Potential Climatic Zoning Of Dry Farming Of Wheat In North Khorasan Province

Climatic factors have important roles in agricultural production and North Khorasan Province has Potential for dry farming, so this article is about climatic zoning suitable for dry farming of wheat in this area. For this purpose long-term statistical data of 17 rain gauge (pluviometer) climatology and synoptic stations, 5 evapo-transpiration stations, and 6 synoptic stations out of the Province are used for more over lapping. The parameters that are used in this study are as follow: The probability of precipitation annual 300 millimeters and more, autumn and spring precipitation, suitable temperature for sprout, temperatural tension during blossom. Then using suitable climatic conditions for wheat, data layers supplied and classified and by overlaying of maps in GIS, final layout map supplied that shows potential climatic zoning for dry farming of wheat in North Khorasan Province. This map shows that the main suitable regions for dry farming of wheat are located in north part of the Province and unsuitable regions are located in southwest and southeast. This research shows that using GIS it is possible to recognize suitable zones of dry farming of wheat too.