Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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The Effect of Continuous Use of Cow Manure on Productivity of Organic Rice and Feed Value, Stock Carrying Capacity of Organic Rice Straw in Central Region of Korea

한국 중부지역에서 우분의 연용이 유기 벼의 생산성 및 유기 볏짚의 사료가치, 가축사육능력에 미치는 영향

  • 박상수 (일본 지바대학 원예학연구과) ;
  • 노진환 (연세대학교 과학기술대학 생명과학기술학부) ;
  • 이희충 (연세대학교 과학기술대학 생명과학기술학부) ;
  • 김윤중 (연세대학교 과학기술대학 생명과학기술학부) ;
  • 이주삼 (연세대학교 과학기술대학 생명과학기술학부)
  • Received : 2013.05.12
  • Accepted : 2013.06.13
  • Published : 2013.06.30
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Abstract

This experiments was conducted to investigate the influence on organic rice cultivation by continuous use of cow manure in the central region of Korea and investigated productivity of organic rice and feed value, stock carrying capacity of organic rice straw. In the results, application of chemical fertilizer showed higher one of 1st and 2nd year in fresh matter yield (15.77, 30.30ton/ha), dry matter yield (9.90, 13.89 ton/ha), dry matter yield of rice straw (4.88, 7.15ton/ha), dry matter weight of kernel per plant (29.81, 39.99g) and number of kernel per plant (1212.58, 1701units), but there were not significantly differences with each experimental plots in 3rd year. And harvest index showed higher one in application of chemical fertilizer (0.52, 0.48, 0.43) until 3 years. But their quantitative difference between application of chemical fertilizer and cow manure was gradually decreased each year. And the average value of $K_{CP}$ and $K_{TDN}$ showed higher one in application of chemical fertilizer (2.01, 2.94, 1.95 head/ha/yr) until 3 years. However, quantitative difference between chemical fertilizer and cow manure was gradually decreased each year. Especially, application of cow manure showed higher value of 3rd year in $K_{ME}$, but there was not significantly difference with each experimental plots. According to the results, continuous use of cow manure will be reduced their quantitative differences between chemical fertilizer as the year progress in the central region of Korea in terms of productivity of organic rice and feed value, stock carrying capacity of organic rice straw.

본 실험은 중부지방에서 벼 재배 시 유기 우분의 연용과 화학비료 시용이 유기 벼의 생산성, 볏짚의 사료가치 및 가축사육능력에 미치는 영향을 조사하였고, 결과를 요약하면 다음과 같다. 유기 벼의 생초수량, 건물수량, 식물 1개체 당 낱알의 건물 중 및 개수는 1, 2년차에는 화학비료 시용구가 유의하게 높았으나(p<0.05), 3년차에는 각 시험구 간 유의차는 없었다. 또한 수확지수는 3년 모두 화학비료 시용구가 유의하게 높았으며(p<0.05), 해가 거듭할수록 각 시험구 간의 차이가 약간 줄어드는 경향을 보였다. 또한 단위면적당 가축사육능력은 $K_{CP}$와 $K_{TDN}$의 평균값으로 비교해 보았을 때, 화학비료 시용구가 높은 값을 보였고, 각 시험구 간의 차이는 점점 줄어드는 경향을 보였다. 특히 $K_{ME}$의 경우 3년차에 우분 시용구가 유의한 차이는 없었지만 높은 값을 보이기도 하였다. 이상의 결과로 볼 때 중부 지방에서 유기 벼 재배 시 우분을 연용 했을 경우, 처음 1, 2년은 화학비료를 시용했을 때 보다는 수량이 낮았지만 3년차부터는 화학비료를 시용했을 때와의 격차가 줄어들기 시작하였으며, 추후 우분을 연용한다면 그 격차는 더욱 줄어들 것으로 판단된다.

Keywords

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