基于天气预报信息的参照作物腾发量预报  

Reference Crop Evapotranspiration Forecast Based on Weather Forecasts and Penman-Monteith Equation

作　　者：申润东 张倩 SHEN Run-dong;ZHANG Qian(School of hydraulic and civil engineering,shandong agricultural university,Tai’an Shandong 271018,China)

机构地区：[1]山东农业大学水利土木工程学院

出　　处：《科技视界》2019年第35期167-169,共3页Science & Technology Vision

摘　　要：为获得较精确的参照作物腾发量(ET0)短期预报结果,提出使用天气预报信息和Penman-Monteith(P-M)公式进行预报的方法。通过解析某市7个月中逐日对未来三天的气象预报数据,获得Penman-Monteith公式所需参数,进行逐日ET0预报并与用实测气象数据计算的ET0值进行比较评价,结果显示预见期内ET0预报值在允许误差下的精度达94.7%。本文提出的方法所需数据较易获取且允许误差下精度较高,有助于较精确地对ET0进行预报。In order to obtain an accurate short-term forecast results of reference crop evapotranspiration(ET0),a method of forecasting by using weather forecast information and Penman-Monteith(P-M)equation is proposed.Based on the daily weather forecast and the date of the next three days in a city for seven months,the daily ET0 forecast is calculated and compared with the value calculated by the measured meteorological data.The results show that the accuracy of ET0 prediction during the prediction period is 94.7%under the allowable error.The method proposed in this paper has a high accuracy under allowable error and easy to obtain the required data,which is helpful for accurate prediction of ET0.

关 键 词：参照作物腾发量 PENMAN-MONTEITH公式 天气预报 灌溉预报 

分 类 号：S311[农业科学—作物栽培与耕作技术]