中文摘要：

为了查明攀枝花烟区土壤酸碱及钙、镁变化趋势,对该烟区170份耕层土壤样品进行了检测,结合2009~2010年土壤相关数据结果进行分析。结果表明,与5年前相比,攀枝花烟区土壤pH提高9.8%,其中仁和、米易、盐边分别提高10.9%、1.6%和6.7%。全市土壤交换性钙提高310.8%,年均提高62.5%,仁和、米易、盐边分别提高398.9%、227.3%、425.6%。全市土壤交换性镁提高229.9%,年均提高46.0%,仁和、米易、盐边分别提高216.0%、204.8%、412.8%。

英文摘要：

In order to find out the variation analysis of soil pH and exchangeable calcium, magnesium in Panzhihua tobacco-growing area, a 170 top layer of soil samples were tested, and combination with the result of soil relevant data in 2009~2010 were analyzed. The results showed that the soil pH increased by 9.8% compared with five years ago, of which the Yanbian, Miyi and Renhe were increased by 10.9%, 1.6% and 6.7%, respectively. The soil exchangeable calcium increased by 310.8%, with an average annual increase 62.5% in Panzhihua tobacco-growing area, of which the Yanbian, Miyi and Renhe were increased by 398.9%, 227.3% and 425.6%, respectively. The soil exchangeable magnesium increased by 229.9%in Panzhihua tobacco-growing area, of which the Yanbian, Miyi and Renhe were increased by 216.0%, 204.8% and 412.8%, respectively.