山东乐陵河口地区土壤质量评价与地力提升技术研究

Soil Quality Evaluation and Technology Research On ImprovingLand Capability In Laoling Hekou Area in Shandong Province

摘要:

以全国土地污染防治项目取得地球化学资料为依据，分析研究乐陵河口地区土壤化学元素特征，结果表明：土壤中一级营养元素有机质、氮、磷相对缺乏，钾含量富足；二级营养元素氧化钙、氧化镁相对缺乏，硫含量富足；其他有益微量元素氧化铁、锰、钼和硼均相对缺乏，氯含量丰富，基本不缺。土壤地力提升的主要障碍因素是土壤盐渍化和土壤重金属污染。根据土壤综合肥力评价结果，结合基础调查成果，提出了通过科学施肥、土壤障碍消除和重金属污染修复等地力提升措施，增强土壤肥力，变中、低产田为中、高产田；兴利除害，抑制土壤重金属元素的活性，降低风险，为高效优质农业的规划与发展提供技术支撑。

Abstract:

Based on geochemical data obtained from the national project about the prevention and control of soil contamination, soil chemical elements in LaolingHekou area in Shandong province have been studied. It is showed that among the first level nutritive elements in soil, organic matter, nitrogen and phosphorus were relatively deficient, while potassium was rich. Meanwhile, in the second level nutritive elements, calcium oxide and magnesium oxide were relatively short and sulfur content was abundant. In other beneficial and trace nutritive elements, iron oxide, manganese, molybdenum and boron were deficient, while the content of chlorine was high and hardly lack. The main barriers for improving land productivity were soil salinization and soil heavy metal contamination. According to the values of soil integrated fertility index, combining with basic surveying results, some countermeasures are put forward to improve land productivity, such as scientific fertilization, elimination of soil obstacle, remediation of heavymetalcontaminated soil and other effective counermeasures. It will provide a good technological support for the planning and development of goodquality and highbenefit agriculture.