33results about How to "Increase the amount of selenium" patented technology

The present invention relates to a cultivation method of selenium-enriched sprout seedling vegetable. Said cultivation method includes the following steps: selecting seed for cultivating sprout seedling vegetable, soaking seed, sprouting, applying fertilizer, illumination management, water content management and picking. In particular, said invention utilizes the above-mentioned method to cultivate green radish sprout seedling regetable containing high selenium content.

The invention discloses a preparation method of an enteric bacilli Z0206 enriched-selenium polysaccharide. The method comprises the following steps: selecting an enteric bacilli Z0206 selenium-resistant strain, coating the selenium-resistant strain on PDA enriched medium containing selenium to carry out domestication, and determining the optimal selenium feeding time and cultivation time by determining a growth curve of bacteria; inoculating the domesticated enteric bacilli Z0206 strain into the PDA enriched liquid medium to carry out shake-flask fermentation, thereby obtaining a fermentation liquor containing the enteric bacilli Z0206 enriched-selenium polysaccharide; collecting supernate from the fermentation liquor, thereby obtaining enriched-selenium crude polysaccharide powder; dissolving the obtained enriched-selenium crude polysaccharide powder into 20-fold hot distilled water; adding trypsase and papain, taking the obtained protease treatment fluid, and adjusting the pH value to be 7.0 by using an oxalic acid to process; then taking supernate, adding an Sevag reagent to the obtained supernate, thereof obtaining deproteinated enriched-selenium polysaccharide; and preparing a 0.5% polysaccharide solution from the obtained deproteinated enriched-selenium polysaccharide, so as to obtain enriched-selenium polysaccharide quality goods.

The invention relates to the technical field of fertilizers, and in particular to a special selenium-rich organic fertilizer for navel oranges in a red soil region. The special selenium-rich organic fertilizer consists of the following raw materials in parts by weight: 2-5 parts of selenite, 40-100 parts of navel orange peel and pulp, 50-120 parts of sludge, 0.5-5 parts of protease, 0.5-5 parts of cellulase, 1-10 parts of an EM fermentation material, 5-15 parts of plant ash, 1-5 parts of flonicamid and 20 parts of a dispersing agent, wherein the pH value of the organic fertilizer is 8-10. The special selenium-rich organic fertilizer is applicable to navel oranges planted in red soil regions, and the selenium content of the navel oranges can be effectively increased.

The invention discloses a selenium-rich orchard chicken free range method. The method is characterized in that, herbs are planted in an orchard, and selenium fermentation is conducted on the orchard field using microbial agents, insect killing and disinfection are conducted, and disinfection is conducted on rain shelter chickens using natural disinfectants, insect repellent herbs are planted and mosquito repellent essential oil is used to guard against mosquitos, chickens are prevented from harm by mosquitoes, the selenium-rich feed is combined in the breeding process. By the selenium-rich orchard chicken free range method, the immunity of the chicken is good, the illness prevalence rate is low, the growth tendency is good, the selenium content of the chicken is high, at the same time the output and yield of fruits are increased, and the selenium content of the fruit is increased.

The invention relates to the technical field of organic fertilizers, in particular to a selenium-rich organic fertilizer special for passion fruits and a preparation method thereof. The organic fertilizer special for passion fruits is prepared from the following components by weight: 48-106 parts of a raw material, 1.1-21.2 parts of an auxiliary material, 6-12 parts of a fermentation strain, and 65-80 parts of water. Specifically, the raw material is composed of several of chicken manure, pig manure, peat soil, bagasse, sugarcane leaf, shrimp and crab shell, shell powder, a seaweed extract, soybean meal powder and plant ash; the auxiliary material is composed of several of phosphorus-solubilizing and potassium-solubilizing bacillus, paecilomyces lilacinus, nitrogen-fixing bacteria, growth-promoting bacillus, polyglutamic acid and organic selenium; the fermentation strain is composed of bacillus, rhizopus oryzae and Aspergillus niger. Different organic fertilizers are applied at different periods according to the growth needs of passion fruits to meet the nutritional demands of passion fruits in the growth process, at the same time the organic fertilizer utilization is increased, resources are saved and waste is reduced.

