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

LI Hailin; WANG Liyuan; CHENG Hao; WEI Kang; RUAN Li; WU Liyun

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Journal of Tea Science ›› 2017, Vol. 37 ›› Issue (4) : 383-391.

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

LI Hailin, WANG Liyuan^*, CHENG Hao, WEI Kang, RUAN Li, WU Liyun

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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

agronomic trait / chemical components / nitrogen level / tea plant (Camellia sinensis)

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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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