干旱地区农业研究Issue(3)：76-82,7.
干旱区不同地下水埋深膜下滴灌灌溉制度模拟研究
Research on irrigation schedule of cotton drip irrigation under plastic film based on the different ground water table in arid areas
摘要
Abstract
Through the irrigation schedule experiment of drip irrigation cotton under plastic film in Korla Irrigation Experiment Station ,Xinjiang ,has obtained the suitable local conventional drip irrigation schedule .In order to further study the compensation effect of shallow groundwater to the irrigation ,we use the Hydrus software to simulate the water consumption in growing stage of drip irrigation cotton under plastic film with different groundwater table .Through dwaw-ing into the concept of key point soil water content ,put forward the criterion of cotton water stress by the drip irrigation under plastic film .The results showed that :The ground water has a certain compensating function for the cotton water consumption ,the shallower groundwater table ,the smaller irrigation quota required .When the groundwater table was less than 1 .5 m ,the drip irrigation quota was 3300 m3·hm-2 .When the groundwater table was 2 .0 m ,the drip irrigation quota was 4500 m3·hm-2 .When the groundwater table was so biger and no any compensation ,the cotton growth totally rely on the drip irrigation ,the drip irrigation quota was 5550 m3·hm-2 .Consided the high evaporation potential in the arid area ,it will cause the soil salinity to damage crop growth ,the ground water table of 1 .5 m to 3 .0 m was the desired depth .This conclusion is not only the complementary and improvement to the conventional cotton irrigation schedule ,but also this proposed method will have the guide and reference role for management and establishing the crop consumption quota of drip irrigation under plastic film in arid area .关键词
膜下滴灌/棉花/灌溉定额/地下水埋深/模拟/HydrusKey words
drip irrigation under plastic film/cotton/irrigation quota/depth of groundwater table/simulation/hydrus分类
农业科技引用本文复制引用
杨鹏年,吴彬,王水献,董新光,刘磊..干旱区不同地下水埋深膜下滴灌灌溉制度模拟研究[J].干旱地区农业研究,2014,(3):76-82,7.基金项目
水利部公益性行业科研专项（201301102）；新疆维吾尔自治区“十二五”重大科技专项（201130103-3）；新疆维吾尔自治区水文学及水资源重点学科基金 （）