The invention relates to an elaphe carinata feed which is prepared from the following raw materials: 20,000 to 30, 000 parts of chicken powder, 20,000 to 30,000 parts of duck meat, 8,000 to 12,000 parts of quail, 1,200 to 1,700 parts of fish meal, 80 to 110 parts of infant milk powder, 90 to 110 parts of soybean milk powder, 1,400 to 1,700 parts of flour, 1,350 to 1,550 parts of eggs, 45 to 55 parts of hawthorn powder, 144 to 160 parts of garlic, 28 to 32 parts of sodium alginate, 27 to 31 parts of astragalus root powder, 29 to 31.5 parts of codonopsis pilosula powder, 25 to 35 parts of angelica sinensis powder, 28.5 to 31 parts of honeysuckle powder, 29 to 31 parts of lycium barbarum powder, 26 to 32 parts of folium isatidis powder, 29 to 35 parts of compound vitamins, 17 to 25 parts of jasminum elongatum, 4,000 to 5,000 parts of pig lung and 50 to 60 parts of stevia rebaudian. After the elaphe carinata feed is implemented according to the technical scheme of the invention, the survival rate of elaphe carinata can be increased.

The invention provides a preparation method of granular partridge tea. The preparation method includes following steps: S1, adopting water vapor to spray for enzyme deactivation; S2, adopting a wet process to roll to form balls, and extruding the balls to granules; S3, before fermentation, spraying moringa oleifera leaf tea extract; S4, roasting, and exposing to the sun; S5, flavoring; S6, coolingfor shaping. Compared with sun-baked partridge tea, the granular partridge tea obtained by the method is attractive in appearance, yellow and bright in color and luster, more strong in Lingling aromaand resistant to brewing, conventional Lingling aroma is maintained to maximum extent, selenium content of the partridge tea is increased, and the characteristic that partridge tea is cold by natureis weakened and modified.

The invention proposes a high-quality rice production method of enriching selenium and zinc, reducing cadmium and increasing yield. The method comprises: selecting high-quality rice varieties with rice quality up to a first grade of national standard; adopting artificial seedling transplanting and weeding method without applying pesticides and herbicides in the planting process, and performing cultivation in wide and narrow rows; a fertilization method being that applying base fertilizer when plowing a field, applying seedling raising fertilizer within half a month after transplanting, and nolonger applying chemical fertilizer in a later period; adopting a selenium-zinc combined application method to spray selenium and zinc fertilizer on leaf surfaces at a heading stage and early fillingstage of rice; harvesting when the rice maturity reaches about 95%; processing the rice after storing the rice for 1-2 months; and vacuum-packing the rice, and conducting storing in a cold storage. According to the present invention, specific concentration, dosage and amount ratio are adopted at key time points to carry out precise fertilization in the selenium-zinc combined application technologyof rice, the technology has good effects of enriching selenium and zinc, increasing yield and reducing cadmium on rice, and the nutrition quality, safety quality and production efficiency of the riceare greatly improved.

The invention discloses a method for greatly improving the selenium content in eggs. The method has the advantages that the selenium content in the produced eggs can be greatly improved; the nutrition requirements of a human body can be met; the free-ranging management is performed in a mountainous area or farmland; quartz sand is fed at a fixed point. The selenium content of the eggs laid by hens fed by using the method is more than 50 times higher than that of selenium-rich eggs produced by using a common culture method.

