濟州 農業의 持續的인 發展 方向 : 過去 ·現在 ·未來의 檢討 A Tendency of Past, Present and Furture

姜景璿 濟州大學校亞熱帶農業硏究所 1997 亞熱帶農業硏究 Vol.14 No.-

栽植密度가 靑刈 大豆의 主要 形質 ·收量 및 飼料價値에 미치는 影響

趙南棋,宋昌吉,高東煥,玄京卓 濟州大學校亞熱帶農業硏究所 1997 亞熱帶農業硏究 Vol.14 No.-

本 硏究는 濟州道에 있어서 栽植密度가 濟州在來大豆와 남해콩의 主要形質과 飼料價値에 미치는 影響을 究明하기 위하여 栽植密度를 5×5cm, 10×10cm, 15×15cm, 20×20cm, 25×25cm, 30×30cm로 處理하여 試驗한 結果를 要約하면 다음과 같다. 1. 草長 變化에 있어서 濟州在來大豆는 15×15cm區와 10×10cm區에서 各各 119, 113cm로 길었으며, 남해콩은 5×5츠區와 10×10cm區에서 各各 103, 100cm로 긴 편이었다. 2. 莖直徑, 分枝數, 葉數, 莖重, 葉重 等의 形質은 濟州在來大豆와 남해콩 두 品種 공히 栽植密度가 낮아짐에 따라 漸次的으로 優勢하였다. 3. 生草收量에 있어서 濟州在來大豆는 5×5cm區에서 3493kg/10a, 남해콩은 2868kg/10a로 가장 많았으나, 栽植密度가 낮아짐에 따라 漸次的으로 減少되어 30×30cm區에서 濟州在來大豆는 1155kg/10a (Y^**=51.739X^2-832.29X+4270.5), 남해콩은 1067kg/10a이었다 (Y^**=41.416X^2-638.36X+3426.9). 4. 乾草收量은 5×5cm區에서 濟州在來大豆는 772kg/10a, 남해콩은 728kg/10a로 가장 많았으나, 栽植距離가 길어짐에 따라 漸次的으로 減少되어 30×30cm區에서 濟州在來大豆는 275kg/10a(Y^**=8.0179X^2-157.55X+928.4), 남해콩은 255kg/10a으로 減少되었다(Y^**=7.8857X^2-155.05X+891.76). 5. 組蛋白質과 粗灰分은 密植區에서 濟州在來大豆와 남해콩 모두 많은 편이었으나 栽植密度가 낮아질수록 減少되었으며, 粗脂肪과 組纖維는 栽植密度가 높을수록 많아지는 傾向이었다. 6. 10a當 生草收量에서 濟州在來大豆는 10a當 乾草收量, 粗蛋白質, 粗灰分과 正의 相關을 나타내었고, 남해콩은 草長, 10a當 乾草收量, 粗蛋白質, 可溶性無窒素物과 正의 相關을 나타내었다. This study was conducted to determine influence of planting density on main growth characters, yield and feeding value of Cheju native soybean and Namhaekong in Cheju-Do. The results are summarized as follows ; 1. Plant height of Cheju native soybean were longest at 15×15cm and 10×10cm treatments (119cm, 113cm) and that of Namhaekong were longest at 5×5cm and 10×10cm treatments(103cm, 100cm). 2. For both Cheju native soybean and Namhaekong stem diameter number of branches, number of leaves, stem weight and leaf weight were increased with decreasing planting density. 3. Fresh forage yield per 10a, for Cheju native soybean was greatest(3,493kg) at 5×5cm treatment and for Namhaekong was greatest(2,868kg) at 5×5cm treatment, each fresh forage yield per 10a of Cheju native soybean and Namhaekong were increased with increasing planting density. Fresh forage yield per 10a of Cheju native soybean was smallest(1,158kg) at 30×30cm treatment and that of Namhaekong was smallest(1,067kg) at 30×30cm treatment. 4. Dry forage yield per 10a of Cheju native soybean and Hamhaekong was greatest (772kg, 728kg) at 5×5cm treatment, respectively, dry forage yield was gradually reduced as planting density decreased ; Cheju native soybean produced dry forage yield of 275kg per 10a at 30×30cm treatment, and Namhaekong produced that of 255kg per 10a at 30×30cm treatment. 5. Crude protein and crude ash of both Cheju native soybean and Namhaekong were greater in the dense treatments. However, they were reduced with the decreased planting density. Crude fat and crude fiber were increased as the planting density decreased. 6. Cheju native soybean showed positive correlation between fresh forage yield per 10a and dry forage yield per 10a, crude protein and crude ash. But Namhaekong showed positive correlation between fresh forage yield per 10a and plant height, dry forage yield per 10a, crude protein, soluble nitrogen free extract.

