Integrated water management systems for sustainable use of agricultural lands and water

可持续利用农田和水的综合水管理系统

• 批准号: 105564-2011
• 负责人: SriRanjan, Ramanathan
• 金额: $ 1.38万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=545176
• 关键词: Integrated; water; management; systems; sustainable

The expansion of intensive agricultural production requires the use of adequate irrigation, drainage, and agricultural chemicals. The consequence of high fertilizer application is the increased potential to pollute the streams, rivers, and lakes via poor quality drainage return flows. Irrigated potato production is expanding in Southern Manitoba in areas where salinization from poor quality groundwater has been a major problem. Proper water management through well-designed irrigation and drainage systems can minimize the salinization problems. One of the strategies to mitigate salinization is to use excess irrigation water to wash the salts below the root zone and remove this excess water by a drainage system. If the drainage return flows are directed to engineered-wetlands, the pollutants could be removed by vegetation. This will allow the water to be re-used for irrigation during dry periods and thus eliminate the pollution of rivers and lakes.

扩大集约农业生产需要使用足够的灌溉、排水和农用化学品。高施肥量的后果是增加了通过质量不佳的排水回流污染小溪、河流和湖泊的潜力。在马尼托巴省南部，灌溉马铃薯的产量正在扩大，这些地区劣质地下水造成的盐碱化一直是一个主要问题。通过设计良好的灌溉和排水系统进行适当的水管理可以最大限度地减少盐碱化问题。缓解盐碱化的策略之一是使用多余的灌溉水来清洗根部以下的盐分，并通过排水系统清除这些多余的水。如果排水回流被引导到工程湿地，污染物可以被植被去除。这将允许在干旱时期将水重新用于灌溉，从而消除对河流和湖泊的污染。