一、前言 這個初步調查資料是總結了1953—1954年二年來在妙峯山一帶調查樹種,採集標本時所作物候觀察的一部分——花期。樹木花期的了解,對於林業工作有重要的意義,一個樹種造林的失敗,常常是由於我們對這個樹種生物學特性的瞭解掌握的程度不够或不全面的緣故,今後我們要大力展開林木育種工作,要作雜交對於花期的了解便更重 I. Preface The preliminary survey data summarizes the surveyed species in the area of ​​Miaofengshan during 1953-1954 and the observed part of the phenology during the collection of specimens - the flowering period. The understanding of the flowering season of trees is of great significance to the forestry work. The failure of afforestation of a tree species is often due to the fact that we do not have enough or incomplete understanding of the biological characteristics of the tree species. In the future, we must vigorously carry out tree breeding work, To be hybrids for flowering will be more important