在富裕县龙安桥镇小河东村有位能人李老汉,名叫李金维,十几年来一直经营家里的八亩稻田,管理稻田不算累,就是放水时候比较烦人。老汉经过多年的琢磨,研究出来一种为稻田自动放水的器具,自动放水器根据稻田的地势和水稻生育期,适时调整给水器的水位线,就可以自动完成稻田的放水工作。 In the Xiaohedong Village, Longanqiao Township, Fuyu County, there is a person named Li Laohan who is named Li Jinwei. He has been operating eight acres of rice fields in his family for more than ten years. The management of rice fields is not tired, and it is annoying when the water is discharged. After many years of pondering, the old man developed a device that automatically discharges water for rice fields. The automatic water ejector can automatically adjust the water level of the water supply device according to the topography of the paddy field and the rice growth period.