高寒区低温水灌溉对春青稞生长和地温变化的影响
高寒区低温水灌溉对春青稞生长和地温变化的影响
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LIU, Wei , XU, Bing , TANG, Pengcheng and LI, Zekun
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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【目的】明确西藏高寒区融雪水春灌对作物减产的影响，合理利用融雪水资源灌溉。【方法】以蓄水池（日照5 h）常温水灌溉（7~15 ℃）为对照，采用桶栽试验，设置低于灌溉水温度3、5、7 ℃的3个温度水平，于2018年开展低温水灌溉对春青稞生长、产量及地温影响的试验研究。【结果】所有低温水灌溉处理0~10、10~20 cm土层土壤平均温度较渠道常温水灌溉降低1.41、0.67 ℃。低温水灌溉条件下春青稞产量构成要素均低于常温水灌溉，株高平均降低6.3 cm、百粒质量平均低1.26 g、单株穗长平均降低0.67 cm。低温水灌溉春青稞形成寒害集中体现在作物分蘖期，使青稞出苗、分蘖推迟，拔节期表现为有效穗数的降低，生育后期表现出青稞成熟期的推迟，并且由于前期根系发育受到累积寒害影响导致孕穗灌浆等均受到...
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高寒区低温水灌溉对春青稞生长和地温变化的影响
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TN_cdi_wanfang_journals_ggps202009008
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_ggps202009008
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1672-3317
DOI
10.13522/j.cnki.ggps.2019315
