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Recommendation of the Amount of Nitrogen Top Dressing based on Soil Nitrate Nitrogen Content for Leaf Perilla (Perilla frutescens) under the Plastic Film House

토양 질산태질소 함량에 따른 시설 잎들깨 질소 웃거름시비량 추천

  • Kang, Seong-Soo (Soil & Fertilizer Management Division, National Academy of Agricultural Science, RDA) ;
  • Lee, Ju-Young (Soil & Fertilizer Management Division, National Academy of Agricultural Science, RDA) ;
  • Sung, Jwa-Kyung (Soil & Fertilizer Management Division, National Academy of Agricultural Science, RDA) ;
  • Gong, Hyo-Young (Soil & Fertilizer Management Division, National Academy of Agricultural Science, RDA) ;
  • Jung, Hyung-Jin (Soil & Fertilizer Management Division, National Academy of Agricultural Science, RDA) ;
  • Park, Chang-Hwan (Department of Functional Crop, NICS, RDA) ;
  • Yun, Yeo-Uk (Chungcheongnamdo Agricultural Research & Extension Services) ;
  • Kim, Myung-Sook (Soil & Fertilizer Management Division, National Academy of Agricultural Science, RDA) ;
  • Kim, Yoo-Hak (Soil & Fertilizer Management Division, National Academy of Agricultural Science, RDA)
  • 강성수 (농촌진흥청 국립농업과학원 토양비료관리과) ;
  • 이주영 (농촌진흥청 국립농업과학원 토양비료관리과) ;
  • 성좌경 (농촌진흥청 국립농업과학원 토양비료관리과) ;
  • 공효영 (농촌진흥청 국립농업과학원 토양비료관리과) ;
  • 정형진 (농촌진흥청 국립농업과학원 토양비료관리과) ;
  • 박장환 (농촌진흥청 국립식량과학원 두류유지작물과) ;
  • 윤여욱 (충청남도농업기술원) ;
  • 김명숙 (농촌진흥청 국립농업과학원 토양비료관리과) ;
  • 김유학 (농촌진흥청 국립농업과학원 토양비료관리과)
  • Received : 2011.11.13
  • Accepted : 2011.12.14
  • Published : 2011.12.31

Abstract

This study was conducted to recommend nitrogen (N) top dressing based on soil nitrate content for leaf perilla under forcing culture in Gumsan-gun and Milyang-si. Experimental design was the randomized complete block design for five N fertilization levels and conventional fertilization. Dry weight, nitrogen uptake, and the node number of leaf perilla were measured and soil nitrate contents were analyzed monthly. The amount of nitrogen uptake for growth of a node with two leaves was $2.2kg\;10a^{-1}$ for Gumsan site and $3.5kg\;10a^{-1}$ for Milyang site. Lower level of soil nitrate N concentration for standard N fertilization was determined as $10mg\;kg^{-1}$ for both sites. Soil depth, bulk density, utilization rate of soil nitrate N, and the amount of N uptake for growth of a node with two leaves were considered for calculation of upper level of soil nitrate N concentration. The upper levels of soil nitrate N concentration for no N fertilization were determined as $30mg\;kg^{-1}$ for Gumsan site and as $40mg\;kg^{-1}$ for Milyang site. Consequently the recommendation equations for the N top dressing were Y=-0.157X+4.71 for Gumsan site and Y=-0.1667X+6.6667 for Milyang site.

재배기간이 긴 잎들깨 시설 촉성재배 조건에서 질소시비 수준별 시험을 통하여 토양의 질산태질소 함량에 따른 질소 웃거름시비량 결정기준을 설정하였다. 잎들깨 주산단지인 금산과 밀양 두 지역에서 각각 1개의 시설하우스에서 질소시비량 5수준과 관행구를 난괴법 3반복과 4반복으로 각각 실시하였다. 생육시기별로 매달 건물중과 질소흡수량, 마디생장량을 조사하였고, 토양질산태질소를 분석하였다. 금산포장의 마디당 질소 요구량은 $2.2kg\;10a^{-1}$, 밀양포장은 $3.5kg\;10a^{-1}$로 조사되었다. 토양질산태질소의 하한기준은 금산포장과 밀양포장 모두 $NO_3$-N $10mg\;kg^{-1}$로 설정하였다. 상한기준 설정은 토심 15 cm, 용적밀도 $1.2Mg\;m^{-3}$, 토양 중 질산태질소의 이용율 70%를 적용하여 잎들깨 1마디에 필요한 질소요구량을 충족하는 수준으로 결정하여 금산포장과 밀양포장 각각 $30mg\;kg^{-1}$$40mg\;kg^{-1}$로 설정하였다. 따라서 금산지역은 Y=-0.157X + 4.71에 의해, 밀양지역은 식 Y=-0.1667X + 6.6667에 의해 잎들깨 1마디 생육에 필요한 질소 웃거름 시비량을 결정할 수 있었다.

Keywords

References

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  2. Evaluation of the Amount of Nitrogen Top Dressing Based on Ground-based Remote Sensing for Leaf Perilla (Perilla frutescens) under the Polytunnel House vol.49, pp.5, 2016, https://doi.org/10.7745/KJSSF.2016.49.5.598