| Soil wetting patterns and water distribution as affected by irrigation for uncropped ridges and furrows | |
| Zhang Yong-Yong1,2,3; Zhao Xi-Ning3; Wu Pu-Te3 | |
| 刊名 | Pedosphere
 |
| 2015-06-01 | |
| 卷号 | 25期号:3页码:468-477 |
| 关键词 | Infiltration Ridge-furrow tillage Soil texture Soil water content Technical parameter equation Wetted soil volume |
| ISSN号 | 1002-0160 |
| 通讯作者 | Wu pu-te(gjzwpt@vip.sina.com) |
| 英文摘要 | The ridge-furrow tillage combined with furrow irrigation is being more widely applied and has been shown to be effective in the loess plateau of china. accurate characterization of water infiltration behavior under ridge-furrow irrigation could provide guidelines and criteria for future irrigation system design and operation. our objective was to investigate soil water behavior during ponding infiltration in a cross-sectional ridge-furrow configuration. soil water movement within three different soil textures was tested by tracking the spatial and temporal soil water content (swc) variations in a soil chamber. the two-dimensional transient flow initially transferred rapidly, but gradually decreased with elapsed infiltration time, approaching a stable flow after 90 mm. a technical parameter equation incorporating the philip equation was developed using the water balance method to accurately predict total applied water volume (tawv). the wetting patterns moved outward in an elliptical shape. the wetted lateral and downward distances fitted using equations accounted for capillary and gravitational driving forces in variably wetted soil media. increasing initial swc resulted in an increase in wetted soil volume, which can also be caused by decreasing bulk density in a homogeneous soil. higher water level produced greater wetted lateral distance and more irrigation uniformity. the wetted lateral distance was almost identical to the wetted depth in silty clay loam soil; hence ridge-furrow irrigation should be implemented in such finer-textured soils. the wetted soil volume differed markedly among different soil textures (hydraulic properties), demonstrating that these properties can largely determine soil water spreading patterns and distribution. |
| 收录类别 | SCI |
| WOS关键词 | LOESS PLATEAU ; NITROGEN DISTRIBUTION ; SOLUTE TRANSPORT ; USE EFFICIENCY ; INFILTRATION ; DYNAMICS ; CHINA ; FLOW |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000354831200014 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2554996 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wu Pu-Te |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Linze Inland River Basin Res Stn, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China 3.Northwest A&F Univ, Inst Water Saving Agr Arid Reg China, Yangling 712100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Yong-Yong,Zhao Xi-Ning,Wu Pu-Te. Soil wetting patterns and water distribution as affected by irrigation for uncropped ridges and furrows[J]. Pedosphere,2015,25(3):468-477. |
| APA | Zhang Yong-Yong,Zhao Xi-Ning,&Wu Pu-Te.(2015).Soil wetting patterns and water distribution as affected by irrigation for uncropped ridges and furrows.Pedosphere,25(3),468-477. |
| MLA | Zhang Yong-Yong,et al."Soil wetting patterns and water distribution as affected by irrigation for uncropped ridges and furrows".Pedosphere 25.3(2015):468-477. |
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