层层梯田环绕的红瑶村寨(左图)和干栏式民居(下图)。瑶族原来是南蛮系的山地民族,有红瑶、青瑶、过山瑶、白裤瑶等诸多分支,不同分支之间在水稻文化的发达程度上存在很大差异。红瑶在诸多瑶族支系中较早接受水稻文化,生产力水平较高,他们在海拔1000米以上的梯田种植传统的红米,在低海拔的梯田则种植产量较高的杂交 Hongyao Village (left) and dry-column houses (layers below) surrounded by terraced rice fields. The Yao ethnic group was originally a mountainous ethnic group of the southern Manchurian ethnic group. There are many branches such as Hongyao, Qingyao, Huashanyao, Baikuyao and so on. There are great differences among different branches in the degree of developed rice culture. In many ethnic Yao clan families, Yao received earlier rice culture and had higher productivity. They planted traditional red rice on terraced fields of over 1,000 meters above sea level, while those on lower terraced fields planted higher yield hybrids