环渤海地区盐渍土养分及盐分离子分布特征

发布时间：2018-06-18 17:22

本文选题：盐渍化 + 黄骅市　；参考：《江苏农业科学》2016年01期

【摘要】：为摸清环渤海地区盐渍土地资源状况,掌握盐渍土土壤养分和盐分离子的分布特征,以河北省黄骅市为研究区,采集该地区土壤表层(0~20 cm)样品,进行室内分析处理,根据土壤养分及盐分离子的测定值,分析二者含量的数值特征,制作土壤养分及盐分离子空间分布图,研究二者的空间分布特征,最后用SPSS软件对二者进行相关性分析。结果表明:环渤海地区盐渍土壤碱解氮和有机质含量缺乏,呈现沿海低、内陆高的趋势;速效磷和速效钾含量丰富,呈现沿海高、内陆低的趋势。环渤海地区盐渍土壤中不含CO2-3或CO2-3含量极少,含量最丰富的为Cl-,其次为SO2-4。盐分离子含量呈现沿海高、内陆低的趋势,盐渍化土壤中的盐分主要以Na Cl的形式存在。盐分含量高是造成碱解氮和有机质含量缺乏、速效钾含量丰富的重要原因,总盐分与Ca2+、Mg2+、K+、Na+、Cl-、SO2-4均为显著正相关关系,与HCO-3为负相关关系。
[Abstract]:In order to find out the status of saline soil resources and to know the distribution characteristics of soil nutrients and salt ions in the area around Bohai Sea, the surface soil samples of Huanghua City, Hebei Province were collected for indoor analysis and treatment. According to the measured values of soil nutrients and salt ions, the numerical characteristics of their contents were analyzed, the spatial distribution maps of soil nutrients and salt ions were made, and the spatial distribution characteristics of them were studied. Finally, the correlation between them was analyzed by SPSS software. The results showed that the contents of alkali-hydrolyzed nitrogen and organic matter in saline soil around Bohai Sea were low in coastal area and high in inland area, and the contents of available phosphorus and available potassium were abundant in coastal area and low in inland area. In the saline soil around Bohai Sea, the content of CO2-3 or CO2-3 is very small, the most abundant is Cl-and the next is SO2-4. The salt ion content was high in coastal area and low in inland area. Salt in salinized soil mainly existed in the form of NaCl. The high salt content was the important reason for the deficiency of alkali-hydrolyzed nitrogen and organic matter, and the abundance of available potassium. The total salt content was significantly positively correlated with Ca ~ (2 +) mg _ (2), K ~ (2 +) (Na) Cl-so _ (2-4), and negatively correlated with HCO ~ (-3).
【作者单位】：河北农业大学资源与环境科学学院;天津创世生态景观建设股份有限公司;河北农业大学国土资源学院;
【基金】：国土资源部公益性行业科研专项(编号:201311060) 河北省科技支撑计划(编号:2014055616)
【分类号】：S156.4

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