%0 Journal Article %A WEI Xiao-Hui %A YIN Dong-Sheng %T Effect of Nitrogen Fertilization on Morphological and Physiological Characteristics of Physocarpus amurensis Seedlings %D 2018 %R 10.7525/j.issn.1673-5102.2018.06.005 %J Bulletin of Botanical Research %P 828-833 %V 38 %N 6 %X Growth performance, biomass accumulation and distribution, photosynthetic characteristics, non structural carbon (NSC) accumulation of one-year-old seedlings of Physocarpus amurensis was studied under four kinds of nitrogen fertilization treatment by pot experiment. The results showed that nitrogen fertilization promoted the growth of basal diameter, branch number, and crown width of seedlings. The nitrogen fertilization increased the biomass of stem, leaf and plant (P<0.05) and biomass allocation ratio of stem, and decreased biomass allocation ratio of root. The nitrogen fertilization significant increased net photosynthetic rate, leaf nitrogen content, soluble sugar and NSC in stem (P<0.05), and significant decreased soluble sugar and NSC content in root (P<0.05). However, there were no significant different in most of the parameters among nitrogen fertilization treatments (N1, N2 and N3), indicating that the seedlings of P.amurensis were not sensitive to the change of soil nutrients. %U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2018.06.005