通过规范化的标准检测, 制备样品并获取样品的标准红外光谱, 分别得到了几种中国名茶的标准红外光谱图。为了更全面地了解这些茶叶的整体地域特征, 建立了红外光谱分析的平均偏离方法, 对光谱图进行了的直观分析, 而且还探讨了平均偏离大小与茶叶产地纬度的关系。研究表明, 产地纬度相近的茶叶, 平均偏离小; 产地纬度相差大的茶叶, 平均偏离大。因此茶区的海拔高度和纬度与茶叶的产地信息有着密切关系, 平均偏离有可能成为分析茶叶产地信息的强有力的方法。

By standards testing (the sample standardization and the measure standardization), the standard IR spectras of the china famous teas were obtained. In order to investigate the overall characteristics of tea producing area, a visual, simple method (average deviation) on the IR spectra to analyze the relation between the average deviation and the latitude of several typical standard teas is devised. The result shows that: the average deviation of the tea with similar latitude and altitude is very small; On the contrary, the average deviation is considerable. There are affinities between the altitude and latitude of the tea producing areas and the average deviation of their IR spectrum, the average deviation is possible to be a using method to analyze the information of the tea producing area.