称重式蒸渗仪和管式土壤水分仪在作物腾发量测试实例中的应用结合

Application of Weighing Lysimeter and Pipe-Type Soil Moisture Meter in Measuring Crop Evapotranspiration

作物腾发量是田间水循环和水量平衡系统不可缺少的重要组成部分,深入研究作物腾发量对于作物需水量估算、灌溉制度制定、灌溉系统规划设计等均具有重要的作用和意义。作物腾发量的研究主要通过田间灌溉试验来开展,运用到的设备技术多种多样,实例中用到的就是一种称重式蒸渗仪和一种管式土壤水分测试仪,研究结果可为从事灌溉试验研究人员提供参考。

Crop evapotranspiration is the sum of crop transpiration and soil surface evaporation,and is an indispensable part of water cycle and water balance system.It is very important to study crop evapotranspiration for crop water requirement estimation,irrigation scheduling and irrigation system planning and design.The research on crop evapotranspiration is mainly carried out through field irrigation experiments,using a variety of equipment and technologies,including various types of lysimeters and eddy correlation meters,various soil moisture meters,and advanced technologies such as spectral remote sensing.In this paper,a weighing lysimeter and a pipe-type soil moisture meter are used.The results can provide reference for researchers engaged in irrigation experiments.