曲靖地区位于滇东北部,全区山恋起伏河谷交错,地形复杂,海拔高差较大,自然形成坝区、半山区、山区、高寒山区和河谷槽五种气候类型。烤烟多分布在海拔1500—2100米之间的坝区,山区和半山区。由于地形地势的影响,自然形成与坝区不同的耕作特点:一是山区和半山区山高坡陡,水利条件差,烤烟生产一般都是在无水灌溉的条件下进行,因而烤烟产量和品质受自然气候条件,特 Qujing is located in northeastern Yunnan. The mountains are full of ups and downs and valleys. The terrain is complex and the elevation difference is relatively large. Naturally, there are five types of climates: dam area, mid-mountain area, mountainous area, alpine mountainous area and river valley. Flue-cured tobacco and more distributed in the elevation of 1500-2100 meters between the dam area, mountain and Mid-levels. Due to the influence of topography and topography, different farming features are formed naturally from the dam area. One is the steep hillsides in mountainous and semi-mountainous areas with poor water conditions, and the production of flue-cured tobacco is generally carried out under anhydrous irrigation conditions. Therefore, the yield and quality of flue-cured tobacco Natural and climatic conditions, special