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Analysis of the Nutrients in Tobacco-growing Soil in Henan

LI Yan-yan et al(College of Agronomy,Henan Agricultural University,Zhengzhou,Henan 450002)  
435 soil samples from tobacco-growing areas in Henan were analyzed.The results indicated that the content of nutrient in soil showed a big variation in location.The average content was as follows: CEC 135.6 mmol/kg,pH 7.18,organic matter 13.03 g/kg,available N 59.45 mg/kg,available P 13.93 mg/kg,available K 142.94 mg/kg and soluble Cl 35.75 mg/kg.It was suggested to control N,increase P and K,and decrease Cl for balanced fertilization in Henan tobacco-growing areas were effective and also pH value should be adjusted.
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