单 位：
烟台师范学院地理系;西北农林科技大学水利与建筑工程学院
关键词：
参考蒸发蒸腾量;Penman-Monteith公式;经验系数;Hargreaves公式
摘 要：
介绍了联合国粮农组织(FAO)推荐的Hargreaves公式计算参考作物蒸发蒸腾量与Penman-Monteith公式计算值的转换系数,依据位于陕西省杨凌区的西北农林科技大学灌溉试验站19a的气象观测资料,分别用FAO推荐的Penman-Monteith公式和Hargreaves公式计算对应时段的参考作物蒸发蒸腾量,然后通过分析确定出Hargreaves公式的经验系数。经验证表明,得出的结果可靠,可应用于生产实际。
译 名：
Determination of the empirical coefficient of Hargreaves formula in computing crop evapo-transpiration
作 者：
ZHAO Yong~1, CAI Huan-jie~1, WANG Jian~1, ZHANG Zhenhua~2(College of Hydraulics and Construction Engineering, Northwest A & F university, Yangling, Shaanxi 712100, China; 2.Geography department, Yantai normal College, Yantai, Shandong, 264000, China)
关键词：
reference evapo-transpiration; Penman-Monteith Formula; emppirical coefficient; Hargreaves formula
摘 要：
The paper introduces the ratio to mutually transform between the reference evapo-transpirations by FAO-recommended Hargreaves formual and by Penman-Monteith Formula, then uses Hargreaves formula and Penman-Monteith Formula to calculate the crop evapo-transpirations during various growth periods with the 19-year meteorological data measured by the Experiment Station of Irrigation of the Northwest A&F University, and late on determines the empirical coefficient of Hargreaves formula through analysis. The experiences prove that the result is reliable and feasible for production practices.
