【作者】 陈复振； 彭补拙；

【Author】 Chen Fuzhen Peng Buchuo ( Wuxi Tea Research Institute, 214222; Nanjing University, 210008)

【机构】 无锡市茶叶研究所； 南京大学；

【摘要】 茶树为多年生常绿叶用植物,原产热带、亚热带地区,具有喜温、喜湿、喜漫射和酸性土壤等生态特性,对我国不同地带的茶园生态系统已有不少研究,但多局限于以下几方面:茶叶品质与生态环境的关系;茶叶生产的适宜区域和地理分布规律;黄棕壤地区茶园人工生态系统中Al、F的含量,每年逐还量,以及土壤中存在的形态,转化机制及其对土壤与茶叶品质的影响等,而对多种元素的生物循环特征尚缺乏全面、系统的研究。本文以江苏宜兴茶园为研究区,并建立观测地,通过一年半的定位观测,重点分析了茶园生态系统中F和Al、Fe、Mn、Cu、Pb、Zn、Cd、Ni及Cr等金属元素通过大气降水、降尘和人工施肥等途径输入茶园系统的含量和总量,以及通过土壤流水,鲜叶采摘等形式输出茶园系统的含量和总量,以此探讨该地区人工生态系统中这些元素生物化学循环的过程和特点,这对丰富生态系统理论,改善茶园生态环境,提高茶园系统生产力,更好地指导茶园合理布局和茶叶生产都具有理论和实践意义。更多还原

【Abstract】 Tea bush is a perennial plant, growing in temperate and humid regions with acid soil condition. Researches on tea garden ecosystem in different zones were often limited in following aspects: relationship between tea quality and ecosystem, optimum tea production region and its regulation of geographical distribution content of AI and F in artificial bio-system tea garden with yellow brown soil, annual capacity of elements circulated to soil, existing form of elements in soil, transformation mechanism and influence on tea quality and soil. However, there was not an overall and systematic research on bio-circulation characteristic of various elements. This paper presented analytical results about the contents of AI, Fe, Mn, Cn, Zn, Cd, Ni, Cr and their total contents circulated to tea garden by rainfall, dust and fertilization, and also their output contents and totals by soil erosion and leaf plucking. The purpose was to understand the whole course of biochemical circulation of those elements in artificial ecosystem and its circulation characteristic. The results of the research might have theoretical and practical significance to enrich bio-system theory, improve ecological surroundings of tea garden, increase yield of tea garden and establish the rational distribution of tea garden.更多还原