| 单词 | soil organic matter |
| 释义 | > as lemmassoil organic matter soil organic matter n. ΚΠ 1915 T. L. Lyon et al. Soils viii. 126 The source of practically all soil organic matter is plant tissue. 1971 Gloss. Soil Sci. Terms (Soil Sci. Soc. Amer.) 17/1 Soil organic matter, the organic fraction of the soil; includes plant and animal residues at various stages of decomposition, cells and tissues of soil organisms, and substances synthesized by the soil population. 1979 W. L. Pritchett Properties & Managem. Forest Soils xvi. 290 While soil organic matter can be increased by use of green manure crops and the additions of composts.., such increases are temporary due to the decomposition of these materials by soil organisms. < as lemmas |
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