吴珺华,刘嘉铭,王茂胜,敖炜超,林辉

• 1:南昌航空大学土木建筑学院

摘要(Abstract)：

将十八烷基伯胺与土壤按不同质量比混合,获得不同斥水度的人为斥水化土壤。采用滴水穿透时间法测定斥水土壤斥水度,并开展不同温度、土壤含水率、溶剂等作用下的土壤斥水度变化规律试验。结果表明:十八烷基伯胺使土壤产生斥水性属于表面物理作用,对土壤颗粒本身化学性质无影响;人为斥水化土壤中十八烷基伯胺含量越高,土壤斥水度越大。在0～105℃温度区间内,随着温度的升高,土壤斥水度变化规律为先增后减,温度为75℃时土壤斥水度达到峰值。从干燥至饱和状态区间内,土壤含水率越高,土壤斥水度变化规律为先增后减,当含水率达到一定值时,土壤斥水性急剧下降甚至消失。强酸性溶液(盐酸)会显著降低人为斥水化土壤的斥水性,甚至变为亲水性土壤,洁厕剂、洗洁精等生活洗涤剂可降低土壤斥水性,而乙醇和丙酮对人为斥水化土壤的性质影响不大。

关键词(KeyWords)： 斥水土壤;十八烷基伯胺;温度;含水率;溶质

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51869013);; 江西省自然科学基金项目(20181BAB216033);; 江西省教育厅科技项目(GJJ180530);; 南昌航空大学研究生创新基金项目(YC2020-094)

作者(Author): 吴珺华,刘嘉铭,王茂胜,敖炜超,林辉

DOI: 10.13928/j.cnki.wrahe.2021.01.019

参考文献(References)：

• [1] SCHREINER O,SHOREY E C.Chemical nature of soil organic matter [J].USDA Bur.Soils Bull.,1910,74:2- 48.
• [2] JARAMILLO D F,DEKKER L W,RITSEMA C J,et al.Occurrence of soil water repellency in arid and humid climates[J].Journal of Hydrology,2000,231-232:105- 111.
• [3] DOERR S H,THOMAS A D.The role of soil moisture in controlling water repellency:new evidence from forest soils in Portugal [J].Journal of Hydrology,2000,231-232:134- 147.
• [4] KOSTKA S J.Amelioration of water repellency in highly managed soils and the enhancement of turfgrass performance through the systematic application of surfactants[J].Journal of Hydrology,2000,231-232:359- 368.
• [5] 杨昊天,刘立超,高艳红,等.腾格里沙漠沙丘固定后土壤的斥水性特征研究[J].中国沙漠,2012,32(3):674- 682.YANG Haotian,LIU Lichao,GAO Yanhong,et al.Characteristics of soil water repellency in stabilized sand dunes in the tengger desert[J].Journal of Desert Research,2012,32(3):674- 682.
• [6] 孙棋棋,刘前进,于兴修,等.沂蒙山区桃园和玉米地棕壤斥水性空间分布及影响因素[J].陕西师范大学学报(自然科学版),2013,41(6):80- 87.SUN Qiqi,LIU Qianjin,YU Xingxiu,et al.Spatial distribution and influencing factors of brown soil water repellency between peach orchard and corn field in Yi Meng mountainous area[J].Journal of Shanxi Normal University (Natural Science Edition),2013,41(6):80- 87.
• [7] 郭成久,陈乐,肖波,等.黄土高原苔藓结皮斥水性及其对火烧时间的响应[J].沈阳农业大学学报,2016,47(2):212- 217.GUO Chengliu,CHEN Le,XIAO Bo,et al.Soil water repellency of moss-dominated biological soil crusts and their response to fire duration on the Loess Plateau of China[J].Journal of Shenyang Agricultural University,2016,47(2):212- 217.
• [8] 杨邦杰.土壤斥水性引起的土地退化、调查方法与改良措施研究[J].环境科学,1994(4):88- 90.YANG Bangjie.Study on land degradation ,investigation methods and improvement measures caused by soil water repellency[J].Environmental Science,1994(4):88- 90.
• [9] 陈俊英,刘畅,张林,等.斥水程度对脱水土壤水分特征曲线的影响[J].农业工程学报,2017,33(21):188- 193.CHEN Junying,LIU Chang,ZHANG Lin,et al.Impact of repellent levels on drainage soil water characteristic curve[J].Transactions of the Chinese Society of Agricultural Engineering,2017,33(21):188- 193.
• [10] 商艳玲.再生水灌溉对土壤水盐运移及斥水性的影响[D].杨凌:西北农林科技大学,2013.SHANG Yanling.Effect on water and salt transport and water repellency of soil under reclaimed water irrigation[D].Yangling:Northwest A&F University,2013.
• [11] DEBANO L F.Water repellency in soils:A historical overview[J].Journal of Hydrology,2000,231/232:4- 32.
• [12] 杨松,龚爱民,吴珺华,等.接触角对非饱和土中基质吸力的影响[J].岩土力学,2015,36(3):674- 678.YANG Song,GONG Aimin,WU Junhua,et al.Effect of contact angle on matric suction of unsaturated soil[J].Rock and Soil Mechanics,2015,36(3):674- 678.
• [13] 吴珺华,林辉,周晓宇,等.斥水剂作用下非饱和土壤抗剪强度测定及其变化规律[J].农业工程学报,2019,35(6):123- 129.WU Junhua,LIN Hui,ZHOU Xiaoyu,et al.Measurement of shear strength and its change in unsaturated soils modified by hydrophobic agent[J].Transactions of the Chinese Society of Agricultural Engineering,2019,35(6):123- 129.
• [14] LEHRESCH G A,SOJKA R E,KOEHN A C.Surfactant effects on soil aggregate tensile strength[J].Geoderma,2012,189-190(6):199- 206.
• [15] ROPER M M.The isolation and characterisation of bacteria with the potential to degrade waxes that cause water repellency in sandy soils[J].Australian Journal of soil research,2004,42(4):427- 434.
• [16] 杨松,吴珺华,董红艳,等.砂土和黏土的颗粒差异对土壤斥水性的影响[J].土壤学报,2016,53(2):421- 426.YANG Song,WU Junhua,DONG Hongyan,et al.Soil Water Repellency of Sands and Clay as Affected by Particle Size[J].Acta Pedologica Sinica,2016,53(2):421- 426.
• [17] FRANCO C M M,TATE M E,OADES J M.Studies on non-wetting sands:I.The role of intrinsic particulate organic matter in the development of water repellency in non-wetting sands[J].Australian Journal of Soil Research,1995,33(2):253- 263.
• [18] 杨松,龚爱民,吴珺华,等.接触角对非饱和土中基质吸力的影响[J].岩土力学,2015,36(3):674- 678.YANG Song,GONG Aimin,WU Junhua,et al.Effect of contact angle on matric suction of unsaturated soil[J].Rock and Soil Mechanics,2015,36(3):674- 678.
• [19] WATSON C L,LETEY J.Indices for characterizing soil water repellency based upon contact angle-surface tension relationships[J].Soil Science Society of America,1970,34(6):841- 844.
• [20] 王亦尘,李毅,肖珍珍.玛纳斯河流域土壤斥水性及其影响因素[J].应用生态学报,2016,27(12):3769- 3776.WANG Yichen,LI Yi,XIAO Zhenzhen.Water repellency and its influencing factors in Manas River Basin[J].Chinese Journal of Applied Ecology,2016,27(12):3769- 3776.