基于Penman-Monteith方程的温室茶树蒸腾蒸发模型研究  

Research on Evapotranspiration model of Tea Plants in Greenhouse Based on Penman-Monteith Equation

作　　者：王林林[1] 马文杰[1] 马德新[1,2,3] 

机构地区：[1]青岛农业大学动漫与传媒学院,山东青岛266109 [2]山东省科学院山东省计算中心,济南250101 [3]山东大学计算机科学与技术学院,济南250101

出　　处：《节水灌溉》2017年第8期30-33,43,共5页Water Saving Irrigation

基　　金：国家重点研发计划项目(2016YFD0702103);山东省重点研发计划项目(2015GNC110033;2015GGX101016;2014GNC110019);山东省科技重大专项2015ZDZX10002;山东省现代农业产业技术体系项目(SDAIT-19-01);青岛市民生科技计划项目(15-9-2-104-nsh;14-8-3-6-nsh;14-2-3-56-nsh)

摘　　要：作物需水量是确定灌溉用水定额的基础,其关键参数是作物的蒸腾蒸发量(腾发量)。以PenmanMonteith方程为基础,借鉴P-M温室修正式的计算方法,提出了基于常规气象数据和茶树生长发育指标的温室茶树蒸腾蒸发模型ET0(Tea)。在试验期间,选取茶园温室2016年3月10日-4月10日的气象数据,利用P-M温室修正式和温室茶树蒸腾蒸发模型ET0(Tea)对作物腾发量进行逐日统计,并用水量平衡原理验证,结果表明ET0(Tea)与实测值的变化趋势较为一致,误差相对较小,且在晴天条件下比阴天效果更好。我们提出的ET0(Tea)计算精度较高,在理论和实践上均具有较好的可行性,可作为北方温室茶树灌溉决策的重要依据。Crop water requirement is the basis for determining irrigation norm. The crop evapotranspiration is the key parameter. Due to the large water demand of tea plants during growth period, determining the reasonable irrigation water quota of tea plants is very necessary. On the basis of Penman-Monteitb equation, referencing the calculation method of modified P-M equation in greenhouse, the evapotranspiration model for tea plants in greenhouse based on normal meteorological data and tea plant growth indexes is proposed. During the experiment, the meteorological data of tea plantation greenhouse from Mar. 10 to Apr. 10 of 2016 was selected, the modified P-M greenhouse equation and greenhouse tea tree evapotranspiration model were used to analyze the evapotranspiration data day by day, and the water balance theory was used to verify the analysis results. The result indicates that the change trend of ETo（Tea） value is accordance with the measured one and the error is small; the result in sunshine day is better than that in cloudy day. The ETo calculation method proposed in this paper has high precise and good feasibility in theory and application, and can be used as the important base for determining the irrigation of north greenhouse tea tree.

关 键 词：P-M温室修正式 蒸腾蒸发量 茶树 计算模型 灌溉 

分 类 号：S161.4[农业科学—农业气象学] S275[农业科学—农业基础科学]