陇南山区黄瑞香天然种群实生苗更新研究

doi:10.11733/j.issn.1007-0435.2021.06.018

草地学报 ›› 2021, Vol. 29 ›› Issue (6): 1277-1285.DOI: 10.11733/j.issn.1007-0435.2021.06.018

陇南山区黄瑞香天然种群实生苗更新研究

闫芳^1,3, 张春云², 王勤礼¹, 王建东², 王海平², 徐涛¹, 张春梅^1,3, 陈叶³, 朱高⁴

1. 河西学院祖师麻原植物应用技术研究所, 甘肃张掖 734000;
2. 甘肃泰康制药有限责任公司, 甘肃武威 733000;
3. 甘肃省河西走廊特色资源利用重点实验室, 甘肃张掖 734000;
4. 肃南明海林场, 甘肃张掖 734000

收稿日期:2020-11-05 修回日期:2021-01-07 出版日期:2021-06-15 发布日期:2021-07-05
作者简介:闫芳(1980-)，女，汉，陕西宝鸡人，博士，研究员，主要从事药用植物资源与利用方面研究工作，E-mail:xt_34@163.com
基金资助:
甘肃省陇原青年创新创业人才团队项目（2020RCXM130）；甘肃省高等学校产业支撑计划项目（2021C-07；2019C-01）资助

Seedling Regeneration on Daphne giraldii Nitsche in Longnan Mountainous Area

YAN Fang^1,3, ZHANG Chun-yun², WANG Qi-li¹, WANG Jian-dong², WANG Hai-pin², XU Tao¹, ZHANG Chun-mei^1,3, CHEN Ye³, ZHU Gao⁴

1. Applied Technology Research Institute on original plants for Zushima of Hexi University, Zhangye, Gansu Province 734000, China;
2. Taikang Pharmaceutical limited liability company of Gansu province, Wuwei, Gansu Province 733000, China;
3. Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Zhangye, Gansu Province 734000, China;
4. Minghai Forest Farm of Sunan County, Zhangye, Gansu Province 734000, China

Received:2020-11-05 Revised:2021-01-07 Online:2021-06-15 Published:2021-07-05

摘要/Abstract

摘要： 本研究以陇南山区黄瑞香（Daphne giraldii）天然种群为研究对象，分析了半阳坡和半阴坡生境下黄瑞香天然种群种子幼苗转化率，实生苗年龄结构和数量，生长状况，干物质积累与分配，并对影响黄瑞香实生苗生长发育的环境因子、生境因子进行了相关性分析。结果表明：半阳坡和半阴坡黄瑞香种子幼苗转化率均较低，且实生苗密度均随苗龄的增长而减小；黄瑞香实生苗各生长指标在后期生长中表现为半阳坡>半阴坡，叶面积和主根长则相反；两个生境黄瑞香实生苗干质量积累随苗龄增长而增加，且半阳坡>半阴坡；实生苗冠幅、高度和根茎干重与总盖度、灌木层盖度、草本层盖度、海拔呈负相关关系，与土壤有机质、速效氮、速效磷和速效钾含量呈正相关关系。土壤条件和总盖度是影响黄瑞香实生苗更新的主要因子，半阳坡生境更有利于黄瑞香实生苗的生长发育。

关键词: 黄瑞香, 实生苗更新, 坡向, 陇南山区

Abstract: In this study,the natural population of Daphne giraldii Nitsche in Longnan mountain region(Gansu,China) was taken as the research objective to understand its seedling conversion rate in two different habitats (semi-sunny slope and semi-shady slope),seedling age composition,and seedling amount,its growth status,as well as its dry matter accumulation. Meanwhile,the correlation of environmental factors and habitat factors affecting the seedling growth and development of D. giraldii was also analyzed. The results showed that:The seedling conversion rates of D. giraldii from the two habitats were both relatively lower and the seedling density decreased as seedling aging;in the late growth stage,the seedling in semi-sunny slope habitat had a better performance of seedling crown,seedling height,root breadth,basal diameter,and branch number while the seedling in semi-shady slope habitat had a larger leaf area and a longer root length. In the two habitats,the seedlings’ dry matter accumulation both increased as seedling aging,but the seedling in semi-sunny slope habitat accumulated more. Moreover,the seedling crown,seedling height and seedling dry mass are negatively correlated with the coverage,coverage of shrub,coverage of herbage and altitude,and positive correlated with soil organic matter,available N,available P,and available K. Soil conditions and coverage were the main environmental and habitat factors affecting seedling regeneration,semi-sunny slope might be a more favorable habitat for the seedling establishment of D. giraldii.

Key words: Daphne giraldii, Seedling regeneration, Aspect, Longnan mountainous area

中图分类号:

S793

闫芳, 张春云, 王勤礼, 王建东, 王海平, 徐涛, 张春梅, 陈叶, 朱高. 陇南山区黄瑞香天然种群实生苗更新研究[J]. 草地学报, 2021, 29(6): 1277-1285.

YAN Fang, ZHANG Chun-yun, WANG Qi-li, WANG Jian-dong, WANG Hai-pin, XU Tao, ZHANG Chun-mei, CHEN Ye, ZHU Gao. Seedling Regeneration on Daphne giraldii Nitsche in Longnan Mountainous Area[J]. Acta Agrestia Sinica, 2021, 29(6): 1277-1285.

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https://manu40.magtech.com.cn/Jweb_cdxb/CN/Y2021/V29/I6/1277

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陇南山区黄瑞香天然种群实生苗更新研究

Seedling Regeneration on Daphne giraldii Nitsche in Longnan Mountainous Area

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