This study analyzes inputs use and energy balance in wheat production farms in Iran in 2013. In the present study, 10 wheat (Triticum aestivum L.) fields were selected from east and west of Sari, Mazandaran province, Iran in 2013. During three consecutive growing seasons, data were gathered on energy use in all production practices. Then, all the energy uses were classified into eight categories, i.e. seed bed preparation, plant protection, weed control, irrigation, harvesting and transportation to the storage places. Results indicated that average input energy was 14597.76 MJ/ha. In use inputs nitrogen fertilizer was the highest input energy equal to 5157.06 MJ/ha that was 35.33%. From total input energy, indirect energy with average 11245.69 MJ/ha and direct energy with average of 3351.26 MJ/ha. The most grain yield was performance in 8 number farm (4700 kg/ha). Mean average of output energy for grain was equal to 62842.5 MJ/ha. Average mean of energy productivity in 10 wheat farms was 0.29 kg/MJ. The highest energy productivity equal to 0.32 kg/MJ that observed in number of 9 and 10 farms. Mean of specific energy in wheat production was 3.42 MJ/kg that the highest rate of that equal to 3.65 MJ/kg was performance in 4 number farms. Average of net energy in 10 wheat farms was 96067.24 MJ/ha. Therefore, farms number of 9 and 10 had the highest productivity.
کلید واژگان :Energy, Environment, Productivity, Wheat
ارزش ریالی : 600000 ریال
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