Investigation and Analysis of the Damage of Frost to Ficus virens in Guangyuan City

To provide a reference for scientifical and reasonable preventing and reducing damage of frost freezing to Ficus Virens (F. Virens), analysis was made of the freeze injury of F.virens from 1998 to 2014.Some statistic analyses were used to study the degree of freeze injury, cultivation region and extremely low temperature. The results were as follows.F.virens enhanced the adaptability to frost and the proportion of freeze injury decreased year by year. Based on the degree of freeze injury, there was a declining trend in the order of Wanyuan and Xiaxi region > Dongba region > Nanhe and Shangxi region > Old town region.