Spatial and Temporal Distribution Characteristics and Variation Laws of Soil Salinity at Robinia Pseudoacacia Forest Land in Yellow River Delta Irrigation with Magnetized Water

Yan Tengfei; Liu Xiumei; Liu Heman; Wang Huatian; Hong Xuan; He Chuang; Wang Zhuangzhuang

doi:10.13961/j.cnki.stbctb.2019.05.019

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Spatial and Temporal Distribution Characteristics and Variation Laws of Soil Salinity at Robinia Pseudoacacia Forest Land in Yellow River Delta Irrigation with Magnetized Water

- Spatial and Temporal Distribution Characteristics and Variation Laws of Soil Salinity at Robinia Pseudoacacia Forest Land in Yellow River Delta Irrigation with Magnetized Water
- Bulletin of Soiland Water Conservation Vol. 39, Issue 5, Pages: 135-142(2019)
- 作者机构：
  
  1. 信阳农林学院,河南,信阳,464000
  2. 山东农业大学黄河下游森林培育国家林业局重点实验室,山东,泰安,271000
  3. 上海市环境学校,上海,200135
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2019.05.019
  CLC： S151;S156.4
- Published：2019
- 稿件说明：
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Yan Tengfei, Liu Xiumei, Liu Heman, et al. Spatial and Temporal Distribution Characteristics and Variation Laws of Soil Salinity at Robinia Pseudoacacia Forest Land in Yellow River Delta Irrigation with Magnetized Water[J]. Bulletin of Soiland Water Conservation, 2019, 39(5): 135-142.
DOI：

Yan Tengfei, Liu Xiumei, Liu Heman, et al. Spatial and Temporal Distribution Characteristics and Variation Laws of Soil Salinity at Robinia Pseudoacacia Forest Land in Yellow River Delta Irrigation with Magnetized Water[J]. Bulletin of Soiland Water Conservation, 2019, 39(5): 135-142. DOI： 10.13961/j.cnki.stbctb.2019.05.019.

摘要

[目的] 探明磁化水灌溉条件下土壤盐分含量时空分布特征及变化规律，为滨海盐碱地磁化水灌溉技术提供理论依据。[方法] 以黄河三角洲东营市河口区新营造刺槐人工林地为研究对象，分析了淡水灌溉（FW）、磁化淡水灌溉（MFW）、地下浅表层微咸水灌溉（GW）和磁化地下浅表层微咸水灌溉（MGW）4种措施下土壤盐分含量的时空分布特征及变化规律。[结果] 2种磁化处理灌溉方式均能降低滨海盐碱地土壤盐分含量；不同灌溉处理的土壤盐分含量均值皆表现出：GW > CK > FW > MGW > MFW，土壤盐分含量随土层深度增加而降低。[结论] ①磁化水灌溉能够降低土壤盐分表聚，尤其在春、秋季适时采用磁化水灌溉，能够抑制土壤返盐，在20-40 cm土层效果更明显一些。②通过磁化地下浅表层微咸水进行适度灌溉，可以为该地区节约用水资源，有效地促进盐碱地土壤脱盐。

Abstract

[Objective] The temporal and spatial distribution characteristics and variation of soil salinity irrigated with magnetized water was explored in order to provide a theoretical basis for the magnetized water irrigation technology of coastal saline-alkali soil.[Methods] The coastal saline-alkali land of a Robinia pseudoacacia plantation in Dongying City was used as the research site to analyze the spatiotemporal distribution and evolution of soil salinity under four measures of freshwater irrigation (FW)

magnetized freshwater irrigation (MFW)

subsurface shallow brackish water irrigation (GW)

and magnetized subsurface shallow brackish water irrigation (MGW).[Results] The two types of magnetized irrigation treatments (MFW and MGW) reduced the soil salinity in the coastal saline-alkali soil. The average salt content of the different irrigation treatments in the different soil layers followed the order:GW > CK(no irrigation) > FW > MGW > MFW and the soil salinity in the different soil layers decreased with an increase of soil depth.[Conclusion] ① Magnetization treatment significantly reduced the soil salt accumulation in the surface soil layer. Especially in the spring and autumn

the use of magnetized water irrigation can inhibit the return of salt to the soil

with the effect being more obvious in the 20-40 cm soil layer. ② Moderate irrigation by magnetizing subsurface shallow brackish water could save water resources for the region and effectively promote soil desalination in saline-alkali soils.

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