包气带土层对氮素污染地下水的防护能力综述与展望

Prospect of Capability of Aeration Zone in Soil in Prevention Nitrogen from Pollution of Groundwater

在讨论分析包气带土层防护农田氮素污染地下水的作用机制和影响因素的基础上,综述和剖析国内、外在该领域的研究现状及取得的进展和存在的问题,提出了一系列值得重视的关键层面问题。依托沿着这些方向进行的研究探索,有望集成推出解析包气带土层防护农田氮素污染地下水能力的方法,从而为开展农田施肥引起的地下水污染防护调查,指导农业施肥与结构调整及预防地下水污染,提供便捷、定量评价方法。

In agriculture of north China,leaching nitrogen from soil can easily contaminate groundwater,resulting in pricking up water crisis.It has great sense on instructing ground freighting and treating pollution,agricultural fertilization and structure adjusting,preventing groundwater from pollution,studying and enriching soluble nitrogen′s travel and transform in the aeration zone soil and intension characteristic of microbe function.Based on analysis of the theory that soil layers of farmland unsaturated zone can block the nitrogen′s transformation and the affecting factors and introduction of the study status and evolvement in this area,this article analyzes the existed problems and the severe key problems should be solved immediately.At last,this paper brings forward the corresponding resoluble method and thinks it is convenient,effective and practical and will have extensively using prospect.