重庆市永川城区川山茶生长现状及影响因子研究  

Study on the growth status and impact factors of Sichuan Camellia in Yongchuan urban area of Chongqing city

作　　者：李玲莉 田中 高晓军 何永鉥 周利 LI Ling-li;TIAN Zhong;GAO Xiao-jun;HE Yong-shu;ZHOU Li(Chongqing Landscape and Gardening Research Institute/Chongqing Urban Landscape Engineering Technology Research Center/Chongqing Key Laboratory of Germplasm Innovation and Utilization of Native Plants,Chongqing 401329,China;Chongqing Yongchuan District Landscaping Service Office,Chongqing 402160,China;Chongqing Dazu District Park Management Office,Chongqing 402360,China;Chongqing Nanshan Botanic Garden Administration Center,Chongqing 400065,China)

机构地区：[1]重庆市风景园林科学研究院/重庆市城市园林绿化工程技术研究中心/川渝共建乡土植物种质创新与利用重庆市重点实验室,重庆401329 [2]重庆市永川区园林绿化服务所,重庆402160 [3]重庆市大足区公园管理所,重庆402360 [4]重庆市南山植物园管理处,重庆400065

出　　处：《湖北农业科学》2022年第10期93-98,共6页Hubei Agricultural Sciences

基　　金：重庆市科技计划项目(cstc2011pt-gc80019);重庆市城市管理科技计划项目(城管科字2018第(01)号)。

摘　　要：对重庆市永川城区24个地点内川山茶(Camellia japonica L.)植株的生长指标、土壤质量和直径≥1 cm根系空间分布进行测定,探索川山茶市街应用的影响因子。结果表明,永川城区市街绿化常用川山茶苗木规格为地径4.0~7.9 cm、株高1.61~2.32 m、冠幅1.31~1.96 m,基于新生枝条长度≥4.11 cm、粗度≥0.241 cm的评价标准,62.5%川山茶的生长势达到中等以上水平;川山茶为喜半阴植物,也可种植于全光照环境,道路绿地中全光照和半遮阴环境下,新生枝条长度和粗度无显著差异;现有栽植土壤pH偏碱性,有机质含量较低。在川山茶日常养护中,可通过土壤调酸、增施化肥和提高距树干1 m范围内40 cm深土壤中的有机质含量等措施,恢复植株生长势。The growth index,soil quality and root spatial distribution(diameter≥1 cm)of Sichuan Camellia seedlings in 24 sites of Yongchuan urban area of Chongqing city were investigated,to explore the impact factors of Sichuan Camellia in landscape application.The results showed that the seedlings with a diameter of 4.0~7.9 cm,a height of 1.61~2.32 m,and a crown width of 1.31~1.96 m were widely used in the urban landscape application.Based on the evaluation standard of growth potential(the new shoots length≥4.11 cm or thickness≥0.241 cm),62.5%of Sichuan Camellia seedlings was above the medium level;Sichuan Camellia seedling usually lives in semi-shaded envirenment,which could also be planted in full light environment.There was no significant difference in the length and diameter of new shoots between seedlings planted in road green space under full light and semi-shaded environment;the slightly alkaline pH value and the lower content of organic matter were the characteristic in the investigated soil.In daily maintenance of Sich⁃uan Camellia,adjusting soil acid,increasing chemical fertilizer and improving the content of organic matter in the depth of 40 cm soil within 1 m around the tree trunk were suggested to restore the plant growth potential.

关 键 词：川山茶(Camellia japonica L.) 生长势 根系空间分布 永川城区 

分 类 号：S685.14[农业科学—观赏园艺]