基于水面蒸发法的日光温室膜下滴灌番茄需水量计算模型  

Water Requirement Calculation Model of Tomato with Drip Irrigation under Mulch in Sunlight Greenhouse Based on Water Surface Evaporation Method

作　　者：葛建坤[1] 李佳[1] 罗金耀[2] 

机构地区：[1]华北水利水电大学,郑州450011 [2]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《灌溉排水学报》2015年第8期53-56,共4页Journal of Irrigation and Drainage

基　　金：国家自然科学基金项目(50979077);郑州市普通科技攻关项目(20130924)

摘　　要：通过田间试验,使用时域反射仪(TDR)、蒸发皿(E601型和D15.6型)分别测定日光温室膜下滴灌番茄的实际需水量和水面蒸发量,分析了实测需水量与水面蒸发量的关系,建立了水面蒸发法需水量计算模型,并检验其适用性。结果表明,温室内作物需水量与水面蒸发量存在良好的线性关系。基于E601型、D15.6型蒸发皿的温室内作物需水量计算模型的相对误差分别为0.293、0.336,中误差分别为0.926、0.790。以D15.6型蒸发皿的蒸发量估测作物需水量为宜。Through field experiments, actual waler requirement of tomato and water surface evaporation in sunlight greenhouse were measured respectively by the Time Domain Reflectometry and two kinds of evaporating dish （E601 and D15.6）. The relationship between actual water requirement and water surface evaporation was analyzed, the water requirement model by water surface evaporation method was established and its applicability was verified. The results indicated that there was a good linear relationship between actual water requirement and water surface evaporation. The relative errors were 0. 293 and 0. 336, mean square errors were 0. 926 and 0. 790 for water requirement models in greenhouse based on D15.6 and E601 evaporating dishes, respectively. It is recommended that crop water requirement should be estimated by the evaporation of D15.6 dish.

关 键 词：日光温室 膜下滴灌 水面蒸发 需水量 

分 类 号：S641.2[农业科学—蔬菜学] S626[农业科学—园艺学]