| 摘要 |
PROBLEM TO BE SOLVED: To provide an irrigation system capable of remarkably reducing water charges and contributing even to environmental protection by saving water resources. SOLUTION: This irrigation system is capable of successively supplying water of drain after completing water supply to a prescribed irrigation block to the next irrigation block in the irrigation system comprising a plurality of irrigation blocks A, B and C, water flow layers formed at bases of the respective irrigation blocks A, B and C and artificial lightweight soil layers formed in the upper parts of the respective irrigation blocks A, B and C and capable of carrying out water supply and drainage from the bases of the water flow layers and artificial lightweight soil layers of the respective irrigation blocks A, B and C. |
