| 微咸水矿化度对秸秆还田下土壤水盐运移分布影响 |
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| 引用本文： | 闪佳黛,胡浩云,谢宏磊.微咸水矿化度对秸秆还田下土壤水盐运移分布影响[J].节水灌溉,2016(10). |
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| 作者姓名： | 闪佳黛 胡浩云 谢宏磊 |
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| 作者单位： | 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 |
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| 基金项目： | 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)。 |
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| 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。
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| 关 键 词： | 一维垂直入渗 秸秆还田 矿化度 水盐运移 |
Impact of Brackish Water Salinity on the Transport and Distribution of Soil Water and Salt Under the Condition of Straw-return |
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| Abstract: | 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 . |
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| Keywords: | one dimensional vertical infiltration straw-return salinity water and salt transport |
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