氮素水平对茶树重要农艺性状和化学成分含量的影响

Abstract

Abstract: In this study, the effects of nitrogen supply on the important agronomic traits and chemical components were analyzed in 4 tea varieties using Longjing 43 as control. The results showed that sufficient nitrogen application effectively increased the tea yields by changing some key agronomic traits, such as increasing the chlorophyll content in mature leaves, accelerating the germination and growth of new shoots and increasing the density of germination. Meanwhile, nitrogen application affected the metabolisms of main chemical components (theanine, caffeine and polyphenols) in tea plant, resulting in the improvement of tea quality. The Zhongming 22 and LY002 showed more sensitive responses to high nitrogen application. These results provide important backgrounds for breeding of tea cultivars with higher nitrogen use efficiency.

Key words: nitrogen level, tea plant (Camellia sinensis), agronomic trait, chemical components

CLC Number:

S571.1
S143

LI Hailin, WANG Liyuan, CHENG Hao, WEI Kang, RUAN Li, WU Liyun. The Effects of Nitrogen Supply on Agronomic Traits and Chemical Components of Tea Plant[J]. Journal of Tea Science, 2017, 37(4): 383-391.

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The Effects of Nitrogen Supply on Agronomic Traits and Chemical Components of Tea Plant

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