相對林地의 開發利用에 關한 硏究

張東燮,全太甲 전남대학교 한국농어촌개발연구소 1978 농산어촌개발연구 Vol.13 No.-

Chollanamndo is an agricultural region. About 22 percent of the national grain is produced in this region, 59 percent of the people. compared with a 36 percent national average, engages in agriculture and 47 percent of the gross provincial product. comparing 25 percent of the national average. comes farm agriculture. Nevertheless, the level of farm income per farm js lower than the national average. The expansion of arable land per farm is very important for the farms in this region. In this regard. the author is going to give special attention first. to find how much avaiIable hillside land the province has ; second. to estimate the expected effects .of expansion of land per farm and increase in food production. as well as farm income per farrn in case of the-available hillside lands which are utilized for agricultural use; third to search for the reasons why such a good available resource has not been utilized ; and fourth, to generalize the acceptable policy measures for hillside land utilization. The findings of the study wiIl be summarized as foIlows. 1. In Chollanamdo , there are about 200,500 jungbo of available hillside land, of which about 51,000 jungbo is considered to be available for agricultural uses without great rifficulties. 2. Supposing these lands are brought into agricultural use, the acreage per ’farm wiIl be expanded from the present level of 8.<< danbo to 9.63 - danbo, accounting for about a 14.1 percent increase in acreage. The barley production. the only. one crop .considered, will be increasedto 63,950 ~ annnually, valued at about 6.6 billion won of farm income for Chollanamdo and 17,000 won per farm. Ofcourse, if the crops care for are differed by slopes of lands the expectation of increase iñ income would be much greater. 3. The study shows the main reasons for lower utilization of available hilIside lands are not the physical disadvantages of 뼈 land itself, but because of institutional restrictions. lack of will and negligence in policies for land use. 4. As a consepuence. the author suggests that the government .as well as. the farmer should recognize the importance and the possibilities of better utilization of hillside land. and pay for efforts to achieve its maximum uses.

笠岩山의 高等菌類相

정남철,오광인,채정기,위계문 전남대학교 한국농어촌개발연구소 1993 농산어촌개발연구 Vol.28 No.-

The 9 orders, 29 families, 51 genera, and 77 species of higher fungi belong to the two subdivisions(Basidiomycotina, Ascomycotina) were collected from the Jangsung Forests of Chonnam National University Forests around Mt. Ipam. The 23 families and 66 species of basidiomycetes in which the 30 and 36 species of saprophytic and mycorrhizal mushrooms were included respectively, were isolated. The 16 species(53%) from the 30 species of saprophytic mushrooms were edible and the dominant family was Polyporaceae. The Tricholomataceae, Russulaceae, Boletaceae and Strobilomytaceae formed the 64% of the 36 species of mycorrhizal mushrooms. Of these, the Laccaria(Tricholomataceae) and Russula(Russulaceae) were common genera of which 22 species(61%) were edible and two species were very poisonous. Especially, Tylopilus neofellus(Boletaceae) that has a big fruiting body of which cap diameter is around 20-30cm, were grown up in this area. Ascomycetes were composed of 6 family 11 species in which 8 and 3 species of saprophytic and parasitic mushrooms were included, respectively. Of the 8 species of parasitic mushrooms, 4 were edible but the other 4 were weakly poisonous. The 3 species of parasitic mushrooms were belonged to the genus Cordyceps(Clavicipitaceae).

亞細亞棉 倍數體 特性과 陸地棉과의 交雜

김철우,김용재 전남대학교 한국농어촌개발연구소 1995 농산어촌개발연구 Vol.30 No.-

The objective of this study is to know the characteristics of colchicine induced variant in asiatic cotton (Gossypium arboreum L.) and to improve of the efficiency in asiatic cotton(Gossypium arboreum L.) × upland cotton(G. hirsutum L.) Treatments of diploid asiatic cotton(2n=26) seeds with colchicine solution were ranging from 0.05 to 0.6% for 4 to 32 hours. Colchicine solutions of 0.6% applied for 24 hours appear to be suitable for in- ducing colchiploid in asiatic cotton. Inducing colchiploid plants were showing several variants compared to diploid in internode length, Lobes, leaf factor, anther color and bracts. The pollen was steriled. Induced colchiploid and upland cotton hybrized with relative ease. The ratio of boll setting was 53.1%. The morphological characteristics of the hybrids were similar to upland cotton in vegetative parts but sexual parts were closed to asiatic cotton.

