掺沙对盐渍化土壤水盐分布及其蒸发特性的影响  

Effects of sand mixing on soil water-salt distribution and soil evaporation characteristics for salinized soil

作　　者：孙池涛 邓亚鹏 孙玉霞[1] 毛伟兵[1] 米兆荣 张倩 张明明 SUN Chitao;DENG Yapeng;SUN Yuxia;MAO Weibing;MI Zhaorong;ZHANG Qian;ZHANG Mingming(College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Taian, Shandong 271000, China;School of Horticulture and Landscape Architecture,Henan Institute of Science and Technology, Xinxiang, Henan 453003, China)

机构地区：[1]山东农业大学水利土木工程学院,山东泰安271000 [2]河南科技学院园艺园林学院,河南新乡453003

出　　处：《排灌机械工程学报》2022年第3期287-293,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：山东省重点研发计划项目(2019JZZY010727);山东省自然科学基金资助项目(ZR2018BEE048,ZR2019PC008);农业农村部作物需水与调控重点实验室开放基金资助项目(FIRI202004-0201);国家自然科学基金资助项目(31700368,32001473)。

摘　　要：为了探明盐渍土水盐分布和土壤蒸发特性对掺沙的响应特征,以山东省滨州市无棣县“渤海粮仓”科技示范区土壤为研究对象,分析了不同掺沙量(沙-土质量比为0,10%,30%,50%和70%,分别以处理CK,T1,T2,T3和T4表示)对盐渍土水盐运移特征和土壤蒸发的影响.结果表明,0~5000 min,处理T1和T2表层0~1 cm土壤的平均质量含水率比CK分别高了50.0%和40.7%,T3和T4表层0~1 cm土壤的平均质量含水率比CK分别低了36.3%和18.7%,而处理T1,T2,T3和T4表层0~1 cm土壤的平均电导率比CK分别低了16.3%,30.2%,8.1%和22.4%.处理CK,T1,T2,T3和T4的0~5000 min的平均蒸发速率依次为1.52×10^(-3),2.08×10^(-3),1.49×10^(-3),2.03×10^(-3)和1.52×10^(-3) mm/min;5001~14000 min的平均蒸发速率分别为0.79×10^(-3),0.44×10^(-3),0.47×10^(-3),0.26×10^(-3)和0.35×10^(-3) mm/min.The soil of the″Bohai Granary″science and technology demonstration area in Wudi County,Binzhou City,Shandong Province was taken as the research object.The propose was to find the response characteristics of water-salt distribution and soil evaporation characteristics of saline soil to sand mixing.The effect of different amounts of sand mixed(sand-soil mass ratios were 0,10%,30%,50%and 70%,respectively,denoted by CK,T1,T2,T3,and T4)conditions on the water-salt transport characteristics and soil evaporation indexes were analyzed.The results show that the average soil water content of 0-1 cm layer during the 0-5000 min period for T1 and T2 is 50.0%and 40.7%higher than CK,while it is 36.3%and 18.7%lower than CK for T3 and T4,respectively;and the average electrical conductivity(EC)of 0-1 cm layer for T1,T2,T3 and T4 is 16.3%,30.2%,8.1%and 22.4%lower than that of CK,respectively.The average evaporation rate of CK,T1,T2,T3 and T4 treatment is 1.52×10^(-3),2.08×10^(-3),1.49×10^(-3),2.03×10^(-3)and 1.52×10^(-3)mm/min during the 0-5000 min period and 0.79×10^(-3),0.44×10^(-3),0.47×10^(-3),0.26×10^(-3)and 0.35×10^(-3)mm/min during the 5001-14000 min period,respectively.

关 键 词：盐渍土 水盐运移 掺沙 土壤蒸发 

分 类 号：S287[农业科学—农业水土工程]