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بررسی حجم آب آبیاری ، عملکرد و بهرهوری آب در مزارع پنبه استان خراسان رضوی | ||
| تحقیقات مهندسی سازه های آبیاری و زهکشی | ||
| دوره 25، بهار - شماره پیاپی 94، تیر 1403، صفحه 39-52 اصل مقاله (651.11 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/idser.2024.366301.1584 | ||
| نویسندگان | ||
| محمد جلینی* 1؛ سید ابو القاسم حقایقی مقدم2؛ محمدمهدی نخجوانی مقدم3 | ||
| 1دانشیار پژوهش بخش تحقیقات فنی و مهندسی کشاورزی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان خراسان رضوی، سازمان تحقیقات، آموزش و ترویج کشاورزی، مشهد، ایران. | ||
| 2استادیار پژوهش بخش تحقیقات فنی و مهندسی کشاورزی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان خراسان رضوی، سازمان تحقیقات، آموزش و ترویج کشاورزی، مشهد، ایران. | ||
| 3استادیار پژوهش، مؤسسه تحقیقات فنی و مهندسی کشاورزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران | ||
| چکیده | ||
| هدف از اجرای این پروژه، اندازهگیری حجم آب آبیاری، عملکرد و بهرهوری آب در مزارع پنبه تحت مدیریت کشاورزان در استان خراسان رضوی است. مزارع آزمایشی طوری انتخاب شدند که عوامل مختلف از جمله روش آبیاری، بافت خاک و کیفیت آب آبیاری را پوشش دهند. در کل استان جمعا 51 مزرعه پنبه در شهرستانهای سبزوار، بردسکن، نیشابور، خواف، رشتخوار و سرخس انتخاب شدند. مزارع منتخب در طول سال 1397 مورد پایش زراعی و آبی قرار گرفتند. برداشت اطلاعات مزارع منتخب، از طریق مراجعه حضوری به مزارع، تکمیل پرسشنامه، نمونهبرداری از خاک و منبع آبی مزارع، ثبت برنامه آبیاری و اندازهگیری دبی منبع آب صورت گرفت. نیاز آبی پنبه در مناطق مختلف محاسبه و با میزان آب آبیاری کشاورزان مقایسه شد. نتایج نشان داد که دامنه تغییرات مقدار آب آبیاری در مزارع استان بین 4920 تا 17620 مترمکعب بر هکتار متغیر و متوسط میزان آب آبیاری در مزارع برابر 9830 مترمکعب بر هکتار برآورد گردید. دامنه تغییرات مقدار عملکرد پنبه نیز بین 1000 تا 6300 کیلوگرم بر هکتار متغیر بود و متوسط عملکرد محصول برابر 3078 کیلوگرم بر هکتار بدست آمد. همچنین دامنه تغییرات مقدار بهرهوری آب پنبه بین 0/102 تا 0/957 کیلوگرم بر مترمکعب و متوسط آن برابر با 0/357 کیلوگرم بر مترمکعب محاسبه شد. میانگین بهرهوری آب در دو روش آبیاری سطحی و قطره ای به ترتیب برابر 0/318 و 0/669 کیلوگرم بر مترمکعب بدست آمد که نشان می دهد با تغییر روش آبیاری از سطحی به قطرهای، بهره وری آب در مزارع پنبه استان بیش از 110 درصد قابل افزایش است. | ||
| کلیدواژهها | ||
| مدیریت آبیاری؛ روش های آبیاری؛ آبیاری سطحی؛ آبیاری قطرهای | ||
| عنوان مقاله [English] | ||
| Investigating of the Volume of Irrigation Water, yield and water productivity in cotton fields In Razavi Khorasan province | ||
| نویسندگان [English] | ||
| mohammad Joleini1؛ Abolghasem Haghayeghi2؛ Mohammad Mehdi Nakhjavanimoghaddam3 | ||
| 1Associate Professor, Agricultural Engineering Research Department, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Mashhad, Iran. | ||
| 2Assistant Professor, Agricultural Engineering Research Department, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Mashhad, Iran. | ||
| 3Assistant Professor, Agricultural Engineering Research Institute (AERI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran | ||
| چکیده [English] | ||
| Extended Abstract Introduction Razavi Khorasan province is one of Khorasan provinces in northeastern Iran, the center of this province is Mashhad. The area of this province is 118854 square kilometers. Due to having high evaporation potential and low rainfall, which is mostly associated with inappropriate distribution, this region is among the dry and semi-arid regions of our country, so that water is considered the most important factor limiting the growth and development of agriculture. Nowadays, limitations in water resources has made it necessary to create ways to increase water productivity. This is a proof of the importance of careful planning and finding the use of different irrigation methods to increase the water productivity of agricultural activities. By examining the sources, it was found that the volume of water used in the cotton crop varies in different regions and with different irrigation systems. This research aims to measure the volume of applied water, the yield and productivity of cotton under the management of farmers in Razavi Khorasan province (Bardaskan, Nyshabor, Sabzevar, Khaf, Roshtkhar and Sarakhs cities) and compare the amount of applied water with the water requirement of cotton in these six plains (city) with the national document and It was also calculated by Penman-Monteith method with meteorological data. Methodology This project was carried out in the field in order to determine