| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic watering device for paddy fields to automatically supply water to the paddy fields and capable of stopping the water supply. SOLUTION: This automatic watering device has a ball tap on the paddy field and a closeable gate placed between an irrigation canal and the paddy field. A water container is used as the gate and the gate is operated by the action of the ball tap. COPYRIGHT: (C)2005,JPO&NCIPI
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