57results about How to "Selenium content is stable" patented technology

The invention discloses a selenium sustained-release edible fungus additive for selenium-rich culturing of edible fungus. The selenium sustained-release edible fungus additive is characterized by comprising the following components in parts by weight: 1-20 parts of selenium source, 950-1000 parts of attapulgite clay or modified attapulgite clay and 5-40 parts of beta-cyclodextrin, wherein the modified attapulgite clay is one-dimensional nano-state attapulgite clay which is modified by hydrogen type ion source (H<+>) irradiation. The composition achieves a stable release condition after 2-3 hours in a solution state, the selenium concentration in the solution state can achieve 40-60% of the original selenium concentration in the selenium sustained-release additive, and the stable release condition can be sustained for 90-120 days.

The invention relates to a method for producing an organic selenium-rich Biluochun tea. The method comprises the following steps of: (1) mixing a nanometer selenium plant nutrient and soil in a proportion of 1:3-6 to obtain a selenium-rich nutrient; (2) during November to December, applying the selenium-rich nutrient into the tea garden; (3) during February to March of the next year, after the tea leaf is germinated, additionally applying the selenium-rich nutrient into the tea roots in the tea garden. The Biluochun tea produced by the method has the advantages that the tea leaf is rich in the organic selenium, therefore the form is safe; the selenium content in the tea leaf is stable, achieves more than 0.25mg / g, and conforms to the standard of the selenium-rich tea specified by the national ministry of agriculture, and the organic selenium content accounts for more than 80%, therefore the tea has double health care function.

The invention relates to a method for producing an organic selenium-rich Huangshan Maofeng tea. The method comprises the following steps of: (1) mixing a nanometer selenium plant nutrient and soil to obtain a selenium-rich nutrient; (2) during November to December, applying the selenium-rich nutrient into the tea garden; (3) during February to March of the next year, after the tea leaf is germinated, additionally applying the selenium-rich nutrient into the tea garden. The Huangshan Maofeng tea produced by the method has the advantages that the tea leaf is rich in the organic selenium, therefore the form is safe; the selenium content in the tea leaf is stable, achieves more than 0.25mg / g, and conforms to the standard of the selenium-rich tea specified by the national ministry of agriculture, and the organic selenium content accounts for more than 80%.

The invention discloses high-selenium wheat. According to the high-selenium wheat, 5-150mg / kg of selenium and organic selenium being more than or equal to 70% are contained in the grains of wheat. The invention also discloses a production method of the high-selenium wheat, which is as follows: the high-selenium wheat is obtained by applying 15-30kg of nano selenium plant nutrient agents in each mu of soil during the sowing period, the wintering period, the period of seedling establishment, the elongation period and the pustulation period. The nano selenium plant nutrient agents are produced by Suzou SeTek Technology Co. Ltd. According to the high-selenium wheat, the selenium content is extremely high, the selenium mainly exists in an organic selenium form so as to be beneficial to the absorption of people or animals, the standardization of the selenium content is high, the demands of industrial production can be met, and the selenium content in a preliminarily processed product is stable.

The invention discloses selenium-enriched corn stalks and a production method thereof. The content of selenium in the selenium-enriched corn stalks ranges from 10 mug / kg to 200ug / kg, and the content of organic selenium is larger than or equal to 70%. The production method includes: when each of corn seedlings subjected to final singling grows 5-6 visible leaves, using 100ml of selenium-enriched biological agent diluted with water 500 times of the biological agent in volume to spray the corn leaves for each acre; when each plant grow 13-14 visible leaves before sprouting of corn male ears, using 300ml of the selenium-enriched biological agent diluted with the water 500 times of the biological agent in volume to spray the corn leaves for each acre; and obtaining selenium-enriched corn stalks after harvesting. Inorganic selenium is converted into organic selenium by microbiological treatment, the organic selenium is then sprayed to plant leaves, and accordingly environment pollution caused by traditional direct supplement of inorganic selenium, such as sodium selenite and the lie, is avoided, produced corn stalks are stable in selenium content and can be used as selenium-enriched animal feed and edible fungus culture medium, safe and selenium-supplementing livestock and edible-fungus products are provided for human, and the selenium-enriched corn stalks have positive significance of improving human selenium level and preventing and treating diseases.

