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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국토양비료학회 한국토양비료학회지 한국토양비료학회지 제53권 제3호
발행연도
2020.8
수록면
309 - 322 (14page)

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초록· 키워드

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This study was performed to investigate the changes in evapotranspiration, soil temperature, and soil water in different paddy soils during the non-cultivated period (from January 1 to April 12 in 2017) using weighable lysimeters. The relationships between air temperature and soil temperature and between precipitation parameters and change content of soil water were also investigated. The evapotranspiration increased with increasing air temperature. The total amount of evapotranspiration in the study period was in the order of CL-L (coarse loamy-loam) > CL-SL (coarse loamy-sandy loam) > FC-SiCL (fine clayey-silty clay loam). All three soil types of FC-SiCL, CL-L, and CL-SL had a similar tendency to change in soil temperature. The soil temperature at a 0.1 m depth responded most sensitively to changes in air temperature. The air temperature was showed to have high significantly positive correlations with soil temperature at five depths (0.1 m, 0.3 m, 0.55 m, 0.85 m, and 1.25 m) in the three soils (p < 0.01). Especially the correlation coefficient between soil temperature of 0.1 m depth and the air temperature was higher than 0.9. The soil water content responded most sensitively to precipitation at 0.1 m depth in all three soils. The change content of soil water differed according to the soil water content before precipitation. Precipitation and change content of soil water at depths of 0.1 m and 0.3 m was highly positively (p < 0.01) correlated in all three soils. Change in the content of soil water at a 0.1 m depth was positively (p < 0.05) related to precipitation intensity and precipitation kinetic energy. Soil texture, soil water content, and precipitation conditions need to be considered to establish the irrigation management plan necessary before transplanting.

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ABSTRACT
Introduction
Materials and Methods
Results and Discussion
Conclusions
References

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UCI(KEPA) : I410-ECN-0101-2020-523-001160205