Effects of Non-drainage Hydroponic Culture on Growth, Yield, Quality and Root Environments of Muskmelon (Cucumis melo L.)

멜론 수경재배 시 배액제로화가 근권환경 및 수량에 미치는 영향

  • Chang, Young Ho (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Hwang, Yeon Hyeon (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • An, Chul Geon (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Yoon, Hae Suk (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • An, Jae Uk (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Lim, Chae Shin (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Shon, Gil Man (Gyeongsangnam-do Agricultural Research and Extension Services)
  • Received : 2012.09.18
  • Accepted : 2012.11.07
  • Published : 2012.12.31

Abstract

This study was conducted to figure out the possibility of non-drainage in muskmelon (Cucumis melo L.) hydroponics culture. Plants were grown under 3 different levels of drainage, standard (20~40%, SD), minimum (5~10%, MD), and non-drainage (ND). Throughout cultivation periods, constant water content and electrolyte conductivity changes in root zone were observed in SD in the range of 60~70% and $1.5{\sim}2.5dS{\cdot}m^{-1}$, respectively. ND treatment caused the fluctuation in water content and electrolyte conductivity of root zone and its change ranges were 30~50% in water content and $2{\sim}6dS{\cdot}m^{-1}$ in electrolyte conductivity, but ND treatment did not decrease fruit quality. Even if fruit fresh weight was slightly lower in ND with 1,863 g, than in SD with 1,990 g, the fruit weight in ND meets standard market size, 1,800~2,000 g. Higher soluble solids content was observed in fruit in ND than in SD and MD. Total amount of drainage per plant was 27,718, 15,769 and 2,346 mL in SD, MD and ND, respectively. SD showed $83.2m^3$ drainage, 34.5% drainage of irrigation amount whereas required total irrigation amount in ND was very low with $7m^3$.

폐양액을 발생시키지 않는 배액제로형 수경재배기술을 개발하기 위하여 멜론 수경재배 시 표준배액량(배액률 20~40%), 배액최소화(5~10%), 배액제로화(0%) 등으로 배액량을 달리하여 근권환경 변화와 재배기간 동안의 급액량과 배액량, 과실품질 등에 미치는 영향을 구명하였다. 재배기간 동안 표준배액에서는 함수률 60~70%, EC $1.5{\sim}2.5dS{\cdot}m^{-1}$ 수준으로 되어 근권환경이 적정범위로 유지되었다. 배액제로 처리에서는 함수률 30~50%, EC $2{\sim}6dS{\cdot}m^{-1}$로 변화가 심하였으나 과실품질에는 크게 영향을 미치지 않았다. 1과중은 표준배액 처리가 1,990g인데 비하여 배액제로 처리는 1,836g으로 다소 가벼웠으나 규격품(1.8~2.0kg) 생산에는 문제가 없었다. 상품과율은 처리 간에 차이가 없었으며 당도는 배액제로처리가 배액최소와 표준배액에 비하여 높았다. 주당 배액량은 표준배액 처리가 27,718mL, 배액최소 처리가 15,769mL, 배액제로 처리가 2,346mL 이었다. 폐양액 발생량은 표준배액 처리가 10a당 $83.2m^3$로 양액공급량의 34.5% 인데 비하여 배액제로 처리는 $7.0m^3$로 나타나 멜론 수경재배에서 배액제로화의 가능성을 확인할 수 있었다.

Keywords

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