论文部分内容阅读
从菜田中硝态氮的动态变化、土壤氮素的矿化、硝态氮对地下水的影响等几方面概述了近年来国内外的研究进展,介绍了渗漏测定计法、土壤溶液提取器和15N同位素示踪技术等3种测定土壤氮素淋失的研究方法其应用前景;论述了影响菜田土壤氮素淋失的主要因素和降低菜田土壤氮素淋失的主要调控措施;提出了今后菜田土壤氮素淋失应加强的研究方向。
This paper summarized the research progress in recent years at home and abroad from the aspects of the dynamic changes of nitrate nitrogen in vegetable fields, the mineralization of soil nitrogen and the influence of nitrate nitrogen on groundwater. The methods of leakage measurement, soil solution extractor and 15N isotope tracing techniques and other three kinds of methods to determine soil nitrogen leaching of its application prospects; discusses the main factors affecting vegetable leaching soil nitrate leaching and reducing soil nitrate leaching main regulatory measures; put forward Future leaching of soil nitrogen should be strengthened in the field of research.