The Effect of Different Nitrogen Concentrations on Fennel Plant Growth, Essential Oil Contents and Components (Foeniculum vulgare Mill.)
HE Jin-Ming, XIAO Yan-Hui, WANG Yu-Mei, PAN Chun-Xiang
Scientia Agricultura Sinica . 2012, (20): 4224 -4232 .  DOI: 10.3864/j.issn.0578-1752.2012.20.012