摘要
干旱荒漠扬水灌区盐碱地形成的直接诱因是大面积的粗放灌溉和低降雨高蒸发的气象条件。在自然和人为因素的共同作用下,干旱扬水灌区封闭型水文地质单元的盐碱化土地面积呈逐年增加趋势,土壤次生盐碱化程度不断加深,严重制约着灌区可持续发展。通过分析甘肃景电灌区土地盐碱化的成因和机理,探索灌区盐碱地综合治理措施,提出采用农业、生物、化学及水利等综合技术措施的灌区盐碱地治理模式,为干旱扬水灌区水土资源的可持续开发利用提供了思路。
The direct causes of land salinization in arid areas of water-lifting irrigation include large-area extensive irrigation mode and meteorological conditions of low precipitation and high evaporation. The land suffering from salinization in closed hydrogeological units in arid land of water-lifting irrigation has shown an increasing tendency year by year under the joint function of natural and human factors. The degree of secondary land salinization has been intensified that has restricted sustainable development of irrigation districts. Measures for comprehensive treatment of saline and alkaline land are exploited through analysis of reasons and its formation in Jingdian Irrigation District of Gansu Province, including measures of agricultural, biological, chemistry and water technologies, which provide a solution for sustainable development of land and water resources in arid land of water-lifting irrigation.
出处
《中国水利》
2015年第10期9-11,共3页
China Water Resources
基金
国家自然科学基金资助项目(51279064
31360204)
河南省教育厅科技创新人才支持计划(14HASTIT047)
河南省教育厅科技创新团队支持计划(14IRTSTHN028)
华北水利水电大学研究生教育创新计划资助项目(YK2014-04)
关键词
干旱扬水灌区
盐碱化成因
盐碱地治理
综合措施
arid land of water-lifting irrigation
reasoning of land salinization
treatment of saline and alkalineland
comprehensive measures
