不同土壤雷竹盆栽苗地下茎分枝数量特征及其分布格局

高贵宾; 温星; 吴志庄; 钟浩; 潘雁红; 张小平

doi:10.11913/PSJ.2095-0837.2022.40565

不同土壤雷竹盆栽苗地下茎分枝数量特征及其分布格局

高贵宾^1,2,3,
温星^1,2,3,
吴志庄^1,2,3,
钟浩^1,3,
潘雁红^1,3,
张小平^1,2,3, ,

1. 国家林业和草原局竹子研究开发中心, 杭州 310012;
2. 浙江杭嘉湖平原森林生态系统国家定位观测研究站, 杭州 310012;
3. 竹林生态与资源利用国家林业和草原局重点实验室, 杭州 310012

基金项目:

国家自然科学基金(32001378)

中央级公益性科研院所基本科研业务费专项(CAFYBB2021QB007)。

详细信息

作者简介:
高贵宾(1982-),男,助理研究员,研究方向为竹林培育学(E-mail:anshu998@163.com)。

通讯作者:
张小平,E-mail:zxpyg2016@126.com

中图分类号: S795
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- 文章访问数: 250
- HTML全文浏览量: 10
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出版历程
- 收稿日期: 2022-01-11
- 修回日期: 2022-04-18
- 网络出版日期: 2022-10-31
- 发布日期: 2022-08-27

Quantitative characteristics and distribution patterns of rhizome branches of potted Phyllostachys praecox C. D. Chu et C. S. Chao ‘Prevernalis’ seedlings in different soils

Gao Gui-Bin^1,2,3,
Wen Xing^1,2,3,
Wu Zhi-Zhuang^1,2,3,
Zhong Hao^1,3,
Pan Yan-Hong^1,3,
Zhang Xiao-Ping^1,2,3, ,

1. China National Bamboo Research Center, Hangzhou 310012, China;
2. National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou 310012, China;
3. Key Laboratory of Bamboo Forest Ecology and Resource Utilization of National Forestry and Grassland Administration, Hangzhou 310012, China

Funds:

This work was supported by grants from the National Natural Science Foundation of China (32001378) and Fundamental Research Funds of CAF (CAFYBB2021QB007).

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摘要

摘要: 为了探究竹子分株系统构建过程及其与人工经营的关系，本文对雷竹(Phyllostachys praecox C. D. Chu et C. S. Chao 'Prevernalis’)不同年龄母竹、不同覆盖年限竹林进行土壤盆栽实验，比较了各处理竹苗地下茎分枝生长差异。结果显示：在盆栽竹苗分株系统构建过程中，地下茎以竹鞭分枝为主；2年生母竹盆栽苗地下茎分枝数量普遍高于1年生盆栽苗，且地下茎分枝表现出随竹林土壤覆盖年限增加而减少的趋势；盆栽苗地下茎分枝主要分布于第Ⅱ、Ⅲ、Ⅳ分枝的鞭中位置；1年生母竹盆栽苗地下茎分枝以第Ⅱ分枝级别的鞭中、鞭梢部位为多，而2年生母竹盆栽苗则以第Ⅲ分枝级别的鞭中、鞭梢部位为多；随土壤覆盖年限增加，地下茎分枝偏向分布于较为靠前的分枝级别。研究发现，母竹盆栽苗分株系统的构建主要采取了扩大地下分枝的策略，其2年生母竹与竹鞭中部着生侧芽的分枝生长对分株系统拓展贡献率较大；竹林土壤覆盖时间越久越不利于地下茎分枝。由于竹子分株系统具有时空拓展性，其地下茎分枝生长特征尚需持续观察。
- 雷竹 /
- 分株系统 /
- 地下茎 /
- 分枝生长 /
- 竹林覆盖
Abstract: To explore the construction process of the bamboo ramet system and its relationship with artificial management, we conducted pot experiments with mother bamboo (Phyllostachys praecox C. D. Chu et C. S. Chao 'Prevernalis’) at different ages and under different mulching soils and compared growth differences of rhizome branches of bamboo seedlings. Results showed that during ramet system construction in the potted seedlings, the development of bamboo rhizome branches was dominant. The number of rhizome branches in 2-year-old mother bamboo potted seedlings was generally higher than that of 1-year-old potted seedlings, and rhizome branches decreased with the increase in soil mulch period. The rhizome branches of potted seedlings were mainly distributed in the middle of the bamboo rhizome at the Ⅱ, Ⅲ, and Ⅳ branching grades. The rhizome branch of 1-year-old potted seedlings was more in the middle and tip of the rhizome at the Ⅱ branching grade, but more in the middle and tip of the rhizome at the Ⅲ branching grade in the 2-year-old potted seedlings. With the increase in soil mulch period, the rhizome branches tended to be distributed at the front branchings. Thus, expansion of underground branches was the main strategy used in ramet system construction in the potted seedlings. Branch growth in the 2-year-old mother bamboo and lateral buds in the middle of the bamboo rhizome greatly contributed to ramet system expansion. The longer the bamboo forest soil was mulched, the less conducive it was to rhizome branching. As the bamboo ramet system exhibited spatiotemporal expansion, the growth characteristics of rhizome branches need to be continuously observed.
- Phyllostachys praecox /
- Ramet system /
- Rhizome /
- Branching /
- Bamboo forest mulching

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