نوع مقاله : مقاله پژوهشی
نویسندگان
گروه اقتصاد کشاورزی دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background and Objective:The purpose of this study is to investigate the consumption trend and calculate the energy efficiency indicators in the cereals production (wheat, barley, rice and corn).
Materials and Methods:The data used in the research is related to the period of 2000-2020, which was prepared from the Ministry of Agricultural Jihad and the Statistics Center of Iran. In this research, four important cereals products including wheat, barley, corn and rice were considered, which in total include about 70% of the total area of agricultural lands in Iran. Results: According to the results, the energy of all inputs except chemical poisons has increased in the mentioned period. Chemical fertilizer showed a decreasing trend during the period of 2000-2010, but increased again during the period of 2010-2020. Chemical fertilizer has taken the largest share of the total input energy, so that its growth rate was 28.3% in the period of 2000-2020.
Conclusion: The trend of energy ratio (output to input) in the production of major cereal products during the studied period had an increasing trend. So that the average growth of the total energy ratio in the mentioned products was 1.87% in the period under review. The regression coefficient of indirect energy and non-renewable energy was significant at the level of 5%, which shows that the grain yield increases with the increase in the consumption of this type of energy.
کلیدواژهها [English]
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