Changes of polyphenol content and related enzyme activities in different leaf positions of tobacco
LI Xiao-ning, XU Xing-yang, FAN Mao-pan, YANG Qing-song, ZHAO Yan
HUBEI AGRICULTURAL SCIENCES . 2019, (9): 80 -85 .  DOI: 10.14088/j.cnki.issn0439-8114.2019.09.018