제주지역 양봉농가의 사육실태 조사연구

김동식,강태숙 濟州大學校亞熱帶農業硏究所 2004 아열대농업생명과학연구지 Vol.20 No.1

A study was carried out using questionaries to investigate the current status ofapiculture in Jeju and to recommend futuredirections that may improve the industry. Results are summarized as follows: Seventy percent of beekeepers were older than 60 and those younger than 30 were less than 6%. Most beekeepers are middle and high school graduates (76%). and the rest are elementary (14%) and university graduates (10%). who were relatively younger. Those who have beekeeping experience of less than 10 years represent 18%. and those with experiences of 11-20. 21-30 and more than 30 years were 32. 20 and 20%. respectively. The reasons for taking job as beekeepers were that beekeeping was good for a second job (46%). can be done with small capital (16%) or good for a full-time job. Beekeeping as a second job, a full-time job or a side job represented 46. 30 or 24%. respectively. Tangerine production (79%) is part of their job for those that work on beekeeping as a second or side job. Most beekeepers move within Jeju (84%) for honey sources, but some move to the mainland (8%) or do not move at all (8%). Some Jeju beekeepers are for world open market (14%). but others are against it (28%). Many (58%) think that beekeeping is a good business. Most use family labor (58%). but used the hired (32%) or exchange (36%) labor for collecting honey. The main product of beekeeping was honey, but some beekeepers produced royal jelley (30%). pollen (16%) and propolis (8%). Recently, some (78%) produced bees to be sold for pollination of fruits and vegetables grown in greenhouses. generating a significant income. The main source of bee honey is rapeseed, tangerine and wild flowers, but sesame, buckwheat, Styrax japonica and cactus were also used. Honey was sold to neighbors and friends (46%) and through private channel (22%). but a few beekeepers sold honey through cooperatives or market. Beekeepers started feeding bees in early February (68%) or late January (16%). and ended feeding bees in mid-November (26%), late November (26%) or early November (18%). The winter feeding in Jeju was one month shorter than that done in the mainland. The most challenging problem in Jeju apiculture was selling products and choosing beekeeping places.

감귤농업관측시스템을 통한 경영합리화에 관한 연구

김경택,강지용 濟州大學校亞熱帶農業硏究所 1997 亞熱帶農業硏究 Vol.14 No.-

灌水量差異가 靑刈피의 主要形質 및 營養變化에 미치는 影響

趙南棋 濟州大學校亞熱帶農業硏究所 1991 亞熱帶農業硏究 Vol.8 No.-

本 硏究는 灌水量 差異가 (0.3, 0.6, 1.2, 2.4, 4.8kg/pot) 靑刈 피의 主要形質 및 營養含有量의 變化에 미치는 영향을 究明하기 위하여 0.14㎡의 Pot를 이용하여 濟州大學校 農科大學 溫室에서 遂行하였으며, 그 結果를 要約하면 다음과 같다. 1. 草長, 葉長, 葉數, 葉重, 葉直徑, 生草收量등의 地上部 生育形質과 根長, 根數, 根重 등의 地下部의 生育形質은 2.4kg의 觀水區에서 가장 우세하였으며, 4.8kg의 觀水區, 1.2, 0.6, 0.3kg의 觀水區 順位로 地上部의 生育形質 및 根 發育은 低調하였다. 그리고 出穗는 2.4kg의 觀水區에서 가장 빨랐(7월25일)으며, 0.3kg의 觀水區에서는 가장 늦게 出穗(8월6일)하였다. 2. 營養 含有量에 있어서는 蛋白質(13.71%), 室素(2.19%), 加里(2.90%) 成分은 0.3kg의 觀水區에서 가장 높은 편이었으며, 0.6, 1.2, 2.4, 4.8kg 觀水區 順位로 灌水量의 많아짐에 따라 漂白質, 室素, 加里 成分은 減少되었다. 그리고 燐酸, Mg 成分은 0.6kg 觀水區에서, Ca은 1.2kg의 觀水區에서 비교적 높은 편이었으나 4.8kg의 觀水區에 燐酸, Mg, Ca 成分은 낮은 편이었다. This study was carried out investigate the influence of irrigation water on agronomic characters and nutrition of soiling Japanese millet. Irrigation water was applied at the rate of 0.3, 0.6, 1.2, 2.4 and 4.8kg per pot. The results obtained were summarized as follows ; 1. The characters of shoot system (plant length, leaf length, number of leaves, leaf weight, stem diameter, fresh yield) and root system (root length, number of roots, root weight) was highest at 2.4kg irrigation water level per pot and then decreased at 4.8, 1.2, 0.6 and 0.3kg levels in that order. 2. Heading was earlier at 2.4kg irrigation water level in comparison with the other levels. 3. Nutrition value such as crude protein (13.71%), nitrogen (2.19%), potassium (2.90%) was highest at 0.3kg irrigation water per pot and than decreased 0.6, 1.2, 2.4, and 4.8kg levels in that order. 4. The content of phosphorus and magnesium was highest at 0.6kg irrigation water per pot. However, it tended to reduce at 4.8kg irrigation water per pot.

