The pH values of 750 soil samples in Panzhihua tobacco area were collected, and their relationship with soil available nutrients were analyzed. The results showed that Panzhihua tobacco soil pH was overall suitable for tobacco-planting land with an average of pH 6.1 ±0.6, and the variation coefficient was 9.27 % o pH in the most suitable soil samples of flue-cured tobacco growth was between 5.5 -6.5 accounting for 63.33 % of the total sample. The soil pH of different tobacco regions was in order of Renhequ > Miyixian > Yanbianxian; the different soil types pH was in order of Lateri tic red soil > limestone soil > yellow brown soil, rice soil > red, purple soil, of which soil pH were significant correlations with soil organic matter, a large number of elements, trace elements, and a significantly negative correlation with available P and rapidly-available potassium, and a significantly positive correlation with organic matter, nitrogen alkali solution, but a significantly positive correlation with exchange of calcium, effective boron, water-soluble chloride, exchangeable magnesium, effective zinc.%采集并分析了攀枝花烟区750个土壤样本的pH,并分析了其与土壤有效养分的关系.结果表明:攀枝花烟区土壤pH总体适宜,平均为6.1±0.6,变异系数为9.27％；pH 5.5～6.5处于最适宜烤烟生长的土壤样本占总样本总数的63.33％；不同烟区土壤pH大小表现为:仁和区＞米易县＞盐边县；不同土壤类型pH大小表现为:赤红壤＞石灰岩土＞黄棕壤、水稻土＞红壤、紫色土.土壤pH与土壤有机质、大量元素、中微量元素均存在显著的相关性,其中与速效磷、速效钾存在显著的负相关,与有机质、碱解氮存在显著的正相关,但与交换性钙、有效硼、水溶性氯、交换性镁、有效锌呈显著的正相关.
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