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Method for improving content of chromium and selenium of farm products

The invention discloses a method for improving the content of chromium and selenium of farm products, which comprises a method for producing a selenium-rich and chromium-rich organic fertilizer solution and a method for fertilizing crops, wherein a process of the method for producing the selenium-rich and chromium-rich organic fertilizer solution comprises the steps of mixing chromium glycine, sodium selenite and an organic fertilizer solution according to certain proportion, fully stirring the mixture, and then fermenting the mixture for certain time at the temperature of between 20 and 25 DEG C to obtain the selenium-rich and chromium-rich organic fertilizer solution; and the method for fertilizing the crops comprises the steps of diluting the selenium-rich and chromium-rich organic fertilizer solution by adding water with certain proportion, and then evenly spraying the diluted selenium-rich and chromium-rich organic fertilizer solution on leaves of the crops at different growth periods of the crops according to different crop varieties. After the method is implemented, the content of organic chromium and organic selenium of the farm products can be improved by between 10 and 15 times, the content of the chromium of the obtained farm products is between 0.21 and 0.52vg, and the content of the selenium is between 0.15 and 0.42vg. The method for improving the content of the chromium and the selenium of the farm products has simple and convenient operations, and is economical and practical.
Owner:张东明

Selenium-rich mushroom bran feed, preparation method of feed, and method for cultivating selenium-rich barley pests

The invention relates to a selenium-rich mushroom bran feed, a preparation method of the feed, and a method for cultivating selenium-rich barley pests by using the selenium-rich mushroom bran feed. Selenium-rich mushroom bran is taken as a main raw material of the selenium-rich mushroom bran feed; the content of the selenium-rich mushroom bran in the selenium-rich mushroom bran feed is 5-30wt%; the content of selenium in the selenium-rich mushroom bran is 50-250mg / kg; the ultimate content of selenium in the selenium-rich mushroom bran feed is 5-20mg / kg. The preparation method comprises the following steps of: mixing raw materials to obtain a mixture, grinding the mixture, and then drying, grinding, sieving, mixing, grinding and conditioning the mixture. When the selenium-rich mushroom bran feed is used for cultivating the selenium-rich barley pests, barley pest larvae or pupae with high selenium content is obtained, wherein the selenium content of the selenium-rich barley pest larvae is 0.5-2.0mg / kg and the selenium content of the selenium-rich barley pest pupae is 0.5-1.5mg / kg. Through conversion on the selenium-rich mushroom bran by the barley pests, the pollution of mushroom sticks to environment can be effectively avoided, meanwhile the utilization rate of an inorganic selenium additive added in the mushroom sticks is enhanced and therefore, the waste of the selenium element under the condition of the shortage of selenium supply in China is avoided.
Owner:FEED RESEARCH INSTITUTE CHINESE ACADEMY OF AGRICULTURAL SCIENCES +1

Multifunctional natural marine biological calcium preparation

InactiveCN106858609ARich and high-quality calcium sourceLarge specific surface areaMetabolism disorderNon-surface-active detergent compositionsCoral reef fishEngineering
The invention relates to a multifunctional natural marine biological calcium preparation. Marine biological calcium raw materials such as shells of mollusks, pearls, corals, fish bones in the pollution-free waters are incompletely calcined for multiple times to prepare nano-aperture biological calcium powder of a porous micro structure containing an appropriate amount of active calcium, the prepared biological calcium powder can be used as a human body calcium supplementing preparation, detergent for food and tableware, heat preservation and heat conduction accelerants of a heat preservation material and the like. According to different uses, a corresponding raw material proportion and technology are adopted to obtain natural high-quality biological calcium fine powder: when used as the human body calcium supplementing preparation, the biological calcium powder can be safely and efficiently absorbed by the human body; when the biological calcium powder is used as the detergent, harmful substances attached to the surface of the food such as fruits and vegetables and the surface of the tableware can be effectively eliminated, and safety and no secondary pollution can be realized; and when the biological calcium powder is used as the heat preservation and heat conduction accelerant and added into the heat preservation composite material, the heat storage capacity and heat conduction coefficient can be effectively improved. By adopting the multifunctional natural marine biological calcium preparation, the problem that the heavy metal content in the continental biological calcium source is out of limits can be solved, and the multifunctional high-quality marine biological calcium preparation can be obtained.
Owner:马洁
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