북한농업의 변화추이와 대북교역의 지속적 필요성

강지용 濟州大學校亞熱帶農業硏究所 2004 아열대농업생명과학연구지 Vol.20 No.1

In the field of agriculture in South Korea, the necessity of continued assistances or cooperations between South and North Korea's agriculture in the viewpoint of mutual supplements are as follows. The agricultural cooperations are desperately needed when we look a t from the side of recovery of economic supplements between South and North Korea. If there is a n effort to restore economic supplements in the field of agriculture, it becomes more obvious that agricultural cooperations between South and North Korea are necessary. Geographically and climatically. rice crops are profitable in South Korea and field crops, especially crops in a cold-district in highlands. forest products, and fruits are advantageous in North Korea. Concerning the livestock industry. the poultry farming and the hog raising industries are advantageous in South Korea because money for heat can be saved On the other hand, the pasturage whch develops and utilizes grassland from wide-stretched slope is profitable in North Korea. In conclusion. supplementary relations of agricultural production should be acheved through cooperations considering differences in natural environment between South and North Korea.

적과시기 및 방법이 온주밀감의 수량 및 과실품질에 미치는 영향

韓海龍,姜宗勳,姜聖根 濟州大學校亞熱帶農業硏究所 1997 亞熱帶農業硏究 Vol.14 No.-

This experiment aimed to establish adequate fruit thinning techniques by comparing and investigating fruit productivity and changes of fruit quality with thinning times and thinning methods. Satsuma mandarin(Citrus unshiua Marc.) cv. ‘Miyagawa Early was used and treatments were 11, the alternate whole branch fruit(buds) thinning(AWFBT), the partially whole tree fruit thinning(PWTFT) and the foliar spray of the chemical fruit thinning agent(FSCFTA:ethychlozate) etc. from the middle of June to early in Sept. The results were as follows ; Ⅰ. The earlier fruit-thinning times was, the higher the ratio of marketable fruit yield was, and the AWTFT and PWTFT in the middle of May, the FSCFTA and PWTFT in June were effective to increase the ratio of marketable yield in this order 2. Thinning of bud in the middle of May required about 50min. to eliminate buds from a tree, it's a big problem. In contrast, FSCFTA(ethycholzate 50mg/l + ethrel 20mg/l) required 3.1min, the shortest working hours for getting rid of buds and the AWFBT was more effective than the PWTFT because of saving the labor efforts to pick and thin fruit. 3. Thinning and FSCFTA methods could be able to harvest fruit earlier and also was good in rind color, but soluble solid and juice sac thickness which indicate the interior quality were not significant. It was thought that this is because leaf-fruit ratio at the harvesting time due to fruit thinning and FSCFTA treatments was less than 25. But in case of sugar-acid ratio, that of the AWFBT treatments showed a little more increse than that of the PWTFT. 4. The number of fruit set in following year was much more in earlier fruit thinning treatments and the AWFBT than in late thinning and PWTFT treatments, respectively. 5. From these results, it was considered that the tree bearing too many flowers in more effective to put the AWFBT at least by the end of June for increse of the ratio of marketable fruit yield, quality fruit and the prevention of the alternate bearing.

