is not lower than 200ppm. In the invention, the selenium-enriched pork is obtained by the two-time biotransformation of inorganic selenium and has ruddy meat color, tender quality, fragrant taste and no any fishy smell of a pigpen, the selenium content in each kilogram of pork is not less than 80mug, and the lowest selenium demand of a human body can bemet as long as an adult eats more than 100g of selenium-enriched pork every day.

The invention discloses a nano-selenium-containing amino acid foliar fertilizer and a preparation method thereof. The nano-selenium-containing amino acid foliar fertilizer is prepared from such raw materials as molasses, animal hair, selenium dioxide, sulfuric acid, copper sulfate, manganese sulfate, zinc oxide, ferrous sulfate, ammonium carbonate, ammonium molybdate, urea, potassium chloride, boric acid, fulvic acid, a surfactant, ethylene glycol, sodium carbonate, quick lime or calcium hydroxide, phosphoric acid and water. The preparation comprises the steps of reducing selenium dioxide by use of the molasses to obtain nano-selenium, hydrolyzing the animal hair into an amino acid solution, and then performing the reactions of neutralization, complexing, emulsification and the like to obtain the nano-selenium-containing amino acid foliar fertilizer. According to the nano-selenium-containing amino acid foliar fertilizer, the problem of transforming inorganic selenium into nano-selenium and the problem of recycling waste both are solved; the fertilizer is capable of improving the water retention and drought resisting capability of plants and increasing the content of the organic selenium element content in crops; the preparation method of the fertilizer is mild in reaction conditions, simple in process, relatively low in production cost and prone to industrial production, and has excellent economic benefit, social benefit and ecologic benefit.

The invention relates to a method for detecting a selenium form, elemental selenium and total selenium. Chromatographic separation systems and atomic fluorescence spectrophotometers in different instrument manufacturers are combined into a HPLC-HG-AFS system, and a method for analyzing the selenium form and measuring elemental selenium and inorganic selenium and total selenium in a sample can be performed. The measurement result is accurate; by measurement on the total selenium and inorganic selenium, the content of organic selenium can be indirectly obtained by adopting a method of subtracting the inorganic selenium from the total selenium, and a new technology for measuring the total selenium, inorganic selenium and organic selenium through a form analysis method can be formed. The method is high in portability and convenient and flexible to use and has high popularization and application values.

The invention discloses an organic selenium crop nutrient and a preparation method for the same. The organic selenium crop nutrient comprises the following raw materials in parts by weight: 0.5-1.5 parts of molasses, 5-15 parts of soybean meal amino acid, 6-9 parts of urea, and 0.04-0.1 part of sodium selenite. The preparation method for the organic selenium crop nutrient comprises the following steps of: oscillating all raw materials for 24-72 hours in the conditions of a rotation speed of 120-200 rpm and a temperature of 35-40 DEG C, and sieving to obtain a filtrate, namely, the organic selenium crop nutrient. The content of organic selenium in the organic selenium crop nutrient disclosed by the invention is greater than 0.3 g / L. Additionally, according to the organic selenium crop nutrient and the preparation method disclosed by the invention, harm brought by the too high dosage of an inorganic selenium fertilizer to a human body, and fertilizer damage phenomena of seedling burning, leaf spots and the like due to the inappropriate dosage of the inorganic selenium fertilizer are overcome.

The invention discloses an organic selenium-supplementing feed additive and preparation and a using method thereof. The feed additive is prepared by the following steps of: adding chitosan with deacetylation degree of 70 to 100 percent into 0.5 to 2 volume percent of diluted acid with stirring at the temperature of between10 and 60 DEG C to obtain 0.5 to 10 percent acid solution of chitosan; adding solution of inorganic selenium into acid solution of chitosan, wherein the mass of inorganic selenium is 1 / 6 to 1 / 2 time that of the chitosan; and reacting for 1 to 12h and separating, washing the obtained solid matter by using distilled water for many times until selenium ions cannot be detected, and drying and crushing to obtain chitosan selenium chelate. The chitosan selenium serving as the feed additive is applied to feeds for livestock, poultry and aquatic animals and is effectively absorbed and utilized in the animals by using proper stability and dissolution performance thereof, so that disease resistance, production performance and meat quality of the animals are obviously improved. The chitosan selenium has the advantages of little toxicity, high biological availability, small addition amount, and capability of saving resources and protecting the environment, so that the feed additive is a safe and effective environment-friendly feed additive.

