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
- 2018.11
- 수록면
- 648 - 656 (9page)
이용수
초록· 키워드
오류제보하기
pH and pe are very helpful values for understanding soil environmental conditions. Particularly, it has a great influence on the form of nutrients such as nitrogen. When pH+pe is less than 14.32, NO₂<SUP>-</SUP> increases and NO₂(g) produced from NO₂<SUP>-</SUP> harms crops. In this study, KOH, KMnO4, and sodium percarbonate (sp) were used to raise pH and pe to above the appropriate range (pH 6-7). While the pH was around 5 before the test, the pH was maintained at 6 or higher by all treatments until the end of the test (pH increment (ΔpH) after 5 days 1.0-2.5). pH+pe values were able to be corrected to 14.32 or more by KOH+KMnO₄ treatments and sp treatment in drip irrigation and excessive treatment was good at furrow irrigation with easily reductive condition. Potassium (K), which is one of soil cation exchange capacity (CEC), acts as a strong base to increase the pH, so it is necessary to carry out the CEC measurement and titration test before the KOH+KMnO₄ treatment. Mn<SUP>2+</SUP> is decreased by the precipitation reaction with phosphate ion (H₂PO₄<SUP>-</SUP>) in the soil. Phosphate input will be helpful to supply phosphate necessary for crop growth and to prevent Mn excess. In addition, when determining the amount of reagent treated, it is considered that the soil osmotic pressure should be lower than the plant osmotic pressure so as not to cause wilted plant.
목차
ABSTRACT
Introduction
Materials and Methods
Results and Discussion
Conclusions
References
참고문헌 (19)
참고문헌 신청
Bohrerova, Z., R. Stralkova, J. Podesvova, G. Bohrer, and E. Pokorny. 2004. The relationship between redox potential and nitrification under different sequences of crop rotations. Soil Tillage Res. 77(1):25-33.
Campbell, G.S. and J.M. Norman. 2012. An introduction to environmental biophysics. Springer Science & Business Media, Washington, USA.
Dorau, K. 2017. Monitoring of reducing conditions in soils and implications for biogeochemical processes. Ph. D. Thesis, Universitat zu Koln, Koln, Germany.
Gardiner, D.T. and S. James. 2012. Wet soil redox chemistry as affected by organic matter and nitrate. Am. J. Clim. Change. 1(04):205.
Griffin, R.A. and J.J. Jurink. 1973. Estimation of activity coefficients from the electrical conductivity of natural aquatic systems and soil extracts. Soil Sci. 116:26-30.
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UCI(KEPA) : I410-ECN-0101-2019-523-000170179