安徽砀山县表层土壤养分地球化学特征

Geochemical Characteristics of Surface Soil Nutrients in Dangshan County in Anhui Province

摘要:

为详细了解砀山县表层土壤养分地球化学特征和主要影响因素，选取N、P、K、B、Zn、Mo等六项元素作为主要研究对象来分析砀山县土壤养分情况。本文分析了表层土壤元素含量特征、土壤有效态、土壤养分地球化学综合等级，讨论了砀山县土壤类型、土地利用方式等因素对土壤养分的影响。结果表明：砀山县土壤中P元素含量丰富，K、B、Zn、Mo等元素含量中等，N元素含量相对缺乏；砀山县土壤养分地球化学综合等级以中等等级土壤（占比74.92%）为主，较丰富土壤占比20.57%，较缺乏和丰富土壤占比4.51%，没有缺乏土壤，砀山县土壤养分总体水平较好；土壤中N、P、K、B、Zn、Mo等元素的含量与分布主要受到土壤类型、土地利用方式叠加影响。本次研究工作可为砀山县土地利用规划，农业经济发展提供科学地质数据支撑。

Abstract:

In order to understand geochemical characteristics and main influencing factors of surface soil nutrient in Dangshan county, selecting N, P, K, B, Zn and Mo as main research objects, present condition of soil nutrient in Dangshan county has been analyzed. In this paper, characteristics of surface soil element contents, soil availability and comprehensive geochemical grade of soil nutrients have been analyzed, andthe influence of soil type and land use mode on soil nutrients in Dangshan county have been studied. It is showed that P element is abundant in Dangshan county, K, B, Zn and Mo are medium and N element is relatively lack. Comprehensive geochemical grade of soil nutrients in Dangshan county is mainly medium grade soil (accounting for 74.92%), with relatively rich soil accounting for 20.57%, relatively deficient and rich soil accounting for 4.51%, and no deficient soil.The overall nutrient level in Dangshan county is good. The content and distribution of N, P, K, B, Zn and Mo are mainly affected by the superposition of soil type and land use mode. This research work can provide scientific geological data support for land use planning and agricultural economic development in Dangshan county.