三种常用道路绿化植物根系生长状况研究  

Study on root growth of three common road greening plants

作　　者：李玲莉 余志勇 邹世慧 王宝宁 周利 LI Ling-li;YU Zhi-yong;ZOU Shi-hui;WANG Bao-ning;ZHOU Li(Chongqing Landscape and Gardening Research Institute,Chongqing 401329,China;Chongqing Urban Landscape Engineering Technology Research Center,Chongqing 401329,China;Chongqing Liangjiang New District Municipal Garden Water Conservancy Management and Protection Center,Chongqing 401123,China;Chongqing Nanshan Botanic Garden Administration Center,Chongqing 400060,China)

机构地区：[1]重庆市风景园林科学研究院,重庆401329 [2]重庆市城市园林绿化工程技术研究中心,重庆401329 [3]重庆两江新区市政园林水利管护中心,重庆401123 [4]重庆市南山植物园管理处,重庆400060

出　　处：《湖北农业科学》2020年第10期111-115,共5页Hubei Agricultural Sciences

基　　金：重庆市科技计划项目(cstc2011pt-gc80019,cstc2017jxjl00025)。

摘　　要：以黄葛树(Ficus virens var.sublanceolata)、小叶榕(Ficus microcarpa L.)和春鹃(Rhododendron pulchrum Sweet)为试验对象,通过挖取南向1 m×1 m×1 m的土壤剖面观察其根系的分布状况,发现在距树干南向1 m处,黄葛树88.1%及以上的根系主要分布于0~60 cm深的土层中,小叶榕92.0%及以上的根系主要分布于0~60 cm深的土层中,春鹃43.4%及以上的根系主要分布于0~30 cm深的土层中;3种植物的须根在石骨子碎块和砖块缝隙中可发育成扁平状或云片状,其根系结构特点更适合重庆市园林绿化土壤的现状。Ficus virens var.sublanceolata,Ficus microcarpa L.and Rhododendron pulchrum Sweet were taken as test objects,1 m×1 m×1 m soil profile in south direction was dug to observe the distribution of the root system.It was found that from trunk at a distance of about 1 m in south direction,above 88.1%of the roots mainly distributed in the 0 to 60 cm deep soil layer for Ficus virens var.sublanceolata,above 92.0% of the root system was mainly distributed in the 0 to 60 cm deep soil layer for Ficus microcarpa L.,above 43.4% of the root system was mainly distributed in the 0 to 30 cm deep soil layer for Rhododendron pulchrum Sweet.In addition,fibrous roots of the three plants can develop into flat or cloud-like structures in the gaps between purple soil fragments and bricks,and their root structure characteristics are more suitable for the status quo of landscape greening soil in Chongqing city.

关 键 词：黄葛树(Ficus virens var.sublanceolata) 小叶榕(Ficus microcarpa L.) 春鹃(Rhododendron pulchrum Sweet) 根系分布 

分 类 号：S731.2[农业科学—林学]