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| humus; top soil | |||
| leaf moulds | |||
| mould | |||
| humus The more or less decomposed organic matter in the soil. Besides being the source of most of the mineral salts needed by plants, humus improves the texture of the soil and holds water, so reducing the loss of nutrients by leaching | |||
| topsoil | |||
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| hotbed muck-soil; humous soil | |||
| duff | |||
| mor | |||
| vegetable soil | |||
| decomposed organic matter; soil ulmin | |||
| |||
| humic; humous | |||
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Humus : 27 短语, 5 学科 |
| 农业 | 6 |
| 土壤科学 | 4 |
| 生命科学 | 12 |
| 自然科学 | 3 |
| 自然资源和野生动物保护 | 2 |