Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Effect of Growth and Yield with SCB Leachate Application Rates in Rice

SCB 퇴비단 여과액비의 시용 수준이 벼 생육과 수량에 미치는 영향

  • Received : 2012.05.29
  • Accepted : 2012.12.17
  • Published : 2012.12.31
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Abstract

This study was carried out to determine the effect of SCB compost leachate on the growth and yield of rice. Field experiment was conducted on sandy loam soil under the different fertilizer management; 80%, 100%, 130% N level of SCB leachate based on 13kg N/10a of conventional farmer application level and chemical fertilizer as control. The plant height and tiller's number of 80 and 100% N levels of SCB leachate were lower than that of the chemical fertilizer plot. But in the plot of 130% N level of SCB leachate the plant height and tillers was higher than that of chemical fertilizer. And the SPAD reading value of leaf in plot of 130% N level was higher than that of the chemical fertilizer. Rice yield in the 80% and 100% SCB leachate was increased from 12 to 13% that of plot of chemical fertilizer. But rice yield of 130% N-level was decreased 7% compared with chemical fertilizer. Rice quality of the application levels of 80 and 100% SCB leachate levels was significantly better than those of chemical fertilizer and 130% level of SCB leachate. In conclusion, the 100% N application of SCB leachate was improved yield and quality of rice.

본 연구는 SCB 공정 여과액비 시용이 벼 생육, 수량구성요소, 수량, 쌀의 미질과 토양에 미치는 영향을 구명하기 위하여 SCB 여과액비 시용구는 농가관행 질소시용량인 13kg N/10a를 기준으로 하여 80%, 100%, 130%에 해당되는 여과액비 화학비료 시용구를 대조구로 두었다. 결과를 요약하면 아래와 같다. 분얼수에서 생육초기 SCB 여과액비 80, 100% 시용구는 화학비료와 대등하였다. 여과액비 130% 시용구는 화학비료 시용구 보다 분얼수가 많고 초장이 큰 과번무 상태를 나타내었다. SCB 여과액비 130% 시용구는 등숙률과 천립중이 화학비료 시용구 대비 각각 8%, 11% 낮아졌다. 벼의 정조수량은 SCB 여과액비 80%, 100% 시용구는 대조구인 화학비료 시용구 대비 12~13% 증수되었다. SCB 여과액비 130% 시용구의 정조수량은 과다시용에 의한 등숙률과 천립중이 저하되어 화학비료시용구 대비 7% 감수되었다. 현미의 품질지수는 SCB 여과액비 80%, 100% 시용구에서 화학비료 시용구 보다 높았다. 그러나 SCB 여과액비 130% 시용구의 쌀 품질지수는 낮았다. SCB 여과액비 80~100% 범위의 적량시용은 벼 수량증수와 쌀 품질 향상이 가능하나 130%의 과다시용은 과번무로 등숙률과 천립중이 낮아져 수량감수를 초래하여 미질저하의 원인이 되므로 SCB 여과액비 시용시 질소시용량의 11~13kg N/10a에 해당하는 여과액비의 시용량이 적정할 것으로 판단된다.

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