The invention discloses a
selenium-enriched
nutrient solution for konjak planting. The
nutrient solution comprises the following raw materials in parts by weight; 1 to 5 parts of seaweed
selenium polysaccharide, 0.25 to 1 part of
zinc lactate, 0.01 to 0.5 part of
potassium dihydrogen
phosphate, 0.05 to 0.3 part of
boric acid, 0.1 to 0.5 part of
ferric citrate, 0.2 to 0.6 part of an
amino acid manganese complex, 0.05 to 0.3 part of a
copper glycinate complex, 0.4 to 0.6 part of
rare earth double salt, 0.05 to 0.1 part of organic
germanium, 0.2 to 0.6 part of a
calcium source, 0.01 to 0.2 part of
zirconium oxide and 0.1 to 0.5 part of an absorption auxiliary agent. The invention further discloses a preparation method of a
selenium-rich konjac
fine powder and a selenium-rich konjac
protein powder, the selenium-rich
nutrient solution is applied, and the preparation method comprises the steps of preparation of the selenium-rich
nutrient solution, konjac seed soaking treatment, fertilizationmanagement,
processing of the konjac
fine powder and konjac flying
powder, peculiar smell treatment of the konjac flying
powder, extraction of the selenium-rich konjac
protein powder and the like. The konjak yield is high, the selenium content of the prepared konjak
fine powder and konjak
protein powder is high, and the additional value of konjak is improved.