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Effects of late-autumn fertilizer dressing on accumulation of photosynthates in tea (Camellia sinensis) and its contribution to spring tea quality

Published online by Cambridge University Press:  27 March 2009

Y. Shen ,
X. Yang  and
X. Xie
Y. Shen
Affiliation:
Institute of Nuclear-Agricultural Sciences
X. Yang
Affiliation:
Department of Tea Science, Zhejiang Agricultural University, Hangzhou 310029, China
X. Xie
Affiliation:
Institute of Nuclear-Agricultural Sciences
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Summary

Two-year-old tea bushes were given NPK fertilizer on 12 November 1986 and 14CO2 on 22–23 December 1986 and 9–10 January 1987. Late-autumn fertilizer dressing stimulated photosynthate accumulation in the whole bush, especially in overwintering leaves and roots. Large amounts of photosynthates in overwintering leaves provide the nutrition required for early spring budding. Lateautumn dressing also accelerated the transport of photosynthates from leaves to roots in winter, where photosynthates, with absorbed nitrogen, synthesized more animo acids, especially theanine and phenylalanine. The re-use of photosynthates stored in the roots of the dressed bushes during shoot growth the following spring was also facilitated by late-autumn dressing. The contents of amino acids and caffeine in the shoots of dressed bushes were much higher than those in the control, whereas the content of polyphenol was lower than in the control. The results indicate that late-autumn dressing improves the quality of spring green tea.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 115 , Issue 2 , October 1990 , pp. 233 - 238
Copyright
Copyright © Cambridge University Press 1990

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References

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