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用硝酸——高氯酸消煮湿灰法制样,使用日本岛津 AA—630—12分析仪测定了槠叶齐、湘波绿、福鼎大白茶三个无性系良种茶树根系含铜量;用0.1N HCI 浸提,原子吸收法测定土壤有效铜,结果如下:(1)茶树根系含铜量,吸收根占71.9％,侧根占18.7％,主根占9.4％;(2)根系含铜量品种间有差异,但吸收根>侧根>主根的分布趋势相同;(3)根系含铜量,吸收根9月最多,侧根、主根3、4月较多;(4)根系含铜量,以3龄茶树为基数,16龄高80％,21龄高117％;(5)根系类型含铜量分配率与树龄有关。3龄茶树,吸收根占53.3％,侧根占27.3％,主根占19.4％;21龄茶树,吸收根占65.5％,侧根占24.5％,主根占10.0％;(6)茶园土壤有效铜与植茶前比,3龄茶园高3.4％～3.9％,21龄茶园高53.9％～62.1％。
The nitrate content-perchloric acid was used to digest and dehumidify the wet-ash samples, and the copper content in the root system of three elite improved varieties of tea plantations such as Qiye Qi, Xiangbo Green and Fuding Dabaicha was determined by Shimadzu AA-630-12 analyzer. The results showed as follows: (1) The content of copper in the root of tea tree was 71.9% for root, 18.7% for lateral root and 9.4% for main root; (2) (3) Root copper content, root absorption in September most, lateral roots, main roots in April and April more; (4) copper content in the root, with 3 Age-based tea tree as the base, 16-year-old high 80%, 21-year-old high 117%; (5) root type copper content distribution rate and age. The 3rd instar tea tree had 53.3% of absorbed roots, 27.3% of lateral roots and 19.4% of main roots. The 21-year-old tea trees had 65.5% of absorbed roots, 24.5% of lateral roots and 10.0% of main roots. (6) , The height of the third-grade tea plantation was 3.4% -3.9%, and that of the 21-year-old tea plantation was 53.9% -62.1%.