• Title/Summary/Keyword: 수도포장

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Studies on Plant Parasitic Nematodes in the Fields of Codonopsis lanceolata (더덕(Codonopsis lanceolata) 재배지 기생선충의 발생상황)

  • 정도철;한상찬
    • Korean Journal of Plant Resources
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    • v.16 no.3
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    • pp.200-206
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    • 2003
  • This study were conducted to assess plant­parasitic nematodes infesting Codonopsis lanceolata. Ten kinds of plant­parasitic nematode gem including Meloidogyne and Pratylenchus were identified in 34 localities of C. lanceolata fields in three provinces in Korea. Meloidogyne, a dominant genus, was found in 97% localities and showed high average density as 1,700 nematodes per 300$m\ell$ soil. Its average density was 10 times higher in upland field than in paddy field.

모바일 방송통신융합 서비스 DMB2.0

  • Lee, Seung-Yeop
    • Information and Communications Magazine
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    • v.26 no.10
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    • pp.32-39
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    • 2009
  • 본고에서는 지상파DMB에서 방송소비자에게 TV/Radio 위주의 단방향 서비스에서 환골탈태하여 그동안 많은 사람들이 발전방향으로 기대하였던 모바일 방송통신 융합 서비스인 DMB2.0 (DMB2.0이란 명칭은 확정된 명칭이 아니라 아직 가칭이지만, 2.0이 의미하는 DMB에 서비스를 접목하는 측면에서 굳이 새 이름이 필요하겠냐는 게 대다수의 의견이다)에 대해서 단순히 데이터방송을 하나 추가하면서 너무 거창한 포장을 하는 것이 아니냐는 생각이 있을 수도 있겠으나, 그렇지 않음을 서비스 기획 측면에서 알아본다.

원산지가 다른 배추를 이용하여 담근 김치의 품질특성

  • 김진숙;최은영;한귀정;김행란;전혜경
    • Proceedings of the Korean Society of Community Living Science Conference
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    • 2004.05a
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    • pp.169-169
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    • 2004
  • 최근 김치가 핵가족화와 외식산업의 발전 등에 따라 가정이 아닌 공장에서 제조/유통되고 있는데, 수입된 포장 김치는 단체급식소나 외식업체에 값싼 가격에 대량 공급되고 있으며 그 양도 점차 늘고 있다. 이에 국내 배추 재배농가나 김치 생산업체의 경쟁력이 약화될 위기에 처해 있을 뿐만 아니라 우리 고유의 김치 맛이 잃어버릴 수도 있으므로 국산 김치와 중국산 김치의 정확한 품질비교가 필요한 실정이다. (중략)

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Effect of Plant Spacing on the Competitive Ability of Rice Growing in Association with Various Weed Communities at Different Nitrogen Levels (잡초군락형별로 본 질소시비량과 재식밀도가 수도의 경합력에 미치는 영향)

  • S. C, Kim;Keith, Moody
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.25 no.4
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    • pp.17-27
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    • 1980
  • All types of weed community became dominant by Monochoria vaginalis (Burm.) Presl. as the nitrogen level increased. The importance value (IV.) of M vaginalis rapidly increased with increasing nitrogen level whereas the LV. of other weed species decreased. At the 10 $\times$ 10cm plant spacing, M. vaginalis was almost totally suppressed at all nitrogen levels. At the 20 $\times$ 20cm plant spacing, the degree of suppression declined with increasing nitrogen level. At the 30 $\times$ 30cm plant spacing, there was no suppression of M vaginalis at the highest nitrogen level. The yield obtained at the 10 $\times$ 10cm plant spacing when M. vaginalis was present was not significantly different from that obtained from the weed free plot for all rice cultivars while it was significantly reduced by M vaginalis competition at the 20 $\times$ 20cm and 30 $\times$ 30cm plant spacings. The difference in yield caused by M vaginalis competition was primarily due to a reduction in the number of panicles at all nitrogen levels. There was a high negative correlation between grain yield and weed weight at heading. The yield reduction due to weed competition varied depending upon the nitrogen level.

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Effect of the Alternation of Lowland-Upland Field and the Cropping Pattern on Weed Population (논밭 윤환재배시(輪換栽培時) 작부유형별(作付類型別) 잡초발생(雜草發生) 양상(樣相))

  • Yoo, C.H.;Yang, C.H.;Kim, J.G.;Rhee, G.S.;Han, S.S.
    • Korean Journal of Weed Science
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    • v.15 no.4
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    • pp.298-304
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    • 1995
  • This study was carried out to make the most of them as the fundamental data for reasonable weed control when population of weeds was observed in the alternated fields of lowland and upland. The annual and the perennial paddy weeds in the continuous paddy rice field remarkably decreased when compared to that in the alternated field of paddy rice and soybean. The longer was the duration of upland field condition, the less was the population of lowland weeds and the more was the population of upland weeds. Biennial weeds in the contiuous paddy rice field were less than that in the rotated field of paddy rice and soybean, and this tendency was clear in Alopecurus aequalis Sobol. In the continuous cropping of paddy rice, population of biennial weeds in the culverted field was higher than that in the unculverted one, but in the continuous cropping of soybean this tendency was vice versa.

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Development of Prediction Model of Frost Penetration Depth on Pavement in Korea (포장도로의 실측값을 활용한 한국형 동결깊이 예측모델 개발)

  • Hong, Seung-Seo;Kim, Young-Seok;Kim, Hak-Seung
    • Journal of the Korean Geosynthetics Society
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    • v.9 no.3
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    • pp.47-56
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    • 2010
  • Korea is known to have seasonal frozen ground during a winter season due to climatic and ground conditions. Temperatures below $0^{\circ}C$ cause pavement failure by frost heaving and thaw settlement. A frost protection layer has been constructed in pavements to avoid damage caused by frost action. Anti-frost design methods in Korea have been adopted, which is established in U.S. and Japan. However the characteristics of soils in Korea are different and there are no reasonable modifications to accommodate these characteristics. Therefore, adequate pavement design procedures including seasonal frost action, as well as construction and maintenance practices are required. In this paper, the frost penetration depths along national roads in Korea are presented based on field measurement over several years (1991~2010). The frost penetration depths are analyzed with respect to the Provinces of Korea and sunny/shaded areas.

