نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه زراعت و اصلاح نباتات، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران.
2 استادیار بخش تحقیقات مدیریت منابع، مؤسسه تحقیقات کشاورزی دیم کشور، سازمان تحقیقات آموزش و ترویج کشاورزی، مراغه، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Nowadays sustainable production of agricultural products to ensure food security is among the goals and macro policies, Therefore, attention to energy flows, economic indicators and environmental issues is inevitable. Therefore, the present research was carried out in the years 2021 and 2022 with the aim of investigating energy indicators, greenhouse gas emissions and economic indicators on two plants, alfalfa (Medicago sativa L.) and corn silage (Zea mays L.), which play an important role in providing fodder for livestock in Alborz province cities. The desired data was obtained from interviews with farmers and completing questionnaires for each plant. Results showed that the highest energy input, output and net energy in alfalfa were 61964.1, 271760 and 209795.9 Mj.ha-1, respectively, Also, for corn, the highest input, output and net energy were 35330, 240120 and 204790 Mj.ha-1 respectively. The highest efficiency of energy consumption in alfalfa and corn was obtained 4.38 and 6.8 respectively. Among the different inputs, diesel, nitrogen chemical fertilizer and irrigation water had the largest share in the energy input. The comparison between alfalfa and corn in terms of global warming showed that alfalfa plants with the production of 3097.6 kg of CO2 per hectare had a greater role in global warming than corn plants with the production of 1879.7 kg of CO2 per hectare that three factors, diesel, chemical fertilizer and electricity have played the most important role on this.
کلیدواژه‌ها [English]
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