귀화식물 왕도깨비가지 기관별 수용성 추출액의 Allelepathy 효과

송창길,김태근,송진영,하영삼,현도경,차진우,이희선 제주대학교 아열대농업생명과학연구소 2014 아열대농업생명과학연구지 Vol.30 No.1

大豆의 倒伏이 主要形質에 미치는 影響

宋昌吉 제주대학교 1991 논문집 Vol.33 No.-

大豆의 倒伏이 主要形質에 미치는 影響을 究明하기 위하여 水原 114號ㆍHill 및 白川을 供試하여 試驗한 結果를 要約하면 다음과 같다. 1. 草長ㆍ分技數ㆍ生體重은 倒伏이 甚할수록, 그리고 倒伏時期가 빠를수록 有意하게 增加하였다. 2. 節數ㆍ株當萊數ㆍ株當粒重 및 100粒重 等은 倒伏時期가 늦어짐에 따라, 그리고 倒伏程度는 적을수록 有意性있는 增加傾向을 보였다. 3. 收量은 倒伏으로 因해 크게 減少되는 傾向을 나타내었는데, 특히 開花期 以前의 倒伏이 收量에 크게 影響을 미친다는 事實이 認定되었다. 4. 主根伸長量과 根重에 있어서는 倒伏時期가 늦을수록, 그리고 倒伏程度가 적어질수록 各各 增大 되었다. 5. 脂肪含量은 幼苗期倒伏區의 含量이 제일 적고, 倒伏時期가 늦어질수록, 그리고 倒伏의 程度가 緩慢해질수록 增加하였다. This study was carried out to investigate the effect of lodging on major agronomic characters of soybean. Three cultivars including Hill were sown and tested. The results obtained can be summarized as follows: 1. Plant height, the number of branches per plant, and fresh weight were significantly increased by the severity of lodging and the significance was recognized by the lodging stages. 2. Numbers of node, pod, seed, and seed weight per plant and 100 seed weights were increased when lodging stages become late but the degree of lodging was significantly increased when the lodging was sightly changed. 3. The yield was sharply reduced by the lodging. Especially, the lodgings of early growth and flowering stage were severely affected by them. 4. In the length of main root and dry weigth of root they got long and heavy with the lodging stage getting late and with the lodging stage being sligtly changed respectively. 5. The concentration of fat in seedling stage which was lodged was the lowest and slightly increased with getting late. Whereas, it was increased with the slight changes in lodging.

窒素分施에 따른 Subangrass계 雜種의 生育, 收量 및 飼料成分 變化

趙南棋,朴成埈,姜榮吉,宋昌吉 濟州大學校 亞熱帶農業硏究所 1998 亞熱帶農業硏究 Vol.15 No.-

ABSTRACT Two sudangrass hybrids were treated with the split application (1, 2, 3, 4, and 5 times) of 25 kg/lOa of N to determine the effects of split N application on the growth, yield and feed composition of sudangrass hybrids in Cheju. Pioneer 988 headed five days earlier than Pioneer 931 did. The number of days from planting to heading averaged across the two hybrids was delayed from 73 to 79 days as the frequency of the split N applications was increased from one to five times. At heading, Pioneer 988 was about 8cm taller than Pioneer 931 was. Plant height was increased with increasing the frequency of split N application. As the frequency of split N application was increased, stem weight, leaf weight, root length, and root weight were significantly increased. Fresh forage yield averaged the two hybrids was increased from 5,505 to 7,391 kg/lOa as the frequency of the split N application was increased from one to five times. As the frequency of the split application was increased, crude fat and crude protein contents also were increased but crude fiber content was decreased.

사회보장 재정추계 주요 과제

송창길 한국보건사회연구원 2023 보건·복지 Issue&Focus Vol.437 No.0

濟州島 人工草地 植生의 經時的 變化에 관한 硏究 : 草種의 李節 및 年次的 變化 The Seasonal and Annual Changes in Species

