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.
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。
The soil physical structure and the soil chemical properties in two restoring measurement are obviously improved.
不同恢复措施的土壤物理结构、土壤化学性质均获得明显的改善。
It improved the soil granular structure in a short time, since high molecular compounds naturally degraded into organic matters.
同时，高分子经过自然降解转化为有机物质，可在较短时间内改善土壤结构。
Through analyzing, conservation tillage did not cause the soil to harden etc, and can reduce the soil bulk density in various degree, improved the structure characteristic of the soil.
通过分析得出，施行保护性耕作后不会引起土壤板结等问题，而且能够不同程度的降低土壤容重，改善土壤的结构特性。
Together with the improved soil a composite ground is formed, and the components and structure of the original -ground have been changed.
还可与被改良土层一起形成复合地基，改变原地基土的成分和结构。
Results showed that the soil structure and porosity were markedly improved and the rupture modulus of soil core were decreased by application of organic materials in clayey soil.
测定表明，有机物料能明显改善土壤的结构性和孔隙性，降低原状土核的破裂系数。
Soil organic matter content was increased, soil structure was improved, the vegetation of discarded field was restored, and the first production was progressed.
土壤有机质含量增加，土壤结构得到改善，弃耕地植被得到恢复，第一生产力提高。
Soil organic matter content was increased, soil structure was improved, the vegetation of discarded field was restored, and the first production was progressed.
土壤有机质含量增加，土壤结构得到改善，弃耕地植被得到恢复，第一生产力提高。
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