茶树对土壤干旱的生理反应

• 作 者: 伍炳华 韩文炎 姚国坤
• 出 处: 中国茶叶
• 发表日期: 1991年06期
• 关键词: 茶树品种 土壤干旱 大叶云峰 生理反应 茶树栽培 抗旱品种 茶叶产量 茶叶主产区 水分管理 土壤含水量

我国茶叶主产区长江中下游一带,每年夏秋期间,雨量少,晴日多,气温高,空气湿度低,蒸发量大,常有亢旱,给茶树生长以及茶叶产量和品质带来较大影响,旱害成了茶叶生产一个较为突出的问题。据研究,茶树生长所要求的土壤含水量以田间持水量的70％～90％最为适宜。一旦土壤相对含水率低于70％,对茶树的生长和代谢将产生不利影响。为了进一步明确茶树抗旱性的生理基础及遗传差异,本文以4个具不同抗旱能力的茶树品种为材料,初步研究盆栽土壤干旱条件下茶树的某些生理生化变化,旨在为茶树抗旱品种的选育以及茶树栽培上的水分管理提供参考资料。

In the middle and lower reaches of the Yangtze River, the main producing area of ​​tea in our country, there are few rainfalls, clear days, high temperature, low humidity, large evaporation and frequent drought during the summer and autumn, which greatly affect the growth of tea trees and the yield and quality of tea. Drought has become a more prominent issue of tea production. According to the research, the soil moisture content required for the growth of tea trees is most suitable for 70% to 90% of field capacity. Once the relative water content of soil is less than 70%, the growth and metabolism of tea tree will be adversely affected. In order to further clarify the physiological basis and genetic differences of drought resistance in tea plants, four tea varieties with different drought resistance were used as materials to preliminary study some physiological and biochemical changes of tea plants under soil drought conditions in tea plants. Education and tea cultivation on the moisture management to provide reference materials.