The alluvial soil in the valley is very fertile.

山谷中的冲积土壤非常肥沃。

The three major soil types in this region are the paddy soil, the alluvial soil, and the salt swamp soil.

主要土壤有水稻土、冲积土和滨海盐渍沼泽土（海涂土壤）等三个土类。

The parent material for the two locations is river alluvial soil.

两个地点土壤母质为河流冲积土.

Because the region around New Orleans is composed of alluvial soil, there is no paving material close at hand.

因为临近的都没有可用于铺路的材料，新奥尔良周围的地区都是由淤积土组成的。

Like much of east India, Shahabpur has rich alluvial soil, a gift of the Ganges, which flows three miles to the south.

像印度东部的其地区一样，离作为恒河的恩赐，沙哈伯普尔有非常肥沃的冲积土。