Influence of soil bulk density on soil water infiltration characteristics in water vertical movement for red loams
ZENG Jian1, FEI Liangjun1, PEI Qingbao1,2
1.Institute of Water Resources Research, Xi′an University of Technology, Xi′an, Shaanxi 710048, China; 2.Jiangxi Engineering Research Center of Water Engineering Saftety and Resources Efficient Utilization, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China
Abstract：In order to analyze the effect of soil bulk density on soil water infiltration in red loam areas and to apply it to irrigation production, the Jiangxi red loam was taken as the study object. The experiment utilized the one-dimensional water vertical infiltration to simulate how soil bulk density influences the water in red loam. The results show that the wetting front and cumulative infiltration volume and infiltration rate at the same time decreased with soil bulk density increasing. Time had more significant effects on the wetting front migration and accumulative infiltration capacity than the bulk density, and the linear relationship between wetting frag and cumulative infiltration was established. Bulk density had great effect on infiltration in the initial time of infiltration, then the effect gradually weakened in the process of infiltration. Saturated hydraulic conductivity and soil bulk density showed a negative power function relationship. In Green-Ampt model and Philip model, the relative error of saturated hydraulic conductivity is less than 9.62% and the calculation accuracy of the two models is higher when the soil bulk density is more than 1.30 g/cm3. During the redistribution period, the water content at the same soil depth decreases with soil bulk density increasing. The soil water content decreases with the increase of redistribution at the soil depth of 0-50 cm, and the soil bulk density has a significant effect on water content(P<0.05), the soil bulk density has not a significant effect on water content at the soil depth of 50-70 cm. The results provide the theoretical support for crops irrigation in red loam areas.
曾健, 费良军, 裴青宝,. 土壤容重对红壤水分垂直入渗特性的影响[J]. 排灌机械工程学报, 2017, 35(12): 1081-1087.
ZENG Jian, FEI Liangjun, PEI Qingbao,. Influence of soil bulk density on soil water infiltration characteristics in water vertical movement for red loams. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(12): 1081-1087.
[1]李天杰,赵烨,张科利,等.土壤地理学[M].第3版.北京:高等教育出版社,2004:7.[2]RIENZI E A, MAGGI A E, SCROFFA M, et al. Autoregressive state spatial modeling of soil bulk density and organic Carbon in fields under different tillage system[J]. Soil & tillage research, 2016, 159(1): 56-66.[3]LI Xu, HE Nianpeng, YU Guirui. Methods of evaluating soil bulk density: Impact on estimating large scale soil organic Carbon storage[J]. Catena, 2016, 144(1): 94-101.[4]张俊,牛文全,张琳琳,等.初始含水率对微润灌溉线源入渗特征的影响[J].排灌机械工程学报,2014, 32(1):72-79. ZHANG Jun, NIU Wenquan, ZHANG Linlin, et al. Effects of soil initial water content on line-sourceinfiltration characteristic in moistube irrigation[J]. Journal of drainage and irrigation machinery engineering, 2014, 32(1): 72-79.(in Chinese)[5]BIRLE E, HEYER D, VOGT N. Influence of the initial water content and dry density on the soil—water retention curve and the shrinkage behavior of a compacted clay[J]. ACTA geotechnica, 2008, 3(3): 191-200.