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《Journal of Irrigation and Drainage》 2015-08
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Water Requirement Calculation Model of Tomato with Drip Irrigation under Mulch in Sunlight Greenhouse Based on Water Surface Evaporation Method

GE Jiankun;LI Jia;LUO Jinyao;North China University of Water Resources and Electric Power;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University;  
Through field experiments,actual water requirement of tomato and water surface evaporation in sunlight greenhouse were measured respectively by the Time Domain Reflectometry and two kinds of evaporating dish(E601and 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 D15.6and E601 evaporating dishes,respectively.It is recommended that crop water requirement should be estimated by the evaporation of D15.6dish.
【Fund】: 国家自然科学基金项目(50979077);; 郑州市普通科技攻关项目(20130924)
【CateGory Index】: S641.2;S626
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