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塑料大棚控制排水系统设计及水管理研究

作  者:
陈林;王修贵;孙怀卫;吴景社;吴伟峰
单  位:
武汉大学水资源与水电工程科学国家重点实验室上海市水利管理处上海市青浦区水利技术推广站;华中科技大学水电与数字化工程学院;武汉大学水资源与水电工程科学国家重点实验室;上海市水利管理处
关键词:
大棚;控制排水;农田水管理;DRAINMOD模型
摘  要:
采用水管理软件DRAINMOD,以SEW30为指标,确定塑料大棚暗管控制排水系统的间距和埋深。然后根据淋洗土壤盐分的需要,选取不同降雨水平年,采用不同的暗管控制排水出口深度及不同的灌水量,共组合成9种方案,以SEW30、土壤0~60 cm土层盐分脱减率、排水量作为评价指标,分析出研究区不同降雨水平年的水管理方案:丰水年以排涝排渍为主,控制出口深度保持约80 cm。不需加大灌水量控制土壤盐分;平水年,控制出口深度保持在50 cm左右,不需加大灌水量可以达到减少排水量并控制渍害的目的;枯水年,控制出口深度维持在50 cm左右,需加大灌水量10%淋洗土壤盐分。
译  名:
Research on Design and Water Management of Controlled Drainage System in Greenhouses
作  者:
CHEN Lin1,WANG Xiu-gui1,SUN Huai-wei1,WU Jing-she2,WU Wei-feng2,YUAN Yong-kun3(1.State Key Laboratory of Water Resources and Hydropower Engineering science,Wuhan University,Wuhan 430072,China;2.Shanghai Water Conseroancy Management,Shanghai 200002,China;3.Qingpu Station for Popularizing Water Conservancy Technique of Shanghai,Shanghai,201707)
关键词:
greenhouses;controlled drainage;water management in farmland;DRAINMOD model
摘  要:
The water management model DRAINMOD is used to design the controlled drainage system according to the standard SEW30 in greenhouse.And then,for typical hydrological year with rainfall frequency of 15%,50% and P=85%,DRAINMOD is used to simulate the groundwater,salt content,SEW30,drainage discharge under 9 water management scenarios that were resulted from different outlet depth of the controlled drainage combined with different additional irrigation water for leaching requirement.The results show that in the year with rich rainfall(P=15%),the controlled drainage outlet depth should be set at about 80 cm,and the additional irrigation water is not necessary;when the average rainfall year(P=50%),outlet depth should be about 50cm,and no additional irrigation water;and outlet depth can also be 50cm when the rainfall is poor(P=85%),but with about 10% additional irrigation for the leaching requirement.

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