Special selenium-rich liquid fertilizer for moso bamboo shoots and preparation method of fertilizer

The invention relates to a special selenium-rich liquid fertilizer for moso bamboo shoots and a preparation method of the fertilizer. The liquid fertilizer comprises an organic and inorganic mixed selenium source prepared from potassium nitrate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, boric acid, EDTAZnNa2, EDTAMnNa2, NaFeEDTA, sodium silicate, ammonium molybdate, 5-nitroguaiacol sodium salt, sodium dodecyl benzene sulfonate, sodium benzoate and a selenium-rich yeast, wherein the organic and inorganic mixed selenium source is formed by preparing the selenium-rich yeast into a seed and then carrying out fermentation enrichment culture, inactivation and decomposition in an inorganic selenium containing culture medium. The preparation method comprises the following steps of dissolving effective components according to a certain sequence; regulating a pH value; and treating until constant volume is achieved. The special selenium-rich liquid fertilizer for the moso bamboo shoots, which is disclosed by the invention, has the advantages of comprehensive nutrient element, reasonable and safe formula, high fertilizer utilization ratio, no environmental pollution and the like, is convenient to fertilize, improves the utilization efficiency of a selenium element and increases the selenium content of bamboo shoots by using an organic selenium source and ensures the safety in fertilizer use and selenium-rich moso bamboo shoot eating.