赣中地区麻栎优良种源初步筛选

通过对幼林期麻栎种源试验林进行生长调查,初步筛选出适宜赣中地区发展的麻栎优良种源。在赣中地区的永丰官山林场采用完全随机区组设计,开展了麻栎种源试验,调查了32个种源2年生麻栎的保存率、苗高、地径和生物量的变化。结果表明:大多数种源麻栎保存率在89%以上,苗高和地径年生长量以及单株生物量在不同种源之间具有较大变异;通过聚类分析将参试的32个种源划分为3组,第1组为优良种源,包括浙江、贵州等地的11个种源;第2组为较差种源,第3组为一般种源。研究结果为该区域麻栎优良种质资源初步筛选提供了依据。

Superior Provenances of Quercus acutissima: A Preliminary Selection in Central Jiangxi

Objective]We investigated the growth of young Quercus acutissima through provenance trials to select suitable Quercus acutissima provenance forests for middle Jiangxi province.Method]Provenance trials of Quercus acutissima was carried out at Yongfeng Guanshan Forest Farm in the Central Jiangxi Province, using randomly complete block design. 2-year-old seedlings of 32 provenances were investigated, including survival rate, tree height, ground diameter and biomass. Result]The results showed that survival rate of the most of the provenances were more than 89%, annual growth of tree height, ground diameter and plant biomass had greater variability among these provenances. These 32 provenances were divided into three groups by cluster analysis, the first group was superior provenance, including 11 provenances, such as Zhejiang, Guizhou; the second group was poor provenances, the third group was moderate provenances. Conclusion]The results of this study would provide a guide for preliminary selection of superior provenances in Q.acutissima in the Central Jiangxi Province.