◎ 表土 biǎotǔ
(1) [surface soil]∶指通常耕作的那部分土壤
(2) [topsoil]∶区别于底土的表层土壤,通常包括平均一犁深度的土壤

1.{农} topsoil; surface soil; capping; capping mass; atteration; uncallow; kelly; epipedon