某试区暗管排盐布局优化研究  

Optimizing the dark tube layout of the drainage salinity

作　　者：孙贵英 李若东[2] 管吕军 吴学琴[2] SUN Guiying LI Ruodong GUAN Lvjun WU Xueqin(Yulong Water Conservancy and Hydropower Project Bidding Technology Consultation Centerof Qinghai, Xining 810008, China School of Water Resources and ElectricPower, Qinghai University, Xining 810016 , China)

机构地区：[1]青海省禹龙水利水电工程招标技术咨询中心,青海西宁810008 [2]青海大学水利电力学院,青海西宁810600

出　　处：《青海大学学报（自然科学版）》2016年第5期45-51,共7页Journal of Qinghai University(Natural Science)

摘　　要：为了更好地研究灌溉—排水措施对次生盐碱地的治理技术,根据暗管埋深的不同,确定了A,B和C(空白对照)试验区,然后在每个试验区设置8,10和12 m的暗管间距,进行灌溉—排水洗盐试验,再依据试验区的实际农作物状况和经济效益进行暗管布局优化计算。结果表明:灌溉—排水洗盐措施能有效地降低土壤的含盐量,该试验区最优的暗管埋深为1.4 m,最优暗管间距为15.94 m,费用约为0.55元/m^2。这表明次生盐碱地的形成是由于地下排水排盐不畅通,地下水位上升之时会将盐分再次带入土壤层中。因此,有效的改善土壤含盐量应从排水着手。In order to study treatment technology of secondary saline soil by irrigation drainage measures, according to the different underground pipe depth, three test areas, i. e. A , B and C （check）were set. In each test area,8 ,1 0 and 12 m of pipe spacing were set to test irrigation and drainage salinity.The actual situation of crop test area and economic benefits were combined to optimize undergroundpipe layout. The results showed that irrigation leaching measures can effectively reduce thesoil salinity content, and the optimal test area of underground pipe buried depth is 1 .4 m with theoptimal pipe spacing 15. 94 m. The cost is about 0. 55 yuan / m2. This indicates that the formation ofsecondary saline land is due to the underground drainage salinity being not smooth. The water levelwill rise when the salinity once again goes into the soil layer. Therefore, effective improvementshould be started from drainage.

关 键 词：灌溉-排水 土壤的含盐量 暗管埋深 暗管间距 费用 

分 类 号：S156.4[农业科学—土壤学]