(1)分析A地寒潮发生的年平均次数多于B地的主要原因。 _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ (2)简述C地苹果单产和质量优于A地的气候条件及其成因。 _________________________________________________________________________________________ _________________________________________________________________________________________ (3)说明图示地区农业生产自然条件及类型的区域差异。 _________________________________________________________________________________________ _________________________________________________________________________________________ |