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Application Effect of Organic Fertilizer and Chemical Fertilizer on the Watermelon Growth and Soil Chemical Properties in Greenhouse

유기질비료와 화학비료의 시용수준에 따른 시설수박 생육과 토양화학성의 변화

  • Uhm, Mi-Jeong (Horticulture Division, Jeollabuk-do Agricultural Research and Extension Service) ;
  • Noh, Jae-Jong (Watermelon Experiment Station, Jeollabuk-do Agricultural Research and Extension Service) ;
  • Chon, Hyong-Gwon (Watermelon Experiment Station, Jeollabuk-do Agricultural Research and Extension Service) ;
  • Kwon, Sung-Whan (Horticulture Division, Jeollabuk-do Agricultural Research and Extension Service) ;
  • Song, Young-Ju (Horticulture Division, Jeollabuk-do Agricultural Research and Extension Service)
  • 엄미정 (전라북도농업기술원 원예과) ;
  • 노재종 (전라북도농업기술원 수박시험장) ;
  • 전형권 (전라북도농업기술원 수박시험장) ;
  • 권성환 (전라북도농업기술원 원예과) ;
  • 송영주 (전라북도농업기술원 원예과)
  • Received : 2012.02.10
  • Accepted : 2012.03.22
  • Published : 2012.03.31

Abstract

BACKGROUND: Organic fertilizers in watermelon cultivation are widely used to supply nutrient and organic matter. This study was conducted to investigate the effects of application rate of organic fertilizer on the watermelon growth and soil chemical properties in greenhouse METHODS AND RESULTS: The organic fertilizers used in this experiment were mixed expeller cake (MEC) and mixed organic fertilizer (MOF). The treatments were conducted with 4 levels (1.0 N, 0.7 N, 0.5 N and 0.3 N) on the basis of soil testing nitrogen fertilization (STNF) using MEC or MOF as the basal dressing, and using chemical fertilizers (CF) as the additional dressing on the rest of STNF. These fertilizations were compared to CF 1.0 N (0.3 N as the basal and 0.7 N as the additional dressing) and non fertilization (NF). The leaf area of watermelon in treatment 0.5 N and 0.3 N using MEC or MOF was similar to CF treatment. The absorbed nutrient amounts by leaf, weight and sugar contents of fruit in the 0.5 N and 0.3 N treatments were higher than other treatments. In 0.5 N and 0.3 N treatments using MEC or MOF on the basis of STNF, soil chemical properties such as electrical conductivity (EC), available $P_2O_5$ and exchangeable K concentrations after experiment showed tendency to decreasing or similar level before experiment. CONCLUSION(s): These results suggest that the MEC or MOF application as the basal dressing at the 30~50% level of STNF and CF application as the additional dressing on the rest of STNF be best to maintain adequate nutrient of soil and to increase marketable yield for watermelon.

시설수박 재배시 안정적 수량확보와 과다시비에 따른 환경오염을 방지하기 위해 유기질비료의 적정 시비기준을 마련하고자 유기질비료인 혼합유박과 혼합유기질비료를 이용하여 시험을 수행하였다. 시험에 사용한 유기질비료는 혼합유박이 질소 3.9%, 인산 2.0%, 가리 0.9%, 혼합유기질비료는 질소 4.1%, 인산 2.1%, 가리 1.1%로 수박의 엽면적은 2가지 비종 모두에서 질소기준 0.5배량과 0.3배량 수준의 처리구가 화학비료 단용처리구와 비슷한 수준을 보였으며, 엽중 양분흡수량 및 수박의 과중과 당도는 가장 크게 나타났다. 수확 후 시험토양은 2가지 비종 모두에서 밑거름으로 50%와 30% 수준으로 시용하고, 웃거름으로 화학비료를 이용한 경우가 EC, 유효인산, 치환성 칼리 함량이 시험전에 비해 비슷하거나 낮아져 다른 처리에 비하여 시설하우스 토양의 염류집적 우려가 적었다. 이에 따라 시설수박 재배시 혼합유박이나 혼합유기질 비료의 적정시비량은 토양검정 질소시비량의 0.3~0.5배량 수준을 정식전 밑거름으로 사용하고, 나머지 양은 화학비료를 웃거름으로 관비를 통해 공급하는 것이 3~10%의 수량 증가 효과가 있었다.

Keywords

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