农业工程学报
農業工程學報
농업공정학보
2012年
24期
92-97
,共6页
赵璐%梁川%崔宁博%梁煜峰
趙璐%樑川%崔寧博%樑煜峰
조로%량천%최저박%량욱봉
蒸散发%气候%计算%ET0%相对湿度%PM 法%Hargreaves 校正法%Priestley-Taylor 法%Irmark-Alleen拟合改进法
蒸散髮%氣候%計算%ET0%相對濕度%PM 法%Hargreaves 校正法%Priestley-Taylor 法%Irmark-Alleen擬閤改進法
증산발%기후%계산%ET0%상대습도%PM 법%Hargreaves 교정법%Priestley-Taylor 법%Irmark-Alleen의합개진법
evapotranspiration, climatology, calculations, ET0, relative humidity, PM method, Hargreaves correction method, Priestley-Taylor method, Irmark-Alleen fitting change method
为了获取川中丘陵地区参考作物蒸散量（ET0）在气象资料短缺条件下不同类型的简化计算方法，选用FAO-56 Penman-Monteith（PM）法、Hargreaves 法、Hargreaves 校正法、Priestley-Taylor 法和 Irmark-Alleen 拟合法计算简阳站 1999－2005 年逐日的 ET0。以 PM 公式为标准，对其他 4 种方法进行评价及改进。结果表明，Hargreaves校正法和 Priestley-Taylor 法计算误差较小，Irmark-Alleen 拟合法和 Hargreaves 法计算误差较大。通过灵敏度分析，得出川中丘陵地区影响 ET0 的主要气象因子是相对湿度，因此该文对在湿润气候条件下应用的 Irmark-Alleen 拟合法的参数进行逐月修正，改进后的计算方法精度得到明显提高。Hargreaves 校正法、Priestley-Taylor 法和该文提出的 Irmark-Alleen 拟合改进法可以作为川中丘陵地区气象资料短缺条件下 ET0 的简化计算方法。
為瞭穫取川中丘陵地區參攷作物蒸散量（ET0）在氣象資料短缺條件下不同類型的簡化計算方法，選用FAO-56 Penman-Monteith（PM）法、Hargreaves 法、Hargreaves 校正法、Priestley-Taylor 法和 Irmark-Alleen 擬閤法計算簡暘站 1999－2005 年逐日的 ET0。以 PM 公式為標準，對其他 4 種方法進行評價及改進。結果錶明，Hargreaves校正法和 Priestley-Taylor 法計算誤差較小，Irmark-Alleen 擬閤法和 Hargreaves 法計算誤差較大。通過靈敏度分析，得齣川中丘陵地區影響 ET0 的主要氣象因子是相對濕度，因此該文對在濕潤氣候條件下應用的 Irmark-Alleen 擬閤法的參數進行逐月脩正，改進後的計算方法精度得到明顯提高。Hargreaves 校正法、Priestley-Taylor 法和該文提齣的 Irmark-Alleen 擬閤改進法可以作為川中丘陵地區氣象資料短缺條件下 ET0 的簡化計算方法。
위료획취천중구릉지구삼고작물증산량（ET0）재기상자료단결조건하불동류형적간화계산방법，선용FAO-56 Penman-Monteith（PM）법、Hargreaves 법、Hargreaves 교정법、Priestley-Taylor 법화 Irmark-Alleen 의합법계산간양참 1999－2005 년축일적 ET0。이 PM 공식위표준，대기타 4 충방법진행평개급개진。결과표명，Hargreaves교정법화 Priestley-Taylor 법계산오차교소，Irmark-Alleen 의합법화 Hargreaves 법계산오차교대。통과령민도분석，득출천중구릉지구영향 ET0 적주요기상인자시상대습도，인차해문대재습윤기후조건하응용적 Irmark-Alleen 의합법적삼수진행축월수정，개진후적계산방법정도득도명현제고。Hargreaves 교정법、Priestley-Taylor 법화해문제출적 Irmark-Alleen 의합개진법가이작위천중구릉지구기상자료단결조건하 ET0 적간화계산방법。
In order to obtain simplified calculation methods of ET0 in the conditions of lacking meteorological data in hilly area of central Sichuan Basin, the daily ET0 in Jianyang station from 1999 to 2005 was calculated by FAO-56 Penman-Monteith method, Hargreaves method, Hargreaves correction method, Priestley-Taylor method and Irmark-Alleen fitting method. ET0 calculated by PM method was used as the standard, Hargreaves correction method and Priestley-Taylor method had the minimum error, followed by Irmark-Alleen fitting method and Hargreaves method. Through the sensitivity analysis, the main meteorological factor affecting ET0 was relative humidity in hilly area of central Sichuan Basin. Therefore, the parameters of Irmark-Alleen fitting method used in humid climate were corrected month by month in the paper, and the calculation precision was improved obviously after correcting. Hargreaves correction method, Priestley-Taylor method and Irmark-Alleen fitting change method would be used for the calculation of ET0 in the conditions of lacking meteorological data in hilly area of central Sichuan Basin.
