پديد آورنده :
طباطبايي، مهسا سادات
عنوان :
بررسي عملكرد و بهره وري مصرف آب و نيتروژن ذرت علوف هاي تحت مديريت آبياري قطره اي -نواري
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
آبياري و زهكشي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
يازده، ۷۴ص.: مصور، جدول، نمودار
استاد راهنما :
مهدي قيصري، جهانگير عابدي
استاد مشاور :
اسماعيل لندي
توصيفگر ها :
كم آبياري , آبياري قطرهاي - نواري , كود نيتروژن , عملكرد زيتوده ذرت , كارآيي مصرف آب
استاد داور :
محمد شايان نژاد، محمدرضا مصدقي
تاريخ ورود اطلاعات :
1396/10/10
چكيده انگليسي :
September 19 2017 Department of Water Engineering College of Agriculture Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiSupervisor Mahdi Gheysari Gheysari@cc iut ac ir Jahangir Abedi Kupai koupai@ cc iut ac irAbstractApplication of drip tape irrigation systems is highly important for managing water consumption andincreasing of water use efficiency and nitrogen use efficiency in term of environmental and economicjustifications The purpose of this study was to investigate the interaction of water and nitrogen fertilizeron total biomass TB water use efficiency WUE irrigation water use efficiency IWUE of silage maizeunder drip tape irrigation system Four irrigation levels including two deficit irrigation levels W1 0 86ETc W2 0 93ETc a full irrigation level W3 ETc and an over irrigation level W4 1 06ETc and three nitrogen fertilizer levels including no nitrogen fertilizer N0 150 kg N ha 1 N150 and 200 kgN ha 1 N200 were considered The twelve experimental treatments arranged in a strip plot design withcomplete randomized blocks with three replicates The statistical analysis was performed using SASsoftware The studied indices were stem height and diameter leaf area index and total biomass duringgrowth period Irrigation management was performed based on the calculation of maize evapotranspirationby using FAO Penman Monteith FPM equation and soil moisture measurement in the root depth beforeeach irrigation The result showed that there were a significant effect of irrigation on total biomass andIWUE P 0 05 There were a significant effect of nitrogen on TB and WUE P 0 01 The minimumTB obtained for W1N0 treatment 14537 kg ha and the maximum TB obtained for W4N200 treatment 27893 kg ha The minimum WUE for total biomass was 3 09 kg m3 for W2 level and maximum was 3 57kg m3 for W4 level Overall TB and IWUE increased with increasing nitrogen The applied water depthwas 585 633 678 and 719 mm for W1 W2 W3 and W4 levels respectively Comparison of the resultsof this study with similar studies under sprinkler irrigation system showed that applied water for drip tapeirrigation system was 20 5 lower and total biomass was 20 2 higher than sprinkler irrigation system Also maize evapotranspiration and total biomass for drip tape irrigation system were 12 17 58 75 mm and 20 27 3312 7 higher than sprinkler irrigation system respectively The WUE and IWUE of TB ofsilage maize in drip tape irrigation system were 1 05 and 1 73 times higher than sprinkle irrigation system In general the results showed that drip tape irrigation system through increasing irrigation efficiency anddecrease of soil surface evaporation would save water consumption and increase the water use efficiencyand yield production Keywords Deficit irrigation Sprinkle irrigation Evaporation loss Water use efficiency Fertigation
استاد راهنما :
مهدي قيصري، جهانگير عابدي
استاد مشاور :
اسماعيل لندي
استاد داور :
محمد شايان نژاد، محمدرضا مصدقي