The invention discloses an organic selenium-rich dendrobium candidum. Selenium content of the organic selenium-rich dendrobium candidum is 6.3-20 mg / kg, wherein the organic selenium content is greater than or equal to 80 percent. The invention also discloses a cultivation method of the organic selenium-rich dendrobium candidum. The cultivation method comprises the following steps of: adding a selenium source into a dendrobium candidum matrix; adding a microbial fertilizer and humic acid while adding the selenium source; and constituting a selenium-rich nutrient by the selenium source, the microbial fertilizer and the humic acid, wherein the selenium-rich nutrient comprises the components in percentage by weight: 5-20 percent of the selenium source, 5-20 percent of the microbial fertilizer and 1-2 percent of the humic acid; and the selenium source can be one or more, which are mixed at a random ratio, of selenate, selenite, selenium-containing ore processed products and nano-selenium nutrient (Suzhou Xigu Science and Technology Co., Ltd., model of XGP001A). The selenium absorption efficiency is high, and the selenium contents of different batches of dendrobium candidum are stable.

The invention discloses an organic selenium-enriched navel orange and a production method thereof. The total content of selenium in the organic selenium-enriched navel orange is between 5 and 300 mu g / kg, and the ratio of organic selenium to the total selenium is more than or equal to 70 percent. The method comprises the following step of: adding 25 to 300g of nano selenium plant nutrition agent into soil of each plant, namely 1 to 15 kg / mu in a flowering period or a fruiting period of the navel orange. The navel orange is rich in selenium elements, and the whole content is unified. By the method, the proportion of the organic selenium is improved, the problem of the stability of the content of the selenium in navel oranges which grow in different batches in the prior art is solved, the uniformity of the content of the selenium in the navel orange is ensured, and the standardized large-scale production can be realized.

The invention discloses high-selenium alfalfa and a cultivation method and application thereof. 1kg of the high-selenium alfalfa contains 10-2,000mg / kg of selenium, wherein the organic selenium accounts for more than or equal to 70%. The cultivation method of the high-selenium alfalfa comprises the following steps: applying fertilizer including sodium selenite to the alfalfa in alfalfa land before the alfalfa sprouts in spring, wherein 3-600g of sodium selenite is applied to each mu of alfalfa land; or applying fertilizer including sodium selenite to the alfalfa in alfalfa land in a dressing way two months before the alfalfa is cut down each time. The high-selenium alfalfa has stable selenium content and can be used as the selenium-enriched animal feed so that a safe selenium supplementing livestock and poultry product can be provided for people. The cultivation method has high operability, can realize the standardized production and ensure the stable content of selenium in the stems and leaves of the produced alfalfa.

The invention discloses a selenium-rich foliar fertilizer which is prepared from the following raw materials in parts by weight: 20-60 parts of urea, 10-50 parts of potassium dihydrogen phosphate, 10-30 parts of magnesium sulfate, 10-30 parts of potassium sulfate, 10-30 parts of sodium selenite, 10-30 parts of fulvic acid, 100-150 parts of pond sludge, 5-20 parts of rare earth, 0.01-0.5 part of sodium naphthaleneacetate, 5-10 parts of radix isatidis, 10-50 parts of compound auxiliary agent, 10-50 parts of medical stone extract, and 1-5 parts of selenium-rich yeast. The invention also discloses a preparation method of the selenium-rich foliar fertilizer. The selenium-rich foliar fertilizer is reasonable in proportioning of ingredients, is capable of effectively improving the fertilizer utilization rate of plants, promoting nutrient absorption of the plants, improving plant resistance and alleviating diseases, and also helps to improve the selenium content of agricultural products and meets absorption of the selenium element by the human body.

The invention provides a special nutrient for grapes rich in organic selenium, which is prepared by evenly mixing nano selenium plant nutrient, organic phosphatic fertilizer and microbial fertilizer by weight ratio of 2-6:2-4:0.4-1. The invention also provides a method for producing grapes rich in organic selenium, comprising the following steps: in embryonic stage or flowering period of grapes, fertilizing the special nutrient for grapes rich in organic selenium according to an annular furrow application method with the total dosage of 45-150g of selenium per mu, namely, taking the root of the grape as the centre of a circle and furrowing, wherein, the furrow is 50-90 cm away from the root, the width of the furrow is 10-30cm and the depth is 10-20cm; fertilizing the special nutrient for grapes rich in organic selenium into furrows when the grapes are ripe; randomly checking the content of selenium of grape grains, and harvesting grapes with the content of selenium reaching 10-45 mu g / kg. The grape produced according to the method has higher security, and the selenium contained is easier to be absorbed and utilized by human body.

