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Study on influence of field surface slope on irrigation efficiency in combination with different irrigation parameters

Published on Jan 1, 2011in Agricultural Research in the Arid Areas
Hao Wan-long1
Estimated H-index: 1
Abstract
As field surface slope is an important factor which influences irrigation efficiency in border irrigation,it is necessary to study its influence on irrigation capability in combination with irrigation quota,land leveling precision,land roughness and flux per width.Irrigation simulation in different irrigation factors by general technical level off border indicates: different irrigation quota,land leveling precision,land roughness and flux per width are corresponding to different optimum field surface slop,optimization slopes are 1.6‰,1.8‰ and 2.2‰ by reverse simulation when irrigation quota is 60mm,land leveling precision is 4.25 cm,land roughness is 0.12 and flux per width are respectively 4 L/(s·m),3 L/(s·m) and 2 L/(s·m).The study of water flux advance and regression process in different field surface slopes concludes that the curve of water flux advance and regression of process field surface slopes in 2.0‰ is more smooth than in 1.6‰ and 1.2‰,indicating that water flux advance in relatively larger field surface slope is stable and and is favorable for the improvement of irrigation quality in smaller flux per width.
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Published on Aug 1, 2015in Biosystems Engineering 2.98
Qingfeng Miao3
Estimated H-index: 3
(Inner Mongolia Agricultural University),
Haibin Shi3
Estimated H-index: 3
(Inner Mongolia Agricultural University)
+ 1 AuthorsLuis S. Pereira51
Estimated H-index: 51
(University of Lisbon)
Water-saving irrigation needs to be implemented in Hetao irrigation district to help satisfying the demand by other users in the Yellow River basin. Aiming at assessing the potential irrigation performance and water saving at farm level, a set of traditional basins and another of precision-levelled basins cropped with maize, wheat and sunflower and managed by farmers were evaluated. Data were collected to characterise the basin sizes, microtopography, inflow rates, advance and recession times, c...