摘要
目前太湖流域平原河网地区水稻田的灌溉以淹灌为主,该灌溉方式存在用水效率低、稻田排水量大、化肥流失多、面源污染重等缺点。为加强太湖流域农业用水管理,发展节水灌溉,改善农田生态环境,太湖流域管理局组织开展了平原河网地区实地水稻田节水试验,对稻田用水量、排水氮磷流失情况进行了监测和分析。结果表明,水稻田采用节水灌溉技术既可保证产量,又可在湿地以及生态沟道的协同运行下,有效降低稻田排水中的氮、磷营养物质含量。
At present, flood irrigation is mainly adopted in the plain river-network area of Taihu Lake Basin resulting in low water use efficiency, large water drainage and fertilizer loss, severe non - point pollution. In order to strengthen the management of agricultural water use, develop the water-saving irrigation, and improve the ecological environment of agricultural field, Taihu Lake Basin Authority carried out rice - field water - saving test in the plain river - network area to monitor and analyze the water use amount and N and P loss during the drainage process. The results show that water - saving irrigation for rice - field can not only guarantee the rice yield, but also reduce N and P in the drainage with the cooperation of wetland and ecological ditches.
出处
《人民长江》
北大核心
2013年第3期81-84,共4页
Yangtze River
基金
水利部公益性行业科研专项经费项目(200901039)
关键词
农业用水
节水减污
实地试验
太湖流域
agricultural water use
water - saving and pollution reduction
field test
Taihu Lake Basin
