不同土地利用方式对土壤养分状况的影响——以太原市为例

为了探明不同土地利用方式对土壤养分状况的影响，实现区域土地资源合理管理利用和可持续发展。笔者以太原市为例，系统分析了玉米地、麦地、马铃薯地、果园地、退耕还林地5种不同土地利用方式下的土壤养分状况。结果表明，不同土地利用方式对土壤有机质、全氮、有效磷、速效钾和有效铁、锰、铜和锌等微量元素有极显著影响；土壤养分中有效磷和速效钾的变异系数最大，全氮和有机质的变异系数最小；有机质、全氮、和微量元素的平均含量依次为：玉米地＞麦地＞果园＞退耕还林＞马铃薯地，有效磷和速效钾的平均含量高低依次为：玉米地＞麦地＞果园地＞马铃薯地＞退耕还林地。太原市土壤肥力总体偏低，由于受经济效益和农事活动的影响，不同土地利用方式下土壤养分差异显著。

Effects of Different Land Use Types on Soil Nutrients Conditions in Cultivated Land A Case Study of Taiyuan

In order to explore the effects of lands use types on soil nutrients and instruct agricultural production, protection and sustainable use of land resources, the impact of land use types on soil nutrient conditions was analyzed systematically in Taiyuan. The results showed that soil total nitrogen, organic matter, available P, available K and available Cu, Zn, Mn, Fe were significantly affected by land use types, and available phosphorus and available potassium had the biggest coefficients of variation. Howe...