Analysis of the Structure and Savings of the Potato Production Scale Using the Translog Cost Function (Ardabil County)
محورهای موضوعی : Environmental policy and managementجلال خیرخواه مقدم 1 , ابوالفضل محمودی 2 , غلامرضا یاوری 3 , امین دلاور 4
1 - دانشگاه اردبیل
2 - دانشگاه پیام نور
3 - دانشگاه پیام نور
4 - دانشگاه پیام نور
کلید واژه: Ardabil City, Translog Cost Function, Potato, Scale savings, Cost elasticity,
چکیده مقاله :
The present study aimed at investigating the production costs and economic benefits of the potato production in Ardabil country, Iran. To do so, 183 potato producers were randomly selected and were asked to present their ideas concerning the production costs and benefits through a questionnaire and an interview. A field study was also taken into consideration to enrich the data. The collected data were analyzed through measures of Chi-square, Wald test, and Translog cost function. The results revealed that the cost function structure was non-hemotetic with respect to the Chi-square statistics (36.8) and results of the constant non-returns and non-homogeneous Wald test to the scale’s F- statistics (17.04) were non-cobb Douglas. Allen cross replacement relationship was positive for the dichotomies such as workforce and machinery, machine and seed, workforce and seed, workforce and water, and finally seed and water. However, it was negative for machinery and land inputs, machinery and water, land and machinery, land and labor force, land and seeds, and land and water. The calculated cost elasticity was -1.5044 which indicated a decrease in the average costs for an output increase as the production cost was found in the downstream part of the cost curve. The economies of scale of 2.504 indicated a 2.5 percent increase in the yield for one-percent increase in the cost.
چکیدهاین تحقفیق با هدف بررسی هزینه‌های تولید و صرفه‌های اقتصادی این محصول در شهرستان اردبیل انجام گرفته است. جامعه آماری این پژوهش 183 سیب زمینی کار می‌باشند که به روش نمونهگیری تصادفی انتخاب شده و اطلاعات به صورت پیمایشی و از طریق تکمیل پرسشنامه جمعآوری شده است. نتایج تحقیق نشان داد: ساختار تابع هزینه با توجه به آماره‌ی کای اسکویر بدست آمده (36.8) غیر هموتتیک، نتایج آزمون ولد غیر بازده ثابت نسبت به مقیاس و آماره F بدست آمده(17.04) غیر کاب داگلاس می‌باشد. رابطه جانشینی متقاطع آلن برای ماشین آلات نیروی کار، ماشین آلات و بذر، نیروی کار و بذر، نیروی کار و آب، بذر و آب، مثبت، برای نهاده‌های ماشین آلات و زمین، ماشین آلات و آب، زمین و ماشین آلات ، زمین و نیروی کار، زمین وّ بذر، زمین و آب منفی بود. کشش هزینه 5044.1- است. که نشان دهنده‌ی کاهش هزینه متوسط به ازای افزایش تولید بوده و تولید در قسمت نزولی منحنی هزینه واقع شده است. صرفه حاصل از مقیاس برابر با2.504که حاکی از افزایش 2.5 درصدی محصول وستانده به ازای افزایش یک در صدی هزینه می‌باشد.
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