中国茶叶2023，Vol.45Issue(12)：54-58,64,6.
昼夜温差对茶树生长及茶叶品质的影响
Response of Tea Shoot Growth and Quality Change to Diurnal Temperature Difference
摘要
Abstract
Using 1-year-old tea seedlings of Sichuan tea cultivars'Chuancha NO.2'and'Emei Wenchun'as materials and three different day-night temperature differences(5,10,15 ℃)were set up in an artificial climate chamber to analyze and test the growth rate of new shoots and the changes of physiological and biochemical components.The results show that the seedling growth rate of the two tea cultivars decreased as the temperature difference between day and night increased.In the middle and late stages of treatment,the chlorophyll a and total chlorophyll contents would decrease under a large temperature difference between day and night.The variation trends of caffeine and total free amino acids in tea shoots were consistent with the influence of temperature difference between day and night.The highest contents of caffeine and free amino acids were observed under the 10 ℃ temperature difference treatment,which was significantly different from the other two treatments.The total catechin and tea polyphenol contents were the lowest under a tem-perature difference of 10 ℃,but the difference between the three treatments was not significant.The research results can provide a theoretical basis for regulating tea plant growth and improving tea quality under different ecological environments.关键词
茶树/昼夜温差/新梢生长/生化成分Key words
tea/diurnal temperature difference/shoot growth/biochemical composition分类
农业科技引用本文复制引用
李慧丽..昼夜温差对茶树生长及茶叶品质的影响[J].中国茶叶,2023,45(12):54-58,64,6.
