70.限制该地所在农业生产基地�展的重大生态问题是 A.草场退化和土地沙化b.干旱缺水和低洼易涝 c.水土流失和土壤酸化d.�土流失和 Template




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tomski70.限制该地所在农业生产基地�展的重大生态问题是 a.草场退化和土地沙化b.干旱缺水和低洼易涝 c.水土流失和土壤酸化d.�土流失和 coloring