단지무우 改良을 爲한 實用形質의 選拔指標에 關한 硏究

金翰琳,吳翰俊 濟州大學校亞熱帶農業硏究所 1991 亞熱帶農業硏究 Vol.8 No.-

단지무우(Raphanus sativus L. var. hortensis Baker f. gigantissimus Makino)의 選拔을 效率的으로 遂行하기 위하여, 母系選拔法으로 2回 選拔한 단지무우 23系統으로 試驗을 實施하고, 이들에 대한 實用形質을 調査하여 遺傳率. 遺傳相關, 表現型相關, 環境相關 및 經路係數를 究明한 結果는 다음과 같다. 1. 系統間에 있어서 葉數· 葉柄의 길이· 根長· 根徑· 根形指數· 抽根長 및 根重은 高度의 有意性이 있고, 葉長· 乾葉重· 葉缺刻數 및 岐根數는 有意性이 없었다. 2. 遺傳率은 乾葉重· 根重· 葉數가 크고, 根形指數· 根長· 葉柄의 길이·抽根長· 根徑이 中間程度이며, 葉長· 岐根數· 葉缺刻數는 작았다. 3. 形質相互間의 遺傳相關·表現型相關과 環境相關의 크기에는 一定한 傾向이 없었고, 一般的으로 遺傳相關은 表現型相關보다 높았다. 遺傳相關에 있어서 根重은 葉數· 根徑 및 岐根數와 正의 相關關係가 높아서 이들 形質이 增加할수록 根重도 增大되었다. 表現型相關에 있어서 根重은 乾葉重 및 根徑과 높은 正의 相關關係가 높아서 이들 形質이 增加할수록 根重도 增大되었다. 表現型相關에 있어서 根重은 乾葉重 및 根徑과 높은 正의 相關關係가 있고, 環境相關에 있어서는 根重과 乾葉重 및 抽根長과 正의 相關關係가 높았다. 4. 根長 및 岐根數가 根重에 直接미치는 效果가 크며, 根重과 相關度가 높은 根徑에서는 岐根數에 의한 間接效果가, 그리고, 抽根長에서는 根長에 의한 間接效果가 컸었다. 以上의 結果에서 根徑, 岐根數 및 葉數가 根重에 크게 영향을 주어, 단지무우의 收量을 위한選拔에 이들이 指標形質로 思料되며, 根重의 遺傳率도 크므로 收量에 대한 選拔의 效果가 기대된다. This study was conducted to estimate genotypic, phenotypic and environmental correlations, heritabilities and path coefficients of agronomic characters using 23 lines of Danji radish (Raphanus sativus L. var. hortensis Baker f. gigantissiumus Makino) which were selected two times by maternal selection. The results obtained ware summarized as follow ; 1. The number of leaves per plant, the petiole length, the root length, the diameter of root, the root shape index, the root part above ground and the root weight had significant differences among the lines, but the leaf length, the weight of dry leaves, the number of parted leaflets and the number of branched root had not. 2. The heritability estimates for the weight of dry leaves, the root weight and the number of leaves per plant were high, those of the root shape index, the root length, the petiole length, the root part above ground and the diameter of root were medium, and those of the leaf length, the number of branched root and the number of parted leaflets were small. 3. The genotypic, the phenotypic and the environmental correlation coefficients between the characters had no definite tendency, that is, the high estimates in the genotypic correlations were not always high in the phenotypic or in the environmental. The genotypic correlations were generally higher than the phenotypic. In the genotypic correlation, the root weight had highly positive correlations with the number of leaves per plant, the diameter of root and the number of branched root, i.e. the root weight increased with increasing these characters. In the phenotypic correlation, the root weight highly related with the weight of dry leaves and the diameter of root. The environmental correlations between the root weight and the weight of dry leaves or the root part above ground were highly positive. 4. The directs effect of the root length and the number of branched root on the root weight were high. The indirect effects of the root part above ground via the root length, that of the number of branched root via the diameter of root which had high correlations with the root weight were high. As the result above-mentioned, it was discovered that the diameter of root, the number of branched root and the number of leaves per plant had large influences upon the root weight, and it was thought that the selection of Danji radish for the yield would be effective as the heritability estimates of the root weight was high.

