Abstract: Based on the meteorological data from 1951 to 2000 and research achievements on alfalfa (Medicago sativa L.), the climate division for alfalfa planting in Nanping City was made and the different zones were assessed. The local topography was considered in the division by using spatial analysis and multiple overlapping methods based on GIS combining the information of alfalfa growth with expert knowledge. The results provided scientific basis for the adjustment of agricultural structure.

Key words: Alfalfa (Medicago sativa L.), Alfalfa (Medicago sativa L.), GIS, Climate division