The invention discloses a method for planting selenium-rich white tea. Special planting management operation which lasts for 30 days is carried out 45 days before picking of tea leaves. The method comprises the following specific step: carrying out root topdressing, leaf surface topdressing and ultrasonic treatment operation on tea trees in the period. The root topdressing and the leaf surface topdressing are carried out simultaneously, and are carried out at intervals of 5-6 days, and ultrasonic treatment operation comprises the process of carrying out ultrasonic radiation treatment once on the tea trees every day. The method for planting the white tea trees is subjected to special improvement treatment, the technical bottleneck that the selenium enrichment amount of the white tea cannot be increased by an existing method is solved effectively, the selenium enrichment amount of the white tea is increased obviously, meanwhile, the yield of tea leaves can also be improved, the economic benefit of planting is increased, and the method has high promotional value.

The invention discloses a preparation method of selenium-enriched lactobacillus preparation. The method includes the following steps: (1) inoculating frozen-stored Lb. platanum ST-III strains in an MRS liquid medium, performing anaerobic culture and subculture to obtain a bacterial culture; (2) weighing 2 g of green tea sample, soaking the green tea sample in purified water for 10 min, taking supernatant, and filtering the supernatant through a sterile filter to obtain green tea extract; (3) preparing an MRS-TE medium: cooling the MRS-Mn medium to room temperature naturally, and then adding the green tea extract; (4) centrifuging the obtained bacterial culture to collect the bacterial cells; (5) washing the collected bacterial cells three times with physiological saline and then resuspending the bacterial cells in the MRS-TE medium, shaking thoroughly, and leaving to stand for fermentation at 37 DEG C; and (6) centrifuging the fermented bacterial cells, washing the fermented bacterialcells with sterile physiological saline three times, and removing the supernatant to obtain the selenium-enriched lactobacillus preparation. The method has an advantage of enriching organic selenium from green tea by fermentation.

The invention provides a planting method for selenium-enriched momordica grosvenori. The method comprises the following steps of soil preparation, seedling selection, field planting and plantation management. According to the planting method, by applying base fertilizer, topdressing and leaf fertilizer, according to different growth periods, different kinds of root fertilizer and leaf fertilizer are applied, and the fertilizer utilization rate can be increased and fruit growth can be promoted; selenium fertilizer and micro element fertilizer are added to the leaf fertilizer, needed microelements and the selenium element are provided for momordica grosvenori growth, the momordica grosvenori yield and the selenium amount are increased, and therefore edible value and economic benefits of momordica grosvenori are increased.

A selenium-enriched compound bacterium is used as zymocyte, blackberry juice and fresh milk are combined for fermentation of selenium-enriched yogurt, and the selenium-enriched blackberry juice yogurtis prepared. The best process conditions which are determined lie in that the additive amount of blackberry juice is 12%, the additive quantity of a fermenting agent is 5%, the fermentation time is 6h, and the fermentation temperature is 42 DEG C. Under the process condition, the made selenium-enriched blackberry juice yogurt is sweet and mellow in tissue, moderate in sour and sweet degree, and fine and smooth in mouth feel, and is favorable source for replenishing selenium.

The invention discloses a preparation method for a selenium-rich lactic acid bacteria preparation. The preparation method comprises the following steps: (1) inoculating a cryopreserved Lb.plantarum ST-III strain into an MRS liquid culture medium, and carrying out anaerobic culture so as to obtain a thallus culture; (2) weighing 2 g of a green tea sample, adding purified water, carrying out soakingfor 10 min, taking a supernatant, and carrying out filtering with a sterile filtering membrane so as to obtain a green tea extract; (3) preparing an MRS-TE culture medium, then naturally cooling theMRS-TE culture medium to a room temperature, and adding the obtained green tea extract; (4) centrifuging the obtained thallus culture, and collecting thalli; (5) cleaning the collected thalli with normal saline for three times, re-suspending the thalli in the obtained MRS-TE culture medium, carrying out full and uniform shaking, and carrying out standing at 37 DEG C for fermentation; and (6) centrifuging the obtained fermented thallus, carrying out washing with sterile normal saline for three times, and carrying out centrifuging to remove the supernatant so as to obtain the selenium-rich lactic acid bacteria preparation. The preparation method provided by the invention has the advantage that organic selenium is efficiently enriched from the green tea by adopting a fermentation means.

