Efficient water-saving and non-point source pollution prevention and control technology for agriculture in Hetao Irrigation District
In response to the problems of water resource shortage and severe agricultural non-point source pollution in Hetao Irrigation District,research on efficient water-saving and non-point source pollution prevention and control technologies for agriculture in irrigation district is carried out from different spatial scales and governance links.This research has developed a technology model for regulating and managing agricultural water,fertilizer,salt,and pesticides at the source of pollution(including research on herbicide residues and recommended dosage,response of soil water,nitrogen,salt,and crop growth to water and fertilizer management,reduced film autumn irrigation technology,and secondary salinization soil microbial im-provement technology),an oxygen rich ecological ditch pollution interception and purification technology model for agricul-tural drainage,and a regional scale spatial analysis and identification technology for non-point source pollution,integrated and constructed an efficient and water-saving agricultural non-point source pollution prevention and control technology sys-tem that runs through source control,process pollution reduction,regional pollution detection,and system pollution con-trol.Based on current research and new development concepts,this article proposes several understandings on the research of soil and water resources in Hetao Irrigation District,which provides important support for the high-quality development of Hetao Irrigation District and offers important reference for similar irrigation districts.
non-point source pollutionsource of pollutionwater-saving and waste reductiondrainage ditchcomprehen-sive prevention and control
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