PROBLEM TO BE SOLVED: To provide a hydroponics method of leaf vegetables which is excellent in taste, and hard to discolor even if it is kept for a long period after harvesting. SOLUTION: This hydroponics method of the leaf vegetables includes cultivating seedlings after raising seedling by first flooded solution culture for 4-13 days, spray culture for 20-8 days, and second flooded solution culture for 1-3 days. In the spray culture, a nutrient solution brought into mist of a size of average 70-180μm is used. Each of the nutrient solutions of the first flooded solution culture, the spray culture, and the second flooded solution culture contains water soluble calcium salt, and a concentration of each of the nutrient solutions is each 0.7-1.3 mS/cm, 0.3-0.7 mS/cm, and 0.1-0.4 mS/cm, at an electrical conductivity excluding water soluble calcium salt. COPYRIGHT: (C)2010,JPO&INPIT