The invention relates to the technical field of selenium activation, in particular to a method for applying biological activated oyster powder to activation of selenium in soil. The method comprises the following steps: (1) measuring the selenium content of soil; and (2) applying a selenium activator according to the determined selenium content. According to the invention, the biologically activated oyster powder is used as a main raw material to prepare the selenium activator, and the prepared selenium activator can activate selenium in soil and improve the selenium content of agricultural and sideline products. Besides, a traditional Chinese medicine extract, namely a schisandra chinensis extract, is added into the preparation raw materials of the selenium activator, and the schisandra chinensis extract and the biologically activated oyster powder promote each other and interact with each other, so the selenium element in the soil can be further activated, and the amount of enrichedselenium in agricultural and sideline products is further increased.

The invention discloses a preparation method of selenium-enriched wheat malt. The preparation method comprises the following steps: (1) selecting seeds; (2) dressing seeds; (3) sowing the seeds dressed by drugs into a field, and then irrigating a sodium selenite water solution; (4) when wheat seedlings are exposed of the ground for 3cm-5cm, continually irrigating the sodium selenite water solution; (5) when the wheat seedlings are exposed of the ground for 10cm-15cm, applying farm manure according to the standard of 8kg-12kg per Mu, and managing according to a conventional method to obtain ripe wheat; and (6) soaking the ripe wheat into water, after the ripe wheat sprouts, washing with clean water; and finally, drying at a low temperature to obtain the wheat malt. The wheat prepared by the method disclosed by the invention is high in selenium content, high in conversion rate and low in cost, can be used for preparing health products, can be used as a feed additive of poultry and livestock, and also can be used as leftovers of other subsidiary agricultural products or fertilizers for continually preparing other selenium-enriched subsidiary agricultural products, so that the wheat can be recycled.

The invention belongs to the field of food production, and particularly relates to a method for producing 'rolled strip batter powder' from selenium-enriched tender wheat. The production raw materialsare selenium-enriched tender wheat. According to the method disclosed by the invention, breeding the selenium-enriched tender wheat is emphatically elaborated, the selenium content of the wheat and products thereof conforms to the national standard HB001 / T-2013, namely that the selenium content is 0.005-0.2 milligrams / kilogram. Finished products are made through the steps of performing seed soaking, spraying sodium selenite onto leaf surfaces, performing harvesting when the wheat is 90% ripe, detecting the selenium content, performing stir-frying to obtain cooked wheat, baking the cooked wheat, and milling the baked wheat to obtain wheat powder namely the finished products. The situation that high-protein high-gluten winter wheat seeds need to be selected is emphatically provided, so thatinorganic selenium sprayed in the growth process of the wheat is quickly converted into organic selenium, and the selenium content is high. According to the method disclosed by the invention, the situations that a good manufacturer of the sodium selenite needs to be carefully selected when the sodium selenite is chosen and bought and a quality contract needs to be signed are particularly provided, so that the selenium content of the sodium selenite can be guaranteed, through practice, a definite object can be in view, and the qualified selenium-enriched tender wheat can be produced. Accordingto the method disclosed by the invention, the selenium-enriched tender wheat which is cooked through frying is used for producing the 'milled strip batter powder', so that the 'milled strip batter powder' not only has special fragrance of the fried tender wheat but also is rich in selenium elements, is a flavored snack deeply welcomed by people and surely has good market prospects.

The present invention proposes a method for preparing granular partridge tea, which includes the following preparation steps: S1, using water vapor spraying to finish; S2, wet kneading into balls, and extruding into granules; S3, spraying Moringa oleifera before fermentation Leaf tea extract, and then fermented; S4, baked, and then sun-dried; S5, fragrant; S6, cooled and formed. Compared with the sun-dried partridge tea, the granular partridge tea obtained by the present invention not only has a good-looking appearance, bright yellow color, stronger Lingling aroma, and is resistant to foaming, it maintains the traditional Lingling aroma to the greatest extent, and not only increases The selenium content of tea also weakens and modifies the natural coolness of partridge tea.

