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[目的]了解昭通市植烟土壤年际间变化情况,从而为昭通市烟叶生产平衡施肥提供理论依据。[方法]对昭通市自2011-2013年间主要的烤烟种植区域土壤养分变化状况进行调查分析。[结果]昭通市植烟土壤的p H值有增大的趋势;土壤中有机质和氮磷钾的含量均基本处于适宜范围,满足烤烟生长,各年际间含量无明显变化;植烟土壤中的氯离子含量逐年上升,2013年的增幅最大,但均值未超过烤烟生长所需氯离子的范围。[结论]昭通市植烟土壤总体上养分含量年际间无明显变化。
[Objective] To understand the interannual variation of tobacco-planting soil in Zhaotong City and to provide a theoretical basis for the balanced fertilization of tobacco in Zhaotong City. [Method] The investigation and analysis of the soil nutrient changes in the main tobacco growing areas in Zhaotong from 2011 to 2013 were conducted. [Result] The p H value of tobacco planting soil in Zhaotong City tended to increase. The contents of soil organic matter, nitrogen, phosphorus and potassium in the soil were basically in the appropriate range, which satisfied the growth of flue-cured tobacco with no significant change in the content of tobacco. Of the chloride ion content increased year by year, the largest increase in 2013, but the average value does not exceed the range of chloride ions needed for the growth of flue-cured tobacco. [Conclusion] There was no significant change in the total nutrient content of tobacco-growing soil in Zhaotong City during the year.