东北的土层厚，腐植土多，山西土层薄，下面就是岩石层，也没有水。

来源: 老生常谈12 于 2020-07-16 12:55:04 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.