摘要
通过对沈阳历年京桃始花日期的分析,得出京桃始花日期主要和开花前第2天日平均气温和3～4月平均气温呈显著负相关,京桃开花早晚可预测4月中下旬温度的高低;并认为导致花芽不能正常膨大的原因主要是3月10日前后最低气温在-10℃以下,而且低温前后温度变化较大。
The data of the beginning flower stage of Prunus davidiana Franch for past years was analyzed in this paper,its beginning flower stage had a significant negative correlation with the mean temperature of two days before the beginning flower stage,and the mean temperature in March and April of the same year had a negative correlation with it.The time of beginning flower stage can forecast the temperature of the middle and last ten-day of April.The cause that bud could not be swelling was that the lowest
temperature under - 10 ℃ around 10th March with big change of temperature before-and-after thelowest temperature.
出处
《安徽农业科学》
CAS
北大核心
2007年第15期4517-4518,4528,共3页
Journal of Anhui Agricultural Sciences
关键词
京桃
春季物候期
气温
Prunus davidiana Franch
Spring phenophases
Temperature