金翰琳,趙南棋,宋昌吉 제주대학교 1981 논문집 Vol.13 No.-

本 硏究는 濟州道 改良牧草地에 있어서 草種組成의 季節 및 年次的 變動狀態를 調査한 結果이며 그 槪要는 다음과 같다. 1. 改良年度別 草種의 變動狀態는 1975年 草地에서 37種이었으나 年數가 經過함에 따라 種數가 增加되어 1980年 草地에서는 130種이었으며 每年 季節에 따르는 種의 數는 夏期에 가장 많았고 春期에는 種의 分布가 가장 적었다. 2. 改良年度別 生育型의 分布變動狀態는 1975年 草地에서 一年生 12種, 多年生 25種, 木本 1種이었으나,年數가 지남에 따라 每年 增加되어 1980年 草地에서는 一年生 42種, 多年生 88種, 木本 5種이었으며, 每年 季節에 따르는 生育型에 있어서는 一年生은 秋期에서, 多年生은 夏期에서 가장 많은 種이 分布되었고 木本雜草는 季節에 變化가 없었다. This study was conducted to investigate the seasonal and annual changes in species on the impoved pastures in Cheju Island. The results are as follows : 1. The annual changes in the number of intruding weed species were obsered. 33 weed species were found in 1975 and increased year after year to 127 species in 1980. The seasonal changes of species by year were also observed. In summer more species ranged than in any other seasons and the number of species growing in spring was found fewer than in other seasons. 2. The distributional changes in annual and perenial plant were brough on. 10 species of annual plant, 23 species of perennial plant, and one species of arbor were found in 1975 and increased respectively year by year to 44 species (annual plant), 86 species(perennial plant) and 5 species (arbor) in 1980. The seasonal changes in ecology by year showed a tendency that more species of annual plant ranged in autumn, and more perennial plants in summer than in any other season. But there is no change in the species of arbor.

濟州大 附屬農場 活用 硏究實態

姜奉均,趙南棋,宋昌吉 濟州大學校 亞熱帶農業硏究所 1998 亞熱帶農業硏究 Vol.15 No.-

窒素施用에 따른 율무의 主要特性變異

宋昌吉 제주대학교 1991 논문집 Vol.32 No.-

主稈重과 總乾物重은 12kg施用區에서 높게 나타났고, 이보다 많거나 적은 處理區에서는 낮게 나타났다. 葉中 葉綠素含量은 窒素를 增施할수록 含量이 增加되었다. 100粒重, 1ℓ重, 收量에 있어서는 12kg處理區에서 높게 나타났고, 이보다 많거나 적은 區에서는 낮게 나타났는데, 收量에 대한 曲線의 方程式은 y=99.778+80.573x-11.807x²이었다. 粗蛋白質은 12kg處理에서, 粗脂肪은 18kg處理에서 높게 나타났으나, 粗澱粉은 施用量이 많아질수록 오히려 減少하는 傾向이었는데, 이에 따른 曲線의 方程式은 y=57.782-3.853x+0.393x²이었다. 草長은 葉長, 葉幅, 節間長, 葉綠素含量과는 正의 相關을 보였으나 粗澱粉과는 負의 相關을 나타내었고, 葉綠素含量은 粗澱粉과 負의 相關을, 收量은 粗澱粉과 正의 相關을 나타내었다. 本 試驗結果로 미루어 볼 때 율무에 대한 窒素의 適正施肥는 10a當 18kg內外로 思料된다. 窒素施用을 10a當 0, 6, 12, 18, 24kg으로 달리하였을때 율무의 主要特性變異를 究明하기 위하여 遂行한 結果를 要約하면 다음과 같다. 窒素增施에 따라 草長, 葉長, 葉幅, 節間長은 增加하는 傾向이었다. This study was csrried out to investigate the effect of nitrogen application on major agronomic characteristics in adlay plant(Coix agrestis(non LOUR.) MIQ). Nitrogen was applied to the soil at the rate of 0, 6, 12, 18, and 24kg per 10a. The results obtained can be summarized as followers; As the amount of nitrogen fertilization was increased, plant height, leaf length, leaf width, and internode length increased. On the plot applicated with nitrogen level(12kg/10a), the dry matter weight of main culm and per plant was observed to have increased. On the other hand, it reduced on the application plot with nitrogen level (12kg/10a, or little more). Chlorophyll content of its leaf tended to increase with the rise in the level of nitrogen application. In point of the respose of grain yield, weight of 1 liter, and 100 grains to amount of nitrogen application, they were observed to be the highest on the leavl of nitrogen application(12kg/10a). Significant regression equation of yield was y=99.778+80.573x-11.807x². The crude protein was the most increased on the plot with the amount of nitrogen application(12kg/10a). But the crude fat tended to decrease with the rise in the level of nitrogen application. Significant regression equation of the crude fat was y=57.782-3.853x+0.393x². The plant height was positively correlated with leaf length. leaf width, internode length, chlorophyll contents of leaves, but it was negative correlations with crude starch. The yield was significantly correlated with crude starch. The chlorophyll content of leaves had negative correlations with crude starch, but yield was positively correlated with crude starch. This experiment showed that the adequate fertilizing of nitrogen was about 18kg per 10a.

