摘要
分析了6种树木开花始期和展叶盛期与历年温度、积温的相关关系．结果表明山桃花开花前第二天日平均气温较低的年份，开花始期将推迟，二者呈极显著负相关关系，垂柳开花始期与开花当天平均气温呈显著负相关关系．山桃的花始期与3月、4月的平均气温值呈极显著负相关关系，榆叶梅、金钟连翘和紫丁香开花始期与4月份的平均气温呈极显著负相关关系．除榆树外，其他5种树木开花始期与3～4月、4月、4～5月、4月下旬积温均呈负相关关系．榆树展叶期与其前第二天平均气温呈显著负相关关系，其他5种树木的展叶盛期与温度及积温的关系与开花始期相似．
This paper gives an analysis on the relationship between temperature and initiated flowering stage and peak period of expanded leaves about six trees in Shenyang. The relationships between active accumulated temperature and initiated flowering stage and peak period of expanded leaves about six trees are studied too. It shows that the relationships between the flowering stage of Prunus davidiana Franch and the average temperature of two days before flowering stage is remarkable positive correlation, the relationships between the flowering stage of Salix babylonica L. and the average temperature of the flowering stage day is positive correlation, the relationships between the flowering stage of Prunus davidiana Franch and average temperature of March and April are remarkable positive correlation, the relationships between the flowering stage of Syringa Oblate Lindl and Pronos triloba Lindl. Vat. plena Dipp ,and Forsythia viridissima Lindl var. koreana Rehd and average temperature of April are positive correlation, the flowering date of Ulmus pumila L. has no apparent relationship with the mean temperature month and other mean month＇s temperature, the other five trees＇ initiated flowering date have positive correlativity with the active accumulated average temperature of March to April, April, April to May and the last ten-day of April. The relationships between the peak period of expanded leaves stage of Ulmus pumila L. and the average temperature of two days before peak period of expanded leaves stage is remarkable positive correlation, the relationships of other 5 trees＇ peak period of expanded leaves stage with the mean temperature, monthly mean temperature and active accumulated temperature are similar to their initiated flowering stage.
出处
《沈阳师范大学学报（自然科学版）》
CAS
2006年第1期96-99,共4页
Journal of Shenyang Normal University:Natural Science Edition
关键词
树木
春季物候期
温度
trees
spring phenophase
temperature