The invention relates to the technical field of rice selenium enrichment, in particular to a rice selenium-enriched foliar enhancer. The rice selenium-enriched foliar enhancer is prepared from the following components in parts by weight: 10-22 parts of nano-selenium, 2-4 parts of a nano organic silicon preparation, 4-6 parts of potassium sulfate, 4-8 parts of ammonium molybdate, 7-9 parts of sodium lauryl silicate, 18-26 parts of astragalus membranaceus and 18-20 parts of platycodon grandiflorum. Traditional Chinese medicine components including astragalus membranaceus and platycodon grandiflorum are added into the rice selenium-enriched foliar enhancer. After the two traditional Chinese medicine components are added, the selenium content of rice is obviously increased, so that the economic benefit of the rice can be improved, and the enthusiasm of farmers for planting the rice is further improved.

The invention belongs to the technical field of crop plantation, and particularly relates to a plantation method of selenium-rich Saccharum officinarum. The plantation method of the selenium-rich Saccharum officinarum comprises the following preparation steps of: (1) sowing Astragalus sinicus L. and Saxifraga stolonifera Curt.; (2) harvesting the Astragalus sinicus L., and drying the Astragalus sinicus L. in the sun; (3) carrying out land preparation, and planting the Saccharum officinarum; (4) carrying out fertilizer application management: during a Saccharum officinarum tillering stage, carrying out first-time top application, applying composted manure, nitrogen, phosphorus and potassium compound fertilizer and Astragalus sinicus L. fermented fertilizer, during a Saccharum officinarum jointing stage, carrying out second-time top application, applying the nitrogen, phosphorus and potassium compound fertilizer, and spraying selenium-rich leaf fertilizer; and (5) carrying out routine management for the rest part. The plantation method disclosed by the invention is favorable for accelerating the Saccharum officinarum to adsorb selenium, so that the selenium content of the Saccharum officinarum is increased, and in addition, the plantation method disclosed by the invention can improve soil so as to further improve the yield and the quality of the Saccharum officinarum.

The invention relates to the technical field of fertilizers, and in particular to a special selenium-rich organic fertilizer for navel oranges in a red soil region. The special selenium-rich organic fertilizer consists of the following raw materials in parts by weight: 2-5 parts of selenite, 40-100 parts of navel orange peel and pulp, 50-120 parts of sludge, 0.5-5 parts of protease, 0.5-5 parts of cellulase, 1-10 parts of an EM fermentation material, 5-15 parts of plant ash, 1-5 parts of flonicamid and 20 parts of a dispersing agent, wherein the pH value of the organic fertilizer is 8-10. The special selenium-rich organic fertilizer is applicable to navel oranges planted in red soil regions, and the selenium content of the navel oranges can be effectively increased.

The invention discloses a cultivation method of selenium-enriched cordyceps militaris, and belongs to the technical field of cordyceps militaris cultivation methods. Comprising the following steps: strain activation culture: a strain activation culture medium comprises the following components: wheat, wheat bran, soybeans, cane sugar, peptone, monopotassium phosphate, triamine citrate, selenium-enriched yeast powder and water; culturing a liquid strain, wherein a liquid strain culture medium comprises the following components: soybean meal, cane sugar, peptone, monopotassium phosphate, vitamin B12, selenium-enriched yeast powder, an oak leaf extract and water; selenium-enriched culture of sporocarp, wherein a selenium-enriched culture medium of sporocarp comprises the following components in percentage by mass: wheat, wheat bran, cane sugar, molasses, peptone, monopotassium phosphate, triamine citrate, selenium-enriched yeast powder, calcium amino acid chelate and water. Through the synergistic effect of organic selenium in the culture medium formula, absorption and accumulation of selenium elements are induced, and the selenium content of the cordyceps sinensis can be increased while residue harm caused by addition of inorganic selenium is avoided.

