| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for dividing a paddy field, designed to eliminate every uselessness when divided in a quadrangular form. SOLUTION: This method for dividing a paddy field comprises dividing (1) the paddy field in a hexagonal form, setting up (4) an intake and (5) an outlet of underdrain at each of the divided paddy fields, and letting (2) an irrigation canal pass between the divided paddy fields (1) and (1).
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