Welcome to Chinese Agricultural Science Bulletin,
The Effects of Potassium Fertilizer on Physiological Characteristics and Triterpene Contents in Betula platyphylla Suk.
姬晓明 齐凤慧 尹静 詹亚光
Chinese Agricultural Science Bulletin . 2012, (4): 13 -17 .  DOI: 10.11924/j.issn.1000-6850.2011-2837