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تخمین تابع تولید آب-نیتروژن دانه سویا | ||
| تحقیقات آب و خاک ایران | ||
| مقاله 17، دوره 49، شماره 3، مرداد و شهریور 1397، صفحه 665-672 اصل مقاله (631.52 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2017.239600.667734 | ||
| نویسندگان | ||
| لیدا اسدی1؛ مجتبی خوش روش* 1؛ مسعود پورغلام2؛ عبدالمجید لیاقت3؛ محمدرضا یوری4 | ||
| 1گروه مهندسی آب، دانشکده مهندسی زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری | ||
| 2گروه مهندسی آبیاری و آبادانی، دانشکده مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران | ||
| 3دانشگاه تهران | ||
| 4گروه مهندسی آب، دانشکده مهندسی آب و خاک، دانشگاه علوم کشاورزی و منابع طبیعی گرگان | ||
| چکیده | ||
| با توجه به محدودیت منابع آب، کم‌آبیاری می‌تواند یکی از روش‌های مناسب در این شرایط باشد. هدف این پژوهش بهینه‌سازی مصرف آب و تعیین حد بهینه نیتروژن به‌صورت همزمان می‌باشد. در این پژوهش دو راهبرد کم‌آبیاری 75 (I2)، 50 (I3) و 25 (I4) درصد آب مورد نیاز و آبیاری کامل (I1) و تیمارهای مختلف نیتروژن با کاربرد 150 (N1)، 5/112 (N2) و 75 (N3) کیلوگرم در هکتار مورد استفاده قرار گرفت. بهینه‌سازی آب و نیتروژن نشان داد که از میان توابع تولید خطی ساده، تابع کاب داگلاس، درجه دومو متعالی، تابع تولید مناسب سویا، مدل متعالی می‌باشد. میزان بهینه آب و نیتروژن تحت شرایط تنش آب-نیتروژن برای گیاه سویا در دو سال به ترتیب 230 و 5/216 میلی‌متر آب و 150 کیلوگرم نیتروژن برآورد شد. نتایج نشان داد، تیمار N3 در حالت کم‌آبیاری I2 نسبت به روش آبیاری کامل، 28/33% افزایش تولید داشته است. | ||
| کلیدواژه‌ها | ||
| بهینه‌سازی؛ عملکرد؛ کم‌آبیاری؛ مدل متعالی | ||
| عنوان مقاله [English] | ||
| Estimation of soybean water-nitrogen production function | ||
| نویسندگان [English] | ||
| Lida Asadi1؛ Mojtab Khoshravesh1؛ Masoud PourGholam2؛ Abdolmajid Liaghat3؛ MohammadReza Youri4 | ||
| 1Department of Water engineering, Faculty of Agricultural Engineering, Sari Agricultural Sciences and Natural Resources University | ||
| 2Dept. of Irrigation & Reclamation Eng., Faculty of Agriculture Engineering & Technology, University of Tehran | ||
| 3University of Tehran | ||
| 4Department of Water engineering, Faculty of water & soil Engineering, Agricultural Sciences and Natural Resources of gorgan University | ||
| چکیده [English] | ||
| Due to the limited water resources, the deficit irrigation would be one of the most relevant methods in this situation. The purpose of this study was to optimize the water consumption and nitrogen level simultaneously. In this research, two different irrigation strategies of 75% (I2), 50% (I3) and 25% (I4) of water requirement and full irrigation (I1) and different nitrogen treatments with application of 150 (N1), 112.5 (N2) and 75 (N3) Kg/ha was investigated on yield production. Optimization of water and nitrogen showed that the proper yield function of soybean is the transcendental model among linear, Cobb-Douglas, quadratic and transcendental models. The optimum water and nitrogen levels of soybeans under water-nitrogen stress conditions was estimated 230 and 216.5 mm of water and 150 kg of nitrogen in two years. The results showed that the yield production was increased by 33.28% in N3 with deficit irrigation treatment (I2) as compared with full irrigation method. | ||
| کلیدواژه‌ها [English] | ||
| Optimization, Yield, Deficit irrigation, Transcendental Model | ||
| مراجع | ||
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