拌沙改良年限对盐渍土盐分特征的影响  

Effect of Sediment Improvement Years on Salinity Characteristics of Saline Soil

作　　者：孙婴婴 魏样 SUN Yingying;WEI Yang(Institute of Land Engineering and Technology,Shaanxi Provincial Land Engineering Construction Group Co.,Ltd.,Xi'an Shaanxi 710075;Shaanxi Provincial Land Engineering Construction Group Co.,Ltd.,Xi'an Shaanxi 710075;Key Laboratory of Degraded and Unused Land Consolidation Engineering,the Ministry of Natural Resources,Xi'an Shaanxi 710075;Shaanxi Provincial Land Consolidation Engineering Technology Research Center,Xi'an Shaanxi 710075)

机构地区：[1]陕西地建土地工程技术研究院有限责任公司,陕西西安710075 [2]陕西省土地工程建设集团有限责任公司,陕西西安710075 [3]自然资源部退化及未利用土地整治工程重点实验室,陕西西安710075 [4]陕西省土地整治工程技术研究中心,陕西西安710075

出　　处：《河南科技》2020年第29期149-151,共3页Henan Science and Technology

摘　　要：为分析拌沙对盐渍土改良的时间效应,本文以陕北定边的盐渍土为研究对象,通过不同拌沙比例对其进行改良,监测和分析改良1年和5年后表层盐渍土的pH、电导率、全盐量等盐分特征。结果发现,盐渍土的pH并没有随着拌沙量或改良年限的改变而呈现规律性的变化;盐渍土的电导率随着拌沙量的增加呈现上升趋势,且改良5年后比改良1年时略有上升,但是幅度较小;拌沙对于盐渍土全盐量的降低作用显著,改良5年后,全盐量更是显著低于改良1年,但是不同拌沙处理之间的改良效果差异还有待探明。In order to analyze the time effect of sand mixing on the improvement of saline soil,this paper took the sa⁃line soil in Dingbian,northern Shaanxi as the research object,and improved it through different sand mixing ratios,monitored and analyzed the salt characteristics of surface saline soil such as pH,conductivity and total salt content af⁃ter 1 year and 5 year improvement.It is found that the pH of saline soil do not show regular changes with the change of sand mixing amount or improvement years;the electrical conductivity of saline soil shows an upward trend with the increase of the amount of sand mixed,and after 5 years of improvement,the conductivity is slightly higher than that of 1 year,but the magnitude is smaller;sand mixing has a significant effect on reducing the total salt content of saline soil,after 5 years of improvement,the total salt content is significantly lower than 1 year after improvement,however,the difference in the improvement effect between different sand mixing treatments remains to be explored.

关 键 词：拌沙改良 盐渍土 改良年限 土壤全盐量 

分 类 号：S156.41[农业科学—土壤学]