1963—2018年中国垂柳和榆树开花始期积温需求的时空变化
|
Spatio-temporal variations in the thermal requirement of the first flowering dates of Salix babylonica and Ulmus pumila in China during 1963-2018
|
图5. 贵阳(a、b)、西安(c、d)和牡丹江(e、f)垂柳和榆树开花始期的积温需求与冷激日数的关系 |
Fig. 5. Relationship between the thermal requirements and chilling days for the first flowering dates of Salix babylonica and Ulmus pumila in Guiyang (a, b), Xi'an (c, d) and Mudanjiang (e, f) |
![]() |