• Korean Journal of Soil Science and Fertilizer
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• v.40 no.1
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• pp.4-11
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• 2007

There have been increasing concerns about decreasing crop productivity due to salt accumulation in greenhouse soils. The objective of the study was to investigate the impact of rice straw and woodchip application to a salt accumulated greenhouse soil on crop productivity and soil quality. The application of rice straw (RS) and woodchip (W) increased tomato yield and decreased blossom-end rot, and increased yield of Chinese cabbage compared with standard recommended fertilization ($204-103-122kg\;ha^{-1}\;N-P_2O_5-K_2O$ for tomato and $222-64-110kg\;ha^{-1}\;N-P_2O_5-K_2O$ for Chinese cabbage), while less soil residual nitrate, phosphatephosphorus, and potassium. In addition to the organic material application, fertilization reduction based on soil testing may also contribute to relatively low level of soil residual nutrients. Application of the organic material reduced soil bulk density presumably because of improved soil aggregation and structure, and increased biomass C and dehydrogenase activity. In comparison to rice straw, woodchip application resulted in higher crop yield, less amount of soil residual nitrate and lower soil EC, and greater biomass and dehydrogenase activity. The results obtained in this study indicateshowed that woodchip amendment along with reduced fertilization based on soil testing can be one of essential management practices for salt accumulated greenhouse soils.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1998.10a
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• pp.134-137
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• 1998

최근 고급 과채류에 대한 선호도가 높아짐에 따라 네트멜론의 재배가 증가되고 있는 추세이다. 그러나 주산단지에서는 고정된 시설에서 주년 재배하므로서 연작으로 인한 토양병해충 발생이 증가되고 염류집적 등의 문제가 심화되고 있다(박, 1995). 멜론 재배기술이 비교적 앞서 있는 일본에서는 이러한 연작장해를 회피하기 위한 방법으로 격리상이나 차근시트 등을 이용한 근권제한재배에 관한 연구가 다년간 이루어져 왔다. (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2003.04a
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• pp.74-77
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• 2003

시설재배토양은 노지에서와는 달리 비료의 용탈이 잘 이뤄지지 않기 때문에 작물에 따른 시비조절이 어렵다. 또한 대부분의 시설재배토양의 염류집적은 작물생산의 불안정한 요인으로 작용하고 있다. 최근 시설재배에서의 시비는 기비를 시용한 후에는 관비로 추비를 시용하고 있는데, 시비관리체계가 정립되어 있지 않아 농가마다 경험에 의존하여 시비관리되므로 비료를 과다하게 시용하기 쉽다. (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2003.04a
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• pp.119-122
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• 2003

호접란은 개화기가 길고 독특한 모양의 꽃과 화색으로 부가가치가 높은 작물로서 소비와 생산이 매년 증가하고 있으나 재배기간이 2, 3년 정도가 되어 자본회수가 느리고 노동력 소모가 많다. 그리고 관행적인 두상관수에 의해 소실되는 물과 비료의 양이 많아 대부분 생산이 시설내에서 이루어지는 호접란의 재배 특성상 시설내 염류집적 등의 문제가 발생할 수 있다. (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2000.10b
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• pp.44-47
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• 2000

참외는 대부분 플라스틱하우스내에 소형터널을 설치하여 보온하는 형태로 재배되고 있으며, 연작하므로써 뿌리혹선충을 비롯한 각종 토양전염성 병해충의 피해가 많아지고 염류가 집적되는 등 재배상 많은 문제점이 발생되고 있다. 특히 참외를 장기재배하는 성주 등 경북지역에서는 뿌리혹선충으로 인해 생육이 불량하고(박 등, 1995a; 황 등 1999). 과실의 착과율이 떨어지는 등의 피해가 많이 발생되고 있다. (중략)

• 한국약용작물학회:학술대회논문집
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• 2008.05a
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• pp.99-100
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• 2008

• Korean Journal of Soil Science and Fertilizer
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• v.29 no.4
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• pp.360-364
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• 1996

