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      • 忠北道內 葉煙草 病蟲害의 發生 및 被害狀況調査

        魯斗鉉,李重基,朴然圭,安長憲,盧載榮,朴相一 충북대학교 엽연초연구소 1971 煙草硏究 Vol.1 No.-

        a) This investigation was carried out in Chung-Buk province in order to obtain the basic data for divising an effective measure of controling tobacco plant pests and insects, and for establishing the cropping system to produce better and more tobacco by thoroughly inquiring into the out break of tobacco plant pests and insects and the suffering conditions. b) Out-break rates of the main diseases and insects. As for the disease, obvious differences were shown among the kinds of disease and among the districts. Rates of out break of tobacco plant diseases were in the following order : brown spot, granville wile and virus for kinds of diseases : and Chungju-Miwon, Eumsong Jinchon, Choongju-Jechon, Poeun, Okchon, and Jeung pyong for districts. Significant differences were recognized between the region of Chongju-Miwon and the region of Poeun, Okchon, Jeungpyong, and between the region of Jinchon-Eumsong, and the region of Okchon, Jeung pyong, while the differences among other regions were insignificant. As for the insects, outbreak rate of tobacco moths amounted to 50. 2% of tobacco plants, and differences were to be seen among regions. There were differences among the region of Chung ju-Miwon, Jinchon-Eumsung and four other regions while no differences were shown among the regions of Okchon, Poeun, Jeung pyong-Choonfiu and Jechon c) Rate of injuries by those plant pests and insects were as follows: i) Diseases : quantity‥‥‥‥‥‥‥‥‥11.52% quality ‥‥‥‥‥‥‥‥‥18.42% ii) Isects : quantity‥‥‥‥‥‥‥‥‥‥‥1.53% quality‥‥‥‥‥‥‥‥‥‥‥‥1.64% Over all rates of injuries amounted to 13.05% in yields and to 20.06% in quality. d) Tendencies of outbreak and rates of injuries by each plant and insects were as follows: 1) Diseases a) Brown spot Out break-rate of brown spot was the highest, 37.8% among all. No differeances were shown by the number of successive cropping years of tobacco plants on the same land. However, highly significant differences were found among different districts. Districts of Chonaju-Miwon showed highest rate of outbreak 79.5%, As to the rates of injuries in yield by this disease, differences were shown among districts and among kinds of leaves. And same tendencies were to be seen for the rates of injuries in qualities. Especially there were highly significant defferences among kinds of leaves. Rate of injuries both in yield and in quality was highest in medium leaves and in the order of main leaves, low leaves and high leaves. Some of the rates of injuries in different districts are shown below : ◁표 삽입▷ (원문을 참조하세요) The average rails of injuries caused by this disease (Brown Spot) were 1.00% in yield and 1.85% in quality. b) Virus disease Average rate of outbreak of virus was 15.2%, next to brownspot, and was not related with the number of successive cropping years of tobacco on the same land. But each district showed different infection rate of virus; for instance, the outbreak-rate of virus in Jinchon Eumsong district amounted to 29.7%, which was the highest. Rate of injuries in yield by virus showed no obvious difference among districts but there were highly significant differences according to the degrees of infection: highest rate of injuries occured at outbreak index "5." Rates of injuries in quality showed highly significant differences among districts and degrees of infection: Several injuries were found in Jinchon Eumsong district, being 15.57% and at outbreak index "5" The average rates of injuries by this disease were 4.18%, in yield and 8.25% in quality injuries in yield was next to the highest caused by granville wit and injuries in qualities was the highest among the injuries caused by other diseasess and insects investigated. c) Granville wilt It was only granville wilt among the diseases which were investigated that showed sign ificant difference of outbreak rate and of rate of injuries in yield owing to the number of successive years of cropping tobacco on the same land differences in rates of injuries were insignificant in each districts, but the more the years of continious cropping of tobacco the more the outbreak rate and loss in yield were observed. Outbreak rate of this disease was 9.9% and highest rate of injuries in yield was 9.9% found on the land of 20 years successive cropping of tobacco. Average rate of injuries caused by granville wilt were 5.95% in yield, the highest among the diseases and insects, and 7.91% in quality, the next the highest injuries caused by virus. 2. Injuries caused by insects: a) Tobacco moths and Tobacco bug. Outbreak rate of mouths was 50.2% showing no difference owing to the number of successive cropping years of tobacco on the same land. But high differences in outbreak rate were found among districts : for instance, in Chongju-Miwon district, outbreak-rate amounted to 78% which was the highest percentage. Rates of injuries in both yield and quality showed great differences among districts and kinds of leaves. Greatest injuries occured in Chongju-Miwon district being 2.55% in yield and 2.59% in quality. Main leaves suffered the most injuries and next were in the order of medium leaves, high leaves and low leaves. Outbreak rate of tobacco bug was 2.9%, and the rate of injuries was 0.02%, only in quality, very slight, Average rates of loss caused by insects in the whole districts were 1.45% in yield and 1.55% in quality. b) Nematode. This survey was carried out in order to reveal tendency of the inhabitation density of nematode according to successive cropping of tobacco plants on the same land. Inhabitation density of nematode was found to be increasing remarkably with the years of successive of tobacco. In course of 5 to 6 years of successive cropping of tobacco plants on the same land, inhabitation density increased gradually and reached the maximum density at 11 to 20 years of successive cropping. Among districts, difference was found between the new production area and the old production area. As describe above, out break of granville wilt of tobacco plants increased with the number of successive cropping years. And with the same number of successive cropping years, outbreak of granville wilt increased with the inhabitation density of nematode. c) The effect of brown spot, anthracnose, wild fire etc, upon the yield and quality of tobacco plants, which have not studied in this investigation will be studied later. And the later study will also include concrete survey on the time and outbreak conditions of tobacco disease and insects, countermeasures against successive cropping of tobacco, and relation between inhabitation density of nematode outbreak diseases, etc.

