| Cite this article: | 王凯,陶园,董勤各,等.贺兰山西麓典型盐渍土成因分析及分区治理探讨[J].灌溉排水学报,0,():-. |
| wangkai,taoyuan,dongqinge,et al.贺兰山西麓典型盐渍土成因分析及分区治理探讨[J].灌溉排水学报,0,():-. |
|
| |
|
|
| This article has been：Browse 15Times Download 0Times |
|
|
|
| DOI： |
|
| Cause analysis and zoning treatment of typical saline soil in the western foot of Helan Mountain |
|
wangkai1,2,3, taoyuan4, dongqinge5,3, liuyong6, zhangdequan6, miaoping7, mahongli7
|
|
1.College of Water Resources and Architectural Engineering, Northwest A &2.amp;3.F University;4.China Institute of Water Resources and Hydropower Research;5.College of Water and Soil Conservation Science and Engineering, Northwest A &6.Ordos Water Conservancy Development Center;7.Ordos River and Lake Protection Center
|
| Abstract: |
| 【Objective】To summarize the causes and control measures of saline soil in Alashan Left Banner in the western foot of Helan Mountain, and to sort out the typical saline soil zoning and efficient control mode in the western foot of Helan Mountain.【Method】Taking groundwater well irrigation and high-lift Yellow River irrigation as the breakthrough point, this paper summarizes the causes and control measures of soil salinization in Yaoba Oasis and Luanjingtan Yellow River Irrigation Area in the western foot of Helan Mountain from the aspects of natural factors and human factors, discusses the control measures, and refines the high-efficiency management mode.【Result】The strong evaporation and high salt content of soil parent material create prerequisites for the accumulation of soluble salt in regional soil, while unreasonable irrigation and planting structure in Yaoba Oasis and excessive exploitation of groundwater aggravate soil salinization. The early flood irrigation in the high-lift irrigation area of the twin well beach and the easy leakage of soil moisture promote the development of saline soil in the downstream irrigation area. At present, there is a lack of leaching conditions and field drainage under the condition of drip irrigation in the field, forming a new salinization risk. The following suggestions are put forward for the treatment of saline soil in this area : First, Yaoba Oasis should take “water saving on the ground and underground treatment” as the core, continue to develop water-saving irrigation technology, establish supporting water-saving irrigation system, adjust crop planting structure, groundwater replenishment project, underground high salt water drainage and other measures to achieve the balance of groundwater exploitation and replenishment and reduce groundwater salinity ; Second, the critical depth of groundwater in the irrigation area should be scientifically determined. According to the soil texture and crop planting structure, different salt leaching modes and irrigation systems should be adopted and formulated, and drainage measures should be improved to promote irrigation and drainage coordination.【Conclusion】On the basis of traditional saline-alkali land management, based on the regional characteristics of the driving mechanism of salinization in Yaoba Oasis and Luanjing Irrigation District, the regional characteristic management measures are put forward : the implementation of groundwater “Replenishing Sources - Controlling Salt Water” governance scheme for Yaoba Oasis ; the integrated management mode of “water-saving irrigation-precise salt washing-irrigation and drainage coordination” is proposed for the Yellow River irrigation area of the Luanjingtan. The improvement and utilization of saline soil in the western foot of Helan Mountain is a complex systematic project. It is necessary to break the traditional single farmland water conservancy idea, pay attention to the common and individual laws of salinization evolution process in Yaoba Oasis and Luanjingtan Irrigation Area, strengthen the mutual support between various treatment measures, and realize the comprehensive treatment of saline soil in the western foot of Helan Mountain. |
| Key words: Helan Mountain; groundwater; yellow irrigation; soil salinization; partition governance measures; cluster analysis |
|
|
|
|
|
|
