A research team led by Prof. Zhu Defeng and Prof. Chen Huizhe at the China National Rice Research Institute innovated a rice seedling raising mode in overlaid tray suitable for the rice transplanting machine. The team also developed related equipment for sowing and intelligent temperature and humidity control in greenhouses. Using technology leads to a neat and robust seedling emergence and increases the production and efficiency dramatically. The technology solves key transplanting problems of the rice machine like poor seedling emergence, irregular and dead seedlings, providing technical support for the development of rice production mechanization and socialized service.