微咸水矿化度对秸秆还田下土壤水盐运移分布影响  

Impact of Brackish Water Salinity on the Transport and Distribution of Soil Water and Salt Under the Condition of Straw-return

作　　者：闪佳黛 胡浩云[1] 谢宏磊 SHAN Jia-dai HU Hao-yun XIE Hong-lei(College of Water Conservancy and Hydropower, Hebei University of Engineering, Handan 056021, Hebei Province Chaersen Reservoir Management Bureau, Songliao Water Resources Commission, Xinganmeng 137400,Inner Mongolia, China)

机构地区：[1]河北工程大学水电学院,河北邯郸056021 [2]内蒙古兴安盟松辽水利委员会察尔森水库管理局,内蒙古兴安盟137400

出　　处：《节水灌溉》2016年第10期25-27,33,共4页Water Saving Irrigation

基　　金：河北省自然科学基金项目(E2016402169);水利部公益性行业专项经费项目(201201091)

摘　　要：为了研究微咸水与秸秆还田的综合利用效应,在室内进行一维垂直入渗试验,分析了秸秆还田下不同矿化度对土壤水盐运移分布的影响。结果表明,相同入渗时间下,累积入渗量以矿化度3g/L为分界点随矿化度的升高先增后减,湿润锋的变化规律相似;土壤含水率随矿化度的增加表现出先增后减的趋势,以3和5g/L时土壤保持较高含水率;电导率随矿化度的增加而增加,当矿化度大于3g/L时,微咸水对土柱的淋洗作用不大。In order to study the effect of the comprehensive utilization of brackish water and straw-return, soil water and salt trans port distribution under different salinity is analyzed through indoor one-dimensional vertical infiltration experiment. The results show that： with the increase of salinity, the cumulative infiltration will increase first and then decrease with 3 g/L salinity as a demarcation point, and the wetting front has the similar change rule; with the increase of salinity, soil water content shows a trend of first in- crease and then decrease, and maintain higher soil water content when salinity is 3 and 5 g/L; conductivity increases with the in- crease of salinity; when the salinity is greater than 3 g/L, the effect of desalination is not good for the soil column.

关 键 词：一维垂直入渗 秸秆还田 矿化度 水盐运移 

分 类 号：S273.4[农业科学—农业水土工程]