Based on data of agricultural drought situation and sown area of main crops in each county or district of the Sichuan Basin,the spatial distribution and probability of agricultural drought risk at different risk levels were studied using normal information diffusion method,and the risk zoning was carried out. The results showed that normal information diffusion method could fit the distribution of agricultural drought risk in the Sichuan Basin. By comparison with the end of the 20thcentury,agricultural drought risk in Meishan,Chongqing City and so on increased at the beginning of the21stcentury when xi≥10% or xi≥40%. Agricultural drought risk waslow in the west of the Sichuan Basin,which was related to rich precipitation here,but it was high in Bazhong,Zhongjiang,Luxian and so forth. The risk zoning results can provide scientific references for disaster prevention and emergency management of government.
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