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تعیین میزان آب کاربردی، بهرهوری آب و عملکرد ذرت علوفهای تحت مدیریت کشاورزان استان البرز با استفاده از مدل FAO-AquaCrop | ||
| تحقیقات مهندسی سازه های آبیاری و زهکشی | ||
| دوره 26، شماره 101، دی 1404، صفحه 30-15 اصل مقاله (810.08 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/idser.2026.370370.1627 | ||
| نویسندگان | ||
| صمد حسین زاده اجیرلو* 1؛ بیژن نظری2؛ فریبرز عباسی3؛ افشین خورسند4 | ||
| 1محقق، موسسه تحقیقات فنی و مهندسی کشاورزی، سازمان آموزش و ترویج کشاورزی، کرج، ایران. | ||
| 2دانشیار، گروه مهندسی آبیاری و آبادانی، دانشکدگان کشاورزی و منابع طبیعی دانشگاه تهران و عضو هیئت علمی دانشگاه بین‌المللی امام خمینی (ره)، قزوین، ایران. | ||
| 3استاد، موسسه تحقیقات فنی و مهندسی کشاورزی، سازمان آموزش و ترویج کشاورزی، کرج، ایران | ||
| 4محقق، مؤسسه تحقیقات فنی و مهندسی کشاورزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران | ||
| چکیده | ||
| راهبرد اساسی حل بحران آب کشور، صرفهجویی در مصرف آب کشاورزی از طریق افزایش بهرهوری است. با توجه به اهمیت اقتصادی تولید ذرت علوفهای در کشور، بررسی راهکارهای افزایش بهرهوری آب برای تولید این محصول استراتژیک ضرورت دارد. بهمنظور آگاهی از نوع استفاده از سامانههای آبیاری، ابعاد مزرعه، منابع آبی مزارع، تاریخ کاشت و برداشت، اندازهگیری حجم آب آبیاری، عملکرد محصول تر و بهرهوری آب در مزارع کشت دوم ذرت علوفهای (کشت تابستانه) رقم سینگل کراس 704 در شش مزرعه با سامانههای آبیاری جویچهای و نواری تیپ با مدیریت کشاورزان، این مطالعه در سال زراعی 1395 اجرا گردید. نتایج تحقیق نشان داد که متوسط حجم آب آبیاری در آبیاری جویچهای و نواری تیپ به‌ترتیب ۱۰۶۷۰ و ۴۴۸۰ مترمکعب در هکتار و میانگین عملکرد ذرت علوفهای به‌ترتیب 49/12 و 60 تن در هکتار است. در روش آبیاری جویچه ای، بیشترین عملکرد محصول در مزرعۀ کرج (2) به میزان 60 تن در هکتار و با بهره وری آب آبیاری 6/16 کیلوگرم به ازای هر مترمکعب و کمترین عملکرد محصول برای مزرعۀ کرج (3) به میزان 35 تن در هکتار و کمترین بهره وری آب برای مزرعۀ کرج (1) به میزان 4/24 کیلوگرم بر مترمکعب به دست آمد. بیشترین بهره وری آب آبیاری، 13/40 کیلوگرم به ازای هر مترمکعب آب، مربوط به مزرعۀ حاجی آباد با روش آبیاری نواری تیپ است. میانگین بهره وری آب مصرفی ذرت علوفه ای در آبیاری جویچه ای و نواری تیپ به ترتیب 5/6 و 13/4 کیلوگرم به ازای هر مترمکعب آب تعیین شد. برای برآورد پتانسیل عملکرد محصول ذرت علوفه ای از مدل AquaCrop استفاده شد. این مدل پیش از استفاده واسنجی و صحتسنجی گردید و قابل اتکا بودن نتایج آن در منطقۀ مورد مطالعه تأیید شد. خطای نسبی این مدل 3/7 درصد و ریشۀ میانگین مربعات خطا 2/44 تن در هکتار به دست آمد. این نتایج بیانگر قابلیت مدل در برآورد پتانسیل عملکرد و بهرهوری آب تحت شرایط واقعی مزرعه است و روش آبیاری نواری تیپ به‌عنوان گزینه‌ای کارآمد برای استفادۀ بهینه از منابع آبی منطقه توصیه می‌شود. | ||
| کلیدواژه‌ها | ||
| آبیاری نواری تیپ؛ آبیاری جویچه ای؛ بهره وری آب؛ پتانسیل عملکرد محصول؛ مدیریت مصرف آب | ||
| عنوان مقاله [English] | ||
| Determining the Amount of Applied Water, Water Productivity, and Yield of Forage Maize under Farmers’ Management in Alborz Province Using the FAO-AquaCrop Model | ||
| نویسندگان [English] | ||
| Samad Hosseinzadeh Ajirlou1؛ Bijan Nazari2؛ fariborz abbasi3؛ Afshin Khorsand4 | ||
| 1Researcher, Agricultural Engineering Research Institute (AERI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran. | ||
| 2Associate Professor of the Department of Irrigation and Development Engineering, Faculty of Agriculture and Natural Resources, University of Tehran & Faculty member of Imam Khomeini International University, Qazvin, Iran, Qazvin, Iran. | ||
| 3Professor, Agricultural Engineering Research Institute (AERI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran. | ||
| 4Researcher, Agricultural Engineering Research Institute (AERI), Agricultural Research, Education and Extension | ||
| چکیده [English] | ||
| Extend Abstract Intouduction Water scarcity is one of the biggest challenges facing the agricultural sector in many parts of Iran, especially in arid and semi-arid regions. Increasing agricultural water productivity is not only a solution, but also an absolute necessity. Although solutions such as increasing the area under cultivation and increasing yield per unit area, optimizing agricultural inputs, controlling population and optimizing consumption, and increasing imports have been proposed to address the challenge of food security, each of these cases has its own implementation limits (Nouri et al., 2023; Garofalo et al., 2025). Crop models are considered a valuable tool for the integrated simulation of processes affecting