濟州道 造景의 方向設定을 爲한 基礎調査硏究

李宗錫,白子勳 濟州大學校 1982 논문집 Vol.14 No.-

合理的인 濟州道 造景計劃의 方向을 設定하기 爲하여 設問書를 通한 全道民의 造景植物에 對한 選好度, 都市公園의 利用實態, 濟州道의 自然景觀, 住宅庭園의 實態 等과 動景觀을 調査分析한 結果는 다음과 같다. 1. 濟州道民들이 一般的으로 좋아하는 造景植物은 단풍난무, 동백, 장미, 향나무, 매화, 철쭉, 주목, 소철, 코스모스, 국화, 百合 等이었고, 싫어하는 種類로는 멀구슬나무, 팽나무, 배롱나무, 버드나무 等이었으며 草本植物보다는 樹木類를 落葉樹보다는 常綠樹를 좋아하는 것으로 나타났다. 한편 꽃의 色彩는 빨강색과 흰색을 좋아하였다. 2. 公園의 利用率은 調査對象者中 約 40% 程度로 낮았으며 利用者들은 散步를 하기 爲한 目的으로 관덕정부근과 사라봉公園의 利用率이 比較的 높았다. 또한 公園 施設物中 利用頻度 높은 것은 벤치와 散策路이었고 施設物의 設置 要求度가 높은 順序는 화장실, 運動기구, 잔디밭造成, 벤치, 散策路, 公衆電話, 등책(pargola), 안내판 等이었다. 3. 濟州道에서는 가을철이 四季節中 가장 아름다운 것으로 나타났고 아름다운 自然景觀地의 順序는 城山日出峰, 산방산, 第1橫斷道路, 정방폭포, 영실, 외돌괴, 第2橫斷道路, 용두암, 천제연, 천지연 等이었다. 4. 住宅의 作庭率은 약 71%이었고 庭園의 位置는 建物의 前面이 많았으며 面積은 17m²이하가 約 60%程度로 가장 많았다. 5. 動景觀의 主要對象으로서 파노라믹한 地形景觀과 海岸景觀, 草園景觀에 關하여 論議하였고 장차 濟州道의 道路造景은 動景觀을 考廬하여 展望이 良好한 區間은 open시켜야 할 것으로 사려되었다. For proposing the reasonable landscape planning principles, this study was made in 1981 through an information of the inquiry about present landscape status, for example, dweller's preference of landscape plants, utilization of public city parks, status of home gardens, natural landscape and moving landscape in Jeju island. From this inquiry we caught interesting facts such as follows; Acer palmatum, Camellic japonica, Rosa hybrida, Juniperus chinensis, Prunus mume, Rhododendron spp, Taxus cuspidata, Cycas revoluta, Cosmos bipinnatus, Chrysanthemum morifolium, lily spp. etc. were more loving landscape plants; however, Melia ajedrach, Celtis japonica, Lagerstroemica, indica and Salix babylonica were the sweller's disliking trees in general. Residents in the island were prefer woody plants to herbaceous, and they were more fond of evergreens than decidous. And in flower color, red and white were more loved by them than any other tints. Public parks were used by about 40% of respondents of the inquiry, and Sarabong park and Kwandeokjeong green were utilized more frequently for the purpose of strolling. In park facilities installed, bench and walk way were used more frequently, and the order of garden furnitures hoping to setting were public conveniences, sports equipments, lawn, bench, walk way, public telephone, pargola, guidance board. Houses having a Lome garden were about 71%, and large number of the gardens were positioned in the front of residence building. In area, 60% of the gardens was smaller than 17m². A chain of extinct volcanic hills, natural seaside landscape, grassland and pasture were discussed as a panoramic moving landscape from a view point of sightseeing in Jeju island. For promoting a fine view, good prospection course of circulation route of Jeju island should be open in the sense of vision.

