燕山北部丘陵温热区ET_0估算方法比较及修正  

Comparison and Revision of ET_0 Estimation Methods for the Hilly and Warm Area in the North of Yan Shan Mountain

作　　者：张昊[1] 郝春雷[1] 董喆[1] 郑伟[1] 张丽妍[1] 边丽梅[1] 孟繁盛[1] 慈艳华[1] 霍剑锋[1] ZHANG Hao;HAO Chun-lei;DONG Zhe;ZHENG Wei;ZHANG Li-yan;BIAN Li-mei;MENG Fan-sheng;CI Yan-hua;HUO Jian-feng(ChiFeng Academy of Agricultural and Animal Husbandry Sciences,Chifeng 024031,Inner Mongolia,China)

机构地区：[1]赤峰市农牧科学研究院,内蒙古赤峰024031

出　　处：《节水灌溉》2018年第8期81-84,89,共5页Water Saving Irrigation

基　　金：国家重点研发计划粮食丰产增效科技创新专项(2017YFD0300801);国家公益性行业(农业)科研专项(201303125-08);国家玉米产业技术体系赤峰综合试验站项目(CARS-02-49)

摘　　要：参考作物需水量(ET_0)是计算作物需水量、指导农田灌溉和水资源规划的重要依据。根据赤峰气象站34a长系列资料(包括最高气温、最低气温、相对湿度、平均风速和日照时数),利用FAO56-PM公式对3种ET_0估算方法(Hargreaves公式、Mc Cloud公式、Irmark-Allen公式)进行比较分析,主要依据平均偏差、平均相对偏差、相关系数3种指标分别对日、旬、月序列的吻合度进行评价。结果表明:Hargreaves公式和Irmark-Allen公式与FAO56-PM吻合较好,其次为Mc Cloud公式,从而说明Hargreaves公式和Irmark-Allen公式在该区运用的可行性,通过回归分析对二者进行修正,得出Harg公式与FAO56-PM计算结果更为接近,即Harg公式更适合燕山北部丘陵温热区ET_0的计算和预测。Reference Corp evapotranspiration （ETo ） provides an important evidence for determining crop water requirement, guiding farmland irrigation and water resources planning. In this work, based on the 34-year （1981-2014） long term meteorological database （ including max-air temperature, min-air temperature, relative humidity, average wind speed and sunshine duration） obtained form ChiFeng meteorological stations, and according to three indexes, including mean deviation, mean relatives deviation and correlation coefficient, the FAO56-PM equation is used to evaluate the fitness degree among the estimated ETo values of 1 d, 10 d and 1 month by three ETo estimation methods, i. e. Hargreaves, MeClond and Irmark-Allen. The results show that the estimated values by Hargreaves method and Irmark-Allen method are better than that by the McCloud method. This indicates that the two methods are feasible for the practical ETo calculation method of this region. Through regression analysis, Hargreaves equation and Irmark-Allen method are revised, and the results show that calculation results of Harg are closer to that of FAO56-PM, which means that the Harg equation is more suitable for ETo calculation and prediction in the hilly and warm area in the north of Yanshan mountain.

关 键 词：参考作物需水量 预测 评价 修正 燕山北部丘陵温热区 

分 类 号：S275[农业科学—农业水土工程]