[Effects of Tillage and Straw Return on the Distribution of Soil Aggregates and Integration of Organic Carbon in Farmland Soil].

作者：Tianzi Li, Yan-Jun Zhang, Shuina Dang, Jing Li · 发表于：PubMed · 年份：2025 · DOI：10.13227/j.hjkx.202407094 · 被引用次数：1 · 研究领域：Soil Carbon and Nitrogen Dynamics、Plant Ecology and Soil Science、Rangeland Management and Livestock Ecology

< 0.05）， respectively. Furthermore， the increase of SOC under different tillage depths after straw return was closely related to the stability of soil aggregates and the change of SOC in soil aggregates. Geometric mean diameter had the largest contribution rate to soil aggregate stability， and soil microaggregate SOC made the largest contribution to soil aggregate SOC. Therefore， in China's dryland farmland ecosystem， tillage depth and straw return and their interaction affect the distribution of soil aggregates and SOC. For total SOC， geometric mean diameter and microaggregate SOC have the highest contribution rates. In conclusion， shallow tillage straw return may be an important agricultural management measure to improve soil stability and carbon sequestration capacity.