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수도(水稻)에 대(對)한 질소시비반응(窒素施肥反應)의 품종간(品種間) 차이(差異)
이춘수,신철우,곽한강,이강만,안윤수,박준규,Lee, Choon-Soo,Shin, Cheol-Woo,Kwak, Han-Kang,Lee, Kang-Man,Ahn, Yoon-Soo,Park, Jun-Kyu 한국토양비료학회 1985 한국토양비료학회지 Vol.18 No.2
수원지방(水原地方)의 농가포장(農家圃場)에서 1978년(年)~83년(年) (6개년(個年)) 식양토(埴壤土)인 보통답(普通畓)에서 수도품종별(水稻品種別) 질소(窒素) 시비반응(施肥反應) 및 질소(窒素) 생산효율(生産效率) 등(等)을 검토(檢討)하였는바 그 결과(結果)를 요약(要約)하면 다음과 같다. 1. 2차회귀식(次回歸式)을 적용(適用), 최다수량(最多收量)을 생산(生産)하기 위(爲)한 질소시비(窒素施肥) 최적량(最適量)은 13.9g~28.0kg/10a 범위(範圍)로 품종(品種)에 따라 차이(差異)가 크므로 질소내비성(窒素耐肥性)을 고려(考慮)하여 품종(品種)을 선정(選定), 재배(栽培)함이 필요(必要)하였다. 2. 질소(窒素) 시비최적량(施肥最適量)이 높았던 품종(品種)에서는 수확기(收穫期) 질소함량(窒素含量)(경엽(莖葉)) 및 총질소(總窒素) 흡수량(吸收量)(경엽(莖葉)+곡실(穀實))이 증가(增加)하였으나 최적량(最適量) 시용시(施用時) 시비(施肥) 및 흡수질소(吸收窒素)의 생산효율(生産效率)과 질소이용율(窒素利用率)은 오히려 감소(減少)하였다 3. 품종별(品種別) 무질소구(無窒素區) 정조수량(正租收量)에 대(對)한 질소(窒素) 최적량(最適量) 시용시(施用時) 정조수량(正租收量)의 증수효과(增收效果)를 증수율(增收率)로서 볼 때 29~121%의 범위(範圍)로서 품종간(品種間) 질소응수(窒素應酬)의 차이(差異)가 현저(顯著)하였다. 4. 질소(窒素) 최적량(最適量) 시용시(施用時) 질소응수(窒素應酬)가 큰 품종(品種)은 수확기(收穫期) 총질소(總窒素) 흡수량(吸收量), 시비(施肥) 및 흡수질소(吸收窒素)의 생산효율(生産效率)과 질소이용률(窒素利用率)이 높았다. An attempt to evaluate yield response and efficiency of N fertilizer was made with the data obtained from various rice cultivars during 1978 to 1983. 1. The optimum rate of N fertilizer for maximum yield varied from 13.9 to 28.0 kg/10a with rice varieties. 2. The cultivars with high optimum N levels were high in N content (straw) and N uptake (straw+grain) at harvesting stage, but low in production efficiency and use efficiency of N. 3. The yield increment at the optimum rates of N in comparison with no N application among the rice varieties were 29-101%. 4. The cultivars with hish yield increment at optimum rate were high in the N content (straw+grain), and production efficiency at harvesting stage.
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토양검정(土壤檢定)에 의한 채소류(菜蔬類)의 삼요소(三要素) 시비량(施肥量) 조정(調整)
이춘수,허범량,송요성,곽한강,Lee, Choon-Soo,Huh, Beom-Lyang,Song, Yo-Sung,Kwak, Han-Kang 한국토양비료학회 1994 한국토양비료학회지 Vol.27 No.2
An attempt to adjust the standard levels of NPK fertilizers application was made with the analytical data of soil and the results of field experiments on 18 vegetable crops 1. There was a remarkable accumulation of available $P_2O_5$ and exchangeable K of soil in the periods of 1980~1990 comparing with 1960~1970. 2. New fertilizer recommendations based on the accumulation of soil components enabled to decrease fertilizer requirements of major vegetable crops. It was founded that if such new recommendations were adopted by the farmer, 0~6.0kg N/10a, 0.7~12.3kg $P_2O_5/10a$ and 2.0~9.0kg $K_2O/10a$ could be saved without affecting the yield of crops 3. The formulas of fertilizer application for crops were corrected in order to determine optimal rate of each farmer field according to chemical properties of soil.
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A Study on Laver Industry’s Global Export Competitiveness
이춘수 한국무역보험학회 2018 무역보험연구 Vol.19 No.4
In 2017, laver exports claimed the top spot previously held by tuna exports. laver is an important item that can create K-Food food culture in addition to Korean Wave of K-POP. Recently, demand for laver in countries including China, Japan, and Thailand have been steadily increasing. Despite various political situations, China has steadily increased demand for Korean laver. Thailand is contributing to the export growth of Korean laver, because of the trend of new Korean Wave mainly in laver snacks. The propose of this study is to review international marketing plan for Korean laver to have global export competitiveness. First of all, literature on laver industry is reviewed and current trends of laver industry in China, Japan and Thailand is explained. Segmentation strategy, Targeting strategy, Positioning strategy. as well as strategies for Product, Price, Place, and Promotion strategies are presented. Through the STP strategy and the 4P strategy of this study, SWOT analysis for the laver industry was conducted. Through the analysis, various ways of enhancing export competitiveness of laver industry in Korea is suggested. In particular, international marketing strategy of laver industry and future strategic measures are suggested.
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한국 국가이미지와 기업이미지간의 상호효과에 대한 실증연구
이춘수,이장로,서민교 한국통상정보학회 2006 통상정보연구 Vol.8 No.4
IThis research meets with empirical results in pursuit of aim as below mentioned. Firstly, it gets a line on two-way effects which have an effect on both (the country image and corporate image) by using the corporate image for the study of the country image. After making an analysis of the empirical test, found out that the corporate image has influence upon the country image significantly. Also found out that the country image has an effect on the corporate image powerfully. Therefore, it effects an inspection of evidence that the country image and corporate image have significantly positive concern, each other. Secondly, it is offering the way to use the culture marketing as grasping the mediating effects, which culture difference has influence upon the country image and the corporate image. The mediating effects show that the country image has influence on the corporate image more as culture difference is bigger.
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국내 디지털 복합기 시장의 현황과 전망 -올 디지털화 약 4.7%로 관심 미미 사무환경 급변 속 크게 성장할 것
이춘수 한국광학기기산업협회 1999 光學世界 Vol.11 No.5
한 대로 복사기, 팩스, 프린터의 3가지 기능을 다하는 디지털복합기는 고객의 생산성 향상과 원가 절감에 크게 기여한다. 사무환경이 신속한 정보전달과 높은 생산성 창출을 요구하며 빠르게 변하고 있는 가운데 시장 전망이 밝다. 국내 사무기 시장은 아직 디지털화율이 빈약하지만, 1999년 약 3,000대(디지털화 비율 약 4.7$\%$로)에 이어서, 2000년에는 약 7,000대(디지털화 비율 약 10$\%$)로 비약적
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