      • 黃色 葉煙草 主産地 土壤에 對한 調査硏究 : 淸州 葉煙草 生産組合管內 土壤에 對하여 For Fields of the Tobacco producers' Cooperative area in Cheungju

        趙成鎭,卞珠燮,陸昌洙 충북대학교 엽연초연구소 1974 煙草硏究 Vol.2 No.-

        With the aim of surveying soil characteristics of main Y.S.A-producing fields, the results obtained from the soils in the Cheungju-Cheungwon-gun producers' cooperative area are summarized as follows : 1.The results obtained from the present survey of soils were not consistent with the originalgrades designated as A, B and C by the producers' cooperative. 2.Particularly in terms of the relationship between cultivation periods(yrs) and yields, the yields in normal-productive soils decreased gradually with time, whereas no such tendency was observed in the low-productive soils. Pest damages were noticeable in the case of the low-productive fields. 3.Physical properties showed that the depths of surface soils were, on average, over 20cm in both normal and low-productive fields, the former being a little deeper. In soil texture, in general most of them were coarse sandy soils, low-productive fields abounding in clayey soils. 4.Chemical properties indicated that both normal and low-productive soils were strongly acidic, Mostly the latter having lower pH's than the former to be pH 4.6~5.0. Proportionally, exchangeable base and degree of base saturation of low-productive soils were lower than those of normal soils. This seems to be the cause of low-productivity in terms of soil itself. Contents of total nitrogen, available phosphorus, and humus were very low and far below the average contents of field soils of this country. No difference was recognized between normal and low-productive soils.

      • 잎담배生産과 裁培環境과의 關係에 關한 解析的 硏究 : 第十五報 土壤水分, 日射條件 및 摘芯時期가 잎의 形質에 미치는 影響 Part XV Effects of Soil Moisture, Solar Radiation and Time of Topping on the Leaf Characteristics of Tobacco Plants

        盧載榮,卞珠燮,申周植,李鶴洙 충북대학교 엽연초연구소 1980 煙草硏究 Vol.7 No.-

        This experiment was conducted to study the effects of soil moisture, solar radiation and topping time on the leaf characteristics of tobacco plants. The results are summarized as follows : 1.In the case of soil moisture deficient treatment, yield in the plot treated deficient soil moisture at early growth stage is more than that at later part of maximum growth stage. 2.Yield in the plot shaded at early growth stage is high and shading at maturing time made less the leaf area, weight of a leaf and yield. Shading before topping made low the percentage of dry matter. 3.There was little difference in yield at diferent topping time, but interaction between soil moisture content and shading effected significantly on the leaf characteristics.

      • 거미류에 生態에 관한 硏究 VII : 담배밭 거미相에 관한 硏究

        安長憲 충북대학교 엽연초연구소 1993 煙草硏究 Vol.14 No.-

        This survey was conducted to investigate the distribution and seasonal fluctuation of the spiders in the tobacco fields in Chung-buk area. Results obtained are summarized as follow: 1.Spiders collected in the tobacco fields were 13 species belonging to 6 families. 2.Three species such as P. astrigera P. hedini and T. subadultum were the most abundant. 3.Ecological habits of the above three species will be studied in the future.

