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Fav十万个为什么
为什么蚯蚓能改良土壤？
蚯蚓能改良土壤主要是因为蚯蚓能疏松土壤、增加土壤肥力、以及改善土壤结构。
1、蚯蚓能疏松土壤。蚯蚓在土壤中钻洞爬行，其活动可以使土壤变得疏松多孔，增强土壤的透气性和透水性，有利于植物根系的生长和水分的渗透。
2、增加土壤肥力。蚯蚓以腐烂的有机物为食，将其消化后排出的蚯蚓粪是一种优质的天然肥料，富含氮、磷、钾等养分，能够显著提高土壤的肥力。
3、改善土壤结构。蚯蚓的排泄物和分泌的粘液能够将细微的土壤颗粒粘结成团粒结构，增强土壤的保水保肥能力，改善土壤的物理性质。
总结：蚯蚓能改良土壤，是因为蚯蚓能疏松土壤、增加土壤肥力以及改善土壤结构。
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