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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
- 2017.6
- 수록면
- 150 - 161 (12page)
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초록· 키워드
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This study was conducted with the data of monitoring on soil chemical properties of rice paddy soils in Gyeongbuk Province. The selected soil chemical properties were analyzed every 4 year from 1999 to 2015. The soil pH measured in 2015 was higher than pH 6.0, which was 0.3-0.4 pH unit higher than data until 2007 survey year. The mean content of organic matter was greater than 24 g kg<SUP>-1</SUP> since 2003, but 35% of soil samples remained below the recommended level (20-30 g kg<SUP>-1</SUP>) in 2015. The mean concentration of available phosphate was maintained at 40 mg kg<SUP>-1</SUP> higher than the upper recommendation level (80-120 mg kg<SUP>-1</SUP>), and more than 40% of paddy soils tested were found to have less than the recommendation level during the survey period. The exchangeable K concentration ranged from 0.25 to 0.39 cmolc kg<SUP>-1</SUP>. Exchangeable Ca showed an average at the optimum range (5.0-6.0 cmolc kg<SUP>-1</SUP>) during the monitoring period. Exchangeable Mg decreased linearly (0.02 cmolc kg<SUP>-1</SUP> year<SUP>-1</SUP><SUP></SUP>) from 1.55 cmolc kg<SUP>-1</SUP><SUP></SUP> as of 1999 to below the lower level of the recommendation range (1.5-2.0 cmolc kg<SUP>-1</SUP>). The amount of available SiO₂ was increased significantly from 2011 to over the recommendation level (≥157 mg kg<SUP>-1</SUP>). It was revealed that the soil chemical properties of rice paddy fields was influenced by topology, soil texture, type and region as result of principal component analysis or cluster analysis. Therefore, an assessment on chemical properties of rice paddy soils should be performed to consider various soil physical conditions and agronomic practices such as fertilization, cropping system, and so on. Because of the high variability of nutrient levels across Gyeongbuk Province, nutrient management based on soil fertility test is required by respective farm land unit.
목차
ABSTRACT
Introduction
Materials and Methods
Results and Discussion
Conclusions
References
참고문헌 (26)
참고문헌 신청
Ahn, B.K., D.Y. Ko, C.K. Lee, J.H. Kim, Y.J. Song, and J.H. Lee. 2016. Long-term investigation of soil chemical properties in paddy fields located in different topographic areas of Jeonbuk Province. Korean J. Soil Sci. Fert. 49:275-281.
Asparouhov, T. and B. Muthen. 2016. Structural equation models and mixture models with continuous nonnormal skewed distributions. Struct. Equation Model: A Multidiscip. J. 23:1-19.
Gransee, A. and H. Fuhrs. 2013. Magnesium mobility in soils as a challenge for soil and plant analysis, magnesium fertilization and root uptake under adverse growth conditions. Plant Soil 368:5-21.
Jung, B.G., G.H. Jo, E.S. Yoon, J.H. Yoon, and Y.H. Kim. 1998. Monitoring on chemical properties of bench marked paddy soils in Korea. Korean. J. Soil Sci. Fert. 31:246-252.
Kang, S.S., A.S. Roh, S.C. Choi, Y.S. Kim, H.J. Kim, M.T. Choi, B.K. Ahn, H.W. Kim, H.K. Kim, J.H. Park, Y.H. Lee, S.H. Yang, J.S. Ryu, Y.S. Jang, M.S. Kim, Y.K. Sonn, C.H. Lee, S.G. Ha, D.B. Lee, and Y.H. Kim. 2012. Status and change in chemical properties of paddy soil in Korea. Korean. J. Soil Sci. Fert. 45:968-972.
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UCI(KEPA) : I410-ECN-0101-2018-523-000984100