关键词: 迎春, 始花期, 预报

Abstract: The beginning of flowering period of winter jasmine (Jasminum nudiflorum L.) and temperature in Shijiazhuang from 1982 to 2003 were analyzed.The results showed that the beginning of flowering period of winter jasmine was significantly negative related both with the air temperature during February and March and with negative accumulated temperature in winter.The needed accumulated temperature for flowering of winter jasmine was 154 ℃.The beginning date of winter jasmine's flowering period became earlier significantly.Based on these results, the forecast model for the beginning of winter jasmine's flowering period was established.

Key words: Winter jasmine, Winter jasmine, Beginning of flowering period, Forecast