Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

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

Recommendations of NPK Fertilizers based on Soil Testing and Yied Response for Carrot in Highland

고랭지 당근재배지의 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 : 2008.12.05
  • Accepted : 2009.11.03
  • Published : 2009.12.30
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Abstract

An attempt was made to provide the most resonable fertilizer recommendation for carrot crop based on soil analytical data and yield response to the NPK fertilizers, which was obtained from field experiments on 2003 in highland, 850 meters above the sea level. Optimum times of N, P, K application to current application methods based on soil test were 0.75-0.50-0.50 for carrot. The adjusted N, P, K 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 25-50-50% for carrot in highland. In application to total cultivation area, 135ha for carrot, saving amounts of NPK fertilizers with these adjusted recommendation in comparison with past application levels will be 23.0 tons for carrot. Using the optimal application amounts for carrot, we will can reduce agricultural pollution without affecting crop yields.

고랭지농업 환경에 적합한 당근재배지의 토양검정 시비기준을 설정하고자 표고 850m의 사양질 밭토양에서 N, P 및 K 비료의 시비수준을 달리하여 포장시험을 수행하였다. 고랭지 당근에 대한 안정 수량을 생산하기 위한 NP-K의 적정 시비배율은 현행 평난지 토양검정 기준량 대비 각각 0.75-0.50-0.50배이었다. 산출된 적정 시비배율을 현행 시비추천식에 적용하여 고랭지 여름작물인 당근에 알맞은 시비추천식으로 도출해 낼 수 있었다. 도출한 시비추천 방법에 의한 고랭지 당근의 NPK 시비량과 당근의 재배면적을 적용하여 산출한 화학비료의 총 절감량은 질소-인산-칼리의 경우 8.1-5.0-9.9톤으로 총합계는 23.0톤이었다. 이는 현행 평난비 시비량의 25~50%를 절감할 수 있는 양으로 고랭지에 본 연구결과의 시비추천식을 적용하면 고랭지 당근의 생산성도 유지하면서 고랭지 농업환경 오염을 경감할 수 있다.

Keywords

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