| 1. | The lack of humus and the excessive leaching make this soil almost useless for agricultural purpose .
缺少腐殖质和过度淋滤使这种土壤对农业几乎无用。
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| 2. | Determination of humus fractionation in forest soil
森林土壤腐殖质组成的测定
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| 3. | The influences of reinforcing cement soil on soil humus
土体腐殖质对水泥土固化的影响
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| 4. | Characteristics of humus in maturing salt - affected soil
盐渍土熟化过程中腐殖质特性的研究
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| 5. | Relative colour degree of humus acid
腐殖酸的相对色度
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| 6. | Clay - humus complex
黏粒腐殖质复合体
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| 7. | Continental humus soil
大陆腐殖土
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| 8. | Dark humus soil
暗色腐殖质土
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| 9. | Study on the enhanced flocculation of the natural humus by polydiallyldimethylammonium chloride
阳离子聚电解质强化絮凝去除活性染料的研究
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| 10. | It is usually found in the loose soil under grass or under a thick layer of humus
这种虫通常栖息在草地的松土里，或在厚厚的腐质层里生活。
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