吴哲++黄明军++张珉++刘小艳++胡拥军++谢敏++刘欲晓

摘要：为了培养娜塔栎富根壮苗，提高娜塔栎移载造林成活率，采用完全随机区组设计，以娜塔栎1年生苗出现测苗为观测对象，每个试验处理观测30株/重复，3次重复，共90株苗。观测调查指标包括苗高和地径。结果表明： 娜塔栎容器育苗基质最佳配方为泥炭土∶黄心土∶钙镁磷肥=60∶35∶5。娜塔栎大田育苗不同浓度GGR6对苗木进行叶面喷施处理后，其苗木根长大于5 cmⅠ级侧根数、苗高生长、地径生长均有明显差异，宜采用100 mg/L GGR6喷施叶面，相比对照，娜塔栎苗木根长大于5 cmⅠ级侧根数增加60%以上， 苗高生长增加20%以上，地径生长增加15%以上。

关键词：娜塔栎；容器育苗；基质配方； GGR6；富根壮苗

中图分类号：S79224文献标识码：A文章编号：1004-3020（2017）04-0020-03

Matrix Screening Selection for Container Nursery and

Seedling Strengthening Experiment for Quercus nuttallii

Wu Zhe（1）Huang Mingjun（2）Zheng Min（2）Liu Xiaoyan（2）Hu Yongjun（2）Xie Min（3）Liu Yuxiao（4）

（1.Hunan Fulin Biotechnology Co.，LtdChangsha410004；2.Hunan Academy of ForestryChangsha410004；

3. Hunan Guanda Agriculture and Forestry Science and Technology Co.， LtdChangsha410004；

4.Forestry Bureau of Hunan YouxianZhuzhou412300 ）

Abstract： The study was carried out to seedling strengthening experiment for Quercus nuttallii.In this trial， completely randomized block design. 1yearold seedlings of Q.nuttallii provenances were observed and investigated in 30 seedlings per replicate， with 3 replicates， 90 seedlings in total. Investigation indicators include seedling height and ground diameter. The results showed as follows： The optimum formula of matrix for container nursery of Q. nuttallii was peat soil∶yellow subsoil∶CaMgP fertilizer=60∶35∶5. After spraying GGR6 on Q. nuttallii seeding leaves in field with different concentrations， there were significant differences in number of Grade I lateral root with length larger than 5 cm， seedling height growth and ground diameter growth. The measure of spraying 100mg/L GGR6 on leaves could be taken， which could increase 60% of the number of Grade I lateral root with length larger than 5cm， 20% of seedling height growth， 15% of ground diameter growth by comparing with the control.

Key words：Quercus nuttallii；container nursery； matrix formula；GGR6；root enrichment and seedling strengthening

娜塔栎（Quercus nuttallii）为壳斗科（Fagaceae）栎属，落叶大乔木；树干通直，生长较快，适应性强，为世界公认的珍贵用材树种[1]，是中国近年来引种成功的优良树种之一，主要用做高档家具、装饰、雕刻等。娜塔栎枝叶繁茂，树形高大，叶形奇特，秋色叶亮红色或红棕色，且色叶在树上保留时间长，是良好的景观树种。随着对娜塔栎在用材与园林绿化等方面价值认识的不断深入，人工造林已引起人们的极大兴趣与关注[2]。

目前已有的娜塔栎相关研究包括：尹建提出了娜塔栎全年养护管理细则[2]，曹基武开展了柳栎和娜塔栎用材林关键种植技术研究[3]，丁震亚开展了娜塔栎的种植技术与养护管理[4]，杨振亚开展了4个引种栎类树种苗期抗逆性初步研究……