동계의 토양온도가 감귤의 낙엽 및 품질에 미치는 영향

백자훈 제주대학교 1984 논문집 Vol.17 No.-

The resulte are summarized as follows; 1. Effect of polyethylene film mulching on the leaf fall ratio during the wintering. 1) There was not difference of between the treatment from November to early of December. 2) Transparent polyethylene film mulching plot maintained over the 12℃ rooting zone temperature in January and Feburary, which showed maintain temperature at the depth of 20cm underground. 3) Clean-tilled culture plot showed 9.1℃, sod culture plot 9.3℃ and grass mulching plot 9.5℃ in the 20cm part of underground and then there can't maintain the rooting zone temperature. Specially, the general notion which the grass mulching has the effect of keeping warm is not ture. 4) From the flank of soil temperpture maintenance and rise, these materials appeared the rising effects of the 2.54℃ from the November to the next March. 5) Compared with clean tilled culture plot, Black P.V.C plot showed decrease of 36.04% leaf fall ratio result from maintenance of soil temperature. 6) Except the polyethylene f i i mulching plot and Black polyethylene film mulching plot, the other treatments showed over the leaf fall ratio of 36% and it did not recogning the significance between the treatments. 7) Colorless P.V.C Plot and Black P.V.C plot rised the effect of decrease leaf fall ratio howeve the was not significance between two treatments. 2. Effect of polyethylene film mulching on the fruit quality. 1) 20cm part of undergroung showed the effect of 1-2℃ soil temperature rising, However the rising of 1-2℃ soil temperature did influence fruit quality at the time which was maintained over the rooting zone temperature. 2) The high soil temperature condition of maturing time increase the acid and the sugar. 3) The reason why the soil temperature rise only 1-2℃ was considered by canopy and the height transmission ratio is poor by the adjacent trees.

약재 처리에 의한 감귤의 조기낙과 방지 및 적과의 효과

백자훈 제주대학교 1970 논문집 Vol.2 No.-

These studies were undertaken to find out rffects of certaim chemicals 2.4-D, 2.4. 5-T. MH-30, Gibberellin, Calcuium primary phosphate and potassium primary phosphate-for the purpose of preventing the fruit drop and the fruit thinning in citrus trees. The results are summarized as follows : Effects on controlling the fruit drop. 1) Treatments with the chemicals of trees at the full bloom May 23, and at the petal fall, June 11, were effective on controlling the fruit drop. The application on the 23rd of May was better than that on the 11th of June. 2) Potassium primary phosphate, cacium primary phophate and Gibberellin had a tendency to control the fruit drop of citrus trees fruits in that order. 3) In the case treated on the 20th of June, one month after the full bloom, 2. 4-D was most excellent but petassium primary phosphate was less effective than calcium primary phosphate on preventing the fruit drop. Effects on fruit thinning. 1) Application at the full bloom resueted in considorable fruit drops. 2) Treatments with MH-30 and 2. 4-D were effective in the fruit thinning. However application of MH-30 at the full bloom had a tendency to retard new citrus shoot growth.

濟州地方 氣溫의 統計的 分析에 依한 柑橘 開花期 推定에 關한 調査 硏究

白子勳 제주대학교 1980 논문집 Vol.12 No.-

This study was carried out to give practical help for farm management by deriving a regression equation which could predict the blooning date of cteus. The investigation measured the correlation between air temperature among various meteorological factors and blooming of the citrus. A Regression equation was calculated by analyzing statistically 11 years of air temperature dawn collected from 1970 to 1980. The data was provided the Jeju National Weather. The study periods were from March 11th to April 10th, from March 21st to april 20th, and from April 1st to April 30th, and the following equation was obtained by dividing every 30 days as one unit.

황금하귤의 대량번식을 위한 경정배양에 관한 연구

백자훈,전승종 제주대학교 1985 논문집 Vol.20 No.-

In order to establish the shoot tip culture method for the mass propagation of 'Hwang Kum Ha Kyul'(Citrus natsudaidai) the effects of sterilizing methods and various combination of growth regulators were tested on the shooting and rooting of the explant in M S medium The results obtained are summarized as fallows. 1. The least contamination and browning die-back occured in the shoot tips with 10% Yuhanrox added 1% Tween- 20 as surfectant 2. The best shoot multiplication was achieved in MS medium added BA 10mg/l alone and 5 shoots were normally obtained from one explant 3. Most shoot tips survived when collected on Aug 20 4. The effects of NAA on shooting. and of NAA. IBA. GA_(3) and minimal medium on rooting were not recognized 5. MS medium added with the activated carbon (2g/ℓ), was concluded to be the best rooting medium.