The invention discloses a selenium-rich mulberry leaf super micropowder feed. The selenium-rich mulberry leaf super micropowder feed is characterized in that 5-20 parts by weight of selenium-rich mulberry leaf supermicro dry powder is added into common feed or fortified feed. The selenium-rich mulberry leaf super micropowder feed disclosed by the invention maintains the original nutritional properties of mulberry leaves and endow the mulberry leaves with a new nutrition health care function, so as to meet growth needs of livestock and reduce the incidence of diseases; meat of livestock fed with the selenium-rich mulberry leaf super micropowder feed is delicious in taste. A new approach is opened up for efficiently and cyclically utilizing mulberry.

The invention relates to preparation of selenium-rich feed and selenium-rich milk, and in particular relates to a selenium-rich feed and a preparation method of the selenium-rich feed as well as a preparation method of selenium-rich milk. The selenium-rich feed comprises selenium-rich straw, dairy cattle concentrated material containing humic acid, EM raw material and a green feed. The preparation method of the selenium-rich feed comprises the steps of a. preparing the selenium-rich straw; b. preparing selenium-rich straw EM fermentation material; c. mixing the selenium-rich straw EM fermentation material, the dairy cattle concentrated material containing humic acid and the conventional green feed to obtain the selenium-rich feed. The selenium-rich milk is produced by dairy cattle fed by the selenium-rich feed. The selenium-rich feed is high in nutritional ingredients, and is capable of improving the milk yield of the dairy cattle to a great extent; the selenium content of the milk is not only obviously improved, but also is very stable, and the fluctuation is slight.

The invention discloses a method for cultivating high-selenium corn and a method for preparing nutrition powder of the high-selenium corn. According to the method for cultivating the high-selenium corn, firstly the variety of the corn is selected, the land is selected and prepared, the corn is planted, and organic selenium is sprayed in the heading period, the formation period of grains and the milk-ripe period at a time respectively. The method for preparing the nutrition powder of the high-selenium corn comprises the steps that husks and germs of the high-selenium corn are removed, then the corn is milled and smashed at a low speed of 1400r / min to obtain corn powder, amylase enzymolysis, protease enzymolysis and vacuum spraying drying are conducted in sequence, and then the high-selenium corn powder is mixed with a composite nutrient to obtain the nutrition powder of the high-selenium corn. By means of the method for cultivating the high-selenium corn and the method for preparing the nutrition powder of the high-selenium corn, the selenium content of the high-selenium corn can reach more than 4mg / kg and is stable. The rich-selenium cultivation method is easy to operate, is low in cost, has certain generalization performance and can process and prepare the nutrition powder of the high-selenium corn. The nutrition powder of the high-selenium corn has high organic selenium content and balanced nutrition, and plays a role in regulating the nutrition of the youth and the old.

The invention relates to a cultivation method of black fungus rich in selenium, which only additionally adds an aqueous selenium salt solution during the material stirring of a culture medium on the basis of well-known various culture medium bagged material formulas and the cultivation management of black fungus, and the total amount of selenium salt dissolved in water plays a crucial role in the concentration of the selenium salt contained in culture medium bagged materials. The invention controls the selenium content of the black fungus taking the culture medium as a nutrient by controlling the concentration of the selenium salt contained in the culture medium bagged materials, ensures the black fungus produced every batch to be rich in the selenium and also enables the selenium content of the black fungus with unit weight to be stabilized within a needed range.

The invention discloses a selenium-enriched strawberry nutrient, which is prepared by the following components in parts by weight: 1-4 parts of nano selenium plant nutrient, 0.5-1.5 part of organic fertilizer and 0.1-0.3 part of microorganism fertilizer, wherein the concentration of the selenium in the selenium-enriched strawberry nutrient is 5000-12000mg / kg. The method for producing selenium-enriched strawberries by using the selenium-enriched strawberry nutrient comprises the following steps: getting wet soil to mix with the selenium-enriched strawberry nutrient, and applying the mixture in a land in plowing or spreading the mixture along ditches in planting or after planting. The selenium-enriched strawberry produced by using the selenium-enriched strawberry nutrient has stable selenium content, and the ratio of selenium in organic form is above 80%.

