溫度變化가 쌀보리와 麥酒보리의 初期生育 및 葉特性에 미치는 影響

姜榮吉,高官秀,吳現道 제주대학교 아열대농업생명과학연구소 1995 아열대농업생명과학연구지 Vol.12 No.-

질소시비량과 시비방법에 따른 온주밀감의 질소회수율

강영길,유장걸 제주대학교 방사능이용연구소 2000 연구보고 Vol.14 No.-

In order to evaluate the effects of nitrogen (N) rate and application method on the recovery of N fertilizer applied in spring and summer by Satsuma mandarins (cv. Myakawa Wase), N as urea was surface-applied at the rates of 50 (applied with 20 mm water; 50% N application) and 100% (three treatments; applied as solid, with 5 or 20 mm water) of the recommended rate (150 kg ha-1 yr-1) on 25 March and 12 June with a application ratio of in and 20%. The labeled N was applied only once in spring or summer. There were no differences among the four treatments in fruit yield, fruit quality except acid content of juice, and N content of leaves. The recovery of fertilizer N applied in spring by a tree ranged from 7.8 to 8.3% and that of N applied in summer ranged from 11.3 to 14.2% at the three recommended N rates and was 18.0% for the 50% N application. The recovery of fertilizer N applied in spring in the upper 40cm of soil ranged from 32.1 to 37.7% at the three recommended N rates and was 55.8% at the 50% N application while that of N applied in summer was 69.8% for surface application of the recommended N rate and ranged from 80.7 to 84.4% for the three N applications with water. The total (tree + soil) recovery of N fertilizer applied in spring was highest (64.1%) for the 50% N application and ranged from 40.3 to 45.5% for the three recommended N rates. The total recovery of N fertilizer applied in summer was also highest (99.4%) for the 50% N application and tended to be higher for the application of N with water than surface application and to be increased with increasing irrigation amount at N application.

삽목시기, 삽수 채취 부위 및 마디수가 겨울딸기 지삽의 발근에 미치는 영향

강영길,고미라,강시용,류기중 韓國藥用作物學會 2005 한국약용작물학회지 Vol.13 No.3

2002년 6월 26일, 8월 3일 및 9월 4일에 당년 발생한 덩굴에서 정부 중부 기부의 2마디씩 채취하여 삽목하였고, 2002년 7월 10일에 삽수의 마디수를 1~4개로 달리하여 삽목하여 겨울딸기의 발근 및 신초생육을 조사한 결과는 다음과 같다. 발근율은 8월 2일 삽목구에서 69.6%로 가장 높았고 근장은 6월 26일 삽목구에서 23.1 cm로 가장 길었다. 9월 4일 삽목구의 발근율 및 신초 생육이 현저히 떨어졌다. 삽수 채취 부위별 발근율은 덩굴 중간부위에서 55.4%로 가장 높았으며 그 다음이 정단부위에서 45.6%이었고 기부에서 25.4%로 가장 낮았다. 다른 형질들은 삽수 채취부위에 따른 차이가 없었다. 발근율과 신초발생률은 삽수마디수에 따른 차이가 없었으나 삽수당 근수 및 뿌리 건물중, 신초 생육은 삽수마디수가 많을수록 증가되었다. This study was conducted to determine effects of cutting date, cutting position, and node number on rooting of Rubus buergeri Miquel. Apical, medial, and basal parts of the vines emerged in 2002 were cut on June 26, August 2, and September 4, in 2002. Vine pieces with one to four nodes taken from the medial parts of the vines were also cut on July 10. The greatest rooting (69.6%) occurred in cuttings taken on August 2. Cutting taken on June 26 had the longest roots (23.1 cm). Rooting and new shoot growth markedly decreased at September 4 cutting. The greatest rooting (55.4%) occurred in cuttings taken from medial part of the vines and followed by apical parts (45.6%), and basal parts (25.4%). The other traits were not significantly affected by cutting position. Rooting percentage and percent new shoot growth were not significantly affected by node number, but root number and root dry weight per cutting, and new shoot growth increased with node number.

