Large amounts of water is good for fishing but bad for rice production with water standing in paddy fields for a prolonged period of time; on the other hand, if there is a little water it is good for rice production but no good for fishing; as such, fishing and farming were at odds with each other.
漁業と農業は、水が多い時は漁業に都合がよいが田の水が長く引かず米の生産が悪く、逆に水が少なく米の生産が良好なときは漁が悪いという相克の関係にあった。