新疆农业科学 ›› 2021, Vol. 58 ›› Issue (1): 151-158.DOI: 10.6048/j.issn.1001-4330.2021.01.018

• 植物保护·土壤肥料·贮藏保鲜加工·农业水土工程·微生物·农产品分析检测 • 上一篇    下一篇

北疆典型土壤纵向弥散系数试验

虎胆·吐马尔白1,2, 穆丽德尔·托伙加2, 朱珠2   

  1. 1.南京水利科学研究院水文水资源与水利工程重点实验室,南京 210029;
    2.新疆农业大学水利与土木工程学院,乌鲁木齐 830052
  • 收稿日期:2020-03-13 出版日期:2021-01-20 发布日期:2021-01-20
  • 作者简介:虎胆·吐马尔白(1960-),男,新疆博乐人,教授,博士,博士生导师,研究方向为土壤水盐运移及高效节水灌溉,(E-mail)2419439411@qq.com
  • 基金资助:
    南京水利科学研究院水文水资源与水利工程科学国家重点实验室“干旱绿洲连作滴灌棉田根系层盐分类累积效应与控盐模式研究”(2018nkms02);塔里木河流域管理局课题“新疆阿克苏河流域平原灌区核桃及红枣需水量研究”(TGJAKSJJG-2019KYXM0001)

Experimental Study on Longitudinal Dispersion Coefficient of Typical Soil in Northern Xinjiang

Hudan Tumaerbai1,2, Mulideer Tuohuojia2, ZHU Zhu2   

  1. 1. Key Laboratory of Water Science and Engineering, Ministry of Water Resources, Nanjing Hydraulic Research Institute, Nanjing 210029, China;
    2. College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2020-03-13 Online:2021-01-20 Published:2021-01-20
  • Correspondence author: Hudan Tumaerbay(1960-),male,native of Bole,Xinjiang,Professor,Doctor,Doctoral Supervisor,Research field:The Theory and Practice of Soil Water and Salt Migration and Efficient Water-saving Irrigation,(E-mail)2419439411@qq.com.
  • Supported by:
    The Project of Key Laboratory of Water Science and Engineering of Nanjing Hydraulic Research Institute "Study on the Positive Effect of Root Layer Salt Classification in Continuous Drip Irrigation Cotton Field in Arid Oasis" (2018nkms02); the Project of Tarim River Basin Authority "Study on Water Demand of Walnut and Jujube in Plain Irrigation Area of Aksu River Basin, Xinjiang" (TGJAKSJJG-2019KYXM0001)

摘要: 【目的】 研究不同土壤质地对土壤纵向弥散系数和弥散度的影响。【方法】 根据土壤物理学及水动力弥散理论,以新疆北疆较为常见的典型砂壤土、粉壤土、壤土为例,NaCI为示踪剂,采用室内一维土柱垂直入渗试验测定纵向弥散系数。【结果】 不同土壤质地,渗流速度越小弥散系数越小,渗流流速越大,达到土壤溶质浓度峰值的时间越短,且峰值浓度越大。砂壤土渗流速为0.020 cm/min,纵向弥散度为2.88 cm;粉壤土渗流速度为0.018 1 cm/min,纵向弥散度为3.85 cm;壤土渗流速度为0.011 cm/min最小,纵向弥散度为2.44 cm。【结论】 弥散系数和弥散度取决于土壤质地类型与渗流流速。

关键词: 典型土壤; 盐分运移; 纵向弥散系数

Abstract: 【Objective】 In order to explore the effect of different soil texture on soil longitudinal dispersion coefficient and dispersion degree.【Method】 According to the soil physics and hydrodynamic dispersion theory, typical sandy loam, silty loam and loam in northern xinjiang were taken as examples. NaCI was used as tracer and the longitudinal dispersion coefficient of one-dimensional vertical infiltration test was carried out in the laboratory.【Result】 Because of the coarse texture of sandy loam, soil compactness is not big, the liquid is easy to diffuse. The smaller the seepage velocity, the smaller the dispersion coefficient, and the larger the seepage velocity, the shorter the time to reach the peak of soil solute concentration, and the larger the peak concentration, and the smaller the vice versa. The seepage velocity of sandy loam was 0.020 cm/min, and the longitudinal dispersion degree was 2.88 cm. The silty loam was 0.018,1 cm/min and the longitudinal dispersion degree was 3.85 cm. The loam seepage velocity was the smallest at 0.011 cm/min, and the longitudinal dispersion degree was 2.44 cm.【Conclusion】 The results show that the dispersion coefficient depends on soil texture type and seepage velocity.

Key words: typical soil; soil salinity transport; longitudinal coefficient

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

出版单位:《新疆农业科学》编辑部
地址:乌鲁木齐市南昌路403号新疆农业科学院
邮编:830091
电话:0991-4502046
E-mail:xjnykx-h@xaas.ac.cn


版权所有 © 《新疆农业科学》编辑部
本系统由北京玛格泰克科技发展有限公司设计开发
总访问量: 今日访问: 在线人数:
网站
微信公众号
淘宝购买
微店购买