Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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The Characteristics of Growth and Green Manure Yield by Different Kinds of Landscape Crops Cultivated in Summer in Upland Soil

  • Cho, Hyeoun-Suk (Crop Environment Research Division, National Institute of Crop Science (NICS), RDA) ;
  • Seong, Ki-Yeung (Crop Environment Research Division, National Institute of Crop Science (NICS), RDA) ;
  • Park, Tae-Seon (Crop Environment Research Division, National Institute of Crop Science (NICS), RDA) ;
  • Seo, Myung-Chul (Crop Environment Research Division, National Institute of Crop Science (NICS), RDA) ;
  • Kim, Mi-Hyang (Crop Environment Research Division, National Institute of Crop Science (NICS), RDA) ;
  • Kang, Hang-Won (Crop Environment Research Division, National Institute of Crop Science (NICS), RDA)
  • Received : 2014.08.25
  • Accepted : 2014.10.24
  • Published : 2014.10.31
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Abstract

Landscape crops have decorated its surrounding landscape by being cultivated from spring to late fall. Recently, landscape crops are starting to get the limelight as crops that can be cultivated in large area farmlands. Therefore, we examined the growth characteristics of landscape crops, green manure yield and nitrogen production of crops that are cultivated during summer, which are sunflower, cosmos, sunnhemp and sesbania, in order to select crops that can be utilized as landscape crops and green manure crops. The height of landscape crops increased when the harvest time was later. Especially, sunnhemp, cosmos, sunflower and sorghum grew over 100cm. The days to flowering of sunnhemp and cosmos were 50 and 53 days each, and their flowering period of more than 50 days were long. The days to flowering of sunflower, which was 52 days, was short, and its flowering period, which was 21 days, was also short. When the harvest time was later, the green manure yield and nitrogen production of all crops increased. Individually, the green manure yield was higher in sunnhemp, sorghum, sunflower, with $7.2{\sim}7.5Mg\;ha^{-1}$, and was lowest in sesbania. The nitrogen production was higher in sunnhemp, with $168.1kg\;ha^{-1}$ Therefore, as seen in its flowering characteristics, green manure yield and nitrogen production, sunnhemp had the best green manure and landscape effects among the landscape crops for summer.

경관작물은 봄부터 늦은 가을까지 도로변, 하천변, 화단에 재배되어 우리 주변 환경을 아름답게 꾸며주는 역할을 수행하였으나 최근에는 대면적의 농경지에 재배되면서 넓은 면적에 재배가 가능한 작물들이 각광을 받기 시작하였다. 따라서 여름에 재배되는 작물 중에서 경관작물과 녹비작물로 이용 가능한 작물을 선발하고자 해바라기, 코스모스, 네마장황, 네마황, 세스바니아, 수수의 작물 생육특성, 녹비수량 및 질소생산량을 조사하였다. 경관작물의 초장은 수확시기가 늦을수록 증가하였으며 특히 네마장황, 코스모스, 해바라기, 수수는 100 cm 이상으로 컸다. 네마장황과 코스모스의 개화소요일수는 각각 50일, 53일로 짧아 가장 빨리 개화가 시작되었으며 개화기간은 50일 이상으로 길었다. 해바라기는 개화되는데 52일이 소요되어 짧았으나, 개화기간이 21일로 짧았다. 녹비수량과 질소생산량은 모든 작물에서 수확시기가 늦어질수록 증가하였다. 녹비수량은 네마장황, 수수, 해바라기에서 $7.2{\sim}7.5Mg\;ha^{-1}$로 가장 많았고 세스바니아에서 가장 적었으며, 질소생산량은 네마장황에서 $168.1kg\;ha^{-1}$으로 가장 많았다. 따라서, 개화특성, 녹비수량, 질소생산량을 기준으로 볼 때 여름용 경관작물 중 네마장황이 녹비와 경관 효과가 가장 우수하였다.

Keywords

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