Journal of Resources and Ecology ›› 2012, Vol. 3 ›› Issue (2): 151-160.DOI: 10.5814/j.issn.1674-764x.2012.02.007

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Evaluation of Hydraulic Process and Performance of Border Irrigation with Different Regular Bottom Configurations

CHEN Bo1,2, OUYANG Zhu1, ZHANG Shaohui3   

  1. 1 Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China
  • Received:2012-03-30 Revised:2012-05-30 Online:2012-06-30 Published:2012-06-30
  • Supported by:

    the Knowledge Innovation Program, Chinese Academy of Sciences (No. KSCX2-EW-B-1 and KSCX1-YW-09-06).

Abstract: Field topography or microtopography plays an important role in achieving acceptable performance in border irrigation. Extension of conservation tillage across the North China Plain has resulted in change in field bottom configuration. This study defined regular bottom configuration for border irrigation, and introduced three regular bottom configurations: border-strip irrigation (BSI), border-furrow irrigation (BFI) and rill irrigation (RI). The effects of regular bottom configuration on the hydraulic process and irrigation performance were evaluated by field experiments and a WinSRFR3.1 model. Results suggest that the WinSRFR3.1 model was capable of the simulation of BFI and RI, and that the hydraulic process and irrigation performance were diverse among BSI, BFI, and RI. BSI had the highest infiltration rate while BFI had the lowest infiltration rate; BSI took the most time to complete the water advance while BFI took the least time. As a result, BSI showed the worst irrigation performance while BFI gave the best irrigation performance. Different field bottom configurations mainly accounted for differences. We conclude that regular field bottom configuration is an important factor for acceptable performance in border irrigation.

Key words: regular bottom configuration, border irrigation, hydraulic process, irrigation performance, simulation