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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.11
- 수록면
- 420 - 426 (7page)
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초록· 키워드
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The objective of this study was to evaluate nitrogen (N) source tracing using N stable isotope on corn (Zea mays L.) and leached water. Five nitrogen treatments were control (No nitrogen), 2 chemical N fertilizer (urea and slow released nitrogen (SRN), 1 cattle nitrogen manure (CM), and 1 oil cake from rapeseed (Brassica napus L.) after oil extraction. N rate was 200 kg N ha<SUP>-1</SUP>. The experiment was designed by a completely randomized block design with four replications. Lysimeter was filled with 4 kg of soil and corn was planted. Plant samples were collected at a growth stage of V6 and analyzed for total N and δ15N. Water samples were collected every week and analyzed for nitrate-N and δ<SUP>15</SUP>N. In this study, total N content at a growth stage of V6 corn plant ranged from 0.56% to 4.07%. N content was 0.56% for the control, 0.57% for the CM, 3.16% for the SRN, 3.19% for the oil cake, and 4.07% for the urea treatment. δ<SUP>15</SUP>N value at a growth stage of V6 corn plant ranged from 0.098‰ to -3.453‰. δ<SUP>15</SUP>N value in corn plant was -3.453‰ for the SRN treatment, -0.213‰ for the urea, 0.098‰ for the control, 2.935‰ for the oil cake, and 5.563‰ for the CM. Nitrate-N concentration in leached water was the lowest under control, followed by CM, SRM, oil cake, and nitrate-N concentration in leached was the highest under urea treatment. These results suggest different N mineralization from diverse N sources. Averagedδ<SUP>15</SUP>N isotope value in leached water changed from negative to positive. Averagedδ<SUP>15</SUP>N isotope under chemical N fertilizers such as urea and SRN was -16‰ and -15.0‰, respectively at the 5<SUP>th</SUP> week. Averagedδ<SUP>15</SUP>N isotope values for all N treatments changed during the experiment. These results indicate that δ<SUP>15</SUP>N isotope technique can be used for leached water samples to differentiate N sources. However, further research is needed to clarify the exact timing of sampling based on different N sources.
목차
ABSTRACT
Introduction
Materials and Methods
Results and Discussion
Conclusions
References
참고문헌 (15)
참고문헌 신청
Fogg, G.E., D.E. Rolston, D.L. Decker, D.T. Louie, and M.E. Grismer. 1998. Spatial variation in nitrogen isotope values beneath nitrate contamination sources. Ground Water 36(3):418-426.
Han, K., H. Ro, H. Cho, L. Kim, S. Hwang, H. Cho, and K. Song. 2008. Mobility of nitrate and phosphate through small lysimeter with three physico-chemically different soils. Korean Soc. Soil Sci. Fert. 41:260-266.
Jensen, L.S., I.S. Pedersen, T.B. Hansen, and N.E. Nielsen. 2000. Turnover and fate of 15N-labelled cattle slurry ammonium-N applied in the autumn to winter wheat. Eur. J. Agro. 12:23-35.
Kang, H., S. Yang, and S. Lee. 2011. Effects of liquid pig manure on growth of potato, soil chemical properties and infiltration water quality. Korean Soc. Soil Sci. Fert. 44:1130-1136.
Kendall, C., E.M. Elliott, and S.D. Wankel. 2007. Tracing anthropogenic inputs of nitrogen to ecosystems. Stable isotopes in ecology and environmental science. R. H. Michener and K. Lajtha, Blackwell Publishing. 375-449.
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UCI(KEPA) : I410-ECN-0101-2019-523-000169947