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[目的]研究潍坊烟区土壤pH与土壤养分的关系,为该地区烟区平衡施肥提供科学依据。[方法]对潍坊烟区592份土壤样本的pH及其与土壤有机质、速效磷、速效钾、碱解氮、交换性钙、交换性镁、水溶性硼含量的关系进行研究。[结果]潍坊烟区平均pH为6.52,变幅为4.32~7.67,总体适宜;pH处于适宜烤烟生长的5.50~6.50间的样本量占总样本的43.41%。pH与土壤有机质、速效钾、交换性钙、交换性镁以及水溶性硼含量呈极显著正相关,与土壤碱解氮含量呈极显著负相关;pH的变化,对土壤有机质影响最大,对交换性镁影响最小。[结论]pH为5.50~6.50时,潍坊烟区土壤有机质、速效磷、速效钾、水溶性硼可满足优质烤烟生产要求,碱解氮和交换性镁含量较高,交换性钙含量偏低。
[Objective] The research aimed to study the relationship between soil pH and soil nutrients in Weifang tobacco-growing areas and provide a scientific basis for balanced fertilization in the tobacco growing areas in this area. [Method] The relationship between pH value and soil organic matter, available phosphorus, available potassium, basic nitrogen, exchangeable calcium, exchangeable magnesium and water soluble boron in 592 soil samples of Weifang tobacco area was studied. [Result] The average pH of Weifang tobacco area was 6.52 and the amplitude range was 4.32-7.67, which was generally suitable. The sample whose pH was between 5.50 and 6.50 for flue-cured tobacco growth accounted for 43.41% of the total sample. There was a significant positive correlation between pH and soil organic matter, available potassium, exchangeable calcium, exchangeable magnesium and water-soluble boron, and negatively correlated with soil alkali-hydrolyzable nitrogen content. pH had the greatest effect on soil organic matter, Magnesium minimal impact. [Conclusion] The soil organic matter, available phosphorus, available potassium and soluble boron in Weifang tobacco area could meet the production requirements of high quality flue-cured tobacco at pH 5.50-6.50. The contents of alkaline hydrolysis nitrogen and exchangeable magnesium were higher while the exchangeable calcium content was lower.