Abstract: In this paper, the relationships between quality of cured tobacco and weather element is discussed and analysed, by using gradual regression analysis on the data of experiment of cured tobaeco and synchronism meteorological observation in Guizhou Plateau from 1981 to 1984 year. The result shows that the temperatttre in the ripening stage and the,continuous days above 20℃ in the whole period of field growth are the most important weather elements, and the clear quantitive relation exists in the weather element and the quality of cured tobacco.

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