Zoning of Canola Cultivation Based on Climatic Temperature Needs Using of GIS in Golestan Province

Abstract

Studying of climatic elements are one of the most important factors influencing on agricultural crops production and developing of agriculture activities in every region that led to increasing production . by studying of agro climatology can be determined potential facilities in different areas and used optimum of facilities . this research was established by determining temperature potential of ecological capacity of canola cultivation areas in Golestan province . climatic grouping by Dumartin method, was established to general determine of region climate by using of suitable cultivation temperature( 15-20°c) and Vibul method ( 75% probability )is determined cultivation date . based on measuring of effective required day degree in every steps , is measured given date to phenology step .suitable and limited temperatures different steps of canola phenology is derived from different sources and measured its occurrence probability in studied region . medium relation ship of canola performance and suitable and limited temperatures was studied in different steps of phenology . after organizing and forming of temperature layers using of regression equations , the cultivation regions are divided in to four areas , very desirable , desirable , rather desirable and undesirable .