Abstract: In order to reduce the production cost of rice, improve the economic benefit per unit area and achieve high and stable yield throughout the year, the no tillage direct seeding experiment of conventional single cropping late rice was carried out. The results showed that Xiushui 03 was the best in agronomic characters and yield under no tillage direct seeding, showing early maturity and high yield, which was more suitable for no tillage direct seeding than other varieties. At the same time, this experiment also studied the yield components and growth period differences of three different sowing methods, no tillage direct seeding, tillage direct seeding and manual transplanting, and analyzed and compared the input and output of three different cultivation methods.