The invention provides a selenium-enriched fermentation liquor foliar fertilizer. The foliar fertilizer is characterized by being prepared by mixing a selenium-containing compound of which the volume fraction by mass is not larger than 5.5g / L and an absorption-enhancing fermentation liquor, wherein the selenium-containing compound is sodium selenite or amino acid chelate selenium. By means of the foliar application of the selenium-enriched fermentation liquor foliar fertilizer, the problems of selenium fixing and loss caused by the application of the selenium compound into soil can be well solved, and a selenium element can be absorbed rapidly and effectively by plants. Meanwhile, inorganic selenium is transformed into organic selenium, so that the selenium content of crops is effectively increased, and very high practicability is achieved.

The invention discloses a bioorganic-inorganic compound fertilizer containing nano-selenium and a preparation method of the bioorganic-inorganic compound fertilizer. The bioorganic-inorganic compound fertilizer containing nano-selenium comprises crop straws, selenium dioxide, animal waste, municipal sewage sludge, urea, monoammonium phosphate or diammonium phosphate, potassium chloride, a silicon-potassium fertilizer, cellulase, lactobacillus, candida utilis, bacillus subtilis, bacillus licheniformis, sodium borate, an alkaline agent, phosphoric acid, water and the like. The bioorganic-inorganic compound fertilizer is prepared by the following steps: preparing nano-selenium through reduction reaction; fermenting; burdening; crushing; pelleting; drying; sieving; packaging; and the like. According to the bioorganic-inorganic compound fertilizer, the problem that inorganic selenium is difficultly converted into nano-selenium and the problem of resource utilization of waste are simultaneously solved; the fertilizer is capable of increasing the soil fertility and preventing soil from hardening; the crop quality is improved; and the method disclosed by the invention is mild in reaction condition, simple in process, relatively low in production cost and easy for industrial production, and has good economic benefits and social benefits.

The invention discloses a method for culturing pleurotus geesteranus uniformly rich in selenium by using a mixed selenium source. The method is characterized by comprising steps of: mixing selenium-enriched culture material additive in an amount which is 1 to 10 percent of the total weight of a dry culture material in the dry culture material, and culturing according to the common culture method to obtain the pleurotus geesteranus uniformly rich in selenium, wherein the selenium-enriched culture material additive has the total selenium content of 5 to 300mg / kg; the particles with the particle size of 0.005 to 5.0mm in the selenium-enriched culture material additive are in multi-particle-size regional distribution, and particles with the particle size of 1.0 to 5.0mm at least account for 10 percent of the total weight of the additive; particles with the particle size of 0.005 to 0.1mm at least account for 40 percent of the total weight of the additive; the mixed selenium source is a mixture of an organic selenium source and an inorganic selenium source; the inorganic selenium source is one or a combination of two of sodium selenate and sodium selenite; and the organic selenium source is selenious yeast. The pleurotus geesteranus prepared by the method has high utilization rate and stable selenium content in different batches; in addition, by the method, selenium pollution is avoided, and the method is easy to operate and easy to promote.

The present invention provides a selenium-rich rice compound fertilizer. The compound fertilizer comprises the following raw materials in parts by weight: 400-600 parts of a nitrogen-phosphorus-potassium fertilizer, 50-70 parts of nitro humic acid, 2-8 parts of organic trace elements, 3-7 parts of inorganic trace elements, 10-20 parts of biomass slag, and 1-2 parts of inorganic selenium salt. The organic trace elements comprise a sucrose sugar complex and a humic acid complex. The selenium-rich rice compound fertilizer provided by the present invention has the advantages that the selenium-rich rice compound fertilizer is high in rice yield, high in plant disease resistance and suitable to be applied in large area; rice ears are relatively large and heavy; and because selenium-rich rice contains selenium that is essential for human bodies and animals, the selenium-rich rice is high in nutritional value and beneficial for health.

