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Soil Moisture Extraction Characteristics of Cucumber Crop in Protected Cultivation

오이 시설재배지에서의 토양수분 소비특성 분석

  • 홍은미 (서울대학교 농업생명과학연구원) ;
  • 최진용 (서울대학교 조경.지역시스템공학부, 농업생명과학연구원) ;
  • 남원호 ;
  • 강문성 (서울대학교 조경.지역시스템공학부, 농업생명과학연구원) ;
  • 장정렬 (한국농어촌공사 농어촌연구원)
  • Received : 2014.01.06
  • Accepted : 2014.02.24
  • Published : 2014.03.31

Abstract

Water for crop growth were supplied by irrigation in protected cultivation and these are accumulated in the soil and utilized for crop evapotranspiration. The study for analyzing soil moisture characteristics is necessary for adequate irrigation water and soil water management in protected cultivation. Soil moisture content, irrigation water quantity and meteorological data were monitored to analyze soil moisture increment and extraction characteristics in terms of soil layers and cucumber crop growth stages. In first cropping period, the total amount of irrigation water was 5.07 mm/day, soil moisture increment was 4.82 mm/day and soil moisture extraction was 5.56 mm/day. In second cropping period, the total amount of irrigation water was 4.82 mm/day, soil moisture increment was 4.65 mm/day and soil moisture extraction was 4.73 mm/day. Soil moisture extraction rate from 0 to 75 cm is 90.3 % in first cropping period and 79.1 % in second cropping period. The majority irrigation water were consumed in root zone, however, about 15 % of soil moisture were losses by infiltration in lower soil layer. Soil moisture extraction and extraction pattern of cucumber crop calculated in this study can be utilized as a basic data for irrigation water management in protected cultivation.

Acknowledgement

Grant : 농업비점오염 저감을 위한 영농방법 개선기법 개발

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