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GQZ - Z1 型称重式蒸渗计的研制及标定

党选发1杨兴国2张旭东3孔令旺1李晓峰1杨启国4   

  1. 1. 甘肃省气象信息与技术装备保障中心,甘肃 兰州 730020 ;
    2. 宁夏回族自治区气象局,宁夏 银川 750002;
    3. 西北区域气候中心,甘肃 兰州 730020;
    4. 甘肃省气象局,甘肃 兰州 730020
  • 出版日期:2013-12-14 发布日期:2013-12-14
  • 基金资助:

    公益性行业(气象)科研专项(GYHY201106043)的资助

Development and Calibration of the GQZ - Z1 Type Weighing Lysimeter

DANG Xuanfa1YANG Xingguo2ZHANG Xudong3KONG Lingwang1LI Xiaofeng1YANG Qiguo4   

  1. 1. Meteorological Information and Technology & Equip Support Center of Gansu,Lanzhou 730020,China;
    2. Ningxia Autonomous Region Meteorological Service,Yinchuan 750002,China;
    3. Northwest Regional Climate Center,Lanzhou 730020,China;
    4. Gansu Provincial Meteorological Service,Lanzhou 730020
  • Online:2013-12-14 Published:2013-12-14
  • Supported by:

    党选发(1972 - ),男,甘肃庆阳人,高级工程师,主要从事气象仪器计量检定与技术装备保障的研究. Email:dangxfa@163. com

摘要:

在土壤水分蒸散量测量仪器研制中,首次在蒸渗计的原状土柱与反滤层接触部分安装了自动补(抽)水设备,使土桶内原状土柱与大田内的土壤水分保持一致。提出了传感器的参数选用原则和蒸渗计标定方法。经过安装和标定使用,GQZ - Z1 蒸渗计的精度达到设计和观测 0. 1 mm 的要求,能够有效提高农田蒸散量的观测精度,其测定值能很好地反映植物在短时段内的蒸散变化。

关键词: GQZ - Z1 蒸渗计, 研制, 标定

Abstract:

For the first time,a water pump system was incorporated in the place between the undisturbed soil column and the inverted
filter in the weighing lysimeter,which is used to balance the moisture between the undisturbed soil in the soil bucket and the fields. Al-
so,the principles for the parameters selection of the sensors and the methods for the calibration of lysimeter were proposed in the pa-
per. It was found that the modified weighing lysimeter,namely GQZ - Z1,satisfied the 0. 1 mm of design and observation precision re-
quirement. Higher accuracy in the measurement of evapotranspiration in farmland can be reached by the new GQZ - Z1 lysimeter. The
measured value effectively reflected the evapotranspiration variation of the plant within a short period.

Key words: GQZ - Z1lysimeter, development, calibration

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