广东省南雄、和平银杏的物候特征及其与气候因子的关系

The phenological characters of Ginkgo in Nanxiong and Heping of Guangdong Province and the relations to climatic facters

对广东省南雄、和平两地银杏（ＧｉｎｋｇｏｂｉｌｏｂａＬ．）的物候特征进行了观测和分析，探讨了南雄银杏花期及果实成熟期与气候因子的定量关系。研究表明，影响南雄银杏花期的主要气候因子是当年２月份的平均气温，影响果实成熟期的主要气候因子是花期至成熟期的积温。

Phenological characters of Ginkgo ( Ginkgo biloba L.) in Nanxiong and Heping of Guangdong Province were observed and analyzed. The quantitative relationships between bloom date and maturity date of Ginkgo in Nanxiong with some of climatic factors were studies. Result showed the main climatic factor affecting bloom date of Ginkgo in Nanxiong is the average temperature in February of the year, and the main factor affecting maturity date of Ginkgo is the accumulated temperature from the bloom date to the maturity date.