[6]陈永宝,胡顺军,罗毅,等.不同入渗水头条件下壤砂土的一维垂直入渗特性[J].干旱区地理,2014, 37(4):713-719. CHEN Yongbao, HU Shunjun, LUO Yi, et al. One-dimensional vertical infiltration characteristics ofloamy sand at different infiltration heads one-dimensional vertical infiltration characteristics ofloamy sand at different infiltration heads[J]. Arid land geography, 2014, 37(4): 713-719.(in Chinese)[7]WANG Jiajia, HUANG Yuanfang, LONG Huaiyu. Water and salt movement in different soil textures under various negative irrigating pressures[J]. Journal of integrative agriculture, 2016, 15(8): 1874-1882.[8]康金林,杨洁,刘窑军,等.初始含水率及容重影响下红壤水分入渗规律[J].水土保持学报,2016, 30(1):122-126. KANG Jinlin, YANG Jie, LIU Yaojun, et al. Impacts of soil initial water content and bulk density on infiltration law of red soil[J]. Journal of soil and water conservation, 2016, 30(1): 122-126.(in Chinese)[9]潘云,吕殿青.土壤容重对土壤水分入渗特性影响研究[J].灌溉排水学报,2009, 28(2):59-61,77. PAN Yun, LYU Dianqing. Inheritance of the drought resistance identification indicesin wheat varieties under water stress[J]. Journal of irrigation and drainage, 2009, 28(2): 59-61,77.(in Chinese)[10]吕殿青,邵明安,刘春平.容重对土壤饱和水分运动参数的影响[J].水土保持学报,2006, 20(3):154-157. LYU Dianqing, SHAO Ming′an, LIU Chunping. Effect of bulk density on soil saturated water movement para-meters[J]. Journal of soil and water conservation, 2006, 20(3): 154-157.(in Chinese)[11]李卓,吴普特,冯浩,等.容重对土壤水分入渗能力影响模拟试验[J].农业工程学报,2009, 25(6):40-45. LI Zhuo, WU Pute, FENG Hao, et al. Simulated experi-ment on effect of soil bulk density on soil infiltration capacity[J]. Transactions of the CSAE, 2009, 25(6): 40-45.(in Chinese)[12]裴青宝,赵新宇,张建丰,等.容重对红壤水平入渗特性的影响[J].水土保持学报,2014, 28(6):111-114. PEI Qingbao, ZHAO Xinyu, ZHANG Jianfeng, et al. Effects of density on horizontal infiltration characteristics of red loam soil[J]. Journal of soil and water conservation, 2014, 28(6): 111-114.(in Chinese)[13]傅斌,王玉宽,朱波,等.紫色土坡耕地降雨入渗试验研究[J].农业工程学报,2008, 24(7):39-43. FU Bin, WANG Yukuan, ZHU Bo, et al. Experimental study on rainfall infiltration in sloping farmland of purple soil[J]. Transactions of the CSAE, 2008, 24(7): 39-43.(in Chinese)[14]赵勇钢,赵世伟,曹丽花,等.半干旱典型草原区退耕地土壤结构特征及其对入渗的影响[J].农业工程学报,2008, 24(6):14-20. ZHAO Yonggang, ZHAO Shiwei, CAO Lihua, et al. Soil structural characteristics and its effect on infiltration on abandoned lands in semi-arid typical grassland areas[J]. Transactions of the CSAE, 2008, 24(6): 14-20.(in Chinese)[15]任长江,白丹,周文,等.土壤初始含盐量对水分入渗特性的影响[J].干旱区研究,2014, 31(2):222-225. REN Changjiang, BAI Dan, ZHOU Wen, et al. Effect of initial soil salt content on infiltration of soil water[J]. Arid zone research, 2014, 31(2): 222-225.(in Chinese)[16]GREENAL W H, AMPT G A. Studies on soil physics: part II —— the permeability of an ideal soil to air and water[J]. Journal of agricultural sciences, 1912, 5(5): 1-26.[17]PHILIP J R. The theory of infiltration:1.The infiltration equation and its solution[J]. Soil science, 1957, 83(5): 345-357.[18]LIANG Weili, KOSUGI K, MIZUYAMA T. Soil water redistribution processes around a tree on a hillslope: the effect of stemflow on the drying process[J]. Ecohydrol, 2015, 8(8): 1381-1395.[19]GUHR A, BORKEN W, SPOHN M, et al. Redistribution of soil water by a saprotrophic fungus enhances Carbon mineralization[J]. Proceedings of the national academy of sciences, 2015, 112(47): 11465-14647.
