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| Ou,Hui-Ping; Liu,Xi-Hui; Chen,Qiu-Shi; Huang,Yan-Fei; He,Ming-Ju; Tan,Hong-Wei; Xu,Fang-Long; Li,Yang-Rui; Gu,Ming-Hua. |
| ABSTRACT Tillage systems can influence C sequestration by changing aggregate formation and C distribution within the aggregate. This study was undertaken to explore the impact of no-tillage without straw (NT-S) and with straw (NT+S), and moldboard plow without straw (MP-S) and with straw (MP+S), on soil aggregation and aggregate-associated C after six years of double rice planting in a Hydragric Anthrosol in Guangxi, southwest of China. Soil samples of 0.00-0.05, 0.05-0.20 and 0.20-0.30 m layers were wet-sieved and divided into four aggregate-size classes, >2 mm, 2.00-0.25 mm, 0.25-0.053 and <0.053 mm, respectively, for measuring aggregate associated C and humic and fulvic acids. Results showed that the soil organic carbon (SOC) stock in bulk soil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hydragric Anthrosol; Soil organic carbon; Straw incorporation; Tillage system. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100514 |
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