Abstract: The experiment was conducted to study the effects of new seedling raising methods on the growth and physiological characteristics of tobacco seedlings by reforming the traditional seedling plate. The results showed that the new seedling cultivation method increased the seedling rate by 10.6 percentage points, the number of root tips by 61.36%, and the agronomic characters of tobacco seedlings were greatly improved. The stem diameter, fresh root weight and dry weight increased by 45%, 144% and 150%, respectively. The seedling return time was shortened by 3.1 days. Supplementary seedling quantity reduced 10.4 percentage points. At the same time, the economic characters of flue-cured tobacco increased significantly, the yield, output value, average price and the proportion of middle-grade tobacco increased by 24.0%, 38.4%, 15.0% and 15 percentage points,respectively.

Key words: new seedling tray, root system, agronomic traits, seedling rate