| 摘要 |
PURPOSE: A floodgate for an irrigation canal is provided to prevent damage to rice plants occurred by cold agricultural water, and to prevent foreign materials and soil from flowing into a rice field. CONSTITUTION: A floodgate(100) for an irrigation canal comprises a first floodgate part(110) and a second floodgate part(130). The first floodgate part is installed in an irrigation canal(R), and blocks or flows agricultural water(W) flowing in the irrigation canal. The second floodgate part guides only surface water of the agricultural water blocked by the first floodgate part to a rice field. |
