Effects of application of fertilizer K on the quality of flue-cured tobacco in Sichuan Province Nitrogen uptake and allocation characteristics of flue-cured tobacco in Nanxiong tobacco-planting area of Guangdong Province. Assessment of Genetic Relationships between the Flue-cured Tobacco Varieties by RAPD and ISSR Markers Nicotine synthesis and nicotine-N source in flue-cured tobacco influenced by transplanting date and N fertilizer Nitrogen accumulation, distribution and use efficiency of flue-cured tobacco under different soil texture