中文摘要：

为了调节龙岩烟区植烟土壤酸度，提高土壤养分有效性，促进优质烤烟生长，于2010年12月至2011年1月共采集龙岩烟区具有代表性的植烟土壤366个，测定了土壤有效养分和pH值。采用传统统计学方法和地统计学方法，分析土壤pH值的海拔差异、县际差异、空间分布和pH值与土壤有效养分的相关性。结果表明：土壤pH值空间分布呈条带状并存在两个高值区和两个低值区。交换性钙、有效锌、有效硫、碱解氮在一定程度上决定了龙岩烟区土壤DH值，其他有效养分对其影响从高到低依次为：交换性镁〉速效钾〉有效硼〉速效磷〉水溶性氯〉有效铜。低海拔地区以及在长汀县的南部和上杭县的西北部需多施碱性肥料；长汀的南部和上杭的西北部需多施K肥；武平的中赤乡、十方镇、岩前镇交界和长汀的大同镇、新桥镇交界，需施少量Cl肥，土壤pH值大于6．5地区，应适量施用Cl肥。

英文摘要：

To adjust the acidity of tobacco-planting soil in Longyan tobacco areas, enhance the availability of soil nutrients and promote the growth of high quality flue-cured tobacco, 366 representative tobacco-planting soils were collected and the soil available nutrients and pH values were determined from December 2010 to January 2011. The traditional statistic method and geostatistic method were applied to the analysis of the correlation among the elevation difference, the county difference, the spatial distribution, and the relationship between soil pH values and available nutrients. The results show that the spatial distribution of soil pH was strip-shaped and there were two high value areas and two low value areas. To some extent, the pH values of Longyan tobacco areas were determined by exchangeable calcium, effective zinc, effective sulfur and alkaline hydrolysis nitrogen. The influencing order of other available nutrients from high to low was： exchangeable magnesium〉available K〉effec- tive boron〉available P〉water soluble chloride〉available copper. Alkaline fertilizer should be applied more in low altitudes and the south of Changting County as well as the northwest of Shanghang County; K fertilizer should be applied more in the south of Changting and the northeast of Shanghang; a small amount of Cl fertilizer should be applied in the boundary between Zhongchi, Shifang and Yanqian of Wuping County as well as the boundary between Datong and Xinqiao of Changting; Cl fertilizer should be applied appropriately where its soil pH value is more than 6.5.