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- W2394261978 abstract "A long-term experiment was utilized to study the effects of applying different amounts(high,normal and none)of crop residue on the organic matter content,aggregate particle size distribution,and aggregate stability in red paddy soil under different groundwater level(80cm,20cm).The results showed that the water stable aggregate of three fertilization treatment under high or low ground water level were dominated by2mm particle size,the proportion were 58.62%~71.29% and 68.66%~80.46%respectively,and the quantity decreased with decreasing particle size.The application of crop residue increased the amount of soil water stable aggregate(0.25 mm),aggregate mean weight diameter(MWD),geometric mean diameter(GMD),and decreased aggregate fractal dimension(D).Groundwater level significantly affected soil aggregate stability.The MWD and GMD of soil aggregate under low groundwater level was higher than that under high groundwater level obviously.Soil organic carbon(SOC)content was also influenced by fertilization and groundwater level.The contents of total organic carbon was 14.45~20.46g/kg and 14.16~18.88g/kg under high groundwater level and low groundwater level respectively.The SOC contents of high and normal crop residue application treatments were 44%,29% and 32%,25% higher than that of mineral fertilizer treatment under high and low groundwater level conditions.Water stable aggregate(2mm)had the highest mass proportion and organic carbon contents among different soil particle sizes,and had the most important contribution to improve SOC." @default.
- W2394261978 created "2016-06-24" @default.
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- W2394261978 date "2013-01-01" @default.
- W2394261978 modified "2023-09-24" @default.
- W2394261978 title "Effects of Fertilization on Aggregate Composition and Organic Carbon Distribution in Paddy Soil Under Different Groundwater Level" @default.
- W2394261978 hasPublicationYear "2013" @default.
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