名词
中文翻译：Unknown
同义词：
['humus', 'humification', "humus compound例句：1. The soil's humic substances play a crucial role in nutrient cycling.（土壤中的腐殖质在养分循环中起着关键作用。）2. The humic substances in the soil are essential for plant growth.（土壤中的腐殖质对植物生长至关重要。）"]
例句：
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1. The soil's humic substances play a crucial role in nutrient cycling.
土壤中的腐殖质在养分循环中起着关键作用。
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2. The humic substances in the soil are essential for plant growth.
土壤中的腐殖质对植物生长至关重要。
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3.The humic substances in the soil can help to improve soil structure and fertility.
土壤中的腐殖质可以帮助改善土壤结构并提高肥力。