Ultisol, commonly known as red clay soil, is one of twelve soil orders in the United States Department of Agriculture soil taxonomy. The word "Ultisol" is derived from "ultimate", …

ultisol，英语单词，主要用作为名词，用作名词译为“（美国土壤分类学中的）老成土（高度风化和淋溶的一种黄色至红色的土壤）”。

Ustults are the more or less freely drained Ultisols that have an ustic soil moisture regime and have a relatively low content of organic carbon. They occur in the extreme western part of the …

Ultisol, one of the 12 soil orders in the U.S. Soil Taxonomy. Ultisols are reddish, clay-rich, acidic soils that support a mixed forest vegetation prior to cultivation. They are naturally suitable for …

Piedmont Ultisol Landscape, North Carolina — This landscape is typical of the rolling Piedmont region of the southeastern U.S. This region is bordered by the Appalachian Mountains to the …

1997年1月1日 · This chapter presents a brief overview of Ultisols in terms of their genesis, classification, distribution, and properties. The chapter illustrates crop management systems …

Most Ultisols are acid, although some may have a high pH in the surface horizons owing to aerosolic additions of carbonate dust. The ideal Ultisol has a subsurface horizon of clay …

Ultisol soils can be agriculturally productive with inputs of lime and fertilizers. Large areas of Ultisol are found in the southeastern USA, China, Indonesia, South America, and equatorial …

本研究的目的是确定石膏，石灰，熔融钙镁磷酸钙（肥料）（CaMgP）和生物炭对两种类型的红壤（Ultisol）中土壤理化性质的影响。

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