裁植距離와 遮光程度가 半夏의 生長反應 및 塊莖收量에 미치는 影響

宋昌吉,李承俊,趙南棋 제주대학교 아열대농업생명과학연구소 1995 아열대농업생명과학연구지 Vol.12 No.-

가을감자 生産性向上을 위한 綠肥作物栽培와 太陽熱 土壤消毒의 效果

송창길,박양문,강봉균,Song, Chang-Khil,Park, Yang-Mun,Kang, Bong-Kyoon 한국유기농업학회 1998 한국유기농업학회지 Vol.7 No.1

제주지역에서 前作物로 綠肥作物을 재배하여 破碎$\cdot$耕耘하고 폴리에칠렌 투명비닐로 1997년 8월 5일부터 8월 29일까지 太陽熱土壤消毒후 가을감자를 재배한 결과를 요약하면 다음과 같다. 멀칭기간중의 토양깊이 10cm에서 최고지원은 $42^{\circ}C$였다. 綠肥作物栽培 및 멀칭에 의해 토양의 pH 및 有機物含量은 높아졌다. 前作物로 재배한 綠肥作物의 生體收量은 sudangrass 交雜種, 콩, 알팔파 순으로 많앙Tejs 반면 멀칭 太陽熱土壤消毒후 가을감자의 地上部生體重, 塊莖收量 등의 생육형질은 콩 + 가을감자재배구가 가장 양호한 것으로 나타났다. 이상의 결과로 볼 때 여름철 고온기에 綠肥作物栽培후 비닐 피복 太陽熱消毒에 의해 작물의 생육형질이 향상될 뿐만 아니라 土壤消毒의 가능성도 있을 것으로 생각된다.

濟州道 改良草地에 있어서 띠(Imperata cylindrica)의 季節的 年次的 變化

趙南棋,金翰琳,宋昌吉 제주대학교 1983 논문집 Vol.16 No.-

本 硏究는 濟州道 中山間地帶의 自然草地(Imperata cylindrica/Zoysia japonica type)를 開墾한 後 1 ha當 Dactylis glomerata 17kg, Festuca arundinacea 7kg, Lolium multiflorum 2kg, Trifolium repens 2kg의 導入牧草를 混播(28kg)하여 家畜放牧에 利用되고 있는(1977∼1982年) 改良草地를 對象으로하여, 띠(Imperata cylindrica)植生의 季節的ㆍ年次的變化過程을 調査한 結果를 要約하면 다음과 같다. 1. 每年 季節에 따르는 草長ㆍ收量ㆍ密度ㆍ被度 等 植生의 季節的 變化에 있어서는 秋期에 가장 優勢하였고, 春期에는 低調하게 나타났다. 2. 改良後 年度別 草長의 變化는 1年草地에서 34.26cm이었으나 점차 增加되어 6年草地에서는 49.35cm이었는데, 이 變化狀態의 回歸方程式은 y=-0.13x²+4.41x+28.50이었다. 3. 年數의 經過에 따르는 密度의 變化는 1年草地에서 0.76%였던 것이 年數가 지남에 따라 급격히 增加되어 6年草地에 이르러서는 32.97%로 나타나고 있는데, 이 變化를 y=0.10x²+0.32x-2.30의 回歸方程式으로 表示할 수 있었다. 4. 草地造成 以後 年次別 被度의 變化는 1年草地에서 1.05%, 2年 1.38%, 3年 2.46%, 4年 17.11%, 5年 27.56%, 6年草地에서 36.66%로 每年 增加(y=1.40x²-2.36x+1.39)되었다. 5. 收量의 年次的 變化는 1年草地에서 1.95kg이었으나 年數가 지남에 따라 점차 增加되어 6年草地에서는 1,107.35kg으로 나타났는데, 이 變化狀態를 y=29.11x²+53.52x-154.67로 表示할 수 있었다. This study was conducted to examine the yearly and seasonal changes of Imperata cylindrica on the improved pasture of the mountain districts around Mt. Halla in Cheju Island. For this study, the researcher had investigated for six years from 1977 to 1982 the improved pasture which had been used for grazing from 1977 to 1982. The pasture was reclaimed from native grassland. The mixed seeds of 17kgs' Datylis glomerata, 7kgs' Festuca arundinacea, 2 kgs' Lolium multiflorum and 2kgs' Trifolium repens were sowed per 1 ha. The results of this study are the following : 1. The seasonal changes of Imperata cylindrica : its length, weight, density and coverage are heighest in Autumn, and are lowest in Spring every year. 2. The yearly change in the length of Imperata cylindrica : its length is gradually increased from 34.26 cm in the first year after the reclaimation to 49.35 cm in the 6th year. This change can be represented by the regression equation, Y=-0.13x²+4.41x+28.50. 3. The yearly change in its density : its density is rapidly increased from 0.73% in the first year to 32.97% in the sixth year. The results of this change can be obtained with the regression equation, Y=0.10x²+0.32x-2.30. 4. The yearly change in its coverage : its coverage is increased year by year (1.05% in the 1st year, 1.38% in the 2nd year, 2.46% in the 3rd year, 27.56% in the 5th year, and 36.66% in the 6th year). This change can be calculated with regression equation, Y=1.40x²-2.36x+1.39. 5. The yearly change in its weight : the weight is also increased year after year from 1.95 kg in the first year after reclaimation to 1107.35kg in the sixth year. This change can be calculated with the regression equation of y=29.11x²+53.52x-154.67.