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[目的]为查清昭通市植烟土壤养分丰缺状况。[方法]采集昭通市8个产烟县区57个乡镇605个植烟耕层土壤,对Zn、Mn、Mo、Cl 4种微量元素进行化验分析。[结果]全市植烟土壤速效锌含量平均2.479 mg/kg,变异系数258.61%,变幅为0.35～91.75 mg/kg;速效锰含量平均24.444 mg/kg,变异系数76.78%,变幅为2.6～127.75 mg/kg;速效钼含量平均0.289 mg/kg,变异系数69.70%,变幅为痕量～1.30 mg/kg;土壤水溶性Cl-含量平均11.783 mg/kg,变异系数92.34%,变幅为痕量～97.29 mg/kg。经系统聚类分析,57个乡镇植烟土壤Zn、Mn、Mo、Cl微量元素类型可分为6类。[结论]该研究可为昭通烤烟生产的合理布局和平衡施肥措施的制定提供理论依据。
[Objective] To find out the condition of abundance and shortage of tobacco in Zhaotong city. [Method] The soil of 605 planted soils in 57 townships of 8 producing tobacco counties in Zhaotong was collected and the trace elements of Zn, Mn, Mo, Cl were tested. [Result] The average content of available zinc in smoothed tobacco was 2.479 mg / kg, the coefficient of variation was 258.61%, the amplitude was 0.35 ~ 91.75 mg / kg, the average content of available manganese was 24.444 mg / kg, the coefficient of variation was 76.78% 127.75 mg / kg; the available molybdenum content was 0.289 mg / kg, the coefficient of variation was 69.70%, and the change range was trace to 1.30 mg / kg; the content of soil water-soluble Cl- was 11.783 mg / kg, Trace ~ 97.29 mg / kg. According to the cluster analysis, the trace elements of Zn, Mn, Mo, Cl in 57 towns and villages can be divided into 6 types. [Conclusion] This research could provide a theoretical basis for the rational layout of tobacco production in Zhaotong and the formulation of balanced fertilization measures.