... soil humus,soil humus, 土壤腐殖质 humus soil 腐殖质土壤 ; 腐植土 ; 腐殖土 ; 腐植质土 acid humus soil 酸性腐殖质土 ...
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... 地质土壤学 geopedology 粉土质土壤 silt soil 腐殖质土壤 humic soil; humous soil; humu oil; humus soil ...
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... 粉土质土壤 silt soil 腐殖质土壤 humic soil; humous soil; humu oil; humus soil 腐质土壤 humus ...
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一旦腐殖质层消失，养分就无法从土壤中回收和过滤，致使土壤由肥沃变为贫瘠，只适于热带草原植被的生长。
Once the humus layer disappears, nutrients cannot be recycled and leach from the soil, converting soil from fertile to infertile and making it suitable only for savanna vegetation.
间作在常规农作物生长间期内种植的农作物，比如冬麦或三叶草，以预防土壤侵蚀并能提供腐殖质和氮。
Cover crop: a crop such as winter rye or clover planted between periods of regular crop production to prevent soil erosion and provide humus or nitrogen.
蚯蚓吃下大量土壤，排出肥力丰富、物理结构理想的腐殖质。
Earthworms consume large amounts of soil, and produce a rich humus, perfect in texture.
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