ارزش‌گذاری اقتصادی آب برای مزارع بزرگ و کوچک گندم (مطالعة موردی: شهرستان طبس)

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشیار گروه اقتصاد کشاورزی دانشگاه پیام نور

2 دانش‌آموختة کارشناسی ارشد، دانشگاه پیام نور

چکیده

در این تحقیق، میانگین ارزش تولید نهایی(سایه‌ای)آب در شهرستان طبس در سال زراعی 93-1392 با استفاده از تخمین اقتصادسنجی توابع تولیدکشاورزی برآورد شده­است. اطلاعات مورد نیاز ازطریق تکمیل پرسش‌نامه و نمونه‌گیری تصادفی از 100 گندمکار جمع‌آوری شد. پنج شکل از توابع تولید شاملِ کاب داگلاس، ترانسندنتال، ترانسلوگ، لئونتیف و درجة دوم تعمیم‌یافته با استفاده از داده‌های تحقیق، برآورد شد. میانگین­کشش­تولیدی و تولید­نهایی­آب به ترتیب 56/0و28/0 محاسبه گردید. نتایج نشان­داد که گندمکاران، ­تولید­کنندگان عقلایی هستند. میانگین ارزش اقتصادی آب معادل 2930 ریال برای هر مترمکعب برآورد شد که با بیشترشدن اندازة مزارع افزایش می‏یابد، درحالی‌که گندمکاران درسال زراعی92-1391آب‌بهایی معادل890 ریال بابت هر مترمکعب آب در شبکة­ آبیاری شهرستان طبس پرداخت کرده­ بودند. به­نظر می‌رسد تفاوت در ارزش تولید­نهایی آب با قیمت پرداختی کشاورزان، به عنوان یک عامل مهم، موجب از بین رفتن انگیزة کشاورزان درسرمایه‌گذاری برای افزایش راندمان آبیاری و استفاده از فناوری‌های نوین­آبیاری شده­است. افزایش مناسب قیمت آب‌بها به همراه اجرای یکپارچه‌سازی اراضی از مهم‌ترین پیشنهادهای این تحقیق بوده است.

کلیدواژه‌ها


عنوان مقاله [English]

Economic Valuation of Irrigation Water for Large and Small Farm of Wheat (Case Study: Tabas County)

نویسندگان [English]

  • A. Mahmoodi 1
  • H. Karimi 2
1 . Associate Professor of Agricultural Economics, Payame Noor University
2 .MSc. Student of Agricultural Economics, Payame noor University
چکیده [English]

In this research, the average value of marginal production of water in the Tabas County was estimated in 2013-2014 using econometric estimates of agricultural production functions. Data were collected through a questionnaire and random sampling from 100 wheat producers. Five shapes of production functions including Cobb Douglas, Translog Transcendental, Leontief and generalized second degree were estimated using research data. The average production elasticity and marginal production were calculated to be 0.56 and 0.28, respectively. The results indicate that wheat growers are rational producers. The average economic value of water is estimated at 2930 rials per cubic meter, which increases as the size of the farm increase; while wheat cultivators were paying 890 Rials per cubic meter of water in the irrigation network of Tabas in the 2013-2014 crop years. It seems that the difference in the value of marginal production of water  with the price paid by farmers, as an important factor, has led to the disappearance of the incentive for farmers to raise funds for increasing irrigation efficiency and the use of new irrigation technologies. An appropriate increase in water supply prices along with implementation of land consolidation has been one of the main suggestions of this study.

کلیدواژه‌ها [English]

  • The Economic Value of Irrigation Water
  • Production Functions
  • Wheat
  • Tabas

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