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논문 기본 정보

자료유형
학술저널
저자정보
Hyun Young Hwang (Rural Development Administration) Seong Heon Kim (Rural Development Administration) Myeong Sook Kim (Rural Development Administration) Dong Won Lee (Rural Development Administration) Jae Eun Rim (Rural Development Administration) Jae Hong Shim (Rural Development Administration) Seong Jin Park (Rural Development Administration)
저널정보
한국토양비료학회 한국토양비료학회지 한국토양비료학회지 제52권 제4호
발행연도
2019.11
수록면
520 - 529 (10page)

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This research evaluated the effect of different organic fertilization (OF) on soil organic carbon (SOC) stock and fractions in rice paddy soil. The OF system consisted with NPK, NPK+Rice straw (NPK+RS), NPK+Cow compost (NPK+CC), NPK+Swine compost (NPK+SC) and no-fertilization (Control). Labile organic C fractions and humification rates were characterized and SOC stock was determined with bulk density and SOC content. Application of OF significantly SOC content by 7-12% and 23-33% over the NPK and control, while it decreased bulk density by 2-6% and 11-14%. The lowest bulk density was found in RS, which indicated the improvement of soil physical property. The highest SOC stock (38-39 kg C ha<SUP>-1</SUP>) was observed in SC and CC treatments. The SOC stock showed significant negative correlation with bulk density (p < 0.001), and positively correlated with humification rate, grain yield (p < 0.01) and HWEC and straw yield (p < 0.05), indicating key roles of SOC on soil quality. These results showed that the OF application largely increased SOC stocks, rice yield, and concentration of labile C and stable C. Therefore, application of OF is recommendable for suitable soil management strategy to improve soil fertility and increase crop yield in rice paddy field.

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ABSTRACT
Introduction
Materials and Methods
Results and Discussion
Conclusions
References

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UCI(KEPA) : I410-ECN-0101-2020-523-000120689