쌀보리에 있어서 實用形質의 遺傳率, 相互相關, 經路係數 및 品種間 差異에 關한 硏究

金翰琳,任性彦 濟州大學校亞熱帶農業硏究所 1991 亞熱帶農業硏究 Vol.8 No.-

쌀보리 育種에 있어서 主要形質의 遺傳率 相互相關 및 經路係數를 究明하기 위하여 白胴外 15品種을 11月 10日과 11月 25日 2回 播種하고 이들에 對한 實用形質을 調査하여 播種期 移動에 따른 品種間 形質의 變化 遺傳率, 遺傳相關, 表現型相關, 環境相關 및 經路係數를 調査한 結果는 다음과 같다. 1. 出穗 및 成熟日數는 早播에서는 길고 晩播는 짧아졌으며 濟州道에서는 11月 10日에 播種하는 것이 種實收量도 많고 收量構成要素의 形質發現이 良好하였다. 2. 稈長,과 穗長은 早播보다 晩播에서 짧아지는 傾向이며, 品種間에는 差異가 컸다. 3. 種實收量, ㎡當穗數, 一穗粒數는 早播보다 晩播에서 急激히 減少되었고, 千粒重은 播種期間 差異가 적었다. 4. 播種期別 形質의 平均 遺傳率은 出芽日數, 出穗日數, 成熟日數, ㎡當穗數가 가장 높고, 稈長, 千粒重, 種實收量이 中間程度였으며,穗長이 가장 낮았다. 播種期 移動에 따른 遺傳率 變化는 出穗日數, 成熟日數, ㎡當穗數,種實收量이 變動이 적었고, 屑粒種의 變異가 크게 나타났다. 5. 形質間 相關은 播種期에 따라 다르며, 一定한 傾向이 없었다. 種實收量과 ㎡當穗數, 一穗粒數, 千粒重間에 遺傳相關係數는 播種期에 전혀 關係없이 높아 多數性 品種選別의 指標가 되는 것으로 認定되었다. 6. 種實收量에 對한 主要形質의 經路係數는 두 播種期와 名 形質을 全體的으로 볼 때 千粒重, ㎡當穗數, 一穗粒數의 直接 및 間接效果가 높아, 이들 形質이 種實收量에 對한 寄與度가 컸었다. This study was carried out to investigate heritabilities, genotypic, phenotypic and environmental correlations, and path coefficients among the agronomic characters of naked barley (Hordeum vulgare L. emend Lamark) on two seeding dates. Sixteen different cultivars, including Baekdong, were seeded on November 10th and 25th, 1983. The results obtained are summarized as follows ; 1. The days of heading and maturity were prolonged in early seeding, and were shotened in late seeding. Seeding on November 10th resulted in good yield components, and heavy production of grains. 2. The culm and the head were shorter in late seeding than in early seeding. There were significant differences among the cultivars in these characters. 3. The late seeding decreased the grain yield, the number of heads per ㎡ and grains per head, but did not decreased the weight of 1,000 grains. 4. On both seeding dates, the heritabilities of the number of heads per ㎡, the emergence and the maturing days were high, those of the culm length, the weight of 1,000 grains and the grain yield were medium, and that of head length were low. changes in the heritabilities of the heading and ma turing days, the number of heads and the grain yield were not considerable, but that of the weight of aborted grains was considerable when seeding dates were altered. 5. There was no definite tendency of correlations among characters according to seeding dates. The grain yield had high genotypic correlations with the number of heads and grains per head on both seeding dates. It was realized that these characters were useful selection criteria for grain yield. 6. Direct and indirect effects of 1,000 grain weight, the number of heads and grains per head versus the grain yield were high on both seeding dates, that is, these characters had a large influence on the grain yield.

여름메밀의 播種期 移動에 따른 生育 및 收量 形質의 變化

金翰琳,梁碩哲 濟州大學校亞熱帶農業硏究所 1996 亞熱帶農業硏究 Vol.13 No.-

SummaryThis study was conducted to clarify the effect of seeding dates on the growth and yield in summer-backwheat at Cheju. Yangjol-buckwheat was seeded at an interval of 5 days from March 26 to April 15.The obtained results are summarized as follows;1. Days to emergence, flowering and maturity were prolonged in early seeding and shortended in late seeding.2. Plant height, the number of branches and weight of 1,000 achenes had no differences between the seeding dates.3. The number of clusters, achenes per plant and achene yield were greater in plots seeded on Apr. 10 than others.4. There was a positive relationship among days to emergence, flowering and maturity. Achene yield was positive related with the number of clusters, achenes and branches per plant.5. As the results, recommendable seeding date for summer-buckwheat was about April 6 at Cheju.