| 摘要 |
PROBLEM TO BE SOLVED: To cultivate grapes regardlessly of geographical or weather conditions. SOLUTION: Concerning a method for hydroponic cultivation with which a culture solution 8 is sprinkled over a root 2 of a grape vine 1 inserted into a cultivation tank 3 while touching it with air, the root 2 is supported away from the bottom face of the cultivation tank 3 so that the root 2 cannot be immersed in the culture solution 8 stagnant on the bottom face of the cultivation tank 3. A waterproof supporting shelf 4 is formed on the bottom face of the cultivation tank 3. In this case, concerning the concentration of nitrogen in the culture solution 8, electric conductivity is from 0.5mS/cm to 1.2mS/am and the concentration ratio of nitrate nitrogen (NO3 -N) and ammonia nitrogen (NH4 -N) in a nitrogen source is from 2:1 to 3:1. |
