蚯蚓类中微生物群落活性对土壤团粒结构可起重要作用。
Microfloral activity in worm may have an important effect on soil crumb structure.
可改善土壤物理特征，改良土壤团粒结构，减少土壤密实性。
Can Improve the soil physical characteristics, soil aggregate structure, reduce soil compactness.
秸秆覆盖还田促进土壤团粒结构形成，提高了土壤水稳性团聚体含量，从而改善了土壤通透性和保水保肥性。
Straw mulched could improve soil granular structure, and increase the content of water-stable aggregates, so the ability of permeability, fertilizer and water conservation got improved.
而增施有机肥可以改善土壤的团粒结构和理化性质，更有利于水肥的耦合作用。
More organic fertilizer can not only improve soil aggregates structure and basic character, but also be propitious to the effect of water and soil coupling.
结果表明，大南沟流域内土壤随机糙度、抗剪力和团粒稳定性具有一定的空间变化规律，不同土地利用方式间有显著差异。
The results showed that soil surface random roughness, soil cohesion and aggregate stability had significant difference among land use types.
结果表明，大南沟流域内土壤随机糙度、抗剪力和团粒稳定性具有一定的空间变化规律，不同土地利用方式间有显著差异。
The results showed that soil surface random roughness, soil cohesion and aggregate stability had significant difference among land use types.
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