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[1]YANG Xiao-yuan,FAN Xing-ke,FENG Hao,et al.Study on Technical Parameters of Low Norm Border Irrigation[J].Research of Soil and Water Conservation,2009,16(02):227-230.

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Study on Technical Parameters of Low Norm Border Irrigation

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 02 Page number: 227-230 Column: Public date: 2009-04-20

Title:: Study on Technical Parameters of Low Norm Border Irrigation

Author(s):: YANG Xiao-yuan^1,2,3, FAN Xing-ke^1,2, FENG Hao^1,2, JIANG Shan^1,2,3, LIAO Kai^1,2,3; 1. Institute of Soil and Water Conservation, CAS ＆ MWR, Yangling, Shanxi, 712100, China;
2. Northwest A & F University, Yangling, Shanxi, 712100, China;
3. Graduate University of Chinese Academy of Sciences, Beijing, 100049, China

Keywords:: border irrigation; distribution uniformity; application efficiency; irrigation quota

CLC:: S274.1

DOI:: -

Abstract:: A goal of seeking a low border irrigation quota not causing deep percolation was based on limited water resources supplementary irrigation of farmland.Field experiments were conducted in a medium loam in Yangling district Shanxi province in the semiarid region to investigate the influences of border dimensions and irrigation variables on Application Efficiency(Ea) and Distribution Uniformity(DU).Study on the best combination of irrigation variables by the flow movement curve fitting of surface irrigation by measuring on soil moisture,the performance of water advance and recession.Results show that the border dimensions and irrigation inflow rate of unit width affected the Application Efficiency and Distribution Uniformity significantly.A low irrigation need the reasonable combination of border dimensions and irrigation variables.The optimization inflow rate of unit width,border wide and border length in field experiments at 1.5‰ border slope are in the rang of 3～6 L/(m·s),2～3 m and around 50 m could ensure high efficiency(Ea>80%),Distribution Uniformity(DU>80%) and low irrigation quota.

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