Ledong, Hainan, the first test and demonstration of new saline-alkali tolerant rice varieties yielded an average yield of 540.49 kg per mu. The Hainan Ledong new saline-alkali tolerant rice variety test and demonstration base recently achieved its first harvest. According to expert estimates, this piece of saline-alkali tolerant rice has a yield of 540.49 kg per mu. According to reports, saline-alkali tolerant rice has a strong adaptability, which is not only resistant to saline-alkali, but also resistant to wind, waterlogging, diseases and insect pests. Next, through the demonstration and promotion of saline-alkali tolerant rice varieties, Ledong will speed up the transformation and landing of southern propagation achievements, improve the utilization rate of salt-tolerant land and abandoned land, and promote farmers to increase production and income.