排盐暗管布设参数对农田水盐时空变化的影响

纠赟; 衡通; 马英杰; 马亮; 吴淼

文章摘要

排盐暗管布设参数对农田水盐时空变化的影响

Influences of salt discharge pipe layout parameters on the temporal and spatial changes of farmland water and salt

Received:August 10, 2024

DOI：10.13254/j.jare.2024.0623

中文关键词: 排盐暗管，土壤水分，土壤盐分，暗管埋深，暗管间距，脱盐率

英文关键词: salt drainage pipe, soil moisture, soil salinity, buried depth of hidden pipe, tube spacing, desalinization rate

基金项目:国家重点研发计划项目（2021YFD1900804）;第三师红旗农场1000亩盐生植物改良利用盐碱地试验项目;新疆维吾尔自治区人才发展基金“天池英才”引进计划项目;中国博士后科学基金项目（2023M740980）;新疆维吾尔自治区重点研发计划项目子课题（2023B02024-1-1）;新疆维吾尔自治区重大科技专项（2022A02003-6）

Author Name	Affiliation	E-mail
JIU Yun	College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China Xinjiang Key Laboratory of Water Conservancy Engineering Safety and Water Disaster Prevention, Urumqi 830052, China
HENG Tong	College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China Xinjiang Key Laboratory of Water Conservancy Engineering Safety and Water Disaster Prevention, Urumqi 830052, China
MA Yingjie	College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China Xinjiang Key Laboratory of Water Conservancy Engineering Safety and Water Disaster Prevention, Urumqi 830052, China	xj-myj@163.com
MA Liang	College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China Xinjiang Key Laboratory of Water Conservancy Engineering Safety and Water Disaster Prevention, Urumqi 830052, China
WU Miao	College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China Xinjiang Key Laboratory of Water Conservancy Engineering Safety and Water Disaster Prevention, Urumqi 830052, China

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中文摘要:

为探究排盐暗管布设参数对农田水盐动态及脱盐效果的影响，本研究设置排盐暗管间距20（W1）、30（W2）、40 m（W3）3水平，埋深1.2（D1）、1.5 m（D2）2水平，共6个试验小区，明沟排水（CK）作为对照，通过对2023年冬、春灌两次灌溉各小区土壤剖面水盐连续监测，探讨排盐暗管不同布设参数下土壤剖面的水盐时空变化规律，分析冬春灌后暗管布设参数对土壤脱盐效果的影响。结果表明：经冬、春灌淋洗后，土壤含水率与土壤含盐量都呈现W1

英文摘要:

In order to explore the influence of the laying parameters of the salt drainage pipe on the water and salt dynamics and desalination effect of farmland, three levels of the spacing of the salt discharge pipe were set up at 20（W1）, 30 m（W2）and 40 m（W3）, and two levels with a buried depth of 1.2 m（D1）and 1.5 m（D2）, a total of 6 experimental plots, and the open ditch drainage（CK）was used as the control, and the water and salt of the soil profile of each plot irrigated twice in winter and spring in 2023 were continuously monitored. The temporal and spatial variation of water and salt in the soil profile under different laying parameters of the salt drainage pipe was studied, and the influence of the laying parameters of the dark pipe on the soil desalination effect after winter and spring irrigation was analyzed. The results showed that the soil moisture content and soil salinity showed a trend of W1 < W2 < W3 < CK and D2 < D1 < CK of the dark pipe after irrigation and leaching in winter and spring. The moisture content of each treatment soil profile gradually increased from top to bottom, and the salt content of soil profile gradually decreased from top to bottom. The average soil salt content decreased significantly during the irrigation period and increased during the non-irrigation period. The desalination rate of 0-60 cm soil in each dark tube treatment was between 36.52%-64.61%, and the W1D2 treatment was the highest, which was 36.03 percent points higher than that of CK. The salt content of the soil before and after the two leaching curves could be fitted by the salt leaching curve, and the larger the buried depth and the smaller the spacing of the dark tubes, the better the soil leaching effect. According to the salt leaching effect of the soil, the appropriate spacing of the dark pipes in the study area is 20 m and the buried depth is 1.5 m, which can provide a theoretical basis for the rational layout of the salt drainage pipes in the arid area.

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