      • 栽植密度 및 型式의 相異가 잎담배 收量構成要素 變異에 미치는 影響

        申周植,盧載榮 충북대학교 엽연초연구소 1976 煙草硏究 Vol.3 No.1

        The main purpose of this research was how the plant spacings and types of row had effects on yields and yield constitutional elements of leaf tobacco Hicks. This experiment was carried out in 1972 and 1973. The results obtained are as follows: 1.There were little effects on fertilizer increased which were supplied 30% of fertilizer additionally. 2.In case of low plant density, weight of unit leaf area and weight of a leaf were significantly heartier than those weight at high density. 3.There were little effects of treatments on the leaf weight per a plant and percentage of dry matter. 4.Studying the difference of leaf position, there were obvious difference on the yield constitutional elements. And there were some variations of the effects on the leaf position between the two years, 1972 and 1973. 5.According to climate condition between 1972 and 1973, remarkable differences among treatments are shown. In 1973, the condition of climate for the tobacco plant is better than that of 1972, the variation differences of some characteristics for the yields constitutional elements were small. 6.For the practical purpose, some of the plant spacings and types of row in this experiment may be used for flue-cured tobacco culture.

      • 煙草植物의 生理, 生態에 關한 硏究 : 第一報 培養液中의 K₂O濃度가 煙草植物의 生長 및 發育生理에 미치는 影響 I. Physiological Effects of K₂O Concentration in Culture Solution on Growth and Differentiation of Tobacco Plants

        裵吉寬,盧載榮 충북대학교 엽연초연구소 1977 煙草硏究 Vol.4 No.-

        The experiment was conducted in order to investigate the influence of K2O levels on growth and differentiation of tobacco plants. Experiment plots were comported of 6 K2O levels (0, 8, 40, 80, 160 and 320ppm) which consisted of 3 different periods of treatment (whole growing period (I), secondary bed period (II), and field period (III). For this study, Bright Yellow tobacco (Nicotiana Tobacum L) was cultured by a renewal water culture system in a green house. 1.Stem elongation was accelerated in accordance with increasing K2O levels, especially in the early stage, and the effect was most significant in block I. 2.The increase of visible leaves showed the same tendency to stem elongation, but the total number of differentiated leaves were not different between each plots. 3.Days to flowering were significantly reduced according to the increase of K2O levels in block I and II, expecially block I. However there was no difference in block III. 4.The dry weight of harvested leaves was significantly increased from 0 ppm to 80 ppm in block I, while it was increase to 320ppm in block II and III. 5.The higher the K2O concentration, the lower the T/R ratio was. This was especially remarkable in block I. Roots continued to grow more than stems and leaves in higher K2O levels (160 and 320 ppm). 6.When K2O was administered in culture solution of from 0 ppm to 80 ppm the alkaloid content increased. However, there was no alkaloid increase when K2O solution of from 80 ppm to 320 ppm wer administered. 7.Conversely, the total nitrogen content followed the opposite tendency to decrease with the rise of the alkaloid content. 8.Soluble carbohydrate content was not regularly changed in accordance with the increase of K2O levels.

      • 煙草植物의 加里營養에 관한 硏究

        裴吉寬 충북대학교 엽연초연구소 1980 煙草硏究 Vol.7 No.-

        This experiment was conducted to investigate the effect of K2O on the water cultured tobacco plants in a green house. In the case of different condition of nitrogen, iron and environment, the effects of different levels and periods of treating time of K2O on the growth, development, dry matter production, yield and quality (chemical components ) were studied. 1.The higher the level of K2O was, the larger the dry matter production and growth were. The differences of these were significantly large in the high level of nitrogen, but not significant in the low level of nitrogen. 2.The flowering and maturing were remakably accelerated by the increased K2O supply under the condition of low temperature and short day, but they were not accelerated under high temperature and long day. At the low (deficient) level of nitrogen, the increased K2O supply delayed flowering. 3.The number of differentiated leaves showed little difference among the plots of different K2O levels, but it decreased at the low level of K2O and nitrogen. 4.The yield increased rapidly as the amount of K2O increased until 80ppm under the condition of low temperature and short day, however there was little difference among 80, 160 and 320ppm of K2O. On the other hand the yield increased until 200ppm of K2O supply under the condition of high temperature and long day. The effect of increased K2O supply on the yield was enhanced by the increased nitrogen supply. 5.The dry weight of the root was increased with the increased K2O supply and this effect was enhanced by the high nitrogen level. T/R ratio was decreased significantly by the increased K2O supply. 6.The more the K2O supply was, the higher the content of soluble sugar and K2O in the leaves were, and the lower the total nitrogen was. The content of nicotine in the leaves was low in the low level of K2O (0,8 and 10ppm), but that showed little difference among the plots of standard (80ppm) and high (150, 200ppm) levels of K2O. Ash content showed little difference among the plots of different levels of K2O. 7.There was positive correlation between the content of soluble sugar and K2O in the leaves, and negative correlation between the content of nicotine and K2O in the leaves. 8.It was concluded that the effect of K2O supply on tobacco Plants were changeable in accordance with the environmental condition of cultivation.

