تاثیر سطوح مختلف آبیاری با پساب تصفیه شده شهری بر عملکرد و کارآیی مصرف آب ذرت در منطقه پاکدشت

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه مهندسی آب-پردیس ابوریحان - دانشگاه تهران

2 دانشگاه تهران-پردیس ابوریحان-گروه مهندسی آب

3 استادیار گروه زراعت پردیس ابوریحان دانشگاه تهران

4 دانشیار گروه مهندسی آبیاری و زهکشی- پردیس ابوریحان

چکیده

تحقیق حاضر با هدف بررسی تأثیر آبیاری با پساب تصفیه‌شده شهری بر عملکرد، اجزای عملکرد و کارآیی مصرف آب ذرت دانه­ای رقم سینگل کراس 704، در سال زراعی 97-1396 و در مزرعه تحقیقاتی پردیس ابوریحان دانشگاه تهران واقع در شهرستان پاکدشت انجام گرفت. آزمایش به صورت کرت‌های خرد شده در قالب طرح بلوک کامل تصادفی با فاکتور اصلی (نوع آب) و فاکتور فرعی (سطوح کم­آبیاری) در سه تکرار انجام شد. تیمارهای نوع آبیاری شامل آب چاه ([1]FW) و پساب (W[2]) بودند که در سه سطح 100 (D1)، 75 (D2) و 55 (D3) درصد نیاز آبی گیاه ذرت اعمال گردیدند. نتایج نشان داد که نوع آب کاربردی باعث ایجاد تفاوت معنی‌داری در مقدار عملکرد ماده خشک گردید و بیشترین عملکرد ماده خشک در تیمار پساب با مقدار 18/20904 کیلوگرم در هکتار و کم‌ترین مقدار در تیمار آب چاه با مقدار 15/17231 کیلوگرم در هکتار به دست آمد. از لحاظ مقادیر مختلف آب، تیمار D1 (100%) با 52/3 کیلوگرم ماده خشک بر متر مکعب بیشترین کارآیی مصرف آب و تیمار D2 (75%) و D3 (55%) به ترتیب با 46/3 و 44/3 کیلوگرم بر متر مکعب کمترین کارآیی مصرف آب را داشتند. نتایج تجزیه واریانس نشان داد که آبیاری با پساب تصفیه‌شده شهری، تأثیر معنی‌داری بر صفات عملکرد ماده خشک، طول بلال و همچنین کارآیی مصرف آب براساس عملکرد ماده خشک داشت. بنابراین می­توان پساب تصفیه‌شده در سطح 75 درصد نیاز آبی در منطقه پاکدشت را به عنوان یک راهکار مدیریتی برای آبیاری پیشنهاد نمود.



[1]. Fresh Water


[2]. Wastewater
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The Effect of Different Irrigation Levels with Urban Treated Wastewater on Yield and Water Use Efficiency of Corn in Pakdasht Region

نویسندگان [English]

  • azra karami 1
  • Seyyed Ebrahim Hashemi Garmdareh 2
  • majid Ghorbani Javid 3
  • maryam varavipour 4
1 Irrigation and drainage student, Aburaihan campus, University of Tehran
2 Irrigation and Drainage Dep., Aburaihan Campus - University Of tehran
3 Assistant professor of Agronomy department, Aboureihan College, University of Tehran
4 Associated professor of Irrigation and drainage Dep., Aburaihan campus, University of Tehran
چکیده [English]

The purpose of this study was to investigate the effect of irrigation with urban treated wastewater on yield, yield components and water use efficiency of maize (Single cultivar 704) at the research field of Aburaihan Campus, University of Tehran in Pakdasht during the year of 2017. The experiment was carried out as split plots and based on the randomized completely block design with main factor (type of irrigation water) and sub factor (three levels of water requirement) with three replications. Type of Irrigation treatments included well water and treated wastewater that were used in three levels of water requirement including 100 (D1), 75 (D2) and 55 (D3) percent of maize water requirement. The results showed that the type of applied water caused a significant difference in dry matter, so that the highest yield (2090.18 kg/ha) was obtained in wastewater treatment and the lowest yield (17231/15 kg/ha) was obtained in well water treatment. In terms of different amounts of water, the highest water use efficiency based on dry matter (3.52 kg/m3) was obtained by D1 treatment (100%) and the lowest ones (3.46 and 3.44 kg/m3) were obtained by D2 (75%) and D3 (55%) treatments, respectively. Analysis of variance showed that irrigation with urban treated wastewater had a significant effect on dry matter yield, ear length and water use efficiency based on dry matter. Therefore, the refined wastewater at level of 75% water requirement can be suggested as a suitable irrigation practice for corn in Pakdasht area.

کلیدواژه‌ها [English]

  • Refined wastewater
  • Low irrigation levels
  • maize
  • Water use efficiency
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