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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.8
- 수록면
- 239 - 246 (8page)
이용수
초록· 키워드
오류제보하기
Potassium (K) is a main macronutrient for rice but deficit of potassium can have an effect on the productivity of rice and sustainability of paddy soil fertility. In an experiment conducted at the long-term research field of the National Institute of Agricultural Science, we investigated the effects of mineral fertilizer and rice straw compost on dynamic and balance of potassium under a rice single system. The treatments were no fertilization (No fert.), inorganic fertilization (N, NPK), and inorganic fertilizer plus rice straw compost (NPKC). The concentrations of exchangeable K in all treatments were ranged from 0.08 to 0.23 cmolc kg<SUP>-1</SUP> with fluctuation by a 10-year cycle. Especially, exchangeable potassium in NPKC treatment was higher 0.05~0.19 cmolc kg<SUP>-1</SUP> than that of No fert. treatment. K balance in all treatments resulted in the negative level that ranged from -3.4 to -36.4 cmolc kg<SUP>-1</SUP>. These were attributed to supply from K minerals of soil that were identified muscovite, biotite, microcline, and anorthoclase.
목차
ABSTRACT
Introduction
Materials and Methods
Results and Discussion
Conclusion
References
참고문헌 (28)
참고문헌 신청
Andersson, S., M. Simonsson, L. Mattsson, A.C. Edwards, and I. Oborn. 2007. Response of soil exchangeable and crop potassium concentrations to variable fertilizer and cropping regimes in long?term field experiments on different soil types. Soil use and management, 23(1):10-19.
Andrist?Rangel, Y., M. Simonsson, S. Andersson, I. Oborn, and S. Hillier. 2006. Mineralogical budgeting of potassium in soil: a basis for understanding standard measures of reserve potassium. Journal of plant nutrition and soil science, 169(5): 605-615.
Andrist-Rangel, Y., A.C. Edwards, S. Hillier, and I. Oborn, 2007. Long-term K dynamics in organic and conventional mixed cropping systems as related to management and soil properties. Agriculture, ecosystems and environment, 122(4):413-426.
Banks, P.A., P.W. Santelmann, and B.B. Tucker. 1976. Influence of long-term soil fertility treatments on weed species in winter wheat. Agronomy Journal, 68(5):825-827.
Bassett, W.A. 1959. The origin of the vermiculite deposit at Libby, Montana. American Mineralogist, 44(3-4):282-299.
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