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Since the publication of FAO Irrigation and Drainage Paper No. 24 in 1977, advances in research and more accurate assessment of crop water use have revealed the need to update the FAO methodologies for calculating ETo. The FAO Penman method was found to frequently

Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56

1998年1月1日 · Most of these studies, based on the FAO Irrigation and Drainage Paper No. 56 (FAO-56; Allen et al., 1998) approach, compute ET c as a product of two factors: the evaporative demand of the ...

2015年1月1日 · The FAO Irrigation and Drainage Paper No 56 “Crop Evapotranspiration” was introduced in 1998 by the Food and Agriculture Organization of the United Nations, to revise guidelines for computing crop water requirements (Allen et al., 1998). Since its publication FAO56 has become one of FAO's best selling publications and, with more than 11,500 ...

FAO Penman-Monteith equation which is one of the most-widely used equations for this purpose. If Deltais missing, the function uses the argumnet T_meanto compute its value.

作 物 腾 发 量 作 物 腾 发 量 作物需水量计算指南 编著者： Richard G. Allen Utah State University Luis S. Pereira Instituto Superior de Agronomia Lisbon, Portugal Dirk Raes Katholieke Universiteit Leuven Leuven, Belgium Martin Smith Water Resources, Development and …

56 Evapotranspiración del cultivo Guías para la determinación de los requerimientos de agua de los cultivos Richard G. Allen Utah State University Logan, Utah, EE.UU. Luis S. Pereira ... FAO. ORGANIZACIÓN DE LAS NACIONES UNIDAS PARA LA …

2015年7月7日 · 联合国粮农组织（FAO）：作物监测预警月报，2024年2月; 温室滴灌西瓜作物系数的修正及模拟研究; 七 均匀加宽工作物质的增益系数; 一种冬小麦区域作物系数测算方法; Crops statistics-concepts definitions and classifications-FAO作物统计的概念，定义和分类-粮农组织

2022年4月21日 · FAO Penman-Monteith方法是通过将参考作物定义为假设作物，假设高度为0.12 m，表面阻力为70 s m-1，反照率为0.23，与高度均匀、生长活跃且水分充足的绿草广阔表面的蒸发非常相似。