关键词: 云南, 云南, 烤烟, 香气物质, 品质, 生态因素

Abstract: Abstract: Ming and Qing Dynasties, Huanghe and Huaihe River confluence, the East into the Yellow Sea, However, the Yellow River sediment gradually brought massive blockage of middle and lower reaches of the river bed, flood discharge can not respond quickly, Flood discharge can not swiftly, Diverted southward into the Huaihe River, a tributary of the Yangtze River. Huaihe River southward, not only give local people's lives and property caused heavy losses, but also a significant impact on surrounding environment, South of the Huaihe River to the Yangtze River Hongzehu Lake strait, lake expansion, river diversions, soil deterioration, and even exacerbated the region along the Yangtze River collapsed, triggering the whole environment surrounding the vibrant changes happen.