Study on germination ratio and growth of lettuce affected by accumulated salt in vinyl house cultivation soils was investigated by pot test with EC 1.65. 3.50, 5.75. 7.15. 9.50 and 13.57 dS/m. (Germination rate of lettuce in different electric conductivity of 0, 2, 4, 6, 8 and 10 dS/m controlled with KCl were 96.7, 96.7, 87.8, 82.2, 52.2, and 27.8 % respectively. Standing ratio of lettuce in soil below 6 dS/m was more than 60% and in soils of 7.15, 9.50 and 13.57 dS/m they were 45, 32 and 31%, respectively. Growth and fresh weight of lettuces increased significantly in a low EC content soil. The fresh weight of lettuces in the soil of EC 3.50 dS/m was higher than that of the soil EC 1.65 dS/m by 22%, while another soils(EC: 5.75, 7.15, 9.50 and 13.57 dS/m) were decreased 3, 15, 60 and 62%, respectively. Relationship between soil EC and standing ratio of lettuce showed high correlation coefficient($r=-0.9057^{**}$). Therefore, in the field of vinyl houses concentrated salt, standing ratio of lettuce can be foreseen by soil EC [Y = -4.313x+ 82.95 (Y:standing ratio, x:soil EC)], also standing ratio and fresh weight of lettuce showed high correlation coefficient($r=0.8396^{**}$).

• Journal of Bio-Environment Control
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• v.15 no.4
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• pp.396-399
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• 2006

This study was conducted to investigate the desalinizing effect of some vegetable crops (beet, crown daisy, kale, lettuce, spinach, sweet com, and tomato) in salinized soil. The soil was treated with highly concentrated nutrient solutions and the growth of these crops was compared and soil salinity was monitored. The plant height of lettuce and crown daisy inhibited severely in with EC $5dS{\cdot}m^{-1}$ salinized soil. Soil EC level was the lowest in soil where tomato was cultivated followed by corn and kale. The residual level of $NO_3$ was higher in soils used for cultivation of corn, tomato, and kale, that of K was higher in soils used for cultivation of corn, tomato, and beet, and That of $P_2O_5$ was higher in soils used for cultivation of corn and tomato. Although the desalinizing effect was greatest by tomato and corn after 60 days of cultivation. Quality of the these crops was low and the cultivation periods of these crops overlapped with that of the main crops. Kale, on the other hand showed less growth inhibition in salinized soil, greatest desalinating effect based on fresh weight. In addition this crop only needs 30 days of cultivation period. Therefore, kale was most efficient crop in desalinizing considering crop quality, a short cultivation period, and nonoverlapping cultivation time with the main crops.

• Korean Journal of Organic Agriculture
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• v.21 no.4
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• pp.647-657
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• 2013

This experiment was done to evaluate the effects of green manure cropping in green house soil on the changes of soil nutrients and soil microorganisms. The biomass of green manure crop was the highest in ryegrass and nitrogen absorption was the highest in hairy vetch. After cropping, soil phosphate content was the lowest in ryegrass, however, biomass C was the highest of all the green manures. Nitrogen uptake of plant and nitrogen content of the soil after the experiment showed a negative correlation. Total N content of soil was increased in hairy vetch plot, but decreasing tendency showed in the ryegrass and common crabgrass plots. In this results are summarized that green manure cropping greatly reduced salt accumulation in green house.

• Proceedings of the Korean Society of Organic Agriculture Conference
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• 2009.12a
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• pp.303-303
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• 2009

시설재배지의 연작장해 원인이 토양병해 35%, 염류집적 30%로 분석하고 있으며, 시설재배지의 40% 이상이 토양EC 4dS/m 이상으로 작물생육에 부적합한 염류집적 토양으로 추정하고있다. 연작 및 집약적인 시설 재배의 불가피성을 감안한 시설재배의 장기적인 토양관리를 위하여 녹비작물을 활용한 물질순환적 토양관리를 위하여 토양 EC가 상이한 3개(<2.0dS/m, 2.0~6.0dS/m, 6.0dS/m<)토양에 거울철 휴한기에 호밀, 밀, 청보리를 재배하고 토양에 환원한 후 수박을 재배하여 시험을 수행하였다. 녹비작물의 건물중생산량은 호밀이 601~722kg/10a, 밀이 433~607kg/10a, 청보리가 648~690kg/10a 이었으며, 토양EC가 높은 토양(6.0dS/m<)에서 가장 낮은 경향이었다. 녹비작물 재배 후 토양의 EC는 호밀재배에서 24~44%, 밀재배에서 19~38%, 청보리재배에서 23~39% 경감효과가 있으며, 3개 토양 평균 각각 녹비작물별 토양EC 경감 효과는 호밀, 밀 그리고 청보리 각각 37%, 31% 및 35%의 경향을 보였다. 녹비작물 재배 후 수박을 재배한 결과 수박의 생육 및 수량성은 토양 및 녹비작물 간에 뚜렷한 차이를 보이지 않았으나, 무재배에 비해서는 녹비작물재배 토양에서 약간 양호한 경향을 보이고 있어, 장기적으로 계속 재배할 경우 토양의 물리화학성 개선 및 작부체계 개선에 의한 연작장해 경감 효과를 기대할 수 있을 것으로 사료되었다.