仝国栋,刘洪禄,李法虎,杨胜利,范海燕.双作物系数法计算华北地区桃树蒸散量的可靠性评价[J].农业机械学报,2016,47(6):154-162.
Tong Guodong,Liu Honglu,Li Fahu,Yang Shengli,Fan Haiyan.Reliability Evaluation of Dual Crop Coefficient Approach on Evapotranspiration Calculation of Peach Tree in North China[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(6):154-162.
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双作物系数法计算华北地区桃树蒸散量的可靠性评价   [下载全文]
Reliability Evaluation of Dual Crop Coefficient Approach on Evapotranspiration Calculation of Peach Tree in North China   [Download Pdf][in English]
投稿时间:2015-11-26  
DOI:10.6041/j.issn.1000-1298.2016.06.020
中文关键词:  桃树  作物系数  水量平衡法  土壤蒸发量  液流法  一致性评价  作物蒸腾量
基金项目:北京市科委重大项目(D15110500410000)
作者单位
仝国栋 中国农业大学 
刘洪禄 北京市水科学技术研究院 
李法虎 中国农业大学 
杨胜利 北京市水科学技术研究院 
范海燕 北京市水科学技术研究院 
中文摘要:为评估双作物系数法计算华北地区果树蒸散量和作物系数的可靠性,采用液流法和水量平衡法在2012—2013年对桃树蒸散量和作物系数进行了大田小区试验测定。结果表明,双作物系数法计算的蒸散强度与液流法和水量平衡法测定的蒸散强度在果树生育期内均随时间呈先增大后减小的趋势,计算值与2种实测法测定结果之间均显著相关。全生育期蒸散量计算值与实测值的相对误差小于4.5%,但土壤蒸发量计算值比测定值小59.5% ~ 64.8%,而蒸腾量计算值则比测定值大25.6%~26.0%。双作物系数法计算的作物系数与液流法和水量平衡法测定的作物系数也均随生育期呈先增大后减小的趋势,3种方法获得的整个生育期平均作物系数分别为0.90、0.89和0.95。通过对均方根—实测值标准偏差比(RSR)和纳什效率系数(NES)的分析,认为双作物系数法是估算充分灌溉条件下干旱—半干旱地区桃树蒸散量和作物系数的一种有效方法。
Tong Guodong  Liu Honglu  Li Fahu  Yang Shengli  Fan Haiyan
China Agricultural University,Beijing Hydraulic Research Institute,China Agricultural University,Beijing Hydraulic Research Institute and Beijing Hydraulic Research Institute
Key Words:peach tree  crop coefficient  water balance method  soil evaporation  sap flow method  consistency evaluation  crop transpiration
Abstract:In order to evaluate the reliability and applicability of dual crop coefficient approach on calculating actual evapotranspiration and crop coefficient of fruit tree in the North China Plain, the evapotranspiration and crop coefficient of peach tree were measured by sap flow and water balance methods in an orchard of Beijing, China in 2012 and 2013, and the corresponding values were also calculated by dual crop coefficient approach. Experimental results showed that daily evapotranspiration rates calculated by dual crop coefficient approach and measured by sap flow and water balance methods were increased firstly and then decreased with time during peach tree growth period, and the calculated values had significantly positive correlation with those obtained by the twp measurement methods (R2>0.77** and R2>0.76**). The relative error of total actual evapotranspiration in the whole growth period calculated by dual crop coefficient approach was less than 4.5% compared with the measured values by sap flow and water balance methods, but the calculated soil evaporation was 59.5%~64.8% smaller than that measured by micro-lysimeter, and the calculated transpiration was 25.6%~26.0% greater than that measured by sap flow method. The crop coefficients obtained by dual crop coefficient approach, sap flow and water balance methods also showed a increasing trend firstly and then they were decreased with time during the growth period of peach tree, and the average values during the whole growth period were 0.90, 0.89, and 0.95, respectively, for dual crop coefficient approach, sap flow and water balance methods. By calculation and analyses on the ratio of root mean square error to the standard deviation of measured data (RSR) and the Nash—Sutcliffe efficiency (NSE), it can be concluded that dual crop coefficient approach is an effective method to calculate actual evapotranspiration and crop coefficient of peach tree under full irrigation in arid and semi-arid areas.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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