Abstract:

This study considered frost-free period and active accumulated temperature as the heat index of the climatic regionalization of grape in Gansu Province，and the dryness index in the grape growth season as the moisture index，buried line as an auxiliary index，to establish the multivariate stepwise regression model of the frost-free period and active accumulated temperature on the basic of the meteorological data of 80 stations during the past 30 years（from 1981 to 2010）and the digital elevation model（DEM）with the resolution of 3"（90 meter） in Gansu Province，and divided the province into 3 zones for each one we established the multivariate stepwise regression model of dryness index，made residual interpolation correction for each spatial regression models with different index，the climatic regionalization map of grape in Gansu Province was produced on this basis，the suitable cultivation area for Eurasian grape in Gansu Province was divided into 4 districts and 11 sub-districts. The mountain grape cultivation area was divided into ordinary cultivation area and suitable cultivation area，opinions and suggestions for grape cultivation in different regions were also put forward according to the different regional characteristics.

Key words: grape, Gansu, climatic regionalization, DEM