앞작물 재배와 질소 시비량의 차이에 따른 이탈리언라이그라스의 청예 수량

강영길,조남기,고영우,강민수,김용찬 제주대학교 아열대농업생명과학연구소 1998 아열대농업생명과학연구지 Vol.15 No.-

Effects of Forage Utilization on Grain Yield of Naked and Maliting Barley in Cheju Province

姜榮吉 제주대학교 1990 논문집 Vol.31 No.-

濟州地方에 있어서 種實用보다 早播한 쌀보리와 麥酒보리와 生育初期 靑草利用이 生育 및 收量에 미치는 影響을 구명하고자 濟州, 涯月, 西歸에서 새살보리와 斗山 22號(麥酒보리)를 공시하여 시험한 결과를 要約하면 다음과 같다. 1. 3回 刈取한 쌀보리의 靑草收量은 濟州, 涯月, 西歸에서 각각 1247,820,1327kg/10a 였고 2回 刈取한 麥酒보리의 靑草收量은 각각 1189,515,930 ㎏/10a 였다. 2. 쌀보리의 3 地域 平均 出穗期는 種實單用區에서 보다 靑草利用區에서 2日 빨랐으나 맥주보리에서는 靑草利用에 따른 出穗期는 지역에 따라 차이가 있었다. 3. 稈長은 西歸의 麥酒보리를 제외하고는 靑草利用에 의하여 減少되었다. 4. ㎡당 穗數는 品種과 地域에 관계없이 種實單用과 靑草利用區間 차이가 없었다. 穗當粒數, 1000粒重, L重은 品種과 地域에 따라 靑草利用에 따는 일정한 경향이 없었다. 5. 3 地域 平均 쌀보리의 種實收量은 種實單用과 靑草利用區間 차이가 없었으나 麥酒보리의 種實收量은 濟州 및 涯月의 경우 靑草利用에 의하여 減少되었다. 10a當 藁重은 品種에 관계없이 靑草利用에 의하여 減少되었다. This study was conducted to determine the effects of forage utilization on the growth and yield of naked and malting barley in Cheju province. 'Saessalbori' (naked barley) and 'Doosan 22' (malting barley) were grown at three locations in grain-only and forage utilization systems. Barley for the grain-only system was seeded in early to mid-November and that for the forage utilization system, in mid-October. Total fresh forage yields of naked barley harvested thrice at Cheju, Aeweol and Seogwi were 1247, 820 and 1327 kg/10a, respecively, and those of malting barley harvested twice were 1189, 515 and 930 kg/10a, respectively. Naked barley headed two days earlier in the forage utilization system, than in the grain-only ststem. averaging three locations, Forage utilization did not consistently affect heading data of malting barley grown at three locations. Forage utilization significantly reduced culm length, regardless of cultivars and locations, except that on malting barley at Seogwi. The number of spiked per ㎡ of two cultivars did not significantly differ in the two production systems. irrespective of location, The number of kernels per spike, 1000-kernel weight and test weight of two cultivars were not consistently influenced by the production system. The three-location average grain yields of naked barley did not significantly differ in two production systems. However, forage utilization significantly decreased grain yield of malting barley at Cheju and Aeweol. Straw yield of two cultivars was decreased by forage utilization.

濟州道의 主要 食糧 및 特用作物의 栽培面積과 收量 變遷

姜榮吉 濟州大學校 새마을硏究所 1987 새마을硏究論文集 Vol.4 No.-

Effects of Planting Date and Tiller Removal on Growth and Yield of Sweet Corn Hybrids

