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首页> 外文期刊>Chinese Geographical Science >Water requirements and irrigation scheduling of spring maize using GIS and CropWat model in Beijing-Tianjin-Hebei region
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Water requirements and irrigation scheduling of spring maize using GIS and CropWat model in Beijing-Tianjin-Hebei region

机译：基于GIS和CropWat模型的京津冀地区春玉米需水量与灌溉制度研究。

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摘要

Due to the over use of available water resources, it has become very important to define appropriate strategies for planning and management of irrigated farmland. In this paper, Beijing-Tianjin-Hebei (Jing-Jin-Ji) region was chosen as the case study area for its special political and economic status and its severe water problem. To achieve effective planning, the information about crop water requirements, irrigation withdrawals, soil types and climatic conditions were obtained in the study area. In the meantime, a GIS method was adopted, which extends the capabilities of the crop models to a regional level. The main objectives of the study are: 1) to estimate the spatial distribution of the evapotranspiration of spring maize; 2) to estimate climatic water deficit; 3) to estimate the yield reduction of spring maize under different rainfed and irrigated conditions. Based on the water deficit analysis, recommended supplemental irrigation schedule was developed using CropWat model. Compared to the rainfed control, the two or three times of supplemental water irrigated to spring maize at the right time reduced the loss of yield, under different scenarios.
机译：由于对可用水资源的过度使用，为灌溉农田的规划和管理确定适当的策略已经变得非常重要。本文以京津冀地区为例，以其特殊的政治，经济地位和严重的水资源问题为例。为了实现有效的计划，在研究区域获得了有关作物需水量，灌溉取水量，土壤类型和气候条件的信息。同时，采用了GIS方法，将作物模型的功能扩展到了区域级别。该研究的主要目的是：1）估算春玉米蒸散量的空间分布； 2）估算气候缺水； 3）估算不同雨养和灌溉条件下春玉米的减产。基于水分亏缺分析，使用CropWat模型制定了建议的补充灌溉计划。与雨养控制相比，在不同的情况下，在适当的时间灌溉春季玉米的补充水两到三倍可以减少产量损失。

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  • 来源
    《Chinese Geographical Science》 |2007年第1期|56-63|共8页
  • 作者

    Zhiming Feng; Dengwei Liu; Yuehong Zhang;

  • 作者单位

    Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China;

    Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China;

    Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    spring maize; climatic water deficit; irrigation schedule;

    机译：春玉米;气候缺水;灌溉时间表;

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