Effects of Phosphorus Rate on the Content,Accumulation and Distribution of Nitrogen,Phosphorus and Potassium in Flue-cured Tobacco

Studies with different phosphorus rate on cinnamon soil in 2001-2002.Demonstrated that with the rate of phosphorus fertilizer increasing,the content of phosphorus and potassium in roots, stems and leaves increased while the content of nitrogen in roots and leaves decreased.The accumulation amounts of nitrogen, phosphorus and potassium in the roots, stems and leaves increased when phosphorus fertilizer increased.The content and accumulation of nitrogen,phosphorus and potassium in root stem leaf during different growth stages manifested same change trend.While phosphorus rate increased, the relative distribution of phosphorus in root increased but it doesn't influenced the absolute distribution of nitrogen, phosphorus and potassium in the root, stem and leaves.