| 引用本文: | 赵宝山,闫浩芳,张 川,等.Venlo型温室内参考作物蒸散量计算方法比较研究[J].灌溉排水学报,2018,37(7):61-66. |
| ZHAO Baoshan,YAN Haofang,ZHANG Chuan,et al.Venlo型温室内参考作物蒸散量计算方法比较研究[J].灌溉排水学报,2018,37(7):61-66. |
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| 摘要: |
| 【目的】明确温室内参考作物蒸散量(ET0)计算方法。【方法】通过实测Venlo型温室内气象数据,并对FAO-56 Penman-Monteith (FAO-56 P-M)中隐含的空气动力阻力r*a进行修正，以修正后的Penman-Monteith法作为计算温室内ET0的标准方法，对其他4种常用的ET0计算方法：FAO-56 P-M法、FAO-24 Penman法、Irmak-Allen (I-A)法、Priestley-Taylor (P-T)法进行了对比分析。【结果】试验期间温室内日ET0变化范围为0.49~6.04 mm/d,平均为2.43 mm/d;4种计算方法与Penman-Monteith (P-M)修正法均具有良好的线性关系(R2 >0.90)，FAO-24 Penman法与P-M修正法计算结果最为接近(RMSE=0.40 mm/d，NSE=0.93)，其次为I-A法(RMSE=0.67 mm/d，NSE=0.81)、P-T法(RMSE=0.76 mm/d，NSE=0.76)，而在大田条件下广泛应用的FAO-56 P-M法表现最差(RMSE=1.18 mm/d，NSE=0.41)。【结论】4种ET0计算方法中，I-A法应用最简便，可作为气象资料短缺条件下该地区温室ET0的简化计算方法。 |
| 关键词: 温室； 气象数据； 蒸散量； ET0； Penman-Monteith模型； 作物需水量 |
| DOI：10.13522/j.cnki.ggps.2017.0507 |
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| Comparison of Different Methods for Calculating the Evapotranspiration in Venlo-type Greenhouse |
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ZHAO Baoshan, YAN Haofang, ZHANG Chuan, Samuel Joe Acquah, WU Haimei, ZHANG Hengnian
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Jiangsu University a. Research Center of Fluid Machinery Engineering and Technology; b. Institute of Agricultural Engineering, Zhenjiang 212013, China)
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| Abstract: |
| 【Objective】 Different methods are available for calculating the reference crop evapotranspiration (ET0), and the purpose of this paper is to compare their applications in irrigated greenhouses.【Method】 Experiment was carried out in a Venlo-type greenhouse with the meteorological factors in the house measured. The FAO-56 Penman-Monteith formula was modified using a fixed aerodynamic resistance r*a. We compared four commonly-used models to calculate the evapotranspiration: the FAO-56 Penman-Monteith, the FAO-24 Penman-Monteith method, the Priestley-Taylor and the Irmak-Allen, with the Penman-Monteith modified (P-MM) as the control.【Result】During the experimental period, the daily ET0 varied from 0.49 to 6.04 mm/d with an average of 2.43 mm/d. The evapotranspiration calculated using all models was linearly correlated (R2>0.9) to the values calculated from the P-MM, with the FAO-24 having RMSE=0.40 mm/d and NSE=0.93, the Irmak-Allen having RMSE=0.67 mm/d and NSE=0.81, and the Priestley-Taylor having RMSE=0.76 mm/d and NSE=0.76. The FAO-56 Penman-Monteith model was widely used in the field, but its application to the greenhouse was unsatisfactory with RMSE=1.18 mm/d and NSE=0.41. 【Conclusion】 Comparing all available models showed that the Irmak-Allen model is most suitable for calculating ET0 in the greenhouses. |
| Key words: greenhouse; meteorological data; evapotranspiration; ET0;Penman-Monteith model; crop waterrequirement |