The invention relates to a special selenium-rich liquid fertilizer for moso bamboo shoots and a preparation method of the fertilizer. The liquid fertilizer comprises an organic and inorganic mixed selenium source prepared from potassium nitrate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, boric acid, EDTAZnNa2, EDTAMnNa2, NaFeEDTA, sodium silicate, ammonium molybdate, 5-nitroguaiacol sodium salt, sodium dodecyl benzene sulfonate, sodium benzoate and a selenium-rich yeast, wherein the organic and inorganic mixed selenium source is formed by preparing the selenium-rich yeast into a seed and then carrying out fermentation enrichment culture, inactivation and decomposition in an inorganic selenium containing culture medium. The preparation method comprises the following steps of dissolving effective components according to a certain sequence; regulating a pH value; and treating until constant volume is achieved. The special selenium-rich liquid fertilizer for the moso bamboo shoots, which is disclosed by the invention, has the advantages of comprehensive nutrient element, reasonable and safe formula, high fertilizer utilization ratio, no environmental pollution and the like, is convenient to fertilize, improves the utilization efficiency of a selenium element and increases the selenium content of bamboo shoots by using an organic selenium source and ensures the safety in fertilizer use and selenium-rich moso bamboo shoot eating.

The invention discloses a method for planting medicago sativa rich in selenium and relates to the technical field of pasture planting. The method comprises the following steps: 1, soil preparation and fertilization; 2, seed management; 3, sowing; 4, field management; 5, cutting treatment; 6, harvesting. According to the method, the medicago sativa rich in selenium is planted and obtained by spraying compound selenium fertilizer onto the leaf surfaces, inorganic selenium is converted into organic selenium through in-vivo conversion of pasture, and the safety and absorbability after the pasture is eaten by livestock are high; through the application of herbicide and insecticide, the pasture output can be increased, and the pasture quality can be improved, thereby economic benefits are increased.

The invention discloses a preparation method and an application of a selenium-enriched organic water-soluble fertilizer. The preparation method comprises the following steps: dissolving, acidifying, chelating, cooling, mixing, compounding and concentrating, wherein before the dissolving step, the transformation of organic selenium is carried out, which comprises the steps of adding water to sodium selenite to obtain a sodium selenite solution, soaking semen cassia in warm water, placing in a greenhouse until semen cassia becomes green, spraying the sodium selenite solution onto semen cassia buds once every day, after 10-25 days, picking buds and mashing to obtain organic selenium. The invention also discloses an application of the selenium-enriched organic water-soluble fertilizer. By the absorptive transformation effect during the germination process, inorganic selenium is transformed into organic selenium, the prepared selenium-enriched organic water-soluble fertilizer is high in content of selenium; by scientifically applying the selenium-enriched organic water-soluble fertilizer to crops, the drought resistance and cold resistance of the crops can be increased, the content of chlorophyllin in the crops is effectively increased, the phenomenon of decay is decreased, the contents of nutrients and yield of the crops are greatly improved and the content of selenium in agricultural products is effectively increased.

A selenium-enriched fertilizer liquid is produced according to the steps as follows: coal ash granules are washed down from a coal flue by water; the obtained coal ash granules are aired, crushed and sieved through an eighty-mesh sieve; the coal ash after sieving is added into extract liquid which contains sodium hydroxide and sodium dithionite; sodium hyposulfite is added into the solution; the solution after being disposed by the sodium hyposulfite is put into a sedimentation barrel to be placed statically for 24 hours, and clear liquid at the upper layer is taken; the clear liquid at the upper layer which is obtained from last step is neutralized by vitriol, the pH value is adjusted to be 8 to 8.5, and the selenium-enriched fertilizer liquid is obtained. The method of applying the selenium-enriched fertilizer liquid to the production of the selenium-enriched agricultural products is that before the agricultural products are harvested, the selenium-enriched fertilizer liquid is diluted till 100ppm to 200ppm and sprayed at the agricultural products. The invention adopts the coal ash which is washed down from the coal flue by water to extract inorganic selenium, the manufacturing method of which is simple with very low cost, and the selenium content of the agricultural products can be improved effectively by spraying the manufactured selenium-enriched fertilizer liquid at the crop.

