Chinese Bulletin of Botany     2002 19 (04):  477-483    ISSN: 1674-3466:  CN: 11-5705/Q The Columnar Soilless Cultures （CSC） of Flower Plants GONG Song-Fu　LI Zhi-Zheng (Shanghai Institute of Plant Physiology， The Chinese Academy of Sciences， Shanghai 200032) Received 2001-07-02  Revised 2001-09-10  Online 2002-07-20 Reference   Corresponding author: GONG Song-Fu