The invention relates to an artificially cultivated selenium-rich radix codonopsitis and a cultivating process of the artificially cultivated selenium-rich radix codonopsitis. The content of selenium in the artificially cultivated selenium-rich radix codonopsitis is 3,100-9,800mg / kg, and the content of organic selenium takes up not less than 70% of the selenium total content. The cultivating process of the artificially cultivated selenium-rich radix codonopsitis is implemented in the way of seedling, ditching and transplanting. In the cultivating step, the nano-selenium plant nutrients are uniformly applied into ditches before the radix codonopsitis seedlings are transplanted, and the dose of the nano-selenium plant nutrients is 10-40kg / mu; and then the radix codonopsitis seedlings are obliquely transplanted into ditches so as to turn the soil and bury the seedlings, and then are subjected to field managements, such as weeding, stem cutting, fertilizer applying, irrigation and pest control, and finally foliar application by using 5-15% of aqueous solution of the nano-selenium plant nutrients during a full-bloom stage of the radix codonopsitis. The cultivating method is strong in operability, suitable for standardizing and scale product of the traditional Chinese medicinal materials, and the appearance and quality indexes of the selenium-rich radix codonopsitis cultivated by the method are prior to that of the ordinary radix codonopsitis.

The invention relates to a production method of selenium-enriched black fungus, comprising the following steps of: adding selenium salt in a strain medium of liquid seed production during preparation of liquid strain based on known strain medium prescription and cultivation management of liquid seed production of various black funguses; spraying the selenium salt dissolved in the strain medium into the sacked material where the black fungus grows along with the black fungus seed, exerting a decisive impact on the concentration of the selenium salt in the sacked material; controlling selenium content of the sacked material where the black fungus grows by controlling the concentration of the selenium salt of liquid strain medium. The method ensures that the selenium content of black fungus in unit weight is stable in the required scale while ensuring that each batch of black fungus taking the sacked material as nutrient contains selenium.

The invention discloses a selenium-rich Chinese herbal medicine feed additive, which is characterized by comprising the following components in parts by weight: 1-2 parts of fleeceflower root, 0.5-1.5 parts of Chinese angelica, 0.5-1.5 parts of radix codonopsis, 0.5-1.5 parts of lightyellow sophora root, 0.5-1.5 parts of eucommia bark, 0.5-1.5 parts of hawthorn fruits, 0.5-1.5 parts of largehead atractylodes rhizome, 0.5-1.5 parts of combined spicebush root, 0.5-1.5 parts of chilli powder, 0.5-1.5 parts of selenium-rich tea leaves, 0.5-1.5 parts of zanthoxylum bungeanum powder, 0.5-1.5 parts of prepared rehmannia root, 0.5-1.5 parts of argy wormwood leaf, 1-2 parts of milkvetch root, and 0.8-1.5 parts of oysters. Compared with the prior art, the selenium-rich Chinese herbal medicine feed additive has the advantages that pigs, ducks or chickens fed with the additive have features of a high level of energy, strong anti-virus capability, improved immunity, strengthened physique, red skin and smooth feathers, good digestion and absorption and good growth vigor and do not have diseases, the content of selenium in meat and eggs is increased compared with that in existing products, the content of selenium in pork can reach up to 0.45mg / kg, the content of selenium in chicken eggs and duck eggs can be up to 0.27mg / kg, and the selenium content is table.

The invention discloses a selenium-rich iron pot, which is characterized by being prepared mixing pig iron, selenium-copper alloy and selenium-zinc alloy according to a certain weight ratio, smelting,and carrying out die casting for molding; the selenium-rich iron pot is prepared from the following components by a ratio (weight percent): 0.101-1.01% of Se, 0.005-0.05% of La, 0.005-0.05% of Ce, 1.20-1.40% of Si, 0.5-0.7% of Mn, 0.1-1.0% of Zn, 0.48-1.88% of Cu, 0.0175-0.116% of Ag, 0.002-0.024% of P and the balance of Fe. The invention also provides a manufacturing method of the selenium-richiron pot. The trace element release amount of the selenium-rich iron pot provided by the invention is 20-30% of the daily intake standard of a human body during normal cooking, and the selenium-rich iron pot can release a rare earth La / Ce element, so as to meet the demand for trace elements of the human body.

