干旱区生态环境知识资源中心(Arid): Effects of three in-field water harvesting technologies on soil water content and maize yields in a semi-arid region of Zimbabwe

Arid

DOI	10.1016/j.agwat.2019.02.023
	Effects of three in-field water harvesting technologies on soil water content and maize yields in a semi-arid region of Zimbabwe
	Nyagumbo, Isaiah 1; Nyamadzawo, George 2; Madembo, Connie 2
通讯作者	Nyamadzawo, George
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2019
卷号	216 页码:206-213
英文摘要	Climate change and recurring mid-season dry spells have resulted in perennial droughts and poor yields in most smallholder farming areas located in marginal arid to semi-arid lands (ASAL) of Zimbabwe where they are dependent on rainwater for agricultural crop production. One approach that can be used to adapt to changing climatic pattern is in-field water harvesting. This study evaluated the soil profile water content and maize yields of 3 infield water harvesting technologies namely infiltration pits (IF), fanya juus (FJ) and contour ridges with cross ties (CRCT) in comparison to standard contour ridges (SC). The three systems are currently the focus of extension recommendations for water conservation in semi-arid regions of the country. Soil water content was measured on a regular basis using gravimetric methods at locations upslope and down slope of each structure. The average volumetric water content was signifcantly different between treatments, and it varied with increasing distance from the water harvesting structures. The average profile soil moisture content, over the three seasons were 8.3, 8.2, 8.1 and 7.8% for CRCT, FJ, IF and SC repectively. CRCT, FJ and IF retained more water for a greater distance from the harvesting structures compared to the SC. Maize yields were significantly higher in the water harvesting technologies compared to SC. Maize yields were 1196, 1164, 1250 and 749 kg ha(-1) for CRCT, FJ, IF and SC respectively. There as a good correlation between water content and maize yields (R-2 = 0.80). It was concluded that improved water harvesting structures when compared to SC have the potential to increase maize yields in areas with water shortages, hence they can be a useful strategy for climate change adaptation.
英文关键词	Water conservation Dry land cropping Margional lands Droughts
类型	Article
语种	英语
国家	Zimbabwe
收录类别	SCI-E
WOS记录号	WOS:000461262400019
WOS关键词	RUNOFF
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214007
作者单位	1.CIMMYT, Southern Africa Reg Off, POB MP163, Harare, Zimbabwe; 2.Bindura Univ Sci Educ, Dept Environm Sci, Box 1020, Bindura, Zimbabwe
推荐引用方式 GB/T 7714	Nyagumbo, Isaiah,Nyamadzawo, George,Madembo, Connie. Effects of three in-field water harvesting technologies on soil water content and maize yields in a semi-arid region of Zimbabwe[J],2019,216:206-213.
APA	Nyagumbo, Isaiah,Nyamadzawo, George,&Madembo, Connie.(2019).Effects of three in-field water harvesting technologies on soil water content and maize yields in a semi-arid region of Zimbabwe.AGRICULTURAL WATER MANAGEMENT,216,206-213.
MLA	Nyagumbo, Isaiah,et al."Effects of three in-field water harvesting technologies on soil water content and maize yields in a semi-arid region of Zimbabwe".AGRICULTURAL WATER MANAGEMENT 216(2019):206-213.