秃杉苗期生长分析及不同种源比较

Comparisons between the Different Provenances of Taiwania flousiana Gaussen at Nursery Stage

秃杉 (Taiwania f lousiana Gaussen)种源育苗试验 ,共收集贵州剑河 ,云南龙陵、昌宁、腾冲以及湖北利川 5个种源 ,在东至县播种育苗。对各种源苗高、地径、冠幅以及生物量进行测定分析。结果表明 :(1 )秃杉各种源的生长物候与生态适应性无明显差异 ,具有良好的生态适应性 ;(2 )苗期生长出现两个高峰 ,分别在 8月中旬和 1 0月中旬 ;(3 )秃杉种源内各生长性状存在显著差异 ,其苗高、地径、冠幅、鲜重、干重变幅分别为 1 1 .0～ 1 3 .8cm、 0 .2 3～ 0 .2 8cm、 4.8～ 1 2 .3 cm、 1 .3 9～ 3 .2 2 g、 0 .63～ 1 .47g。经综合评定 ,表现较好的种源依次为 :贵州剑河、云南龙陵。

The bio characters of 5 provenances collected from different regions were studied in this paper.The results showed that there was no significant difference in seedling growth period and ecology adaptability,and there were two growth peaks during the seedling growth.The performance showed the following order-Jianhe>Longling>Changning.