農村의 主要社會經濟團體調査에 依한 韓國農村의 停?性에 關한 硏究

崔在律 전남대학교 한국농어촌개발연구소 1964 농산어촌개발연구 Vol.2 No.-

유아등과 성페로몬트랩에 의한 차애모무늬잎말이나방(Adoxophyes sp.)의 발생예찰

이승찬,박관우,김상수 전남대학교 한국농어촌개발연구소 1995 농산어촌개발연구 Vol.30 No.-

Experiments was conducted to investigate the seasonal fluctuation in population densities of smaller tea tortrix, Adoxophyes sp., from 1992 to 1994 at a tea plantation in southern Korea. As the monitoring methods of smaller tea tortrix, the number of moths caught by incandescent light traps and fluorescent light traps showed similar trends, and sex pheromone traps showed much clear peaks of moth occurrence from the beginning to the end of the study periods. The population fluctuations of smaller tea tortrix showed clear 4 peaks which were in mid-May, mid-July, mid-August and late September. The number of moths caught by sex pheromone trap were 2-4 times as much as those by light trap. As a result, use of the sex pheromone trap could be recommended for monitoring the moth populations and predicting their damage in terms of integrated management of the smaller tea tortrix in tea plantations.

글라디올러스(Gladiolus gandavnsis)의 優良種球生産 技術開發에 關한 硏究(Ⅰ)

朴華性,金光秀,鄭淳柱 전남대학교 한국농어촌개발연구소 1989 농산어촌개발연구 Vol.24 No.-

In order to produce better quality of gladiolus corm, one of the cultivar, Red Beauty was used to find out the effect of plant spacing, planting depth and the levels of nitrogen application on the leaf growth and growth of new corm. 1. Additional 2 cm deep planting required another 2 days to emerge and resulted in 5 cm shorter plant height. 2. Rate of emergence investigated at 25 days after planting showed 100% when planted 5 cm deep. 3. Rate of new leaf production was not affected by planting depth. 4. Leaf area growth, fresh and dry weight and growth of new corm was best when planted 7cm deep. 5. Plant height, leaf area and new corm development showed was best when planted in 20×25 cm dencity with 30 kg / 10a nitrogen.

壓密의 數値解析과 盛土工事의 破壊豫測

李汶樹,吳在和 전남대학교 한국농어촌개발연구소 1989 농산어촌개발연구 Vol.24 No.-

본 연구는 關口等(1980) 에 의하여 제안된 彈·粘塑性 構成方程式을 선정하여 盛土荷重을 받 고 있는 軟弱地盤의 샌드드레인에 대하여 有限法要素法에 의한 數値解析을 수행하는데 그 目的이 있다. 韓國西南海岸의 大部分은 軟弱地盤으로 이루어져 있기 때문에 建設工事를 하는데 壓密이 라는 심각한 문제가 야기된다. 이와 관련해서 본 연구에서는 事例檢討로서 西南海岸의 于拓과 工業團地造成事業과 관련된 設計와 施工管理 資料를 確保할 수 있는 方案도 강구된다. 또 이 연구에서 개발된 電算 프로그램의 粘度와 그 實用性을 확인하기 위하여 光陽製鐵所敷 也 造成工事 現場의 實觀測徝와 數値解析結果를 비교한 바 兩者가 잘 一致하고 있음이 발견된 다. 이 結果로부터 盛土工事의 最適化도 기대할 수 있게 되었으며 分析된 主要結論을 要約하면 다음과 같다. 1. 彈·粘塑性 構成모델은 이 연구에서 대상으로 한 粘性土地盤의 壓密解析에 適合하다고 立 證된다. 2. 數値解析에 의하여 地盤改良의 効果와 施工速度를 豫側할 수 있다.

榮山江·蟾津江流域 耕作土 및 河川土中 有機鹽素系 殺虫劑의 殘留分析

梁昌烋,徐鎔澤,沈在漢 전남대학교 한국농어촌개발연구소 1985 농산어촌개발연구 Vol.20 No.-

Soil samples collected from 210 sites(paddy 95, up-land 71. river-sediment 44 sites) were analysed by steam distillation for organochlorine pesticide residues in Youngsangang and Somjin-gang riverside. The results obtained were as follows; The mean of total residue levels of organochlorine pesticide was 0.050ppm and mean residue levels of DDT homologues(p, p'-DDE÷p, p' -DDD+p,p'-DDT), cyclodiene chemicals( α-thiodan+ß-thiodan+aldrin+dieldrin+heptachlor) and BHC isomer(α-BHC-τ-BHC)was 0.021ppm, 0.021ppm and 0.008ppm in Youngsan-gang riverside respectively. The mean of total residue levels of organochlorine pesticide was 0. 078ppm and mean residue levels of DDT homologues, cyclodiene chemicals and BHC isomer was 0.036ppm, 0.036ppm. and 0.006ppm in Somjin-gang riverside respectively. The mean of total residue levels of organochlorine pesticide in up-land soil(0.095ppm) was six times higher than that of river-sediment(0.015ppm). α-BHC was detected in almost all soil samples and its mean residues was ranged from 0.002 to 0.006ppm. High levels of thiodan isomer and DDT homologues were responsible for the observed high organochlorine pesticide residues in up-land soil. The mean of total residue levels of organochlorine pesticide increased in the order of dieldrin. τ-BHC. p,p'-DDE, aldrin, α-BHC. heptachlor. ß-thiodan p,p’ -DDD, and p,p’-DDT. :0.

