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점적관개에 따른 토양수분 재분배 균일성 평가

Uniformity Assessment of Soil Moisture Redistribution for Drip Irrigation

  • 최순군 (서울대학교 생태조경.지역시스템공학부) ;
  • 최진용 (서울대학교 조경.지역시스템공학부, 농업생명과학연구원) ;
  • 남원호 (서울대학교 생태조경.지역시스템공학부) ;
  • 허승오 (농촌진흥청 연구정책과) ;
  • 김학진 (서울대학교 바이오시스템.소재학부) ;
  • 정선옥 (충남대학교 바이오시스템기계공학과) ;
  • 한경화 (농촌진흥청 농업과학기술원 토양관리과)
  • 투고 : 2012.03.05
  • 심사 : 2012.04.13
  • 발행 : 2012.05.31

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 ${\ell}/hr$ and 2 ${\ell}/hr$) 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.

키워드

참고문헌

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