利用蒸发计估测参考作物蒸发蒸腾量的试验研究  

Experimental study on application of evapotranspirometers to reference crop evapotranspiration estimates

作　　者：张晓涛[1] 康绍忠[2] 

机构地区：[1]西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100 [2]中国农业大学农业水问题研究中心,北京100083

出　　处：《水利水电科技进展》2007年第1期91-94,共4页Advances in Science and Technology of Water Resources

摘　　要：根据联合国粮农组织推荐的方法估算参考作物蒸发蒸腾量(ET0)需要具备一定的气象资料,而使用另一种方法,即蒸发计估测ET0,可以减少基于作物蒸发蒸腾量制定灌溉制度的工作量,并且降低其复杂度。在叙述蒸发计构造及使用方法的基础上,介绍了一些研究者在不同气候条件下对蒸发计估测ET0准确度的试验研究。试验表明,在缺乏标准气象资料时,可以利用蒸发计来可靠地估测农场或更广阔领域的ET0。Reference crop evapotranspiration （ETo ） estimates on the basis of FAO recommended methodology require same meteorological data; however another approach, i .e. the use of evapotranspirometers for ETo estimates, can reduce the work load and decrease the complexity associated with ETo-based irrigation scheduling. Based on analysis of the structure and utilization method of evapotranspirometers, an introduction was given to same experimental studies on the reliability of ETo estimates by use of evapotranspirometers under different meteorological conditions. The result shows that evapotranspirometers can be used for reliable estimates of ETo of farmland and even wide ranges when normal meteorological data are not available.

关 键 词：蒸发计 灌溉 蒸发蒸腾量 

分 类 号：P332.2[天文地球—水文科学]