Analysis on Supercooling Phenomenon in the Clone of Poplar
YU Guan-xia1, RUAN Xi-gen1, FENG Wei-zhong1, HUANG Min-ren2
JOURNAL OF NANJING FORESTRY UNIVERSITY . 2006, (02): 67 -70 .  DOI: 10.3969/j.jssn.1000-2006.2006.02.016