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Effect of Tillage Methods on Rice Yield and Soil Properties under Different Soil Textures (토성별 경운방법이 벼 수량과 토양특성에 미치는 영향)

  • 허봉구
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.38 no.3
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    • pp.290-295
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    • 1993
  • To evaluate rice yield and changes of soil properties, 3 tillage methods including no tillage was tested in different soil textures, such as silty clay, sandy loam and silt loam fields. Hwaseongbyeo was transplanted by machine at May 28. Water and soil temperature of no tillage were lower than other plots, but differences of temperature were not larger in different treatments. Mean water requirement in depth of sandy loam field was larger than other textures, but that of silty clay field was smaller. The water requirement in depth of no tillage was larger by 1.4~2.2mm / day than the other plots. In the silty clay field, mineral contents, except Na$_2$O content, of rice plant of no tillage plot at the harvesting stage was higher than the other treatments. The rice yields in the no tillage plot were decreased by 18% in sandy loam, by 7% in silty clay and by 1% in silt loam respectively than the power tiller plots.

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Effect of N-K Compound Fertilizer Top Dressing of Paddy (수도(水稻)에 대(對)한 질소(窒素), 가리(加里) 복비추비(複肥追肥) 효과시험(效果試驗))

  • Oh, Wang-Keun;Rhee, Kang-Man;Kim, Woo-Jin
    • Korean Journal of Soil Science and Fertilizer
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    • v.12 no.3
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    • pp.133-139
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    • 1979
  • In order to evaluate the effect of developed Nk compound fertilizers, 17-0-17 granular and powder, and 17-0-14 granules in comparison with single fertilizers, urea and potassium on rice (Oryzae sativa) ; cultivar, Milyang 23, (Orizae Sativa), a field experiment was carried out. Results obtained are as follows : 1. The top dressing of NK compound fertilizers tended to produce higher paddy yield than that of single fertilizers; urea and patasstum muriate. 2. The absorption of potassium and nitrogen by rice plant from the plot of NK granular compound fertilizer, 17-0-17, was greater than from the plots the absorption of those elements received other types of ferilizers and application method The absorded K/Ca+Mg ratio in milli equivalent basis in plant was also appeared to be in same order as the absorption of nitrogen and potassium. 3. From the results of present study it seemed necessary to evaluate the NK compound fertilizer for the top dressing at effective tillering stage of rice as well.

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Studies on the appearance, distribution varietal resistance and disinfection of white tip Aphelenchoides besseyi Christie of rice in Korea (청도군이서면에 발생한 수도심고병선충의 전염경로와 온탕처리방제시험)

  • Jeon-Woo Bang
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.10
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    • pp.51-56
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    • 1971
  • To make certain of the white tip infection on rice, nematodes isolated from the rice seeds grown at Chongdo-goon Isu-myun and Kimje-goon Chooksan-myun were artificially inoculated and their pathway was studied. Also, studies were made for the hot water seed treatment as a measure of white tip control at different levels of water temperature and their germinablity was checked. The results are summarized as follows; 1. Causal nematodes survive in the paddy soil and cause white tip year after year. 2. Causal nematodes can survive in the rice seeds as long as the seeds loose their germinability. 3. Causal nematodes can disseminate throught the irrigation water. 4. Causal nematodes can disseminate through the soil move from a place to other place. 5. Causal nematodes can infect all of the parts of the rice and they can disseminate through any of the parts of rice. 6. The hot water treatment at 5$0^{\circ}C$ for 60 minutes were not effective controlling causal nematodes. But, either treatment of at 55$^{\circ}C$ for 15-20 minutes or at 6$0^{\circ}C$ for 10-15 minutes were effective and germination of seeds was not affected.

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Freshness of 'Fuji' Apples Packed MA Film Treated with Acid and Anti-fogging Agents (산 및 결로방지 처리한 기능성 MA포장으로 포장한 '후지' 사과의 신선도)

  • Park, Hyung-Woo;Ryu, Na-Hee
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.19 no.1
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    • pp.43-50
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    • 2013
  • This study investigated the effect of functional MA films (FMA) masterbatched by zeolite powder treated with 1 N HCl solution and anti-fogging agent (CA) on the freshness extension of 'Fuji' Apples. Preference, weight loss, total ascorbic acid, sugar content, acidity, change of gas composition in package were evaluated during storage at $15^{\circ}C$. After 150 days of storage, the weight loss of LLDPE film (control, L) apples was 0.4%, and that of apple in FMA film (CA) was 1.1%. Total ascorbic acid content of apples in control after 150 days was 2.09 mg%, and those of apple in FMA film was 2.94 mg%. The titratable acidity of apple in FMA film was higher than that in control, while soluble solids content of packages was lower than that in control after 150 days. Ethylene gas adsorbability in control package was 192.2 ppm and those in FMA film was 165.6 ppm. Overall, apples in FMA film was better than that of control. It was verified that apples packed with LLDPE film(control) lasted about 130 days, while those with FMA film lasted about 170 days. Also, FMA film treated with anti-fogging agent achieved no significant effect on freshness extension compared to non-treated film, but quality of 'Fuji' Apples was improved by anti-fogging agent when compared to that of non-treated anti-fogging agent.

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