读下图回答下面试题 图中a地区农业�展中存在较明显的土壤盐碱化问题其产生的主要原因是 �纬度较高冻土�育含盐水分不易下渗 �气候干旱 Template




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tomski读下图回答下面试题 图中a地区农业�展中存在较明显的土壤盐碱化问题其产生的主要原因是 �纬度较高冻土�育含盐水分不易下渗 coloring