PROBLEM TO BE SOLVED: To provide a water spraying system that enables a water spraying range immediately after the start of water spraying, to reach a target water spraying range, and an agricultural house using the water spraying system.SOLUTION: A water spraying system includes a water supply pump 2 that supplies water, a pressure accumulation tank 3 that pressurizes and accumulates the water supplied from the water supply pump 2, and a water spraying tube 4 that is supplied with the water pressurized from the pressure accumulation 3, and has water spraying holes 4a that spray the pressurized water on the tube wall.【課題】 散水開始直後の散水範囲が、目標とする散水範囲に到達可能な散水システム、およびこれを用いた農業用ハウスを提供する。【解決手段】 水を供給する送水ポンプ２と、送水ポンプ２から供給された水を加圧して蓄える蓄圧タンク３と、蓄圧タンク３から加圧された水を供給され、この加圧された水を散水する散水用の孔４ａを管壁に設けた散水チューブ４とを備える。【選択図】図１
