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Evaluation of Preplant Optimum Application Rate of Mixed Expeller Cake in Chinese Cabbage Cultivation at the Field

노지 배추 재배시 혼합유박의 밑거름 적정 시용량 평가

  • Kim, Seong Heon (National Academy of Agricultural Sciences, Rural Development Administration) ;
  • Hwang, Hyun Young (National Academy of Agricultural Sciences, Rural Development Administration) ;
  • Park, Seong Jin (National Academy of Agricultural Sciences, Rural Development Administration) ;
  • Kim, Seok Cheol (Gyeonggi Provincial Agricultural Research & Extension Services) ;
  • Kim, Myung Sook (National Academy of Agricultural Sciences, Rural Development Administration)
  • 김성헌 (농촌진흥청 국립농업과학원) ;
  • 황현영 (농촌진흥청 국립농업과학원) ;
  • 박성진 (농촌진흥청 국립농업과학원) ;
  • 김석철 (경기도농업기술원) ;
  • 김명숙 (농촌진흥청 국립농업과학원)
  • Received : 2019.06.28
  • Accepted : 2019.08.29
  • Published : 2019.09.30

Abstract

Mixed expeller cake has been one of soil management to improve crop productivity and soil fertility. But, there was a little information on optimum mixed expeller cake application for chinese cabbage. So, in this study, we were evaluated the preplant optimum application rate of mixed expeller cake(MEC) in chinese cabbage cultivation at field. Treatments consist of control, inorganic fertilizer($N-P_2O_5-K_2O$ : $320-78-198kg\;ha^{-1}$), MEC(50, 100, 150% on preplant application standard $110kg\;ha^{-1}$ as N, topdressing : $210kg\;ha^{-1}$ as N). In results, growth characteristics was not significantly different. But, yield was increased when application rate was increased. And MEC 150% treatment showed similar yield as inorganic treatment. There was no significant difference in soil pH, OM, $Av.P_2O_5$, $NH_4-N$ and Ex.K. But, soil EC and $NO_3-N$ were increased when MEC level increased. As a results, MEC 150% can be proposed as preplant optimum application rate of MEC from this study. But abuse of MEC and long-term using caused about salt accumulation in soil.

유기질 비료 중 혼합유박은 작물생산성과 토양의 비옥도를 높일수 있는 농자재중 하나이다. 그러나 배추 재배시 혼합유박의 적정시용량에 대한 연구는 미비한 실정이다. 이에 본 연구는 혼합유박의 밑거름 시용량에 따른 배추의 생육, 수량 및 토양특성 변화를 확인하고 이를 통해 혼합유박의 밑거름 적정 시용량을 제시하고자 하였다. 본 시험은 무처리, NPK처리구($N-P_2O_5-K_2O$ : $320-78-198kg\;ha^{-1}$), 혼합유박 처리구는 밑거름을 질소기준 $210kg\;ha^{-1}$을 50, 100 및 150% 수준으로 기비하고 추비는 시기에 맞게 시비하는 것으로 설정하였다. 배추의 생육은 무처리구를 제외하고는 통계적 유의성은 없었으나, 수량의 경우 NPK 처리구 > MEC 150% 처리구 > MEC 100% 처리구 > MEC 50% 처리구 > 무처리구 순이었다. 처리구에 따른 질소 이용 효율은 혼합유박 처리량이 증가할수록 증가하는 경향이었다. 토양 특성의 경우 pH, OM, $Av.P_2O_5$, $NH_4-N$ 및 Ex.K의 경우 유의적인 차이는 없었으나 EC 및 $NO_3-N$은 혼합유박의 밑거름 시용량이 증가할수록 약간 증가하는 추세였다. 이를 통해 수량을 위한 혼합유박 밑거름 적정시용량은 밑거름 150% 처리인 것으로 판단된다.

Keywords

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