色调均匀，暗红或黑色，分布于河岸处，形状规则。

红或深绿色，有纹理结构和明显的灌渠，形状规则，分布于河谷、河流两岸冲积平原。

-uniform colors, or black dishes, distributed in the bank, the shape of the rules. Red or dark green, texture and structure of the irrigation channels clear shapes and distribution in the valley, rivers alluvial plain.