| Cite this article: | 刘伟,徐冰,汤鹏程,等.高寒区低温水灌溉对春青稞生长和地温变化的影响初步研究[J].灌溉排水学报,2020,(7):-. |
| LIU Wei,Xu Bing,TANG Pengcheng,et al.高寒区低温水灌溉对春青稞生长和地温变化的影响初步研究[J].灌溉排水学报,2020,(7):-. |
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| Effect on low Temperature water Irrigation on the growth of spring Highland Barley and the Change of ground Temperature |
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LIU Wei1,2,3, Xu Bing4, TANG Pengcheng2, LI Zekun2
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1.College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University,Hohhot ,China;2.Institute of Water Resources for Pastoral Area,China Institute of Water Resources and Hydropower Research;3.China;4.Institute of Water Resources for Pastoral Area，China Institute of Water Resources and Hydropower Research
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| Abstract: |
| 【Objective】For clear High cold region of Tibet spring snow melt water on crop production, the influence of the rational utilization of snowmelt water resources, 【Method】with low temperature water irrigation in the spring of highland barley as the research object, the traditional canal irrigation for comparison, in 2018 to carry out the low temperature water irrigation on spring barley to moderate the effects of growth and yield of experimental study, 【Result】the results show that the low temperature water irrigation group than traditional canal irrigation 0 to 10 cm, 10 - 20 cm, reduce soil average temperature 1.41 ℃, 0.67 ℃.The yield components of spring highland barley in low-temperature water irrigation were lower than that in traditional canal irrigation, with the average plant height of wheat decreased by 6.3cm, the average weight of 100 grains decreased by 1.26g, and the average panicle length decreased by 0.67cm.Compared with traditional canal irrigation, the yield of spring highland barley irrigated by low-temperature water decreased by 3440.89kg /hm2 respectively. 【Conclusion】Low temperature cold injury embodied water irrigated spring barley is formed at the beginning of the crop growth, the water temperature by influencing the soil temperature indirectly affect crop root growth, delayed highland barley emergence and reduce the effective panicles, highland barley delay late mature, and due to previous root development is affected by the cumulative booting grouting are affected.Raising the temperature of spring irrigation is beneficial to the improvement of various yield indexes of highland barley. The reasonable conduct of spring irrigation with snowmelt water is suggested to take a small number of times as the principle. The irrigation water should reach the field when the daily ground temperature is high as far as possible to avoid the cold damage of snowmelt water to the greatest extent. |
| Key words: snowmelt water; Irrigation; The ground temperature; production |
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