[目的]为了研究红河烟区土壤主要养分含量状况及植烟土壤适宜性.[方法]采用GPS技术在红河烟区取土壤样品299个,测定土壤主要养分含量,采用ArcGIS 9.2软件、地统计学和土壤肥力指标法(soil fertility index,SFI)对植烟土壤养分状况和肥力适宜性进行分析.[结果]红河州植烟土壤大部分酸碱度在5.5～7.5,适宜烤烟种植;土壤有机质含量适中,分布呈山区高、坝区低的趋势;水解性氮在植烟县市分布不均,整体呈现四周高、中间低趋势,52.33％的植烟土壤含量丰富,49.5％的土壤有效磷偏低;土壤有效磷分布呈西北高、东南低的趋势,含量中等及以上占50.5％;土壤速效钾空间分布不规则,平均含量为197.24 mg/kg,整体处于中等水平;96.65％的土壤水溶性氯含量小于30 mg/kg.[结论]全州大部分植烟土壤养分适宜性等级属于Ⅰ、Ⅱ、Ⅲ级,分别占总植烟土壤29.81％、34.39％、23.04％,适宜性稍差的ⅣV级土壤占12.77％.%[Objective] The soil nutrients content and soil fertility suitability evaluation of Honghe tobacco-planting area was studied.[Method] Using GPS technique,299 samples were collected in Honghe tobacco-planting area,which were determined their nutrients contents.The soil nutrients and soil fertility suitability were analyzed by the methods of ArcGIS 9.2,graphing and soil fertility index (SFI).[Result] The soil pH value was 5.5-7.5,which was suitable for tobacco planting.Soil organic matter content was moderate,the distribution of soil organic matter showed a trend of high in the mountainous area and low in plain area.Hydrolytic nitrogen distribution in tobacco planting area was uneven,the surrounding area was higher and the middle region was lower,52.33 ％ planting tobacco soil was rich in hydrolytic nitrogen,49.5 ％ soil had lower available phosphorus.The distribution of soil available phosphorus was higher in the northwest,lower in the southeast,which content was moderate and above accounted for 50.5 ％.Soil available potassium spatial distribution was irregular,and which average content was 197.24 mg/kg and in medium level.96.65 ％ of soil water soluble chloride content was less than 30 mg/kg.[Conclusion] Most of the tobacco planting soil nutrient suitability belonged to Ⅰ,Ⅱ,Ⅲ grade,which was accounted for 29.81％,34.39 ％,23.04 ％ respectively,and the suitability of Ⅳ grade soil accounted for 12.77 ％.
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