점적관개에 따른 토양수분 재분배 균일성 평가
Uniformity Assessment of Soil Moisture Redistribution for Drip Irrigation
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다운로드
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참고문헌
키워드
초록
Greenhouse cultivation has been increasing for high quality and four season crop production in South Korea. For the cultivation in a greenhouse, maintaining adequate soil moisture at each crop growth stage is quite important for yield stability and quality while the behavior of moisture movement in the soil has complexity and adequate moisture conditions for crops are vary. Drip irrigation systems have been disseminated in the greenhouse cultivation due to advantages including irrigation convenience and efficiency without savvy consideration of the soil moisture redistribution. This study aims to evaluate soil moisture movement of drip irrigation according to the soil moisture uniformity assessment. Richards equation and finite difference scheme were adapted to simulate soil moisture behavior in soil. Soil container experiment was conducted and the model was validated using the data from the experiment. Two discharge rate (1 ℓ/hr and 2 ℓ/hr) and three spaces between the emitters (10 cm, 20 cm, and 30 cm) were used for irrigation system evaluation. Christiansen uniformity coefficient was also calculated to assess soil moisture redistribution uniformity. The results would propose design guidelines for drip irrigation system installation in the greenhouse cultivation.
Abstract
Greenhouse cultivation has been increasing for high quality and four season crop production in South Korea. For the cultivation in a greenhouse, maintaining adequate soil moisture at each crop growth stage is quite important for yield stability and quality while the behavior of moisture movement in the soil has complexity and adequate moisture conditions for crops are vary. Drip irrigation systems have been disseminated in the greenhouse cultivation due to advantages including irrigation convenience and efficiency without savvy consideration of the soil moisture redistribution. This study aims to evaluate soil moisture movement of drip irrigation according to the soil moisture uniformity assessment. Richards equation and finite difference scheme were adapted to simulate soil moisture behavior in soil. Soil container experiment was conducted and the model was validated using the data from the experiment. Two discharge rate (1 ℓ/hr and 2 ℓ/hr) and three spaces between the emitters (10 cm, 20 cm, and 30 cm) were used for irrigation system evaluation. Christiansen uniformity coefficient was also calculated to assess soil moisture redistribution uniformity. The results would propose design guidelines for drip irrigation system installation in the greenhouse cultivation.
참고문헌 (23)
- Christiansen, J. E., "Hydraulics of Sprinkling Systems for Irrigation", Transaction of the American Society of Agriculture Engineering, 107, pp.221~239 (1942)
- Celia, M. A., "A General Mass Conservative Numerical Solution for Unsaturated Flow Equation", Water Resource Research, 26, pp.1483~1496 (1990)
- Cho, C. Y., "Study on the Israeli Agricultural Technology to Convert the Desert Lands into Prosperous Green Lands", Korean Society of International Agriculture, 12(3), pp.217~225 (2000)
- Elmaloglou, S., "Soil Water Dynamics under Surface Trinkle Irrigation as Affected by Soil Hydraulic Properties, Discharge Rate, Dripper Spacing and Irrigation Duration", Irrigation and Drainage, 59, pp.254~263 (2010)
- 홍은미, "침엽수 산림에서의 토양수분 감쇄특성 분석", 한국농공학회논문집, 53(4), pp.1~9 (2011), 한국농공학회
- 허승오, "사양토에서의 용적수분 함량 측정을 위한 TDR 및 FDR 센서의 검증", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 42(2), pp.110~116 (2009), 한국토양비료학회
- 강남준, "관수량 조절이 시설 토마토 과실의 당도와 수량에 미치는 영향", 시설원예‧식물공장, 15(4), pp.335~339 (2006), 한국생물환경조절학회
- 김학진, "점적관개 시 토성별 습윤·건조 특성 비교", 시설원예‧식물공장, 18(4), pp.309~315 (2009), 한국생물환경조절학회
- Kim, L. Y., "Effects of Physical Improvement Practices atPlastic Film House Soil", Korean Society of Soil Scienceand Fertilizer, 34(2), pp.92~97 (2001)
- 이동훈, "시설재배 토양의 수분 조절을 위한 자동 수분제어시스템 개발", 바이오시스템공학, 33(2), pp.115~123 (2008), 한국농업기계학회
- Lee, N. H., "Performance and Hydraulic Characteristics of Drip Emitters", Journal of the Korean Society of Agricultural Engineers, 41(3), pp.33~40 (1999)
- Lee, N. H., "A Study on the Utilization of Irrigation Water for Greenhouse Farming", Korean Society of Rural Planning, 4(2), pp.96~102 (1998)
- Mualem, Y., "A New Model for Predicting the Hydraulic Conductivity of Unsaturated Porous Media", Water Resource Research, 12, pp.513~522 (1976)
- Nash, J. E., "River Flow Forecasting through Conceptual Models Part I-A Discussion of Principles", Journal of Hydrology, 10(3), pp.282~290 (1970)
- 남상운, "시설재배용 분수호스 및 점적관수 시스템의 관수균일도 분석", 시설원예‧식물공장, 16(4), pp.297~302 (2007), 한국생물환경조절학회
- Postel, S. L., "Entering an Era of Water Scarcity: the Challenge Ahead", Ecological Society of America, 10, pp.941~948 (2000)
- Richards, L. A., "Capillary conduction of liquids in porous mediums", Physics, 1, pp.318~333 (1931)
- Ro, H. M., "Research on Effect of Drip Irrigation to Three-Dimensional Soil Moisture Distribution Considering CropUptake", Korean Society of Soil Science and Fertilizer, 43(2), pp.116~123 (2000)
- Ro, H, M, "2-Dimensional Moisture Migration Modeling in Drip-Irrigated Root Zone", Korean Society of Soil Science and Fertilizer, 30(4), pp.314~327 (1997)
- Sadegh, Z. K., "A Mass-conservative Switching Algorithm for Modeling Fluid Flow in Variably Saturated Porous Media", Journal of computational physics, 230, pp.664~679 (2011)
- Schaap M. G., "Rosetta: a Computer Program for EstimatingSoil Hydraulic Parameters with Hierarchical PedotransferFunctions", Journal of Hydrology, 251, pp.163~176 (2001)
- van Genuchten, M. T., "A closed-form equation for predicting the hydraulic conductivity of unsaturated soils", American Journal of Soil Science Society, 44, pp.892~898 (1980)
- Wu, I. P., "Drip Irrigation Application Efficiency and Schedules", Transactions of the American Society of Agricultural Engineering, 26, pp.92~99 (1983)