豫北地区冬小麦滴灌灌水技术参数研究
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衣若晨(1998—),女,硕士研究生,主要从事节水灌溉理论与新技术研究。E-mail:yiruochen1@163.com

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S275.6

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国家现代农业产业技术体系建设专项基金项目(CARS-03);国家自然科学基金项目(51879267);山西省水利科学研究与推广项目(2022GM005)


Research on Drip Irrigation Technical Parameters of Winter Wheat in Northern Henan Province
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    摘要:

    为优化豫北地区冬小麦在滴灌条件下的灌水技术参数,通过田间试验系统研究了不同滴头流量(2.0,4.0,6.0 L/h)和滴灌带间距(40,60,80,100,120 cm)对灌溉水在土壤中分布、冬小麦产量以及水分利用效率的影响。结果表明:就灌水均匀度而言,缩小滴灌带间距和增加滴头流量可以提高灌溉水在冬小麦根区的分布均匀度;本试验条件下滴灌带铺设超过80 cm,会影响冬小麦产量及其构成,滴灌带间距相同时,冬小麦产量随着滴头流量的增加呈递增趋势。就水分利用效率而言,适宜的滴灌带间距及滴头流量组合能在同一灌水条件下,有效减小耗水量并提高水分利用效率;本试验条件下滴灌带间距60 cm、滴头流量2.0 L/h的参数组合的产量最高,达到10 626.45 kg/hm2,水分利用效率最高,达到2.42 kg/m3。综合分析灌溉水均匀度、冬小麦产量以及水分利用效率,滴灌带间距60 cm、滴头流量2.0 L/h,以及滴灌带间距80 cm、滴头流量6.0 L/h的参数组合是适宜的冬小麦滴灌灌水技术参数。

    Abstract:

    In order to optimize the drip irrigation technical parameters of winter wheat under drip irrigation in northern Henan province,the effects of different dripper discharges (2.0,4.0,6.0 L/h) and the spacing of drip irrigation lateral springs (40,60,80,100,120 cm) on soil distribution of irrigation water,winter wheat yield and water use efficiency were studied in a field experiment.The result showed that:In terms of the drip irrigation uniformity,reducing the distance between drip irrigation lateral spacing and increasing the dripper discharge could improve the distribution uniformity of irrigation water in the root zone of winter wheat.Under the experimental conditions in this study,the yield and composition of winter wheat were affected by the spread of drip irrigation lateral spacing over 80 cm,and the yield of winter wheat increased with the increase of the dripper discharge with the same drip irrigation lateral spacing.In terms of water use efficiency,the appropriate combination of drip irrigation lateral spacing and dripper discharge could effectively reduce water consumption and improve water use efficiency under the same irrigation condition.The present results suggested that the parameter combination of drip irrigation lateral spacing of 60 cm and dripper discharge 2.0 L/h had the highest yield (10 626.45 kg/hm2) and the highest water use efficiency (2.42 kg/m3).Through the comprehensive analysis of irrigation water uniformity,winter wheat yield and water use efficiency,the parameter combination of 60 cm drip irrigation lateral spacing,dripper discharge 2.0 L/h,80 cm drip irrigation lateral spacing,and dripper discharge 6.0 L/h were the optimal technical parameters for winter wheat drip irrigation.

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衣若晨, 申孝军, 李松敏, 薛铸, 董建舒, 杨丽霞, 高阳.豫北地区冬小麦滴灌灌水技术参数研究[J].水土保持学报,2023,37(2):208~216

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  • 收稿日期:2022-08-19
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  • 在线发布日期: 2023-02-24
  • 出版日期: 2023-04-28