The invention discloses a selenium-enriched organic fertilizer and a preparation method and application thereof, and belongs to the field of organic fertilizers. Raw materials include, by weight parts, 85-95 parts of chicken manure, 4-5 parts of animal meat powder, 10-15 parts of attapulgite, 1-3 parts of selenium-enriched egg and 2-4 parts of EM strains. The raw materials are easy to collect, thehumification degree is improved with the fermented chicken manure as the main raw material, and the physical properties of the soil are improved due to no root or seedling burning occurs, and the obtained selenium-enriched organic fertilizer has a sustained release effect and ion exchange capacity. The loss of nutrients is reduced, the fertilizer efficiency is improved, and the dry quality of agricultural products is improved. The preparation method is simple in process, low in cost and wide in application range.

The invention provides an improved cultivation method of selenium-rich dendrobium candidum. The improved cultivation method specifically includes: preparation of matrix planting and building of a greenhouse; selection and cleaning treatment of transplanting seedlings; planting, cultivation and pruning; post-planting management; transplanting cultivation and growth and harvesting of the dendrobiumcandidum. The method is mature in process, and problems that improper planting management is easy to be infringed by pests, the growing dendrobium candidum is less rich in selenium and the cultivationmethods are tedious in steps in the existing cultivation method are solved; the selenium content of dendrobium candidum can be increased by using selenium-rich fertilizer, and the selenium is a beneficial element for plant growth, and can stimulate plant growth and development as well as seed germination, increase root activity, promote nutrition absorption and plant metabolism, and increase photosynthesis and chorophyll content; the method is beneficial to the growth of the dendrobium candidum and can ensure the survival rate of the dendrobium candidum.

The invention discloses a preparation method of a selenium-rich lactobacillus preparation. The preparation method comprises the following steps: (1), inoculating cryopreserved Lb.plantarum ST-III strain in an MRS liquid culture medium and carrying out anaerobic culture, and circularly subculturing for 2 times to 3 times to obtain a fugus body culture; (2), weighing 2g of selenium-rich tea samples,adding purified water into the 2g of selenium-rich tea samples to obtain a mixture; soaking the mixture and taking supernant liquid; and filtering the supernant liquid through a aseptic filtration film to obtain selenium-rich tea extract; (3), preparing a tomato juice-TE culture medium (4) and performing centrifugation to obtain the fugus body culture, and collecting a fugus body; (5), cleaning the fugus body collected in the step (4) with normal saline for three times, and resuspending the fugus body in the tomato juice-TE culture medium obtained in the step (3), and uniformly shaking and standing at a temperature of 27 DEG C and performing fermentation for 48 hours to 96 hours; and (6), centrifuging the obtained fermentation fugus body, and aseptically washing the fugus body for three times with the normal saline, and performing centriguation and removing supernant liquid to obtain the selenium-rich lactobacillus preparation. The preparation method of the selenium-rich lactobacilluspreparation disclosed by the invention has the advantage that organic selenium is effectively enriched from the selenium-rich tea by adopting a fermentation means.

The invention discloses a soaking treatment device for chilli seed planting. The soaking treatment device comprises bamboo tubes storing chilli seeds, a conveying belt, clamping and fixing mechanisms, a soaking distiller, at least two driving mechanisms, at least two truss mechanisms and a control table. The chilli seeds are stored through the multiple sets of bamboo tubes, by means of the clamping and fixing mechanisms as well as mechanical linkage and mutual cooperation between the clamping and fixing mechanisms, the chilli seeds can be automatically carried into the soaking distiller to be soaked in a three-dimensional annular cooperation mode in the actual use process, comprehensive soaking of all the chilli seeds can be met, meanwhile, by means of superposition and interaction of double procedures of electric heating and heat exchange, external oil films of chilli seeds are stimulated to fall off, the emergence rate is increased, at the same time, the selenium content and the content of various microelements of the chillies during growth can be remarkably increased, the disease resistance of the chillies during subsequent growth is achieved, therefore, actual soaking efficiency is effectively achieved, and meanwhile, the subsequent growth effect of the chillies is guaranteed.