crop growth and for the evaluation of crop management options (Mabhaudhi et al., 2014; Wallach et al., 2019). Crop models that can accurately estimate various parameters of crop growth, soil water dynamics, crop water use and expected yield under different irrigation levels can also be a fundamental aid for the successful implementation of irrigation management practises with limited and full irrigation (Sandhu & Irmak, 2019). Therefore, the aim of this study was to calibrate and then evaluate the AquaCrop model to simulate the yield and water productivity of forage maize under furrow and tape irrigation in the arid and semi-arid regions of Iran (Alborz province). In addition, the ability of the model to simulate the yield potential of forage maize under agricultural management in the study fields was evaluated. Methodology The data required for this study was collected in 2016 on farms in the province of Alborz. The farms were visited in coordination with the management of the Agricultural Jihad and were examined and selected taking into account the parameters required for the study. Three farms were selected in the city of Karaj, one in the Seifabad district, one in the city of Hashtgerd and one in the village of Haji Abad. The farm in Karaj was divided into three different sections due to its larger area, different cultivation dates and different irrigation schedules. Since understanding the current situation is one of the most fundamental planning steps for evaluating and providing solutions to improve any system, this study was conducted in the form of field experiments and field farms with the aim of investigating and estimating the current status of irrigation water productivity under farmers' management, and the potential for growing forage maize in Alborz province. Water resources, the cultivated area, total irrigated land area, soil texture, soil salinity, and irrigation water salinity in each farm were investigated and measured. Additionally, some farm characteristics such as area, precise GPS location, irrigation method, irrigation water source, timing of water withdrawal and variations in withdrawal flow rate throughout the year, network type, and operator characteristics were recorded using compiled information recording forms. Results and discussion The results for the average yield of fresh forage corn were 49.12 tons per hectare using furrow irrigation method and 60 tons per hectare using tape irrigation method. In furrow irrigation, the highest fresh crop yield was obtained at Karaj farm (2) with 60 tons per hectare and an irrigation water productivity of 6.61 kg/m³. The lowest yield was recorded at Karaj farm (3) with 35 tons per hectare, while the lowest irrigation water productivity was at Karaj farm (1) with 4.24 kg m-³. The highest irrigation water productivity, 13.4 kg m-³, was observed at Hajiabad farm using tape irrigation. Therefore, tape irrigation is recommended for optimal water resource utilization. The study also showed that the RMSE index was 2.44 tons per hectare, and the d-agreement index was 0.947, indicating the AquaCrop model's ability to simulate corn fresh weight accurately in the study area. There was a strong correlation between simulated and measured crop yield values, with a coefficient of determination of approximately 0.95. The relative error (RE) was 3.7%, which is considered acceptable. Conclusion The results demonstrated that the AquaCrop model has a strong capability to analyze various management scenarios, predict performance under water-limited conditions, and optimize irrigation patterns. From a management perspective, the findings suggest that agricultural policies should shift focus from the "land productivity" index to the "water productivity" index. Additionally, providing practical training for farmers, promoting modern irrigation technologies, and utilizing simulation models like AquaCrop can play a crucial role in reducing water waste, enhancing crop yield, and ensuring sustainable production. Ultimately, implementing these strategies will not only improve water productivity but also serve as an effective step toward protecting water and soil resources and ensuring long-term food security. | ||
| کلیدواژه‌ها [English] | ||
| Crop yield potential, Furrow irrigation, Tape irrigation, Water productivity, Water use management | ||
| مراجع | ||
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