Abstract: Using the nine years of flowering survey data of wild flowering cherry in Gexianshan scenic spot of Xianning city from 2011 to 2019 and the observation data of the adjacent area meteorology station in the same period,the flowering characteristics and the accumulated temperature forecast indicators of the original ecological flowering cherry community in Gexianshan scenic spot were analysed according to the basic theory of constant accumulated temperature of crop development, using the phase rule of accumulated temperature, double scale statistical recursive generalized discrete coefficient method. The results showed that the average dates of the initial time of flowering and the full-bloom stage of flowering cherry in Gexianshan scenic spot were March 11 to March 12 and March 15 to March 16, respectively, and the average interval of the initial time of flowering and the full-bloom stage was 4~5 days. The florescence index of flowering cherry in scenic spot were since January 11, ≥1.1 ℃ phase accumulated temperature of 316.8 ℃ and 369.7 ℃ respectively by the stage accumulated temperature method. The mean error of this index in predicting flowering was 2~3 days.

Key words: Gexianshan scenic spot, flowering cherry, flowering period, forecast index, Xianning city