闽楠种源苗期生长差异与早期选择研究

摘要

不同种源在某个特定的营林区或立地类型上所表现出来的生长形态、生理特性等不一定相同，为了选择出适宜于湖南省的闽楠优良种源，对12个闽楠种源的两年生苗高和地径生长进行了测定与分析，结果表明，不同种源间苗高和地径生长量存在极显著差异。选择出了苗高和地径生长都表现良好的27号的湖南龙山种源、12号的湖南桑植种源、17号种源的湖南金洞种源为优良种源。%Different provenances in a particular forest environment or site type, their growth morphology and physiological characteristics are not necessarily the same. In order to select superiorPhoebe bourneiprovenances that are suitable for growing in Hunan Province, the seedling height and ground diameter of two-year-old Phoebe bournei from 12 provenances were analyzed. The results show that there were very significant differences in seeding height and basal diameter among the 12 provenances; the three provenances, including No.27 Longshanprovenance, No.12 Sangzhi Provenance and No.17 Hunan Jindong provenance in Hunan province, were selected as the optimal provenances, which performed well in seeding height and basal diameter.