The invention discloses a method for rapidly producing water-soluble selenized sulfated chitosan. The method comprises the following steps: mixing a chitosan solution and a sulfonating reagent to synthesize sulfated chitosan; uniformly mixing the sulfated chitosan and a selenium standard stock solution in a certain ratio; stirring for reacting at 10-60 DEG C for 0.5-4 hours; precipitating and washing by using 95 percent ethanol; drying at a low temperature to obtain the light yellow selenized sulfated chitosan. The obtained product is water-soluble, high in selenium content and sulfate content and stable in property, can be used for enhancing the growing functions, liver functions and anti-oxidation functions of chickens, has a high biological function in chickens, and has a wide application prospect in the breeding industry as a livestock feed additive.

The invention provides a high-selenium laying fowl feed and a production method of high-selenium eggs. The high-selenium laying fowl feed comprises the following ingredients in parts by dry weight: 5-15 parts of high-selenium natural plant grain flour with selenium content of 30-80 milligrams / kilogram, and 70-90 parts of basic laying fowl feed. The production method of the high-selenium eggs with feeding laying fowl with the high-selenium laying fowl feed is that the high-selenium natural plant grain flour with the certain concentration is uniformly stirred with the basic laying fowl feed so as to ensure that the selenium concentration of the feed is 5-30 milligrams / kilogram, and the laying fowl can lay the high-selenium eggs after being fed with the feed for more than 10 days continuously. The high-selenium eggs are rich in trace element-selenium, and the organic selenium content of the high-selenium eggs reaches above 80%, and the high-selenium eggs has better quality. After a user has the eggs for a long time, the selenium element of the user can be supplemented, and the body immunity and the human health are improved; by virtue of the high-selenium eggs, selenium supplementary can be integrated with food; and the method is simple and easy to master, and convenient to popularize and apply.

The invention provides a black fungus selenium-rich culture medium which consists of main raw materials including saw dust, bran, selenium-rich fungus grass and gypsum and further provides a method for producing black fungi by utilizing the black fungus selenium-rich culture medium. A traditional black fungus strain production method is changed, a liquid strain technology is utilized in black fungus strain production to prepare liquid selenium-rich strains, meanwhile the solid selenium-rich culture medium and a secondary selenium-rich method are adopted to make produced black fungi high in selenium content and high in nutritive value. The production efficiency is improved, the production costs are also greatly saved, the production method is simple in process, and the produced stains are high in utilization rate and low in pollution rate.

The invention relates to a culture method of selenium-rich lentinus edodes, which is characterized in that on the basis of culture medium sacked material formulas and culture management of currently known various lentinus edodes, only a selenium saline solution needs to be additionally added in the process of stirring materials in a culture medium, the total amount of the selenium salt dissolved in water plays decisive action on the concentration of the selenium salt of culture medium sacked materials, and the selenium content of the lentinus edodes taking the culture medium as nutrients is controlled by controlling the concentration of the selenium salt of the culture medium sacked materials, thereby ensuring that each batch of produced lentinus edodes has enriched selenium, and simultaneously enabling the selenium content of unit weight of the lentinus edodes to be stabilized in the required range.

The invention discloses a crab feed rich in organic selenium and a preparation method thereof. The crab feed is characterized by being prepared from the following raw materials in parts by weight: 20 to 25 parts of soybean meal, 19 to 24 parts of rice bran, 15 to 17 parts of water chestnut, 13 to 16 parts of pine nut, 0.1 to 0.3 part of yeast selenium, 18 to 20 parts of fish, 19 to 23 dried shrimp, 1 to 3 parts of dark soy sauce, 2 to 5 parts of peanut oil, 2 to 4 parts of peanut butter, 15 to 17 parts of litchi, 14 to 16 parts of celery, 0.1 to 0.3 part of radix bupleuri, 0.6 to 1.1 parts of Chinese wolfberry, 0.2 to 0.4 part of citron fruit, 7 to 9 parts of lotus leaves, 1 to 3 parts of forestry greenstar root, 3 to 6 parts of a feed attractant, and moderate amount of water. The crab feed rich in organic selenium provided by the invention has the benefits that the selenium content is stable and controllable and can be adjusted at will within a certain range, the growth of crabs is facilitated, the disease resistance of crabs is improved, the crab meat quality is improved, the crab quality and the survival rate are improved.

