Abstract: Based on the meteorological data and geographic information during the growth period of oilseed rape at 96 weather stations from 1981 to 2010 in Shaanxi province, by using GIS technology, authors built the climatic division for oilseed rape in order to provide scientific basis for sustainable development. Firstly, through the comprehensive analysis of climate suitability characteristics and key influential climate factor on oilseed rape yield, some factors such as mean daily minimum air temperature in January,air temperature at stem elongation period,air temperature at whole growth period ≥0℃ accumulative temperature at whole growth period,and precipitation during the whole growth period were selected as the climatic regionalization indices. Next, small grid reckon model was established to calculate the spatial distribution without station in Shaanxi province of each regionalization index values of 100m×100m grid node. Thus, the distribution graph of the eco climate suitable planting areas of oilseed rape was formed by using comprehensive evaluation method. The results indicated that the most suitable regions for oilseed rape plant distributed around flat and dam areas below 600m along Hanjiang river and its tributaries in southern Shaanxi, and the plain areas below 700m along Weihe river and its tributaries in central Shaanxi. The suitable regions were the surroundings, including valley and shallow mountain areas below 850m in the northern piedmont of Qinling, hilly country area below 750m in the southern hillside of Qinling and northern foot of Bashan mountain, and loess tableland area below 800m at the northern bank of Weihe river.

Key words: Oilseed rape;, Eco climate, Suitability, GIS, Zoning