آذربايجان شرقي و تاثير آن بر محيط زيست )TRITICUM AESTIRUML( ارزيابي بيلان انرژي در مزارع تكثير بذر ارقام ديم گندم

Assessment of Energy Balance in East Azarbaijanʹs Seed Propagation Fields of Dry Land Wheat Varieties ( Triticum aestivum L.) and its Effect on Environment

One of the ways of estimation the agricultural development and production stability in agricultural regions is making use of the energy circulation method. For this reason, in year 2000-2001, seed propagation fields of dry land wheat varieties were studied as an index for this echological issue .To assess energy balance in these fields. all the data consisting inputs and outputs, converted into amounts equivalent to consumed and produced energies and then energy efficiency was calculated. In these fields the amount of energy for inputs and agents, were 6491 589.E kcal/ha, and output or produced energy, consisted of seed yield and. straw yield, were calculated as 2751 thousands kcal/ha and 2 766 thousands kcal/ha. Also the amount of energy efficiency (output/input) for biological yield (seed ± straw) was calculated 0.78$. The amount of energy efficiency for seed and straw yield are 0.424 and 0.364, respectively. The data indicated that the highest consumed energy in these fields were related to nitrogen fertilizer, machinery consumed energy and gas soil fuel, respectively and the lowest belonged to human force. This could be attributed to climate conditions, topography and even particular subjects related to regional population and culture. The results indicated that in addition to a very high vast of energy in seed propagation fields of dry land wheat varieties in East Azerbaijan, continuing the existing conditions will pollute seriously the soil and water resources of these lands.