지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.12
- 수록면
- 399 - 404 (6page)
이용수
초록· 키워드
오류제보하기
Soil moisture is an important factor for the availability and circulation of nutrients in arable soil. The purpose of this study was to set thresholds moisture content on soil nitrate concentration in the solution for real-time diagnosis. Sandy loam, silt loam, and sandy loam was filled with 1.2 g cm<SUP>-3</SUP> at Wagner pots, 0, 100, and 200 mg L<SUP>-1</SUP> of KNO₃ was saturated. Nitrate in standard solution was recovered about 95% by passing the porous cup. Nitrate concentrations in sampling of soil solution were examined by using a porous cup. The soil solution was higher in accordance with sandy loam> silt loam> clay loam, limited water filled pore space for sampling soil solution was 33.7, 56.4, and 62.2%, respectively. Nitrate concentration in the soil solution was negligible at sandy loam and silt loam during sampling periods, which was decreased about 50~82% in clay loam compared to the initial NO<SUB>3-</SUB>N concentration in the saturated KNO₃ solution. Over limitation of soil solution sampling, soil EC and NO<SUB>3-</SUB>N content were increased with the saturated NO<SUB>3-</SUB>N concentration, regardless of soil texture (p <0.05). Conclusively, soil solution by using a porous cup was possible, regardless of the soil texture, which was useful for the diagnosis in nitrate concentration of soil solution. However, because nitrate concentration of soil solution in a clay loam changes, it was necessary for careful attention in order to take advantage for the real-time diagnosis of nitrogen management in soil.
목차
Abstract
I. 서론
II. 재료 및 방법
III. 결과 및 고찰
IV. 결론
참고문헌
참고문헌 (16)
참고문헌 신청
CooK WP / 1991 / Nitrogen application frequency for drip-irrigation tomatoes / Horti. Sci 26:250~252
Han KW / 1998 / Losses of chemical components by infiltration water during the rice cultivation at silt loam paddy soil / Koeran J. Environ. Agric 17(3):268~273
Hedge DM / 1997 / Nutrient requirement of solanaceous vegetable crops / ASPAC, FFTC :9
Hong SD / 2001 / Relationship between leaf chlorophyll reading value and soil N suppying capability of tomato in green house / Korean J. Soc. Soil Sci. Fert 34:85~91
Johnes PJ. / 1996 / Evaluation and management of the impact of land use change on the nitrogen and phosphorus load delivered to surface waters: the export coefficient modelling approach / Journal of Hydrology 183(3-4):323~349
Han KW / 1998 / Losses of chemical components by infiltration water during the rice cultivation at silt loam paddy soil / Koeran J. Environ. Agric 17(3):268~273
Hedge DM / 1997 / Nutrient requirement of solanaceous vegetable crops / ASPAC, FFTC :9
Hong SD / 2001 / Relationship between leaf chlorophyll reading value and soil N suppying capability of tomato in green house / Korean J. Soc. Soil Sci. Fert 34:85~91
Johnes PJ. / 1996 / Evaluation and management of the impact of land use change on the nitrogen and phosphorus load delivered to surface waters: the export coefficient modelling approach / Journal of Hydrology 183(3-4):323~349
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UCI(KEPA) : I410-ECN-0101-2016-480-000987294