Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
권호 표지

Utilization of Liquid Pig Manure as a Substitute for Chemical Fertilizer in Double Cropping system of Rice Followed by Onion

벼·양파 작부체계에서 화학비료 절감을 위한 돈분뇨액비의 활용

  • Lee, Jong-Tae (Onion Research Institute, Gyeongnam Agricultural Research and Extention Services) ;
  • Lee, Chan-Jung (Onion Research Institute, Gyeongnam Agricultural Research and Extention Services) ;
  • Kim, Hee-Dae (Onion Research Institute, Gyeongnam Agricultural Research and Extention Services)
  • 이종태 (경상남도농업기술원 양파연구소) ;
  • 이찬중 (경상남도농업기술원 양파연구소) ;
  • 김희대 (경상남도농업기술원 양파연구소)
  • Received : 2004.04.07
  • Accepted : 2004.05.20
  • Published : 2004.06.30
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Abstract

This study was conducted to evaluate the availability of liquid pig manure (LPM) as a substitute for chemical fertilizer (CF) in double cropping system of rice followed by onion. The LPM applied for rice in silty clay loam soil cultivated in the double cropping system with onion contained $3.8g\;N\;kg^{-1}$, $1.8g\;P_2O_5\;kg^{-1}$ and $2.7g\;K_2O\;kg^{-1}$. The LPM applied for onion after rice contained $4.9g\;N\;kg^{-1}$, $1.4g\;P_2O_5\;kg^{-1}$ and $2.1g\;K_2O\;kg^{-1}$. Soil pH increased after rice culture irrespective of treatments. The rice growth and grain yield among CF and LPM applications were not significantly different. The application of LPM without top dressing of CF delayed onion growth at mid and late stage. But when the LPM was applied as basal fertilizer and CF was added for top dressing, onion growth was maintained until late growth stage. The nutrient uptake of LPM and top-dressing by CF (rice)/LPM and top-dressing by CF (onion) were similar to CF (rice)/CF (onion). The highest yield of onion bulb was 58.5 Mg ha-1 at CF (rice)/LPM and top-dressing by CF (onion) treatment, but showed no significant difference with other treatments except CF (rice)/LPM only (onion) and no fertilization (rice)/no fertilization (onion) treatments. In conclusion, in double cropping system of rice followed by onion, rice was capable of being grown by only liquid pig manure but additive chemical fertilizer was needed for optimal onion growth.

벼 양파 작부체계를 갖는 평택통의 미사질 식양토에서 화학비료의 시용량 절감을 목적으로 돈분뇨액비의 활용 가능성을 검토하였다. 벼 재배지에 사용된 액비는 $N\;3.8g\;kg^{-1}$, $P_2O_5\;1.8g\;kg^{-1}$, $K_2O\;2.7g\;kg^{-1}$을 함유하였고 양파 재배지에 사용된 액비는 $N\;4.9g\;kg^{-1}$, $P_2O_5\;1.4g\;kg^{-1}$, $K_2O\;2.1g\;kg^{-1}$을 함유하였다. 토양 pH는 모든 처리구에서 벼 수확 후 0.2-0.3 정도 상승하였다. 벼 생육과 수량은 화학비료구와 돈분뇨액비 시용구 간에 유의적인 차이가 없었다. 돈분뇨액비를 전량 기비로 시용하였을 때 양파의 중 후기 생육이 불량하였으나 액비기비 + 화학비료추비구와 화학비료구에서의 생육 차이는 없었다. 액비기비 + 화학비료추비구에서 수확기 양파의 양분흡수량는 화학비료표준시비구와 유의적인 차이가 없었다. 양파 수량은 앞그루 벼의 재배 시 화학비료를 시용한 조건에서 액비기비 및 화학비료추비 처리한 구에서 $58.5Mg\;ha^{-1}$로 가장 많았으나 액비전량기비구와 무비구를 제외한 다른 처리구와의 유의적인 차이는 없었다. 이상의 결과를 볼 때 벼 양파 작부체계에서 돈분뇨액비를 활용할 경우 벼 재배 시에는 화학비료를 전량 절감할 수 있었으나 양파는 수량성을 유지하기 위해 돈분뇨액비를 기비기준량으로 시용하고 월동 후 화학비료의 추비가 필요하였다.

Keywords

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