Arid
DOI10.1016/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
ISSN1474-7065
EISSN1873-5193
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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