Preparation method of elemental selenium-enriched preparation

Abstract

The invention relates to a preparation method of an elemental selenium-enriched preparation. The preparation method comprises the following steps: mixing sodium selenite, glucose, starch, protein, calcium carbonate, table salt, amino acids, potassium nitrate, ferrous sulphate, biochemical enzymes and chitosan with deionized water, then inoculating probiotics and fermenting at 25-35 DEG C for 20-40 days under an anaerobic condition to obtain the elemental selenium-enriched preparation, wherein the elemental selenium-enriched preparation contains 0.3-0.4g / L of elemental selenium, the elemental selenium is nanoscale, the average particle size is 60-150nm, and the total number of active bacteria is not less than 10 billions / mL; the probiotics are selected from one or the combination of more of saccharomycetes, lactic acid bacteria, bacillus and actinomycetes; the elemental selenium-enriched preparation contains nitrogen, phosphorus, potassium and trace elements necessary to plants except for selenium element, and has a production-increasing effect on grape; the selenium-enriched preparation has a stress-resistant effect on crop diseases and pests, has an antagonistic effect on harmful heavy metals, has a degradation effect on nitrate in vegetables, and can be used for reducing the application amounts of pesticides.

Description

technical field [0001] The invention relates to a preparation method of an elemental selenium-enriched preparation, belonging to the technical field of agricultural planting. Background technique [0002] my country is a big selenium-deficient country. The census proves that more than 70% of the soil in our country is seriously deficient in selenium, and the selenium content in more than 95% of the grain and livestock and poultry meat in our country is less than 50 μg / kg, which belongs to a large selenium-deficient country. The per capita selenium intake in my country is only about 39 micrograms per day, which is less than 80% of the minimum requirement for adult success of 50 micrograms per day, and is far from the healthy requirement of 100-200 micrograms per day; it is farther away from the safe upper limit of 800 micrograms. In my country, except for a few areas, 90% of the population needs to use bioengineering technology to supplement selenium. Not only people need t...

AI Technical Summary

Problems solved by technology

But selenium exists in the form of inorganic selenium salt in this selenium-enriched preparation, and the biological activity of inorganic selenium salt is low, does not have antioxidation, and human body is very little to the absorption rate of inorganic selenium salt, and excessive consumption has certain toxicity to human body, has increased the harm to human body. Hazardous

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