早生溫州(Citrus unshiu MARC)의 果皮內 및 붕소성분이 일소발생에 미치는 영향

白子勳 제주대학교 1988 논문집 Vol.26 No.-

1 溫州蜜柑에서 加里 및 硼素의 葉面撤布 濃度를 一定하게 하고 撤布時期 및 撤布回數를 달리 하였을 때 果實의 果皮內 加里 및 硼素成分의 合量이 日燒發生에 미치는 影響을 調査한 結果 要約하면 다음과 같다. 1. 加里 8月 25日 1回 處理區와 加里+硼素 8月 5日 1回 處理區를 除外한 全處理에서 日燒發生率이 標準區에 比하여 적었다. 2. 硼素處理區 加理處理區 加里+硼素處理區 順으로 全體 日燒發生率이 적었다. 3. 硼素 8月 5日 1面 處理區 7月 5日, 8月 25日 2回 處理區 加里+ 硼素 8月 25日 1回 處理區에서 日燒發生이 전혀 안되었다. 4. 處理時期間에는 日燒發生에 큰 影響이 있었다. 5. 處理區에서는 果實이 液胞發達期에서 着色初期에 日燒發生이 되어 早期發生이 되었다. 標準區에서 着色期에 日燒發生이 되었다. 6. 樹冠部位別 日燒發生率은 標準區에서는 樹冠의 上位部 外側部位 方位別로는 南, 南西側에 日燒發生 이 集中化된 反面에 處理區에서는 上,中, 下部 內, 外側部位 方位別로 고르게 發生되어 集中化 現象이 적었다. 7. 硼素處理區에서 日燒發生의 集中化現象이 더욱 緩和 되었다. 8. 一果에 대한 日燒發生은 標準區에서는 南, 東南側에 果實의 果頂部位에 集中發生되었으며 處理區에서는 分散發生되었다. 9. 各 處理別로 果皮內 加里 및 硼素成分의 含量은 標準區보다 많았다. 10. 加里 및 硼素成分의 果皮內 含量이 9月 20日 以後 急激히 減少하면서 日燒發生果가 생겼다. 11. 加里處理區에서 健全果보다 日燒發生果의 果皮內 加里成分含量이 적었다. 12. 硼素處理區에서 健全果보다 日燒發生果의 果皮內 硼素成分含量이 많았다. 13. 硼素處理區에서 健全果와 日燒發生果의 果皮內 加里成分含量이 加里處理區의 果皮內 加里成分含量과 거의 같은 水準에 있어 硼素成分이 加里成分의 吸收 및 轉流에 影向을 주었다. 14. 加里 및 硼燒의 撤布時期에 관계없이 果實의 細胞質 增加期와 ??發達期, 成熱期 等의 生理的 變化期에 알맞는 加里 및 硼素成分의 適正比率이 日燒防止에 效果的이었다. In Satsuma mandarin, when potassium (K) and boron (B) were sprayed to the leaves with different spraying times and spraying numbers, the results from the effects of K and B contents in fruit skins on the occurring rate of sn-scald fruits were summarized as follows: 1. Compared to the control, all treatrments reduced the occurring rate of sun-scald fruits except treatments that K was sprayed on August 25, 1987 and the combination of K+B on August 5, 1987. 2. The boron treatment was most effective in reducing the occurrences of sun-scald fruits, follwed by treatments of K, K+ B and the control. 3. In the treatments that boron was sprayed once on August 5, twice on July 5and August 25 and B+ K once on August 25, 1987. none of the sun-scald fruits were occurred. 4. Spraying time(or month) was not signigicant in reducing the sun-scald fruits. 5. In treatments that K, B and their combination were sprayed, the early occurrence of the sun-scald fruits was observed between the developmental stage of vacuoles in fruit cells and the early period of coloration of the fruits. In the control, the sun-scald fruits occurred in the normal period of coloration. 6. The occurring rate of the sun-scald fruits was dependent upon positions bearing fruits on the canopy of tree. 7. In boron treatment, centralizing the occurrences of sun-scald fruits was reduced. 8. The occurrence of the sun-scald within one fruit was of wide spreas in all treatments, while the sun-scald fruits were mainly observed in the directions to south and southeast of the fruits in the control. 9. The contents of potassium and boron in the frout skins were higher in all teatmnets sprayed than in the control. 10. The contents of potassium and boron in the fruit skins were sharply reduced in all treatments after september 20, 1987. 11. In the potassium treatment, the skins of the sun-scald fruits contained less potassium than the normal fruits. 12. In the boron treatment, the skins of sun-scald fruits contained more boron than those of the normal fruits did. 13. The potassium contents of the normal and the sun-scald fruits in the boron treatments werer similar to those in the potassium treatments. Ther fore, the physiological function of boron affected the transocation of potassium. 14. The optimal ratio of B and K suitable for the physiological changing periods such as increases in cell quality, development stage of vacuoles and maturation of fruits played an important role in improving the resistance to the occurrence of the sun-scald fruits.

