Abstract: Under different nitrogen levels, growth, quality and yield of Taraxacum mongolicum were studied. The results indicated that there were significant differences in net photosynthetic rate, contents of chlorophyll, nitrate, chlorogenic acid, soluble protein and yield among different nitrogen levels treatments. with he increase of nitrogen levels, net photosynthetic rate, contents of chlorophyll, nitrate, chlorogenic acid and soluble protein increased, leaf area and yield per plant increased until nitrogen level reached 0.250 g/kg and then decreased, but contents of crude-fibre changed oppositly. Under nitrogen level 0.250g/kg medium, as well as producing lkg commodity fresh weight needed 4.4g nitrogen, leaf area, yield per plantand activity of NR were the highest among the four treatments, crude-fibre content was the lowest, nitrate contentwas lower, while the contents of chlorogenic acid, Vc and soluble protein were higher.

Key words: Taraxacum mongolicum, Nitrogen application Levels, Quality

CLC Number: 

• S553