棕土
- 网络umber;Raw umber
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加热棕土制成的深棕色颜料。
Dark brown pigment obtained by heating umber .
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太白山北坡垂直带土壤发生特性与分类&腐棕土
Soil Genesis Characteristics and Classification of Vertical Zone on the Northern Slope of the Taibei Moutains
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雨量坡度及作物对于四川紫棕土冲蚀之影响
A Study on Rainfall , Slope , and Crop in Relation to Erosion of the Purple Brown Soil of Szechuan