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471 results about "Sodium selenate" patented technology

Sodium selenate is the inorganic compound with the formula Na₂SeO₄, not to be confused with sodium selenite. It exists as the anhydrous salt, the heptahydrate, and the decahydrate. These are white, water-soluble solids. The decahydrate is a common ingredient in multivitamins and livestock feed as a source of selenium. The anhydrous salt is used in the production of some glass. Although the selenates are much more toxic, many physical properties of sodium selenate and sodium sulfate are similar.

Selenium-enriched and zinc-enriched seed manure special for wheat and potato

The invention discloses a selenium-enriched and zinc-enriched seed manure special for wheat and potato, which comprises any one of sodium selenite or sodium selenate, any one of potassium chloride or potassium sulphate, any one of zinc sulfate or zinc chloride, and organic fertilizer. The production method comprises the following steps: (1) mixing the organic fertilizer with any one of sodium selenite or sodium selenate to obtain an organic selenium fertilizer; (2) sufficiently mixing any one of potassium chloride or potassium sulphate with any one of zinc sulfate or zinc chloride and blending uniformly to obtain a zinc potash fertilizer; and (3) sufficiently mixing the organic selenium fertilizer obtained in step (1) with the zinc potash fertilizer obtained in step (2), and conducting pelleting, drying, screening and packing to obtain the selenium-enriched and zinc-enriched seed manure special for wheat and potato. The seed manure has the advantages of causing wheat grain (flour) or potatotubers to achieve the aim of being enriched in both zinc and selenium simultaneously, thus realizing the effect of yield twice the result with half the effort. The seed manure can also play the roles of balancing nutrient supply, improving output and totally improving quality. The seed manure is applied by being combined with seeding, saves labor and time, has low cost and strong operability, and is convenient for application in large-area mechanical planting.
Owner:高炳德 +1

Preparation method and application of selenium-enriched cadmium-resistant foliar fertilizer special for rice

InactiveCN105819986AReduce usageEliminate the risk of poisoningFertilising methodsNitrogenous fertilisersSucroseSilicic acid
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.
Owner:AGRI RESOURCE & ENVIRONMENT RES INST GUANGXI ACADEMY OF AGRI SCI

Method for culturing pleurotus geesteranus uniformly rich in selenium by using mixed selenium source

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.
Owner:SUZHOU SETEK

Planting method of grapes rich in elemental selenium

The invention relates to a planting method of grapes rich in elemental selenium. The planting method of the grapes rich in elemental selenium comprises the following steps of diluting a nano-selenium microbial selenium fertilizer preparation by 15-25 times by using water, and respectively spraying the generated diluents of the nano-selenium microbial selenium fertilizer preparation to roots and leaves of grape vines in a new leaf stage, a fruit setting stage, a fruit growing stage and a stage before fruit picking of the grapes, wherein the content of the selenium element is 20-50mg / kg and is 3-20 times that the content of the selenium in ordinary grapes. Selenium is an essential trace element of the human body; the selenium of the nano-selenium-rich grapes exists in the form of nano-selenium which can be easily absorbed by the human body; the selenium fertilizer preparation is prepared from selenium dioxide or selenium trioxide and salts such as sodium selenite, ammonium selenite and sodium selenate by biological fermentation of various probiotic organisms such as saccharomycetes, lactic acid bacteria and bacillus. The frequency for spraying the selenium preparation to the roots and the leaves is increased, so that the content of selenium of the grapes rich in selenium is also increased by absorbing and converting by the grape vines. The planting method of the grapes rich in elemental selenium is simple to operate and low in cost. The grapes are used as one of good fruits for supplementing selenium to the human body.
Owner:SHANDONG UNIV

