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Comparison of Reference Crop Evapotranspiration Calculated by Penman-Monteith and Modified Penman Methods

Jun Li, Cao Yongmei

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Abstract

利用阿克苏地区1975～2004年的逐日气象资料,分别采用Penman-Monteith公式与Penman修正公式计算了新疆农一师灌区的参照作物腾发量及其辐射项和空气动力项的逐日均值和旬日均值,比较了2种计算方法的绝对偏差和相对偏差,并对引起偏差的原因进行了分析.

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利用阿克苏地区1975～2004年的逐日气象资料,分别采用Penman-Monteith公式与Penman修正公式计算了新疆农一师灌区的参照作物腾发量及其辐射项和空气动力项的逐日均值和旬日均值,比较了2种计算方法的绝对偏差和相对偏差,并对引起偏差的原因进行了分析.

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Available abstract

利用阿克苏地区1975～2004年的逐日气象资料,分别采用Penman-Monteith公式与Penman修正公式计算了新疆农一师灌区的参照作物腾发量及其辐射项和空气动力项的逐日均值和旬日均值,比较了2种计算方法的绝对偏差和相对偏差,并对引起偏差的原因进行了分析.

Key concepts: Penman–Monteith equation, Evapotranspiration, Environmental science, Crop coefficient, Crop, Agronomy, Ecology, Biology

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