肉用 種鷄의 八週龄時 可食屠體率과 蓄積脂肪 含率의 遺傳母數에 관한 硏究

이월한, 문승주, 김재홍 전남대학교 한국농어촌개발연구소 1993 농산어촌개발연구 Vol.28 No.-

This experiment was conducted to estimate the genetic parameters of evisceated carcass, abdominal fat pad, carcass fat and total body fat weight percentages at 8 week old W. P. Rock C Line, maintained by the Live-Stock Experiment Station, R. D. A Suweon. Records of 375 progeny produced by 13 sires and 46 dams were analyzed, and the results obtained were summarized as follows: 1. Respective values of examined traits were live weight 1473.7g. and 1850.3g, eviscerated carcass weight 60.2% and 61.6%, abdominal fat pad weight 3.1% and 2.7%, carcass fat weight 11. 7% and 11.3%, and total body fat weight 14.5% and 13.7% for female and male chicks, respectively. 2.There were no significant differences between darn and sire variance components for examined traits. Therefore, the heritability estimates based on the sire variance component for examined traits were similar to those based on the dam variance component. The heritabilily estimates based on both sire and dam components (h) for weights of body parts as ratios of live weight were eviscerated carcass 0.389 and 0.341, abdornina1 fat pad 0.253 and 0.261, carcass fat 0.172 and 0.217, and total body fat 0.190 and 0.210 for male and fermale, respectively. 3. Estimates of phenotypic correlations of live weight(g) and eviscerated carcass(%) with measures of abdominal fat pad(%), carcass fat(%) and total body fat(%) were comparatively low. However, relationships between live weight(g) and eviscerated carcass(%). abdominal fat pad(%) and carcass fat(%) or total body fat(%) were moderate in magnitude. Corresponding correlation between total body fat(%) and carcass fat(%) tend to be very high and positive. 4. Genetic correlations(rg ) between measures of examined traits were generally high. Respective values for abdominal fat pad(%). carcass fat(%) and total body fat (%) were -0.766 and -0.672, -0.606 and -0.703. and -0.571 and -0.712 with live weight(g) in male and female. respectively: they were -0.542 and -0.676. 649 and 0.324. and -0.447 and -0.378 with eviscerated carcass percentages. Estimates of genetic correlations of eviscerated carcass percentages with live weight(g) were 0.935 and 0.840 for male and female. respectively. Genetical relationships between total body fat percentages and abdominal fat pad(%) or carcass fat(%) tent to be very high and positive (0.804~0. 978). And corresponding correlations between abdominal fat pad and carcass fat percentages for male and female were 0.854 and 0.913 respectively.

農地資源利用에 關한 硏究

張東燮,金映秀 전남대학교 한국농어촌개발연구소 1984 농산어촌개발연구 Vol.19 No.-

The objectives of this study are; 1) to observe the actual situation and transitional process in the spatial-temporal utilization of agricultural land. 2) to analyze the major factors affecting utilization of land, 3) to find out to what extent these factors are affecting the land utiliztion, and 4) to suggest a policy recommendations that farmers could improve their farm income and self-sufficiency in food supply. Both secondary time-series data and cross-sectional raw data collected from direct survey in Chonnam province were pooled together. Then. a method of comparative analysis was employed in order to analyze the patterns of agricultural land use. The results of this study are summarized as follows; First, despite the numerous socio-econmic changes, there have been no significant change in agricultural land use in the past-two decades, either individually or farmers as a whole. Second, the consistency in the pattern of agricultural land use is thought to be due to the fact that agricultural production is performed mainly by small farmers, and that policy of self-sufficiency in food supply has been pursued. which is not necessarily contributing to improvements in farm income. Finally, in order to make full utilization of a limited agricultural land, a balanced land policy should be implemented in such a way that both improvements in farm income and self-sufficiency of food supply could be possible simultaneously. In summary. the efficiency in utilization of the extremely limited agricultural land Can be improved only when the farmers can make decisions based on the spirit of capitalism. Without the farmers interests counted on, a policy of agricultural land use may not be able to achieve the dual goal, i. e., improvement in self-sufficiency of food supply and in. farm income.