      • 腋芽利用에 關한 硏究 : 第1報 腋芽發育이 黃色種잎담배의 諸形質에 미치는 影響 The Effect of Sucker Growth on the Characteristics of the Flue-cured tobacco plant

        盧載榮,李鶴洙 충북대학교 엽연초연구소 1979 煙草硏究 Vol.6 No.-

        This experiment was conducted to study the effects of sucker growth on growth, yield constitutional elements, yield and chemical compositions of flue-cured tobacco. The results obtained are summarized as follows; 1.The growth of four sucker loaves had a effect on decrease in the leaf length and width, number of harvested leaf, dry weight per a plant and increase in soluble sugar content of main plant. 2.Total dry weight summed main plant's up sucker's showed remarkable increase, for the growth of Sucker vesulted mainly in increase number of harvested leaf. 3.The growth of four sucker loaves increased in S. Sugar/Nicotine ratio and decreased T-Nitrogen/Nicotine ratio, so leaf quality was increased. 4.The leaf length and width, dry weight of a leaf and nitrogenous compounds contents of sucker leaves in increased fertilization plot were higher, but soluble sugar content was lower than decreased fertilization plot. 5.In comparison the characteristics of sucker leaves with the leaf of main plant, there were no difference in leaf sizes dry weight of a leaf, but exhibited lower ik S. Sugar content and higher in nitrogenous compound. contents thant main plant. Also, T-Nitrogen/Nicotine ratio below 1.0 was such level as main plant. 6.It was confirmed that the yield and leaf quality of main plant could be increased by means of suckor growth, when flue-cured tobacco plant renewed vegetative vigor.

      • 煙草栽培에 있어서 土壤微生物劑 利用에 關한 硏究

        陸昌洙 충북대학교 엽연초연구소 1977 煙草硏究 Vol.4 No.-

        In order to investigate the effects of the Soil Bacteriological Fertilizer (S.B.F) on Tobacco plant cultivation, the normal compound fertilizer containing urea (10-15-20) mixed with various amounts of S.B.F. was treated to the Y.S.A. and Hicks tobacco field. The T0 plot was treated with only compound fertilizer containing urea (control plat), the T1 plot with 5g/plant S. B. F and compound fertizer containing urea, and the T2 plot with 10g/plant S.B. F. and compound fertilizer containing urea. 1.In the growing period, the tobacco plants did not grow normally, as the amount of rainfall was exteemely little; The amount of rainfall was 16 mm (Mary; 61 mm below average), 21mm(June: 86 m below average) and 27mm(July: 244mm). In the T0, T1 and T2 plots of Y.S.A. and Hicks tobacco plants, the length and width of the largest leaf, the Stem length, the stem diameter, the number of leaves and the position of leaves did not show the significant differences by the effect of S.B.F. 2.Yields. The T2 (Y.S.A) and T1 (Hicks) plots were the heaviest of all plots in dry matter weight (10a) with 160.95kg and 185.97kg. The purchase prices of the T2 (Y.S.A. and Hicks) plot were the highest with 5,963.97 won and 67,503.48 won respectively. The effects of the S.B.F. in all plots were some what recognized, but not significantly. 3.The content of chemical components The nicotine contents were the highest in the T1 (Y.S.A.) and T2 (Hicks) plots. Meanwhile, the T2 (Y.S.A.) and T0 (Hicks) plots were the greatest in total-N, and the T2 (Y.S.A.) and T1 (Hicks) plots in protein-N. The amount of total sugar is the largest in T2 plots (Y.S.A. and Hicks), wherras T0 (Y.S.A.) and T1 (Hicks) plots were the highest in ash content. The contents of chemical components of the leaves were gradually increased from the lugs to the tips, but not significantly.

      • Potassium염이 궐련의 연기성분 이행량에 미치는 영향

        諸炳權,李鶴洙 충북대학교 엽연초연구소 1999 煙草硏究 Vol.17 No.-

        This study was conducted to evaluate the temperature decreasing of burning cone by adding the potassium salt to reconstituted tobacco sheet. To find effect of the potassium on the temperature, we examined the delivery smoke components and the distribution of aroma components effected tabacco taste by electronic nose system. The results are summarized as follows : 1.Burning cone temperature was decreased 100℃ that was identified by DTG curve. 2.When 3% potassium salt was added to reconstituted tobacco sheet, TPM, CO, tar, and nicotine in smoke delivery were lowed as 11%, 16%, 11%, and 16%, respectively and Co/tar ratio was decreased from 1.81 to 1.70. 3.By adding the potassium salt, carbonyl compounds in smoke, such as propionaldehyde and formaldehyde, were decreased as 17% and 5%, respectively And also acrolein, acetone and acetaldehyde were decreasing up to 9%. There was no change of phenolic compounds delivery. 4.Adding the potassium salt to reconstituted tobacco sheet is desirable for cigarette manufacture by no change of distribution and delivery of TPM and aroma which was the main factors of tobacco taste.

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