Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.pce.2008.06.049 |
The influence of conservation tillage methods on soil water regimes in semi-arid southern Zimbabwe | |
Mupangwa, W.1,2; Twomlow, S.1; Walker, S.2 | |
通讯作者 | Mupangwa, W. |
会议名称 | 8th WaterNet/Warfsa/GWP SA Symposium |
会议日期 | OCT 31-NOV 02, 2007 |
会议地点 | Lusaka, ZAMBIA |
英文摘要 | Planting basins and ripper tillage practices are major components of the recently introduced conservation agriculture package that is being extensively promoted for smallholder farming in Zimbabwe. Besides preparing land for crop planting, these two technologies also help in collecting and using rainwater more efficiently in semi-arid areas. The basin tillage is being targeted for households with limited or no access to draught animals while ripping is meant for smallholder farmers with some draught animal power. Trials were established at four farms in Gwanda and Insiza in southern Zimbabwe to determine soil water contributions and runoff water losses from Plots under four different tillage treatments. The tillage treatments were hand-dug planting basins, ripping, conventional spring and double ploughing using animal-drawn implements. The initial intention was to measure soil water changes and runoff losses from cropped plots under the four tillage practices. However, due to total crop failure, only soil water and runoff were measured from bare plots between December 2006 and April 2007. Runoff losses were highest under conventional ploughing. Planting basins retained most of the rainwater that fell during each rainfall event. The amount of rainfall received at each farm significantly influenced the volume of runoff water measured. Runoff water volume increased with increase in the amount of rainfall received at each farm. Soil water content was consistently higher under basin tillage than the other three tillage treatments. Significant differences in soil water content were observed across the farms according to soil types from sand to loamy sand. The basin tillage method gives a better control of water losses from the farmers' fields. The planting basin tillage method has a greater potential for providing soil water to crops than ripper, double and single conventional Ploughing practices. (c) 2008 Elsevier Ltd. All rights reserved. |
英文关键词 | double ploughing planting basins ripping soil water |
来源出版物 | PHYSICS AND CHEMISTRY OF THE EARTH |
ISSN | 1474-7065 |
EISSN | 1873-5193 |
出版年 | 2008 |
卷号 | 33 |
期号 | 8-13 |
页码 | 762-767 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | Zimbabwe;South Africa |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000259277200021 |
WOS关键词 | PRODUCTIVITY ; MANAGEMENT |
WOS类目 | Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources |
WOS研究方向 | Geology ; Meteorology & Atmospheric Sciences ; Water Resources |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/297293 |
作者单位 | 1.Int Crops Res Inst Semi Arid Trop, Maropos Res Stn, Bulawayo, Zimbabwe; 2.Univ Orange Free State, Dept Soil Crop & Climate Sci, Bloemfontein, South Africa |
推荐引用方式 GB/T 7714 | Mupangwa, W.,Twomlow, S.,Walker, S.. The influence of conservation tillage methods on soil water regimes in semi-arid southern Zimbabwe[C]:PERGAMON-ELSEVIER SCIENCE LTD,2008:762-767. |
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