| 引用本文: | 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):-. |
|
| 摘要: |
| 【目的】为明确西藏高寒区融雪水春灌对作物减产的影响,合理利用融雪水灌水资源,【方法】以低温水灌溉春青稞为研究对象,渠道常温水灌溉为对照,于2018年开展低温水灌溉对春青稞地温和生长及产量的影响的试验研究,【结果】结果表明：低温水灌溉组较渠道常温水灌溉0-10 cm、10-20 cm土壤平均温度降低1.41 ℃、0.67 ℃。低温水灌溉春青稞产量构成要素均表现低于渠道常温水灌溉,株高平均降低6.3cm、百粒重平均低1.26 g、单株穗长平均降低0.67cm。低温水灌溉春青稞较渠道常温水灌溉产量分别降低3440.89 kg/hm2。【结论】低温水灌溉春青稞形成寒害集中体现在作物生育初期,灌水温度通过影响土壤温度间接影响作物根系生长,使青稞出苗推迟,且降低了有效穗数,后期青稞推迟成熟,并且由于前期根系发育受到累计影响导致孕穗灌浆等均受到影响。提高春灌灌水温度有利于青稞各项产量指标的提高,融雪水春灌的合理进行建议以少量多次为原则,灌水尽量在日地温较高时到达田间,最大程度避免融雪水寒害影响。 |
| 关键词: 融雪水;灌溉;地温;产量 |
| DOI： |
| 分类号:S274 |
| 基金项目:中国水利水电科学研究院科研专项(MK2017J02)；国家自然科学(51579158,51609154)；水资源与水电工程科学国家重点实验室开放(2018NSG01)。 |
|
| Effect on low Temperature water Irrigation on the growth of spring Highland Barley and the Change of ground Temperature |
|
LIU Wei1,2,3, Xu Bing4, TANG Pengcheng2, LI Zekun2
|
|
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
|
| 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 |
