| 钟方德,肖鸿,肖晓,郄汝兵,何锡花.贵州省镇宁县耕地土壤地球化学背景值研究[J].贵州地质,2020,37(4):471-482 |
| 贵州省镇宁县耕地土壤地球化学背景值研究 |
| Study on Soil Geochemical Background Value of Cultivated Soil of Zhenning County，Guizhou |
| 投稿时间：2020-04-22 |
| DOI： |
| 中文关键词: 镇宁县 成土母质 土壤类型 耕地土壤 地球化学背景值 |
| 英文关键词:Zhenning county Soil parent material Soil type Cultivated soil Geochemical background value |
| 基金项目: |
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| 摘要点击次数: 385 |
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| 中文摘要: |
| 采用正态法和对数正态法，对研究区4620件耕地表层土壤样品进行分析，首次获得了耕地土壤养分、环境等23项指标的地球化学特征及背景值。研究区地球化学特征及背景值受酸碱度、成土母质、气候、环境、土壤类型、耕作轮次、施肥强度等影响，导致元素含量在空间上分布不均，碳酸盐岩类母质成因的耕地土壤环境元素含量普遍高于碎屑岩类母质成因耕地土壤。通过对其背景值研究，为土壤质量评价，耕地资源保护(治理)、定量研究特色农业等提供依据。研究区内有益元素Se、Ge背景值较高，表明耕地土壤中Se、Ge元素含量范围较高，富Se、富Ge耕地资源丰富。对比其背景值，发现多数元素土壤背景值高于中国、美国大陆、日本及英国等土壤背景值；其背景值与贵阳市表层土壤和贵阳市城市土壤相比，背景值有所变化，但变化不大。 |
| 英文摘要: |
| In this paper, the normal method and lognormal method were used to analysis the surface soil samples of 4 620 cultivated land in the research area, and the geochemical characteristics and background values of 23 indicators such as cultivated land soil nutrients and environment were obtained for the first time. The geochemical characteristics and background values of the study area are affected by ph, parent material, climate, environment, soil type, rotation of cultivation, fertilization intensity, etc., resulting in uneven distribution of element content in space. The content of environmental elements in the cultivated land of carbonate rock parent material is generally higher than the cultivated land of clastic rock parent material. studying the background value of the research area, it provide the basis for soil quality evaluation, protection of cultivated land resource , and quantitative research on characteristic agriculture.The higher background values of beneficial elements Se(Selenium) and Ge(Germanium) in the study area indicate that the contents of Se and Ge elements in cultivated soil are higher, the cultivated land resources of rich Se and rich Ge are adequate. It found that the soil background values of most elements are higher than those of China, continental United States, Japan and Britain. Compared with the surface soil of Guiyang and the urban soil of Guiyang, the background value changed slightly. |
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