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Good quality of tea is most probably produced in highland area, though the productivity is much affected by weather changes, namely cold-drought damage, frost damage etc. In respect of this, investigation was undertaken among 90 lots of tea producing families which located between 300 m and 650 m altitude, at Higashi Shirakawa Village, Gifu Prefecture. In nomal year the yield of tea of unit area was reckoned to show no difference upon elevation and prices fell in high elevated area. But in the year of frost injury, tea produced for market was delayed in sprouting, especially being marked in the low elevation. In the colddrought year, both productivity and prices were decreased in the high elevated area.<BR>In conclusion, the higher the elevation the tea production would be more delayed and prices of tea are also decreased, thus the climatic changes have great influence of disadvantage on the running of tea farming.
日本茶業技術協会の論文