abstract |
The invention discloses a strain of Exiguobacterium indicum whose preservation number is GDMCC NO.61594, and the strain number is YAN2; the Exiguobacterium indicum strain YAN2 has the characteristics of tolerance to high concentration of selenite, and can convert inorganic selenium into In order to use the biological nano-selenium with higher safety to be applied to the biosynthesis of nano-selenium; the present application also provides a fermentation preparation method using the Exactobacillus indian strain YAN2 to convert inorganic selenium into biological nano-selenium with higher safety. The obtained nano-selenium can promote the growth of leafy vegetables, increase the content of chlorophyll, Vc, total phenols, etc., reduce the nitrate content, and improve the quality of leafy vegetables; thirdly, the present application provides nano-selenium prepared by fermentation of the Exiguobacterium indian strain YAN2 Liquid fertilizer, which has the advantages of green, safe and high-efficiency, is applied to crops with high activity, good safety and convenient application. |