文章摘要
杨树青,丁雪华,贾锦风,叶志刚.盐渍化土壤环境下微咸水利用模式探讨[J].水利学报,2011,42(4):
盐渍化土壤环境下微咸水利用模式探讨
Light-saline water use pattern in saline soil environment
  
DOI:
中文关键词: 盐渍化土壤  微咸水利用  模式
英文关键词: saline  soil  Light-Saline water use  pattern
基金项目:
作者单位
杨树青 内蒙古农业大学 水利与土木建筑工程学院内蒙古 呼和浩特 010018 
丁雪华 内蒙古农业大学 水利与土木建筑工程学院内蒙古 呼和浩特 010018 
贾锦风 内蒙古农业大学 水利与土木建筑工程学院内蒙古 呼和浩特 010018 
叶志刚 内蒙古农业大学 水利与土木建筑工程学院内蒙古 呼和浩特 010018 
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中文摘要:
      为探讨盐渍化土壤环境下微咸水的利用模式,在内蒙河套灌区的典型盐渍化试验区开展了微咸水灌溉试验,并针对盐渍化土壤的空间变异性,以试验实测数据及SWAP模型为基础构建了区域土壤水盐运移模型系统。田间试验结果表明,在盐渍化土壤上进行咸水灌溉,生育期土壤呈积盐状态,但其未对作物生长及产量构成较大威胁;基于区域土壤水盐运移模型系统进行了不同微咸水利用方案的数值试验,结果显示,生育期各方案都有所积盐,但经过秋浇灌溉后,土壤积盐大幅度减少,研究区整体处于脱盐状态,并得出盐渍化土壤条件下对区域土壤环境影响较小的生育期咸淡水轮灌优化方案,即1水90mm (淡水) 、2水75mm (淡水) 、3水115.5mm (3.84g/l微咸水)、4水115.5mm (3.84g/l微咸水) 的 “淡咸咸” 灌溉模式。
英文摘要:
      In order to investigate the optimal light-saline water use pattern in saline soil environment an inferior water (brackish water) irrigation experiment was carried out in the typical salinity test area of Inner Mongolia Hetao irrigation district. In view of the saline soil spatial variability,a regional soil water and salinity transport model has been constructed based on the measured data and SWAP model. Field test results show that,the irrigation using salty water in saline soil in the period of crop growth,the soil exhibits the state of accumulate salt,but it does not signifcantly affect the crops growth and yield. The numerical simulation results show that,based on the different light-saline water use plan of regional soil water and salt transport model system,various plans accumulate salt to some extent in growth period,but the salinity considerably reduced after autumn irrigation,and the whole research area is in the state of desalination. Finally,an optimal rotation irrigation plan of salt and fresh water has been obtained with the less impact to regional soil environment under the saline soil condition,i.e. the“fresh-salty-salty”irrigation pattern with 90mm (fresh water) for the first irrigation, 75mm (fresh water) for the second irrigation, 115.5mm(3.84g/l brackish water) for the third irrigation,115.5mm (3.84g/l brackish water) for the fourth irrigation.
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