Results were as follows: The nitrogen content,amount of nitrogen-uptaking,root weight and root wount flow of Japonica rice Wuyujing 3 Were raised with the increment of nitrogen-applying level.

• 结果表明：粳稻旱秧本田期植株含氮量、吸氮量、根重和根系伤流强度均随施氮量的增加而增加。