EFFECTS OF NITROGEN AVAILABILITY IN SOIL ON THE CONTENTS OF FLAVONOIDS AND CAFFEATES IN A MEDICINAL PLANT, ERIGERON BREVISCAPUS
SU Wen-Hua, ZHANG Guang-Fei, ZHOU Hong, ZHANG Ya-Ni
Chin J Plant Ecol . 2009, (5): 885 -892 .  DOI: 10.3773/j.issn.1005-264x.2009.05.007