Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Recommendations of NPK Fertilizers based on Soil Testing and Yied Response for Radish in Highland

고랭지 무 재배지 토양검정에 의한 NPK 시비기준량

  • Lee, Gye-Jun (Highland Agriculture Research Center, National Institute of Crop Science, RDA) ;
  • Lee, Jeong-Tae (Highland Agriculture Research Center, National Institute of Crop Science, RDA) ;
  • Zhang, Yong-Seon (National Academy of Agricultural Science, RDA) ;
  • Hwang, Seon-Woong (Department of Rice and Winter Cereal Crop, National Institute of Crop Science, RDA) ;
  • Park, Chol-Soo (KT&G Central Research Institute) ;
  • Joo, Jin-Ho (Kangwon National University)
  • 이계준 (농촌진흥청 국립식량과학원 고령지농업연구센터) ;
  • 이정태 (농촌진흥청 국립식량과학원 고령지농업연구센터) ;
  • 장용선 (농업과학기술원) ;
  • 황선웅 (국립식량과학원 벼맥류부) ;
  • 박철수 (KT&G 중앙연구원) ;
  • 주진호 (강원대학교)
  • Received : 2008.12.28
  • Accepted : 2009.05.13
  • Published : 2009.06.30
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Abstract

An attempt was made to provide the most reasonable fertilizer recommendation for radish crop based on soil analysis data and yield response to the N, P, K fertilizers, which was obtained from field experiments on 2004 in highland, 850 meters above the sea level. Optimum times of NPK application to past application amount based on soil test were 0.90-0.77-0.50 for radish. The adjusted NPK recommendation models of highland soil were made by adding the application times to past application methods which were based on chemical properties of soil. The revised models for fertilizer application were recommended to decrease the amount of N, P, K by 10-23-50% for radish in highland. In application to total cultivation area, 2,546ha for radish, saving amounts of NPK fertilizers with these adjusted recommendation in comparison with past application levels will be 244.4 tons for radish. Using the optimal application amounts for radish, we will can reduce agricultural pollution without affecting crop yields.

고랭지 농업환경에 적용할 수 있는 토양검정에 의한 시비기준을 설정하고자 고랭지 무에 대하여 2004년에 표고 850m의 사양질 밭토양에서 N, P 및 K 비료의 시비수준을 달리하여 포장시험을 수행하였다. 고랭지 무에 대한 안정 목표수량을 생산하기 위한 NPK의 적정 시비배율은 현행 평난지 토양검정 기준량 대비 각각 0.90, 0.77 및 0.50배이었다. 산출된 적정 시비배율을 조정된 시비추천식에 적용하여 고랭지 여름작물인 무에 알맞은 시비추천식을 설정할 수 있었다. 설정된 시비추천 방법에 의한 무의 N, P 및 K 시비량에 작물의 재배면적을 적용하여 산출한 고랭지 무 재배시 화학비료의 절감량은 질소, 인산 및 칼리의 경우 각각 71.3, 0 및 173.1톤으로 총합계 244.4톤이나 되었다. 따라서 평난지의 토양검정시비량보다 10~50%를 절감할 수 있는 새로운 시비추천식을 적용하면 고랭지 무의 생산성도 유지하면서 고랭지 농업환경 오염을 경감할 수 있을 것이다.

Keywords

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