Comparison of Calculation Methods for Potential Reference Crop Evapotranspiration ET_0 in North Xinjiang  

作　　者：Chunyan YIN Hu LIU Ruiqiang ZHANG Jian WANG Yongfu WEI 

机构地区：[1]Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences [2]Institute of Water Resources for Pastoral Area,Ministry of Water Resources

出　　处：《Agricultural Science & Technology》2017年第5期920-923,共4页农业科学与技术（英文版）

基　　金：Supported by Key Scientific and Technological Research and Development Program of Xinjiang(201531115);Special Fund for Scientific Research of China Institute of Water Resources and Hydropower Research(MK2016J10)

摘　　要：Reference crop evapotranspiration (ET_0) is a critical part in water cycle and water balance of ecosystem, which is greatly important to effective utilization of agricultural water resources and for making reasonable irrigation system. In order to propose a suitable method for computing ET_0 in North Xinjiang, based on daily meteorological data from May 1 to September30, 2010 provided by Weather Station of Fuhai County, we used FAO56 Penman-Monteith as the standard formula to compute ET_0, compared the differences and relations between such the method and other 4 calculation formulas, and analyzed the cause of the deviation, finally evaluated the applicability of computational method in North Xinjiang. The results showed that the calculation results by FA056 PM Method was approximate to that by FAO Penman method and IA method, of which the relative error was 9.26% and 13.51% respectively, the ET_0 results calculated by PT method and HS method were generally greater than the results by FAO56 PM, and their deviation was very obvious.Reference crop evapotranspiration （ET_0） is a critical part in water cycle and water balance of ecosystem, which is greatly important to effective utilization of agricultural water resources and for making reasonable irrigation system. In order to propose a suitable method for computing ET_0 in North Xinjiang, based on daily meteorological data from May 1 to September30, 2010 provided by Weather Station of Fuhai County, we used FAO56 Penman-Monteith as the standard formula to compute ET_0, compared the differences and relations between such the method and other 4 calculation formulas, and analyzed the cause of the deviation, finally evaluated the applicability of computational method in North Xinjiang. The results showed that the calculation results by FA056 PM Method was approximate to that by FAO Penman method and IA method, of which the relative error was 9.26% and 13.51% respectively, the ET_0 results calculated by PT method and HS method were generally greater than the results by FAO56 PM, and their deviation was very obvious.

关 键 词：North Xinjiang Reference crop evapotranspiration Calculation method FAO56 PM 

分 类 号：S311[农业科学—作物栽培与耕作技术]