本文对苗圃灰色潮土大团聚体进行分析表明：水稳性团聚体含量为47.55％。
The results of analyzing macro - aggregates of nursery aquod have shown that the water-stable aggregates make up 47. 55%.
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.
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