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수도 기계이앙 재배에서 질소시비가 건물생산 및 수량에 미치는 영향
金丁坤,李善龍,金鍾昊,林茂相,趙正翼 韓國作物學會 1987 한국작물학회지 Vol.32 No.1
수도 기계이앙 재배에 있어 관행 시비법과 추비시기 및 비율를 달리하여 적정 분시방법을 밟히고자 '85년 호남작물시험장(이리)에서 동률벼를 공시하여 시험을 실행한 결과를 요약하면 다음과 같다. 1. 엽신질소함량은 기비중점시비(T1 , T2 )에서는 최고분얼기에 수비중점 (T4 , T5) 및 5회분시(T7)에서는 감수분열기에서 높았다. 2. 출수이후의 CGR, RGR, NAR은 5회분시구(T7)가 가장 컸다. 3. 각 생육시기별 CGR과 NAR, NAR과 RGR, CGR과 RGR 간에는 유의적인 정의 상관이 있었으며 생육시기가 진전됨에 따라 상관계수가 커지는 경향이었다. 4. 수량에 대한 각 생육시기별 CGR의 상여도는 출수후의 CGR이 가장 컸다. 5. 수량은 기비중점(T1 , T2 ) 보다 수비중점(T4 )및 기비 30%후 4회 분시구(T7)에서 높았다. To search for the optimal nitrogen application method for the machine transplanting to Dongjinbyeo, compared to conventional method, in the various methods of nitrogen split application at different growth stages of rice plant. This experiment was performed at Honam Crop Experiment Station, in 1985 year. The results were as followed; the nitrogen contents of leaf blade was the highest at maximum tillering stage under the conventional method and reduction division stage under the nitrogen top-dressing at panicle initiation and 5 times split application of nitrogen for the whole rice growth stages. CGR, RGR and NAR after heading was highest under 5 times split application of nitrogen for the whole rice growth stages. Relationships between CGR and NAR, NAR and RGR, CGR and RGR showed the positive correlation significantly at each rice growth stage, respectively, and showed more high correlation according to further rice growth stages. The degree of contribution of CGR to rice grain yield was the highest at 20 days after heading. Rice grail: yield was higher under top-dressing of nitrogen at panicle initiation and basal application (30%) + 4 times equal dispensing top-dressing after basal application of nitrogen than conventional method.
金鎭淇,金丁坤 全北大學校 1984 論文集 Vol.26 No.-
The present study was aimed to check types of morphologically abnormal seedlings of barley (Hordeum vl\ulgare L.) seeds occurring in laboratory tests. 13 barley cultivars were collected and tested for abnormal seedling occurrence. On average, 25% of abnormal seedings were found. The abnormal seedling percnntage was comparde sith other vigour indices and there were close correlationships among them. Through the experiment, most frequently found catergory of abnormality was both plumular and root system abnormal which occupied more than 50% of the total abnormal seedlings, then plumular abnormality, followde by root system abnormality. Overall more than sixty possible abnormal seedling types were observed. The abnormalities most frequently found were in the class of deformed or unbalanced seeding, for example short or severly short, then in damaged and decayed.
河龍雄,朴文雄,柳龍煥,金廷坤 북방농업연구소 2016 北方農業硏究 Vol.39 No.1
Examine the major crops of wheat, corn and soybean for acreage, yield per unit area and planting area in China, such as the production of the field and study the costs and profitability of these crops. Also it examined the per capita consumption of staple foods and urban and proportion, the area cultivated with arable land utilization, and Chinese imports into these three crops of the rural population in China. Examine the wheat, corn and soybean crop varieties development agencies, and can cultivated varieties, such as bar who investigated comprehensively, and forecast the impact will have on our country. As a result, wheat and corn are already achiving food self-sufficiency but in recent years the trend of increasing import of these crops in China. And soybean is circumstances that are purchased for one-third of world production. Therefore, the possibility of these crops to be introduced in Korea is determined to be a little. Recent changes to two from one family, one child at a national policy of China, and increases the population, would be increased consumption of food. Therefore, if not a few have an impact on world grain prices, it is expected to be the indirect effects on supply and demand of these three crops far our country.