Application method of medium and trace nutrient elements for wrapper hydroponic system

An application method of medium and trace nutrient elements for a wrapper cultivated in a hydroponic system, comprising the following steps:

• providing a nutrient solution cultivation system comprising medium and trace element nutrient solutions for facility-based cultivation of the wrapper;
• wherein the medium and trace element nutrient solutions are applied in the cultivation of the wrapper;
• cultivating the wrapper from an initial transplanting to a rosette stage, to a vigorous growth stage, and to a maturation stage;
• applying a first medium and trace element starter nutrient solution during a period from the initial transplanting to the rosette stage, applying a second medium and trace element starter nutrient solution during the vigorous growth stage, and applying a third medium and trace element starter nutrient solution during the maturation stage;
• the first medium and trace element starter nutrient solution contains 310-460 mg/L of calcium salts, 40-55 mg/L of iron salts, 65-130 μg/L of boric acid, 230-500 μg/L of manganese salts;
• the second medium and trace element starter nutrient solution contains 460-690 mg/L of calcium salts, 400-600 mg/L of magnesium salts, 60-85 mg/L of iron salts, 100-200 μg/L of boric acid, and 345-750 μg/L of manganese salts;
• the third medium and trace element starter nutrient solution contains 860-1300 mg/L of magnesium salts, 100-250 mg/L of iron salts, 210-420 μg/L of boric acid, and 750-1600 μg/L of manganese salts.