文献类型： 外文期刊
作者：
Chen, Chang-Song
1
;
Zhong, Qiu-Sheng
1
;
Lin, Zheng-He
1
;
Yu, Wen-Quan
1
;
Wang, Ming-Kuang
1
;
Chen, Zhi-Hui
1
;
Yo
1
;
作者机构： 1.Fujian Acad Agr Sci, Tea Res Inst, Fuan 355000, Peoples R China
关键词： nitrogen efficiency;resource;screening;tea cultivar
期刊名称：JOURNAL OF PLANT NUTRITION （ 影响因子：1.707； 五年影响因子：1.645 ）
ISSN： 0190-4167
年卷期： 2017 年 40 卷 12 期
页码：
收录情况： SCI
摘要： In pursuit of highyield, blind application of a large number of nitrogen fertilizer in tea plantation has not only seriously affected the quality of tea, but also resulted in environmental degradation. This study aimed to screenvarieties of tea cultivars with nitrogen efficiency. Twenty five different tea cultivars were collected and transferred into pot planting experiments to study their changes of total nitrogen and nitrogen utilization efficiency under absence nitrogen supply [0mmol L-1 ammonium nitrate (NH4NO3)] and normal nitrogen (6mmol L-1NH4NO3). Comparison with normal nitrogen supply, the biomass, total uptake of nitrogenand nitrogen utilization efficiencyof most tea cultivars under nitrogen deficiency tended to decrease. The cluster analysis of relative indices (RI) of biomass, total nitrogen contents, and nitrogen utilization efficiencyindicates that the Fudingdahao (#3), Zimudan (#23), and Huangdan (#24) tea cultivars are not sensitive to nitrogen deficiency and it can greatly resist with low nitrogen supply.
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