摘要
采用先进的“3S”信息技术,应用GIS先进的空间图层叠加分析功能对宁夏引黄灌区各级盐渍化耕地分布规律和灌区土壤盐渍化的演变规律调查的基础上,提出宁夏引黄灌区土壤盐渍化的治理对策是:进一步完善的灌排体系与防渗措施;对灌区干渠进行砌护防渗治理;加强排水,调控地下水位;平田整地减少灌溉量;耕作培肥,提高土壤肥力;农艺栽培措施的运用;实施动态监测,加强预测预报。
The distribution law of salinized farmland of various grades and evolution law of soil salinization in the Yellow River Irrigation Area of Ningxia were surveyed using advanced“3S”information technology and advanced overlay function of GIS The countermeasures for control of the soil salinization in the Yellow River Irrigation Area were put forward： further improvement of irrigation and drainage system and seepage control measures; control of seepage through lining of the main canals in the irrigation area ; strengthening drainage and regulating underground water ; leveling the farmland and reducing irrigation volume ; improving soft fertility through tillage and nourishment ; adopting agronomical and cultivation measures ; implementing dynamic monitor and strengthening forecast.
出处
《甘肃农业科技》
2005年第11期40-43,共4页
Gansu Agricultural Science and Technology
关键词
引黄灌区
土壤盐渍化
3S
分布规律
演变规律
防治对策
宁夏
Yellow River irrigation area
Soil salinization
3S
Distribution law
Evolution law
Countermeasures for control
Ningxia
