中文摘要：

根据偏离-份额分析法（SSA）,采用1978—2013年的我国五大苹果主产区面板数据,对我国苹果生产布局＂西移北扩＂变迁现象的原因进行分析。结果表明：改革开放35年来,我国苹果生产布局＂西移北扩＂现象的原因主要来自于我国果业种植生产布局变迁的空间结构效应。同时各省（市）苹果种植内生的竞争效应也在一定程度上影响了我国苹果生产布局＂西移北扩＂,但其影响程度小于我国果业种植的生产布局变迁。

英文摘要：

According to SSA method,using the panel data of China＇s five major apple producing areas from 1978 to 2013.Analyzed the causes for the‘expanding westward and northward＇phenomenon of apple＇s production layout in China.The results showed that the trend change of citrus planting increase or decrease in five major production areas was the main reason of the above phenomenon.And apple cultivation endogenous competition effect in the five major production areas was also as a secondary factor,lead to China＇s apple distribution change‘expanding westward and northward＇phenomenon to a certain extent.