姜榮吉,朴根龍,朴勝義,文賢貴 제주대학교 아열대농업생명과학연구소 1989 아열대농업생명과학연구지 Vol.6 No.-

濟州道內 農作物을 加害하는 총채벌레 種에 관한 調査

姜尙勳,高永友,吳始憲,權五均,姜榮吉 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에서 栽培하고 있는 農作物에 어떠한 총채벌레 種이 加害하는 가를 알기 위하여 1996년 1월부터 9월까지 調査한 결과는 아래와 같다. 1. 메밀·콩 등 田作物 11種 작물에서는 대만총채벌레 등 13종이 채집되었고, 대만총채벌레·꽃노랑총채벌레·오이총채벌레·콩어리총채벌레·파총채벌레 순으로 발생량이 많았으나, 그외의 종은 극히 소수만이 발생하였다. 2. 배추·무 등 菜蔬類 19種 작물에서는 꽃노랑총채벌레 등 10종이 채집되었고, 꽃노랑총채벌레·대만총채벌레·파총채벌레·오이총채벌레 순으로 발생량이 많았다. 3. 카네이션, 국화 등 花卉類 5重 작물에서는 꽃노랑총채벌레 등 7종이 채집되었고, 꽃노랑총채벌레·대만총채벌레·오이총채벌레 순으로 발생량이 많았다. 4. 감귤·금감·포도 등 果樹作物에서는 꽃노랑총채벌레 등 8종이 채집되었고, 꽃노랑총채벌레·하와이총채벌레·대만총채벌레·볼록총채벌레 순으로 발생량이 많았다. 5. 결명자·시호 등 4種의 藥用作物에서는 파총채벌레 등 8종이 채집되었고, 파총채벌레·콩어리총채벌레 대만총채벌레·중국관총채벌레 순으로 발생량이 많았다. 6. 꽃노랑총채벌레와 대만총채별레는 기주범위가 넓고, 대부분의 작물에 발생량이 많았다. This study was carried out to know species of thrips damaging crops grown in Cheju Island from January to September in 1996. The results were summarized as follows. 1. Thirteen species including Frankliniella intonsa were collected from 11 upland crops such as buckwheat, soybean, etc. The number of thrips collected in the upland crops declined in the order Frankliniella occidentalis, Thrips palmi, Mycterothrips glycines and T. tabaci. The small number of other species was collected. 2. Ten species including Frankliniella occidentalis were collected from 19 vegetable crops such as chinese cabbage, radish, etc The number of thrips collected in the vegetable crops was great in the order Frankliniella occidentalis, F. intonsa, Thrips tabaci and T. palmi. 3. Seven species including Frankliniella occidentalis were collected from 7 floricultural crops such as carnation, chrysanthemum, etc. The number of collected thrips in the floricultural crops was great in the order Frankliniella occidentalis, F. intonsa and Thrips tabaci. 4. Eight species including Frankliniella occidentalis were collected from 3 fruit trees such as satsuma orange, grapevine, round kumquat. The number of collected thrips in the fruit trees reduced in the following orders : Frankliniella occidentalis>Thrips hawaiiensis>T. palmi.>Scirtothrips dorsalis. 5. Eight species including Thrips tabaci were collected from 4 medicinal crops such as cassia seed, balloonflower etc. The number of thrips collected in the medicinal crops was great in the order Thrips tabace, Mycterothrips glycines, Frankliniells intonsa and Haplothrips chinensis. 6. The hosts of Frankliniella occidentalis and F. intonsa were very wide, and the great number of two species of thrips were collected in most crops.

온주밀감의 수체부위에 따른 질소 함량 및 집적량

강영길,오현도,유장걸,오상호 제주대학교 아열대농업생명과학연구소 1998 아열대농업생명과학연구지 Vol.15 No.-

변형체간의 접촉을 고려한 3차원 초소성 성형/확산접합의 유한요소해석

강영길,송재선,홍성석,김용환,Kang, Yung-Kil,Song, Jae-Sun,Hong, Sung-Suk,Kim, Yong-Hwan 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.1

Superplastic forming/diffusion bonding(SPF/DB) processes with inner contact were analyzed using a 3-D rigid visco-plastic finite element method. A constant-triangular element based on membrane approximation and an incremental theory of plasticity are employed for the formulation. The hierarchical search algorithm for the contact searching has been applied. The algorithms for contact force processing were designed to handle equally well contact between deformable bodies, as well as rigid bodies. The plate of three and four sheets for 3-D SPF/DB model are analyzed using the developed program. The validity for the analysis is verified by comparison between analysis, experiment and results in the literature.