Method for leaching selenium in acid mud by using sodium sulfite

The invention discloses a method for leaching selenium in acid mud by using sodium sulfite. The method comprises the following steps: selenium-containing acid mud and industrial water are mixed into pulp, and the pulp is put into a stirring groove for water washing till the acid mud is neutral; the neutral acid mud is mixed with the sodium sulfite and the industrial water into pulp, the pulp is put into a high-pressure reactor, nitrogen is introduced for reaction, the pressure and the temperature are reduced after the reaction is finished, the material is taken out and filtered, and the filtrate is sodium selenate solution; the sodium selenate solution is put into an acidizing groove, and sulfuric acid is added under the stirring condition; after the acidification is finished, temperature rise is started, the mixture is continuously stirred and then filtered, and the filter residue is selenium powder with the content of more than or equal to 97.0%; the selenium is leached by using the industrial sodium sulfite in the process of extracting the selenium in the acid mud, and the leached selenium is acidized to obtain the selenium powder with the content of more than or equal to 97.0%; and sodium sulfate produced in the technical process is effectively recycled by a distillation and crystallization method. The method has the characteristics of low cost, easiness in industrialization and low-carbon environmental protection.
Owner:KUNMING METALLURGY INST

Dairy cow postpartum nutrition enhancer premix and preparation method and application thereof

ActiveCN102326680APostpartum syndrome reliefRelieve labor stressAnimal feeding stuffAccessory food factorsVitamin CAdditive ingredient
The invention discloses a dairy cow postpartum nutrition enhancer premix and a preparation method and application thereof. In a formula, the premix comprises the following components in part by weight: 77.400 to 81.400 parts of energy matters, 8.000 to 9.000 parts of calcium source, 1.000 to 2.000 percent of magnesium sulfate, 2.000 to 3.000 parts of sodium chloride, 1.000 to 2.000 parts of potassium chloride, 2.300 to 3.200 parts of uterus restoration nutritional ingredients, 0.600 to 0.680 part of anti-parturition stress matters, 0.050 to 0.100 part of flavoring agent and 0.200 to 0.600 part of sweetener, wherein the energy matters are glucose and an energy precursor matter; the anti-parturition stress matters are vitamin E, vitamin D, vitamin C, sodium selenite and organic selenium; and the uterus restoration nutritional ingredients are motherwort herb and/or a motherwort herb extract. In the preparation method, the components are mixed uniformly according to a specific sequence toobtain the premix. The premix is mixed with water to form oral liquid, can be directly drunk by dairy cows, is convenient to use quickly and has low cost. In addition, the premix can prevent postpartum syndromes of the dairy cows or reduce the morbidity of the dairy cows, and improve the production performance and utilization age limit of the dairy cows.
Owner:光明牧业有限公司

Cattle and sheep fattening barbary wolfberry fruit and licorice root health-care licking brick and preparation method thereof

The invention relates to a cattle and sheep fattening barbary wolfberry fruit and licorice root health-care licking brick and a preparation method thereof, and the licking brick is characterized in that each kg of the licking brick comprises the following raw materials: 0.21-0.35g of ferrous sulfate, 0.21-0.35g of zinc sulfate, 0.14-0.21g of copper sulfate, 0.24-0.35g of manganese sulfate, 0.01-0.02g of sodium selenite, 0.07-0.35g of potassium iodide, 0.03-0.07g of cobalt chloride, 0.14-0.35g of magnesium oxide, 6.0224-8.038g of chromium nicotinate, 30-150g of sodium sulfate, 200-300g of common salt, 200-300g of bentonite, 30-60g of molasses, 190-285g of barbary wolfberry fruit and 50-100g of licorice root. The preparation method combines the chemical coagulation technology and the mechanical pressing technology, simultaneously targets the characteristics of cattle and sheep fattening and develops the nutrition licking brick which adds the barbary wolfberry fruit and the licorice root and supplements cattle and sheep complex nutrition, thereby fully playing good properties of cattle and sheep. The licking brick is characterized by a wide range of sources for selecting a curing agent, low cost, more comprehensive nutrition, greater density, reasonable feed intake, sustained release of elements, health care, safety, environmental protection and the like, thereby being suitable for raising levels with different feeding methods.
Owner:NINGXIA ACAD OF AGRI & FORESTRY SCI RES INST OF ANIM
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