The invention discloses a method for cultivating oyster mushrooms. The method includes the following steps of mother culture making, stock culture making, preparing and applying of standard selenium liquid, cultivating culture making and mushroom producing management. According to the method for cultivating oyster mushrooms, inorganic selenium is biologically converted into organic selenium facilitating absorption of the human body; meanwhile, the content of the selenium of the oyster mushrooms is increased, the food-drug health caring value of the oyster mushrooms for people is increased, the yield is increased by about 30% on the basis of the original yield, the yield is increased, the enrichment amount of the selenium in every 100 g of fresh mushroom bodies can be 0.1-0.2 g, and the quality of the oyster mushrooms is improved.

A method for cultivating Se-enriched garlic cloves and garlic bolts features that beside conventional cultivation steps including sowing, thinning out seedlings, applying fertilizer, etc or use of water culture procedure, the sodium selenite (or selenate) and nutritive liquid are mixed to obtain the liquid selenium fertilizer, which has different concentrations of inorganic selenium for different growth phases. Said garlic cloves and garlic bolts feature their health-care function.

The invention relates to a detection method of selenium form in an aquatic product, and belongs to the technical field of aquatic product detection. The selenium form in the aquatic product is extracted by oscillating with a super constant-temperature mixer and measured by a high performance liquid chromatography-hydride generation atomic fluorescence spectroscopy combined morphological analysis technology, the extracting solution is separated by an anion chromatographic column, different forms of selenium are eluted successively by a moving phase, hydrogenation is carried out on the elution solution through a potassium borohydride reducing agent and hydrochloric acid to generate a hydride which enters an atomizer and is used in combination with atomic fluorescence for analysis and measurement, so that a more complete biological property of the selenium is provided. The experiment condition is reasonable, the detection data are accurate and reliable, the sample recovery rate is 88.79-94.88% and the degree of precision is less than 5%. The method is high in sensitivity, low in interference and simple in sample pretreatment, can be used for accurately measuring inorganic selenium, selenite and selenate as well as organic selenium, selenocysteine and selenomethionine and detecting selenium form in aquatic product.

A cultivation method for high yield of selenium enrichment wheat is provided. Selenium fertilizer is mixed with seeds and applied during periods of straw pulling and flowering to enable wheat to produce physiological and biochemical reactions, so inorganic selenium can be absorbed and converted into organic selenium capable of being absorbed by human bodies; and enriched wheat grain become selenium enriched wheat. Through lab tests, content of selenium content of selenium of wheat grains can reach as high as 0.2mg / kg to 0.3mg / kg, a regulated value for human body health; wheat disease resistance property is enhanced according to scientific selenium fertilizer; 12 to 18% of wheat is increased compared with common wheat according to experts' test; and great benefit is produced to national grain production; and the method is worthy of promotion.

The invention relates to a making method of organic selenium pine pollen belonging in biotechnological field with the purpose of providing the making method that can amplify utility of the pine pollen and improve nutrition and medicinal value of the organic selenium pine pollen, which is characterized by the following: converting inorganic selenium to be the organic selenium; using straw of agronomic crop as base material to add absorbent and water-loss agent to produce the organic selenium agent; getting the organic selenium pine pollen with 10-50mg Se / kg selenium through reasonable cultivating and biotransformation. In comparison with the general, the organic selenium pine pollen improves the nutrition and medicinal values greatly with selenium that is 100-500 times as high as the general, which can be adopted in fields of food, health products, drug and medical treatment extensively because of the selenium being organic state with more stable and secure. In addition, the technique can be controlled to operate easily and the raw material can be purchasing easily with the low production cost and high added value of the product.