再生水灌溉对农田土壤水流运动影响的研究进展

发布时间：2018-02-20 07:53

本文关键词： 土壤水灌溉再生水农田入渗率导水率　出处：《农业工程学报》2016年S2期 　论文类型：期刊论文

【摘要】：再生水灌溉农田既可节约宝贵的水资源、缓解农业用水紧缺,同时再生水中的多种营养元素和微量元素可促进作物生长、提高粮食产量。但再生水中的物质进入农田后将引起土壤孔隙结构、团聚体结构、黏粒分散特征和水土作用关系等一系列的变化,进而引起土壤入渗性能和导水性能的改变,增大环境污染风险。该文综述了再生水中的悬浮无机固体、大分子有机质、油脂、表面活性剂和盐分对农田土壤水流运动的影响及其作用机理,指出受灌农田土壤结构性质演化过程与驱动机制、受灌农田土壤与灌溉入渗水流之间的相互作用关系为该领域亟需开展的2个研究方向。文章对再生水农田灌溉制度制定、污染风险控制和生态环境保护均有参考价值。
[Abstract]:Irrigating farmland with recycled water can not only save valuable water resources and alleviate the shortage of water for agriculture, but also promote crop growth with a variety of nutrients and trace elements in recycled water. However, soil pore structure, aggregate structure, clay dispersion characteristics and the relationship between soil and water will be changed, which will result in the change of soil permeability and water conductivity. In this paper, the effects of suspended inorganic solids, macromolecular organic matter, oils, surfactants and salts on soil water flow movement in reclaimed water were reviewed. It is pointed out that the evolution process and driving mechanism of soil structure and properties in irrigated farmland, and the interaction between irrigated farmland soil and irrigated infiltration water flow are two important research directions in this field. The irrigation system of reclaimed water farmland is formulated in this paper. Pollution risk control and ecological environment protection have reference value.
【作者单位】：长沙理工大学水利工程学院;水沙科学与水灾害防治湖南省重点实验室;
【基金】：国家自然科学基金(51579020,51109017) 湖南省自然科学基金(13JJ3069)
【分类号】：S152.7

【相似文献】