再生水灌溉模式对潮土结构性质及导水性能的影响

胡廷飞; 王辉; 谭帅

doi:10.13870/j.cnki.stbcxb.2020.02.021

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再生水灌溉模式对潮土结构性质及导水性能的影响

更新时间：2025-03-12

- 再生水灌溉模式对潮土结构性质及导水性能的影响
- Effect of Reclaimed Water Irrigation Modes on the Structural Properties and Hydraulic Conductivity of Tidal Soil
- 水土保持学报 2020年34卷第2期页码：146-152
- 作者机构：
  
  湖南农业大学水利与土木工程学院,长沙,410128
- 作者简介：
  
  [ "胡廷飞(1995-),男,贵州盘州人,硕士研究生,主要从事非常规水利用与土壤斥水性研究。E-mail:2759704595@qq.com" ]
- 基金信息：
  
  国家自然科学基金项目（41471185）湖南省教育厅重点项目（15A084）湖南省重点研发计划项目（2016JC2032）
- DOI：10.13870/j.cnki.stbcxb.2020.02.021
  中图分类号： S155;S274
- 纸质出版：2020
- 稿件说明：
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胡廷飞, 王辉, 谭帅. 再生水灌溉模式对潮土结构性质及导水性能的影响[J]. 水土保持学报, 2020,34(2):146-152.

HU Tingfei, WANG Hui, TAN Shuai. Effect of Reclaimed Water Irrigation Modes on the Structural Properties and Hydraulic Conductivity of Tidal Soil[J]. 2020, 34(2): 146-152.
胡廷飞, 王辉, 谭帅. 再生水灌溉模式对潮土结构性质及导水性能的影响[J]. 水土保持学报, 2020,34(2):146-152. DOI： 10.13870/j.cnki.stbcxb.2020.02.021.

HU Tingfei, WANG Hui, TAN Shuai. Effect of Reclaimed Water Irrigation Modes on the Structural Properties and Hydraulic Conductivity of Tidal Soil[J]. 2020, 34(2): 146-152. DOI： 10.13870/j.cnki.stbcxb.2020.02.021.

摘要

为揭示再生水不同灌溉模式下土壤结构性质及导水性能的差异。通过室内模拟土柱入渗试验，以清水灌溉为对照（CK），研究了再生水持续灌溉（RW）、再生水—清水混合灌溉（RW-2）及再生水—清水交替灌溉（ARW）3种灌溉模式对土壤容重、总孔隙度、团聚体稳定性、入渗率及饱和导水率的影响。结果表明：相比CK，各处理容重呈降低趋势，总孔隙度增加，但差异均不显著；再生水灌溉促进潮土>1 mm粒级团聚体向<1 mm粒级团聚体转化，相比CK，各处理<1 mm粒级团聚体含量分别增长11.51%~31.22%；潮土团聚体水稳定性降低；各处理>0.25 mm粒级团聚体含量分别降低2.92%~9.75%，平均质量直径分别降低11.30%~38.38%，几何平均直径分别降低3.93%~12.78%，其中RW最为显著；相关性分析表明，>1 mm粒级水稳性团聚体含量对潮土结构稳定性贡献最大；再生水3种灌溉模式下潮土入渗率分别显著增长80.00%~260.00%；ARW处理潮土有效导水率上升22.68%，而RW和RW-2处理土壤有效导水率分别下降14.47%和42.36%。保持潮土结构性质方面以RW-2处理最好，改善潮土导水能力方面则以ARW处理最为显著。

Abstract

In order to reveal the effect of the reclaimed water irrigation modes on tidal soil structural properties and water conductivity

an indoor simulated soil column infiltration experiment with four treatments as:fresh water irrigation (CK)

reclaimed water irrigation (RW)

mixed irrigation of fresh water and reclaimed water (RW-2)

and alternative irrigation of fresh water and reclaimed water (ARW) was conducted to assess the effect of irrigation modes on soil bulk density

total porosity

aggregate stability

infiltration rate

and saturated hydraulic conductivity. The results showed that compared with CK

the bulk density of each treatment showed a decreasing trend and the total porosity increased

but the difference was not significant. Reclaimed water irrigation promoted the transformation of >1 mm aggregates to <1 mm aggregates in tidal soil. Compared with CK

the content of <1 mm aggregates in each treatment increased by 11.51%~31.22%

respectively. The water stability of tidal soil aggregates decreased

the content of >0.25 mm aggregates decreased by 2.92%~9.75%

the mean weight diameter decreased by 11.30%~38.38%

and the geometric mean diameter decreased 3.93%~12.78%

among which RW was the most significant. The correlation analysis showed that the higher the percentage of water-stable aggregates particle size bigger than 1 mm

the more stable of the soil structure. The soil water infiltration rate of tidal soil increased by 80.00%~260.00% under three irrigation modes of reclaimed water. The effective water conductivity of ARW increased by 22.68%

while RW and RW-2 reduced by 14.47% and 42.36%

respectively. The best capacity of improving the structural properties of tidal soil was RW-2

while ARW was the most significant treatment for improving hydraulic conductivity of tidal soil.

关键词

Keywords

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