Journal of Hebei University of Water Resources and Electric Engineering ›› 2019, Vol. 29 ›› Issue (2): 13-21+27.DOI: 10.16046/j.cnki.issn2096-5680.2019.02.003

• Technology Theory and Application • Previous Articles     Next Articles

ET Based Analysis on Water Saving Effect of Subsurface Drip Irrigation on Winter Wheat

WANG Er-ying,LIU Yin-liang,LIU Si-qi   

  1. Hebei Promotion center of water resources research and hydrological technology experiment,050061,Shijiazhuang,Hebei,China
  • Received:2018-10-26 Revised:2019-03-18 Online:2019-06-30 Published:2019-07-31

基于ET的冬小麦地下滴灌节水效果分析

王二英,刘印良,刘思琦   

  1. 河北省水资源研究与水利技术试验推广中心,石家庄石清路69号 050061
  • 通讯作者: 刘印良(1961-),男,河北鹿泉人,正高级工程师,主要从事农田水利方面的研究。E-mail:13931865615@163.com
  • 作者简介:王二英(1975-),女,河北平山人,正高级工程师,主要从事农田水利及灌溉试验方面的研究。

Abstract: To explore the new efficient water-saving irrigation mode suitable for the field crops in middle southern Hebei and effectively reduce the irrigation water for crops,especially for winter wheat,the experimental study of water consumption of winter wheat by different embedded depth of droppers under subsurface drip irrigation is carried out and the water consumption,yield and water utilization rate of winter wheat under different mode of subsurface drip irrigation and pipe irrigation are compared for the purpose of saving water and stable yield.Through the analysis of change of soil water content at different depths and the water utilization rate after irrigation,and in combination with the production practice,it is suggested that the suitable embedding depth of drip irrigation pipe is 25~30cm;The results of variance analysis of water consumption and yield show that the difference of water consumption and production under different irrigation modes is significant.The results of correlation analysis show that the water consumption and yield of winter wheat under subsurface drip irrigation mode is expressed in a single peak curve.Compared with pipe irrigation,subsurface drip irrigation doesn’t show obvious advantage in increasing production in trial period.But in the case of similar yield,the quota of subsurface drip irrigation reduced 60mm than that of pipe irrigation.According to the results of the experiment,if subsurface drip irrigation is carried out in all the well irrigation areas of middle southern Hebei,the water-saving potential will be tremendous and the effect will be remarkable.

Key words: winter wheat, subsurface drip irrigation, yield, water utilization rate, water saving

摘要: 为探索适宜河北省中南部地区大田作物高效节水灌溉新模式,有效压减农作物特别是冬小麦的灌溉用水量,以节水、稳产为目标,开展了地下滴灌模式下不同滴管埋置深度时冬小麦耗水规律的试验研究,比较了地下滴灌与管灌模式下的冬小麦耗水量、产量、水分利用效率等。通过对灌溉后不同深度土层的土壤含水量变化和水分利用效率的分析,结合生产实际,提出了地下滴灌模式下滴管适宜的埋置深度为25~30cm;对耗水量、产量方差分析的结果表明,不同灌溉方案对耗水量、产量影响差异均显著。相关分析结果表明,地下滴灌模式下冬小麦的耗水量和产量为单峰曲线;在试验时段内,地下滴灌与管灌比较没有明显的增产优势,但是在产量相近的情况下,地下滴灌比管灌的灌溉定额会减少60mm。如果在河北省中南部地区的纯井灌区全部实施地下滴灌工程,按照试验成果推算,其节水潜力巨大,效果显著。

关键词:  , 冬小麦, 地下滴灌, 产量, 水分利用率, 节水

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