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Evaluation and optimization of border irrigation in different irrigation seasons based on temporal variation of infiltration and roughness

机译：基于渗透和粗糙度的时间变化，不同灌溉季节边界灌溉的评价与优化

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摘要

Soil infiltration and Manning's roughness values are key parameters to determine the performance of surface irrigation. However, temporal variability in these parameters due to tillage practices, irrigation, and crop growth greatly hinders efforts to improve irrigation quality. The objective of this experiment was to evaluate effects of infiltration and surface roughness variation on irrigation water movement and irrigation performance indicators for border irrigation with three border lengths. Field experiments were conducted from 2013 to 2015 in a wheat (Triticum aestivum)-maize (Zea mays L.) rotation planting system at the Jinghui Canal Irrigation Area in Guanzhong Plain of northwest China. In this work, Manning's equation and a surface irrigation simulation model (WinSRFR) were used to estimate Manning's roughness values and Kostiakov soil infiltration parameters. We determined that both parameters reached moderate levels of variation for both deep and shallow tillage treatments. The impacts of temporal variation in soil infiltration and surface roughness on irrigation water movement and irrigation quality were then evaluated. Results showed that water advance times varied significantly while recession times varied much more, affecting irrigation water amounts at various distances along the length of the border. Irrigation performance indicators were significantly different over various irrigation seasons, especially for borders that were 235 m in length. Finally, considering these temporal variations during the two rotation cycles, combinations of inflow rate and cut-off ratio during different irrigation seasons were optimized, and high irrigation quality could be achieved for 80 m and 120 m borders, but not for 235 m borders. Water percolation amounts during the 2013-2014 and 2014-2015 growing periods were reduced by 55 mm and 107 mm for 235 m borders, 26 mm and 23 mm for 120 m borders, and 36 mm and 39 mm for 80 m borders, respectively. Therefore, utilizing optimal combinations of inflow rate and cut-off ratio and considering temporal variation in soil infiltration and Manning's roughness could maintain high water application efficiency and sustainable utilization of limited water resources.
机译：土壤渗透和曼宁的粗糙度值是确定表面灌溉性能的关键参数。然而，由于耕作实践，灌溉和作物增长，这些参数中的时间变异性极大地阻碍了提高灌溉质量的努力。该实验的目的是评估渗透和表面粗糙度变化对灌溉水运动和灌溉性能指标的影响与三个边界长度。在2013年至2015年，小麦（Triticum aestivum） - jinghui运河灌溉区域的小麦（Triticum aestivum）旋转种植系统进行了现场实验。在这项工作中，曼宁的方程和表面灌溉仿真模型（WinSRFR）用于估计曼宁的粗糙度值和Kostiakov土壤渗透参数。我们确定两个参数达到深度和浅耕作治疗的适度变化水平。然后评价灌溉水运动和灌溉质量对土壤渗透和表面粗糙度对土壤渗透和表面粗糙度的影响。结果表明，当衰退时间多得多时，水预先倍数显着变化，沿着边界长度的各种距离影响灌溉水量。灌溉性能指标在各种灌溉季节显着差异，特别是对于235米的长度的边界。最后，考虑到在两个旋转循环期间的这些时间变化，优化了不同灌溉季节期间的流入率和切断比的组合，并且可以实现高80米和120米的边界，但不适用于235米的边界。 2013 - 2014和2014-2015期间的水渗透量减少了55毫米和107mm，235米边界，26mm和23mm，分别为36 mm和39mm，持续80米边界。因此，利用流入率和截止比率的最佳组合，考虑土壤渗透和曼宁粗糙度的时间变化可以保持高水应用效率和有限水资源的可持续利用。

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  • 来源
    《Agricultural Water Management》 |2019年第2019期|共14页
  • 作者

    Xu Jiatun; Cai Huanjie; Saddique Qaisar; Wang Xiaoyun; Li Liang; Ma Chenguang; Lu Yajun;

  • 作者单位

    Northwest A&

    F Univ Minist Educ Key Lab Agr Soil &

    Water Engn Arid &

    Semiarid Are Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Minist Educ Key Lab Agr Soil &

    Water Engn Arid &

    Semiarid Are Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Minist Educ Key Lab Agr Soil &

    Water Engn Arid &

    Semiarid Are Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Minist Educ Key Lab Agr Soil &

    Water Engn Arid &

    Semiarid Are Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Minist Educ Key Lab Agr Soil &

    Water Engn Arid &

    Semiarid Are Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Minist Educ Key Lab Agr Soil &

    Water Engn Arid &

    Semiarid Are Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Minist Educ Key Lab Agr Soil &

    Water Engn Arid &

    Semiarid Are Yangling 712100 Shaanxi Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 农业工程;
  • 关键词

    Soil infiltration parameters; Manning's roughness; Temporal variation; Irrigation performance;

    机译：土壤渗透参数;曼宁的粗糙度;时间变化;灌溉性能;

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