| 单词 | raw humus |
| 释义 | > as lemmasraw humus raw humus n. [compare German Rohhumus (1876 or earlier), Swedish råhumus (1877)] vegetable matter not yet fully decomposed; incompletely formed humus. ΘΚΠ the world > the earth > structure of the earth > constituent materials > earth or soil > kind of earth or soil > [noun] > organic soil > humus humus1796 raw humus1891 mull1923 mor1931 1891 W. Schlich Man. Forestry II. i. 32 (heading) Accumulation of raw humus. 1935 Forestry 9 43 Raw humus is characterized by its excessive accumulation (slow decomposition), expandibility, and frequently by the presence of some structural remains of plants... [It is] characterized also by an extremely low base content. 1996 Water, Air & Soil Pollution 91 17 Raw humus is formed under pine and larch. < as lemmas |
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