黄淮海北片模拟增加和降低温度对麦田地温、水分变化和水分利用效率的影响
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

S152.7;S152.8

基金项目:

国家重点研发计划项目(2017YFD0300203-2);山西省重点研究计划项目(201703D211002-4-4,201703D211002-5)


Effects of Simulated Temperature Increase and Decrease on Ground Temperature, Soil Moisture Change, and Water Use Efficiency in the North of Huang-Huai-Hai Wheat Field
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    采用模拟增降温法研究了温度变化对麦田地温、土壤水分变化和水分利用效率的影响。结果表明:模拟增温麦田、降温麦田在全生育期5 cm平均地温分别较常规麦田平均升高0.85℃和降低2.57℃,其中模拟增温麦田的增温效应以冬季 > 秋季 > 春季,模拟降温麦田的降温效应以春季 > 秋季 > 冬季;模拟增温麦田、降温麦田在全生育期5 cm土层的平均容积含水率分别较常规麦田降低3.76%、提高4.84%。对模拟增温麦田、降温麦田和常规麦田0-200 cm土层水分变化研究表明,模拟增温麦田和常规麦田(除成熟期外)各生育期的贮水量均低于模拟降温麦田;全生育期0-200 cm土层土壤耗水量模拟增温麦田大于模拟降温麦田和常规麦田,其中0-100 cm土层耗水量占0-200 cm土层耗水量的比例模拟增温麦田(55.72%)和常规麦田(55.14%)均低于模拟降温麦田(63.45%),而100-200 cm土层耗水量占0-200 cm土层耗水量的比例模拟增温麦田(44.28%)和常规麦田(44.86%)麦田均高于模拟降温麦田(36.55%);水分利用效率模拟增温麦田低于常规麦田和模拟降温麦田。研究结果可为气候变暖对小麦生产系统的影响提供理论依据和技术支撑。

    Abstract:

    The effects of temperature change on wheat field temperature, soil moisture change, and water use efficiency were studied by simulated temperature increase and decrease method. The results showed that the average 5 cm ground temperature of the warming wheat field and the cooling wheat field in the whole growth period increased by 0.85 oC and decreased by 2.57 oC, respectively, compared with the conventional wheat field. The simulated warming effect of the warming wheat field was winter > autumn > spring, and the simulated cooling effect of the cooling wheat field was spring > autumn > winter. The average volumetric water content of 5 cm soil layer in the whole growth period of the simulated warming and cooling wheat field was 3.76% lower and 4.84% higher than that of conventional wheat field, respectively. The study of soil water change in 0-200 cm soil layer of simulated warming, cooling wheat field, and conventional wheat field showed that the water storage of simulated warming and conventional wheat field (except mature stage) was lower than that of simulated cooling wheat field at all growth stages; the water consumption in 0-200 cm soil layer during whole growth period in warming wheat field was higher than that in simulated cooling and conventional wheat field, of which the proportion of 0-100 cm water consumption to 0-200 cm in simulated warming wheat field (55.72%) and conventional wheat field (55.14%) was lower than that of simulated cooling wheat field (63.45%), while the proportion of water consumption of 100-200 cm to 0-200 cm in simulated warming wheat field (44.28%) and conventional wheat field (44.86%) was higher than that of simulated cooling wheat field (36.55%). The water use efficiency of simulated warming wheat field was lower than that of conventional wheat field and simulated cooling wheat field. This study can provide theoretical basis and technical support for the impact of climate warming on wheat production system.

    参考文献
    相似文献
    引证文献
引用本文

靖华,马爱平,亢秀丽,王裕智,崔欢虎,张建诚.黄淮海北片模拟增加和降低温度对麦田地温、水分变化和水分利用效率的影响[J].水土保持学报,2020,34(1):217~224

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-07-26
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2020-02-15
  • 出版日期: