Abstract：A three-line Indica-Japonica hybrid mid-season rice variety Yongyou 4949 was bred with Yongjing 49A as female parent and F9249 as male parent by Ningbo Seed Co., Ltd. and Wuhan Jiahe Biotechnology Co., Ltd. From 2017 to 2018, machine-transplanted and machine-harvested of ratooning rice was introduced into Shuiyuan Township of Jian,ou City. The first crop of rice showed regular growth, compact plant type, high seed setting rate, good yield and moderate resistance to rice blast. In the regeneration season, the performance was good. The mechanized planting performance and high yielding cultivation techniques of Yongyou 4949 as ratooning rice in Shuiyuan Township of Jian,ou City were summarized.
