V2EX subsoil

Subsoil

释义 Definition

subsoil(底土;下层土):位于表土(topsoil)之下的土层,通常有机质较少、更致密,含有从上层淋溶下来的矿物质与黏土等,影响植物根系、生长与排水。

发音 Pronunciation (IPA)

/sb.sl/

例句 Examples

The subsoil is too compact for carrots to grow well.
这片底土太板结,胡萝卜很难长好。

After years of heavy rain, minerals leached from the topsoil and accumulated in the subsoil, changing the field’s drainage.
多年强降雨后,矿物质从表土被淋洗下移并在底土中积累,改变了这块田地的排水状况。

词源 Etymology

sub- 表示“在……下面”,soil 表示“土壤”。合起来字面意思就是“下面的土”。该词常用于土壤学、农业与环境科学语境,用来区分表层可耕作的土与更深层的土体结构。

相关词 Related Words

文学作品 Literary Works

  • George Eliot, Middlemarch:作品中多处以“soil / subsoil”等词汇讨论土地、改良与乡村经济(用于描写农业与土地产出相关话题)。
  • Thomas Hardy, Tess of the d’Urbervilles:以乡村土地与农事为背景,常出现与“soil(土壤)”相关的描写,语境上涉及土层与土地质地(含“subsoil”的用法/概念)。
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