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Study on South Fujian Oolong Tea's Characteristic Based on Producing Area Rare-Earth Oxides Information by the Two-step-cluster

KONG Jun-hao,YANG Xiu-fang,ZHANG Shi-kang,ZHAO Yu-xiang(Hangzhou Tea Research Institute,CHINA COOP,Hangzhou 310016,China)  
The rare earth oxides(REOs) of raw tea,fresh leaves and soil samples were tested and analyzed in this research,group characteristics of town subdivision were found by the two-step-cluster.The acquisition regions of raw tea samples have been divided into four characteristic groups by threshold value character of REOs,which were in sequence of low content area(code of origin 2,3),sub-low content area(1,8),sub-high content area(4,9) and high content area(5,6,7);the acquisition regions of fresh leaves have been divided into three characteristic groups,which were in sequence of low content area(2,4),medium content area(1,3,7,8,9,10) and high content area(2,4,5,6,7),however,three regions(2,4,7) exhibited an alienation trend;the acquisition regions of soil samples have been divided into four characteristic groups,which were in sequence of low content area(3,8),sub-low content area(2,5,7,9),sub-high content area(4) and high content area(1,6,10).Thus regionalization for towns has been realized by producing area REOs information accordingly,which could provide support and basis for construction of low-REOs Oolong tea garden base and REOs management and control in South Fujian producing areas.
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