Abstract: By using the methods of trend coefficient and climatic trend rate,the average temperature,tobacco field period(the average temperature from May to September) and precipitation data from 19 stations(1978-2007) in Panxi was analyzed.The results showed that the average annual temperature and the average temperature in tobacco growth period increased significantly,while the precipitation changed little.The change of the average temperature at part of the stations was not in synchrony with the general warming in Panxi,which decline although it was not significant.Combined with the indexes of appropriate climate for planting tobacco in Panxi,it was obtained that the arising of temperature had little effect on the most suitable region for tobacco planting and had a positive impact on suitable region.The results could provide a reference to development plan of tobacco-planting in Panxi.

Key words: Climate change, Panxi tabacco, Impact