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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.12
- 수록면
- 751 - 759 (9page)
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초록· 키워드
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It is known that the poor soil fertility of newly reclaimed saline soils is due to the lack of organic matter and available mineral nutrients for crop production. The effect of green manuring with Sesbania aculeata in combination with five rates of urea-N treatments (N0. N25, N50, N75, N100) on the productivity of a subsequent whole-crop barley and the fertility of the reclaimed saline soil in Saemangeum was evaluated in the field during 2013-2014 growing season. Sesbania was grown during summer season (June to October). The amount of Sesbania incorporated was 16.2 Mg ha<SUP>-1</SUP>. Sesbania contributed to 393 kg N ha<SUP>-1</SUP> to the soils when ploughed down and incorporated before whole-crop barley cultivated. The performances of whole-crop barley following sesbania incorporation were significantly affected by a combination of Sesbania manuring and different N rates. The N fertilizer equivalence without N fertilizer following Sesbania was 42.6% (63.9 kgN ha<SUP>-1</SUP>), compared with N100(150 kg N ha<SUP>-1</SUP>) in fallow soils. The whole-crop barley yield responded to N fertilizer rates in both sesbaniaamended and fallow soil. The yield response to nitrogen rates in fallow soil was linear (Y=0.0586X+3.3011, R<SUP>2</SUP> =0.9534), whereas that in sesbania-amended soils was quadratic (Y= -0.001X<SUP>2</SUP>+0.1322X+5.7143, R<SUP>2</SUP>=0.9576). The yield of whole-crop barley in sesbania-amended with increasing N rates was increased up to SN75 (115 kgN) 10.3 Mg ha<SUP>-1</SUP>. Apparent N recovery (ANR) of whole-crop barely showed decreased with sesbania plus increasing rates of N fertilizer. Despite higher yield with sesbania manuring plus increasing N rates, the contributions of N from Sesbania with increasing N rates to whole-crop barley were decreased, whereas those from fertilizer increment due to excessively mineralized Nitrogen. Considering yield, ANR, N contribution from Sesbania and nitrogen fertilizer, the optimum N rate was N50 rate following sesbania incorporation.
목차
Introduction
Materials and Methods
Results and Discussion
Conclusion
References
참고문헌 (21)
참고문헌 신청
Allison. F. E. / 1996 / The fate of nitrogen applied to soils / Adv. Agro 18:219~258
Brady, N.C. / 2010 / Elements of the nature and properties of soils / MacMillan
Bronick, C. J. / 2005 / Soil structure and management;a review / Geoderma 124:3~22
Cassman, K. G. / 2002 / Agroecosystems, nitrogen-use efficiency and nitrogen management / Ambio : A Journal of Human Environment 31(2):132~140
I. R. P. Fillery / 2001 / The fate of biologically-fixed nitrogen I. legume-based dryand farming systems: a review / Australian Journal of Experimental Agriculture 41(3):361~381
Brady, N.C. / 2010 / Elements of the nature and properties of soils / MacMillan
Bronick, C. J. / 2005 / Soil structure and management;a review / Geoderma 124:3~22
Cassman, K. G. / 2002 / Agroecosystems, nitrogen-use efficiency and nitrogen management / Ambio : A Journal of Human Environment 31(2):132~140
I. R. P. Fillery / 2001 / The fate of biologically-fixed nitrogen I. legume-based dryand farming systems: a review / Australian Journal of Experimental Agriculture 41(3):361~381
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UCI(KEPA) : I410-ECN-0101-2017-523-001984555