Nutrients in soils of Nanyang Tobacco Growing Areas and Fertilizing Technology

The nutrients in 519 soil samples collected from tobacco growing areas in Nanyang were analyzed.The results showed that the pH values of 93.8% soil samples were among 5.8-8.0 and the average value was 7.23.The organic substance contents of 79.8% soil samples were among 1-1.5% while the average was 1.186%.The average contents of total N and rapidly available N were 0.082% and 57.7mg/kg respectively while the contents of rapidly available N of 76.3% soil samples were among 30～65mg/kg.The average contents of total P and rapidly available P were 0.046% and 13.06 mg/kg respectively.The average contents of total K and rapidly available K were 1.62% and 157.09mg/kg respectively.The contents of rapidly available K of 85% soil samples were above 100mg/kg.The suitable fertilizing technology in Nanyang tobacco growing areas was suggested based on the result.