The invention discloses a therapeutic dietary therapy formula for patients with coronary heart diseases, and relates to the technical field of dietary therapy. The therapeutic dietary therapy formulacomprises, by mass, 5-6 g of salt, 25-30 g of oil, 50-200 g of beans, 70-80 g of nuts, 45-55 g of livestock and poultry meat, 45-55 g of eggs, 45-55 g of aquatic products, 500-700 g of vegetables, 200-350 g of fruits, 200-460 g of cereals, 50-100 g of potatoes and 1,500-1,700 g of water. The formula can provide the patients with the coronary heart diseases with a diet featuring comprehensive and balanced nutrition, which facilitates cardiovascular treatment and mortality reduction for the patients, promotes dredging of the intestinal tract, and avoids intestinal cancer.

The invention discloses a feed additive for producing selenium-rich quail eggs and a preparation method and application thereof. The raw materials of effective components of the feed additive for producing the selenium-rich quail eggs comprise salsola collina, herba shorthorned epimedium, mulberry leaves, ganoderma lucidum and celery seeds. The invention also provides the preparation method and application of the corresponding additive. After the prepared additive is added into feed for feeding quails, the selenium content in laid eggs is obviously increased, correspondingly people can achievethe purposes of dietary therapy and selenium supplement by eating the selenium-rich quail eggs, and meanwhile, the additive is beneficial to dietary therapy and health care of certain diseases. A selenium supplement approach is simple, easy to implement and obvious in effect, the raw materials are low in cost and wide in source, the formula is scientific, ingenious and exquisite, and the preparation method is simple and easy to implement. The feed additive is suitable for being matched with conventional feed to obtain the feed for producing the selenium-rich quail eggs, and by feeding the quails with the obtained feed, the selenium-rich quail eggs are produced.

The invention relates to the technical field of medical fertilizers, in particular to a selenium-rich foliar fertilizer for dendrobium officinale. The selenium-rich foliar fertilizer is characterized by comprising the following components in percentage by weight: 0.5-10% of a bactericidal composition, 30-60% of a macroelement fertilizer, 0.5-0.7% of a zinc fertilizer, 0.8-1% of a molybdenum fertilizer, 0.05-0.1% of a selenium fertilizer and the balance of filler 100%, wherein the bactericidal composition is formed by compounding scopoletin and diacetone amine copper oxalate. The selenium-rich foliar fertilizer for dendrobium officinale can provide nutrient elements required by growth of dendrobium officinale, especially can provide selenium, so that the selenium content of dendrobium officinale can be increased when the foliar fertilizer is sprayed; and secondly, when scopoletin and diacetone amine copper oxalate in the bactericidal composition are compounded, the bactericidal composition has an obvious synergistic effect on the anthracnose of the dendrobium officinale, so that the prevention and treatment effect on the anthracnose of the dendrobium officinale can be improved, the application dosage of pesticides can be reduced, and pesticide residues can be reduced.

The invention discloses selenium-enriched yeast and a selenium-rich optimization method for the same, and belongs to the field of bioengineering. The selenium-enriched yeast is taxonomically named Rhodotorula glutinis and is named X20, and a preservation serial number of the selenium-enriched yeast is CCTCCM2017225. The selenium-enriched yeast and the selenium-rich optimization method have the advantages that phosphate is added to induce yeast high-affinity phosphate-selenium transport protein expression, and accordingly the selenium transport capacity and the tolerance of the selenium-enriched yeast can be improved by the aid of the selenium-rich optimization method; only phosphorus elements need to be added into culture media, and the selenium-rich optimization method includes simple operation programs and is low in additive volume and cost.