高垄滴灌条件下盐碱地土壤盐分再分布研究

发布时间：2018-05-08 07:58

本文选题：高垄 + 滴灌　；参考：《节水灌溉》2017年09期

【摘要】：针对引黄灌区水资源短缺和土壤盐渍化两大资源环境问题,以节水防盐为目标,通过田间试验,将能提高地温、增加土壤透气性的高垄与能提高水资源利用率和利用效率、将局部土壤盐分淡化的滴灌相结合,探究高垄滴灌条件下盐渍化土壤的水盐运动规律,结果表明,在中度盐碱化土地上,滴灌可以有效地减小高垄上的盐分,使盐分聚集在垄中央;在重度盐碱化土地上,滴灌可以有效降低垄的全盐量并将垄中盐分淋洗在垄沟中。归纳出适应性盐碱地利用技术和作物种植模式,为引黄灌区盐碱地改良利用提供技术支持。
[Abstract]:In view of the two problems of water resources shortage and soil salinization in Yellow River Irrigation area, water saving and salt control were taken as the goal, and field experiments were conducted to improve the soil temperature, increase the soil permeability, and improve the utilization ratio and utilization efficiency of water resources. By combining drip irrigation with desalination of local soil salt, the water and salt movement of salinized soil under the condition of high ridge drip irrigation was studied. The results showed that drip irrigation could effectively reduce the salt content on high ridge in moderate salinized soil. In heavy salinized land, drip irrigation can effectively reduce the total salt content of ridges and wash salt from ridges in furrows. The adaptive saline-alkali land utilization technology and crop planting pattern were summarized to provide technical support for the improvement and utilization of saline-alkali land in Yellow River Irrigation area.
【作者单位】：宁夏大学土木与水利工程学院;宁夏农林科学院农业资源与环境研究所;宁夏节水灌溉与水资源调控工程技术研究中心;旱区现代农业水资源高效利用教育部工程研究中心;
【基金】：国家科技支撑计划课题(2013BAC02B05) 国家自然科学基金项目(51169021,51569022) 宁夏大学研究生创新项目(GIP201634)
【分类号】：S156.4;S275.6

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