Pineapple에 있어서 時期別 人爲開花誘導가 生育 및 收量에 미치는 影響

吳現道,金龍湖,白子勳 濟州大學校 亞熱帶農業硏究所 1986 亞熱帶農業硏究 Vol.3 No.-

Pineapple에 대하여 人爲開花誘導를 時期別로 處理하여 生育 및 收量에 미치는 영향을 究明하기 爲하여 本 試驗을 遂行하였다. 그 結果를 要約하면 다음과 같다. 草長은 人爲開花誘導 處理가 늦을수록 길어지는 傾向을 보였으며 抽苔始는 品種에 따라서 다른 樣相을 보였다. 開花始는 "Sarawak"에서 6月30日 處理區가 가장 짧은 期間에 나타났고 7月30日 處理區는 가장 길었으며 "Special amarello"에 있어서는 處理時期가 늦을수록 길어지는 傾向을 보였다. 成熟期는 두 品種 共히 處理時期가 늦을수록 늦었으며 果重은 5月30日, 6月30日 處理區가 7月30日 處理區에 比해서 越等하게 무거웠다. 두 品種 共히 處理時期는 草長, 開花始, 開花期와는 正의 相關을 보여 處理時期가 늦을수록 草長을 길었고 開花始, 開花期는 늦었다. 果重은 開花始 및 開花期와 "Sarawak"에서 正의 相關을 보였으나 "Special amarello"에 있어서는 負의 相關을 보였다. This study was carried out to determine the effects of artificial flowering induction in pineapple. The results obtained are summarized as follows. The plant height tended to increase with delaying artificial flowering induction from May 30 to July 30. In 'Sarawack' the number of days from the inflorescence head emergence to the first flower opening was shortest in June 30-treated plants and longest in July 30-treated plants. In 'Special amarello', however, days to the first flower opening increased with delaying treatment. Maturity of two cultivars was postponed as treatment was delayed from May 30 to July 30. Fruit weight of two cultivars was markedly heavier at the plots treated on May 30 to and June than at the plot treated on July 30. Treatment dates were positively correlated with plant height and days to the first and central flower opening in two cultivars indicating that the earlier the treatment, the longer the plant height and days to the first and central flower opening. Fruit weight was positively correlated with days to first and central flower opening in Sarawack bu negatively in Speciall amarello.

熱帶作物이 溫帶地方에서 日長反應에 關한 硏究 - Pineapple이 日長條件에 따른 生育反應

白子勳,金承權 제주대학교 아열대농업생명과학연구소 1985 아열대농업생명과학연구지 Vol.2 No.-

熱帶作物이 溫帶地方에서 日長反應에 關한 硏究 : Pineapple이 日長條件에 따른 生育反應

金承權,白子勳 濟州大學校 亞熱帶農業硏究所 1985 亞熱帶農業硏究 Vol.2 No.-

熱帶果樹類인 파인애플을 溫帶地方인 濟州道에서 栽培할 境遇, 生育에 滴合한 溫度의 維持는 可能하지만 日長의 調節이 어려운 實情이다. 파인애플의 生育과 開花時期인 여름철은 日照時間이 15∼16時間程度되는 長日條件이기 때문에 開花結實에 不利하다. 따라서 本 硏究는 日長條件에 따른 파인애플의 生育 및 開花反應을 알아보기 爲하여 實驗을 實施하였다. 長日條件下에서는 葉長, 葉幅, 新葉發生數가 增加하였고 短日條件에서는 감소되었다. 新葉의 發生은 中日處理區에서도 短日處理區에 比하여 그 數가 增加되었다. 乾物量은 對照區에서 가장 무거웠고 比率은 生體重의 14%程度 되었다. 結果的으로 濟州道에 있어서 파인애플의 發育은 長日條件에서 良好하였음을 알 수 있었다. Because the pineapple as tropical plant, optimum growth temperature is controlled without trouble, but control of daylength is difficult to culture of the plant as a crop in Cheju island, korea where is temperate zone. So, the daylength is from 15 to 16 hours in summer season of the island, this daylength condition did not good for flowering of the pineapple plant. This study was carried out to investigate growth status according to the controlled daylength. Leaves length, leaves width and number of new leaves were increased under the long-day condition; however, there were decreased under the short-day length. And number of new leaves were increased under the neutral condition as compared with short-day condition. The best dry weight obtained was observed in control, and the ratio was about 14%. In veiw of the results so far achieved, culture of pineapple plant in Cheju island, korea was favourable in controlled long-day condition.

禾北里名稱의 變遷과 禾北校의 設立

白子勳 제주대학교 탐라문화연구소 1990 탐라문화 Vol.0 No.10