The invention discloses radishes rich in organic selenium and a production method thereof. The radishes rich in organic selenium have an organic selenium content of 8-400 microgram / kg, with organic selenium accounting for over or equal to 80 percent of the total selenium content. The method comprises the following steps: before vegetable land plowing, separately scattering a certain amount of nano-selenium plant nutrient onto the surfaces of vegetable ridges and then plowing, or uniformly scattering the nano-selenium plant nutrient onto the surfaces of vegetable ridges after fully mixing the nano-selenium plant nutrient with other conventional fertilizer and plowing the fertilizer into the plough layer as base fertilizer, and then transplanting and cultivating radishes. The invention have the advantages that the radishes are rich in selenium, the overall selenium content is uniform, and the ratio of organic selenium in the method is improved, thereby solving the problem of selenium content stability in different batches of radishes in the prior art, ensuring uniform selenium content in the radishes, and realizing standardized scale production.

On the basis of currently known spawn medium formulas and culturing management of various mushroom liquid prepared seeds, during the preparation of liquid spawn, selenite is additionally added in a spawn medium of liquid prepared seeds, the selenite which is dissolved in the spawn medium is sprayed in a bagged material for growing mushrooms along with a mushroom seed during grafting, which plays a decisive role in the density of the selenite in the bagged material, and thereby the selenium content of the bagged material for growing mushrooms is controlled by controlling the density of the selenite of the medium of liquid spawn, and each batch of mushrooms taking the bagged material as nutrients is ensured to contain rich selenium, and meanwhile, the selenium content of mushrooms in unit weight is stable within the required range.

The invention relates to a method of using a selenium-enriched coating to plant selenium-enriched pea. The method is characterized by including following steps: a, preparing soaking liquid; b, preparing a sodium selenite coating agent; c, soaking seeds; d, coating; e, seeding and growing seedlings; f, performing field management; g, harvesting. Potassium permanganate is added into the soaking liquid which is purple after soaking, so that pea seeds soaked by the sodium selenite can be prevented from being eaten mistakenly, and effects of sterilizing and disinfecting and promoting pea yield increase. The method is simple to operate, easy to implement, low in cost, good in effect, capable of remarkably improving quality and taste of pea and convenient for large-scale production, and pea produced by the method is uniform in selenium content.

A selenium-rich kiwi fruit production method includes: applying a selenium fertilizer for 2-3 times during a production process of kiwi fruit, adding 30 kg of water into 180-250 ml of selenium-rich organic fertilizer liquid / 667 m<2>, spraying the front surfaces and the back surfaces of leaves with the diluted selenium-rich organic fertilizer liquid during 10-15 days after fruiting of kiwi plants, and allowing the content of selenium in fruit pulp of the kiwi fruits to reach 0.030-0.100 mg / kg via growth. The use method includes: a, the content of selenium of the selenium fertilizer is greater than or equal to 6g / L; b, the use time is about half month after fruiting of the kiwi plants; c, the use method is leaf spraying, and the front surfaces and the back surfaces of the leaves are sprayed; the use amount is 180-250 ml / 667 m2 with adding 30 kg of water, even spraying is preformed, and spraying is performed for 1-2 times again after 10-15 days; e, re-spraying should be performed in rain day during 4 hours after spraying. The method can promote the normal growth of fruits, the skin color of the fruits is even and bright, the sugar of the fruit pulp is increased, the fruit appearance and the nutritional quality can be improved, and the content of selenium in fruit pulp of the kiwi fruits to reach 0.030-0.100 mg / kg.

The invention relates to a method for planting selenium-rich soybeans by using selenium-rich coatings. The method is characterized by including the following steps: 1, preparing a soaking solution; 2, preparing a sodium selenite coating agent; 3, soaking seeds; 4, conducting coating; 5, conducting sowing and culturing seedlings; 6, conducting field management; 7, harvesting the selenium-rich soybeans. Potassium permanganate is added into the soaking solution, the solution appears purple after soaking, therefore, the soybean seeds soaked with sodium selenite are prevented from being eaten by people by mistake, disinfection and sterilization are achieved, and the yield of the soybeans is promoted. The method is simple and easy to implement, low in cost, good in effect and capable of remarkably improving the quality and taste of the soybeans, the selenium content of the produced soybeans is consistent, and scale production is convenient to achieve.