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对陕西烟区４８个代表性土壤及相应烟叶样品分析化验结果，陕西烟区土壤养分平均含量为：有机质１３．９ｇ／ｋｇ，全氮０．７５ｇ／ｋｇ，速效氮５５．１ｍｇ／ｋｇ，全磷１．４４ｇ／ｋｇ，速效磷６．９ｍｇ／ｋｇ，全钾２１．６ｇ／ｋｇ，速效钾１３６ｍｇ／ｋｇ，有效硼、锌、钼含量分别为０．２１４ｍｇ／ｋｇ、０．４９５ｍｇ／ｋｇ、０．１１７ｍｇ／ｋｇ，ｐＨ７．７８，含氯量１．６０ｍｇ／ｋｇ。种烟土壤主要为黄绵土、黄棕壤和黑垆土。相关分析表明，影响陕西烟叶质量的主要土壤因素是有机质含量偏低，ｐＨ偏高及硼、钼、锌等微量元素普遍缺乏。
According to the analysis results of 48 representative soils and tobacco samples in Shaanxi tobacco area, the average content of soil nutrients in Shaanxi tobacco area was: organic matter 13.9g / kg, total nitrogen 0.75g / kg, available nitrogen 55.1mg / kg Phosphorus 1.44g / kg, available phosphorus 6.9mg / kg, total potassium 21.6g / kg, available potassium 136mg / kg, available boron, zinc and molybdenum were 0.214mg / kg and 0.495mg / 0.117 mg / kg, pH 7.78, chlorine content 1.60 mg / kg. The main tobacco soil is loessial soil, yellow brown soil and black loam soil. Correlation analysis showed that the main soil factors affecting the quality of Shaanxi tobacco were low organic matter content, high pH value and generally lack of trace elements such as boron, molybdenum and zinc.