基于冠气温差的温室黄瓜蒸散量模拟  

Simulation of greenhouse cucumber evapotranspiration based on canopy-air temperature difference

作　　者：蒋建辉 闫浩芳 张川[3] 王国庆[2] 张建云[2] 梁少威 邓帅帅 JIANG Jianhui;YAN Haofang;ZHANG Chuan;WANG Guoqing;ZHANG Jianyun;LIANG Shaowei;DENG Shuaishuai(National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013,China;The National Key Laboratory of Water Disaster Prevention,Nanjing Hydraulic Research Institute,Nanjing,Jiangsu 210029,China;School of Agricultural Enginee-ring,Jiangsu University,Zhenjiang,Jiangsu 212013,China)

机构地区：[1]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013 [2]南京水利科学研究院水灾害防御全国重点实验室,江苏南京210029 [3]江苏大学农业工程学院,江苏镇江212013

出　　处：《排灌机械工程学报》2024年第5期532-540,共9页Journal of Drainage and Irrigation Machinery Engineering

基　　金：“十四五”国家重点研发计划项目(2021YFC3201103);国家自然科学基金资助项目(41860863,52121006,51509107,51609103);水文水资源与水利工程国家重点实验室专项基金资助项目(2020nkzd01);江苏省博士后研究项目(Bs510001);江苏省农业装备与智能化高新技术重点实验室开放基金资助项目(JNZ201917)。

摘　　要：通过建立基于不同时刻冠气温差(T c-T a)的温室黄瓜日蒸散量(ET c)估算模型,分析了基于不同时刻T c-T a对估算ET c的准确性;同时,基于T c-T a构建了估算黄瓜不同生育期ET c的Jackson模型,并将模型估算结果与基于冠层阻力参数(r c)的Penman-Monteith模型及蒸渗仪实测数据进行比较,结果显示,基于14:00的T c-T a构建的Jackson模型,估算温室黄瓜ET c的精确度最高(R 2为0.937),误差最小(RMSE为0.722 mm/d);相比Penman-Monteith模型(R 2为0.964),基于T c-T a的Jackson经验模型对黄瓜ET c估算结果与实测值相关性更高(R 2为0.967),误差更小(RMSE为0.735 mm/d).研究结果可为温室ET c模拟以及节水灌溉智能决策提供科学依据.The estimation models of daily evapotranspiration(ET c)of cucumber in greenhouse were established based on canopy-air temperature difference(T c-T a)at different times,and the accuracy of estimating of T c-T a at different times on ET c was analyzed.The Jackson model based on T c-T a was constructed according to the different growth stages of cucumber,and the estimated results of the model were compared with the Penman-Monteith model based on canopy resistance parameter(r c)and the measured data of evapotranspiration meter.The conclusions are found that the Jackson model constructed based on T c-T a at 14:00 shows the highest accuracy(R 2 is 0.937)and the lowest error(RMSE is 0.722 mm/d)in estimating greenhouse cucumber ET c.Compared with the Penman-Monteith model(R 2 is 0.964),the ET c estimation of Jackson empirical model based on T c-T a has a slightly higher correlation(R 2 is 0.967)with the measured values and the deviation is smaller(RMSE is 0.735 mm/d).The results can provide a basis for simulating evapotranspiration of greenhouse crops and scientific decision-making of water-saving irrigation.

关 键 词：冠气温差 冠层温度 温室黄瓜 蒸散量 Jackson模型 

分 类 号：S274[农业科学—农业水土工程] TV93[农业科学—农业工程]