the useful water of cotton in the fields under the management of farmers during one cropping season (2018). Six cities of Bardaskan, Nyshabor, Sabzevar, Khaf, Roshtkhar and Sarakhs were selected in Razavi Khorasan province, which have the largest area under cotton cultivation. At first, based on the data required by the project, a questionnaire containing necessary information for investigation and logical conclusion was prepared. The required data of the selected farms in each city were either measured or through face-to-face interviews with the farmer or were calculated and completed according to the data of the previous two stages. The measurements were carried out in type of water source, irrigation network and method and water source discharge, total level The field and area under cultivation of cotton crop, variety, planting arrangement, planting date, soil texture, electrical conductivity of irrigation water and soil saturation extract, date of first irrigation, irrigation cycle and different irrigation methods, etc. The Measured Applied water were compared with the net irrigation water requirement estimated by the Penman-Monteith method using the last 10 years meteorological data (2009 to 2018) and also with the national water document values. Crop yield was recorded at the end of the growing season and water productivity was calculated as the ratio of yield to total water (irrigation applied water and effective rainfall). Results and Discussion The results showed that the volume of applied water, the amount of cotton yield and the water productivity in Bardaskan region were 7369 m3/ha, 4583 kg/ha and 0.638 kg/m3, respectively. The amount of applied water, the amount of cotton yield and the water productivity in Nysahabor region were determined as 9773 m3/ha, 3554 kg/ha and 0.528 kg/m3, respectively. The amount of applied water, the amount of cotton yield and the water productivity in Sabzevar region were 9173 m3/ha, 3033 kg/ha and 0.225 kg/m3, respectively. In Khaf region the amount of applied water, the amount of cotton yield and the water productivity were 14791 m3/ha, 2821 kg/ha and 0.194 kg/m3, respectively. The amount of applied water, the amount of cotton yield and the water productivity in Roshtkhar region were 11281 m3/ha, 3466 kg/ha and 0.327 kg/m3, respectively, The amount of applied water, the amount of Cotton yield and the water productivity in Sarakhs region were determined as 9004 m3/ha, 2113 kg/ha and 0.265 kg/m3, respectively. The average amount of applied water, the amount of cotton yield and the water productivity in above six regions were 9830 m3/ha, 3078 kg/ha and 0.357 kg/m3, respectively. Also, the average volume of irrigation water, yield and productivity of water in the surface irrigation method were 10175 m3/ha, 2892 kg/ha and 0.318 kg/m3 respectively, and in the drip irrigation method 7242 m3/ha 4470 kg/ha and 0.649 kg/m3 were obtained. Conclusions In Razavi Khorasan province, underground water sources are facing a reservoir deficit. Therefore, efforts towards better use of extracted water and reducing exploitation of underground water resources are inevitable. In this project, the water given by the farmers for cotton production during one cropping season was measured in the six plains of Bardaskan, Nyshabor, Sabzevar, Khaf, Roshtkhar and Sarakhs cities, without interfering farmer’s irrigation schedule ; these plains had the largest area under cotton cultivation in Razavi Khorasan province. The method of irrigation of the fields was surface and drip irrigation (tape). The results showed that the average volume of water, yield and water productivity in these planes were 9830 cubic meters per hectare, 3078 kg per hectare and 0.357 kg per cubic meter of water, respectively. The difference between the volume of applied water, performance and water efficiency in two methods of surface and drip irrigation was significant. Under the drip irrigation system, comparing surface irrigation method, the volume of applied water was 30% less (7242 cubic meters per hectare versus 10175 cubic meters per hectare), the yield was 55% higher (4470 kg/hectare versus 2892 kg/hectare) and the water productivity was about 104% higher (0.649 kg/cubic meter of water vs. 0/318 kg/cubic meter of water. | ||
| کلیدواژهها [English] | ||
| Irrigation management, Irrigation methods, Surface irrigatin, Drip irrigatin | ||
| مراجع | ||
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