东北主要珍贵阔叶树种物候观测初报

Preliminary Study on Phenological Observation of Main Valuable Broad-leaved Tree Species in Northeastern China

本文报道了水曲柳、核桃楸、黄波罗、紫椴、赤杨这些珍贵阔叶用材树种的各物候相及物候期，给林业生产和科研工作提供了科学依据。

This paper reports the characteristics and occuring time of pheno-logy about some valuable broad一leaved timber species(Fraxinus mandshurica Rupr.,Juglans mandshurica Maxim.,Phellodendron amurense Rupr.,Tilia amurensis Rupr.,Alnus japonica S.et Z.)and provides a scientific basis for forestry production andscientific research.