When can Nianyushan Reservoir be irrigated in spring in 2023?

From the end of March to the middle of April. According to official website's inquiry about Nianyushan Reservoir Management Bureau, the department held a meeting in March 2023 and announced that spring irrigation would start from late March to mid-April 2023. During this period, the weather has begun to warm up and the soil temperature has gradually increased, which is suitable for crop growth. Nianyushan Reservoir is located in Shangcheng County, southeast of Henan Province. It is a large reservoir in Huaihe River basin, which is in the transition zone from subtropical zone to warm temperate zone and belongs to continental humid monsoon climate.