• 한국작물학회지
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• 제35권4호
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• pp.315-319
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• 1990

결명을 비닐피복과 무피복 재배하에서 파종기 이동에 따른 생육 및 수량의 특성을 검토하여 남부지방의 결명재배 체계확립을 위한 기초자료로 이용하고자 시험했던 바 그 결과를 다음과 같다. 1. 출현일수와 성숙기는 무피복구보다 비닐피복구에서 빨랐고 특히 성숙기는 비닐피복구가 무피복구에 비해 약 30일 정도 빨랐으며 특히 4월 10일 파종기에서 가장 빨랐다. 2. 경장, 경직경, 분지수, 1주협수, 협장, 1협립수 등의 모든 형질이 비닐피복구에서 우수하였으며 이들 생육특성 중에서 경직경과 분지수는 파종기가 늦으면 작거나 적어지는 경향이었으나 경장, 1주협수, 협장, 1협립수 등의 형질은 4월 10일을 기점으로 이보다 빠르거나 늦으면 작거나 적어지는 경향이었다. 3. 천립중과 종실수량 역시 비닐피복구에서 높았으며 4월 10일 파종구를 기점으로 이보다 파종기가 빠르거나 늦으면 적어지는 경향이었다. 4. 비닐피복과 무피복 재배하에서 파종기에 따른 유용형질들의 분산분석에서 높은 유의성의 변이를 보였고 이들의 상호작용에서도 모든 형질에서 유의성이 인정되었다.

• 한국잡초학회지
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• 제12권3호
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• pp.200-222
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• 1992

The results of recent researches for improvement of seedling stand in direct seeded rice on the dry paddy in Korea were summarized as the following ; a variety to be cultivated should be chosen the characteristics of high percentage germination under low temperature, shorter period of shoot emergence, and better growth of the mesocotyl and shoots. Meanwhile, there was 40% increase in seedling stand at the treatment of removal of the seed awn under using the drill seeder. After seeding the rice seed covered with soil of 3cm depth was better seedling emergence and also there was the hightest seedling emergence at the 70% of moisture content of the soil. In addition, the application of the Release containing GA 10% enabled to increase the seedling stand and furthermore it was effective under deep seeding depth. The optimum seeding date should be seeded around May 10 when mean air temperature is above 12-13$^{\circ}C$ so that may establish more less 70% in seedling stand. Based on an appropriate seedling stand of 150/$m^2$, the optimum seeding rate was 5kg/10a. It was the best in seeding method using drill seeder and the most desirable recommended seeding method was the drill seeder in terms of seedling stand. In order to improve seedling stand water management was more effective in canal irrigation and in drainage at 6hr after irrigation following by the seeding process. On the other hand, for the increase of seedling stand under flooded condition a variety might have characters being better germination at low concentration of dissolved oxygen and vertically deeper growing of the crown root. Also, seedling stand was able to increase with the seed coating of $CaO_2$in the flooded soil. It was possible to be seeded on the early part of May being mean air temperature of avove 10$^{\circ}C$ and the optimum seeding rate was 5kg/10a. For an effective water management water would be flooded up to 3cm depth for 2-3 weeks after seeding. The rice plant grown under the direct seeded cultivation might be not so much strong in lodging resistance compared to that grown under the transplanting and moreover direct seeded rice cultivation under flooded condition would be more weak growth of the rice plant than that on dry paddy. Meanwhile, the lodging would be affected by the seeding rate, the soil depth after seeding. and seeding method even in the same variety. In particular, roots in the lodging pattern of direct seeded rice cultivation under flooded condition were largely distributed on the soil surface so that resulted easily in the lodging. In general, the lodging resistance would be greater as seeding rate and amount of N fertilizer application are lower and soil depth after seeding is higher. Among the introduction of different seeding method the high ridged drill seeding method on dry paddy soil resulted in the lowest in the lodging index and also it was lower in the drill seeding method than in the scattering seeding method under flooded condition. In case of more than 150 seedlings per $m^2$ there was a severe lodging due to high lodging index at the 3rd and 4th internodes. The effective lodging prevention was able to at the treatment of the Inabenfide at 45 days before heading and the Uniconazol at 15 days before heading which caused the shortage by 10-15cm in culm length. Also, fertilizer management using split application of nitrogen would be contributed the reduction of lodging at the rate of 20-30-20-20-10%(basal-5th leaf stage-7th leaf stage-panicle initiation stage-heading stage) on the dry paddy soil.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2005년도 추계학술대회 논문집
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• pp.57-61
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• 2005

The objectives of this study are to illustrate an alternative housing type responding to the social requirements and customers' needs, to suggest the improvement plan for the related laws and regulations through survey of the actual condition for housing buildings such multi have been raised in classification due to that the existing law systems including the current use classification of residential buildings have been defined unclearly. Especially, various social problems have yielded in line with emergence of the housing type which is not legally classified as residential however used for the living purpose practically. Current zoning planning and related law system have rigidity. So, It is required to introduce a flexible classification system which protects the residential environment based on the housing purpose, function and habitability and provides correspondence between residence and ownership/management method. The legal classification system should be revised in a way that the housing use classification corresponds with the zoning system through breakdown of the use classification system

• 한국지역사회생활과학회지
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• 제17권3호
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• pp.89-97
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• 2006

This study was conducted to compare soybean growth and yield and the degree of weed emergence according to no-tillage and conventional tillage system in two different drained paddy fields, loam of Chilgok series and silty clay loam of Deokpyeong series. In both soil conditions, the maturing time of the soybeans by the no-tillage system was two days earlier than that by the conventional tillage system. In the loam of Chilgok series, the stem length of the soybeans in the no-tillage system was 5.7 cm longer than that in the conventional tillage system. The miss-planted rate and diseased plants of black root rot (Calonectria iliacola) in the no-tillage system were 9.2% and 2.8% lower, respectively than those in the conventional tillage system. Also, the nodulation and seed yield in the no-tillage system were 32% and 13% more, respectively, than those in the conventional tillage system. In the silty clay loam of Deokpyeong series, the stem length of the soybeans in the no-tillage system was 4.6cm shorter than in the conventional tillage system. The diseased plants of black root rot (Calonectria iliacola) in the no-tillage system were 4.2% lower than those in the conventional tillage system. Also, no significant difference in the seed yield between the no-tillage and conventional tillage systems was observed. On the other hand, there was a lower occurrence of weed in the no-tillage system than in the conventional tillage system, and the income increased by 19% owing to yield increase and reduced management costs.

• 한국응용곤충학회지
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• 제17권4호
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• pp.187-191
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• 1978

본 실험은 끝동매미충의 온도와 일장조건에 따른 발육도 및 증식능력을 조사하여 실내 대양사육에 적합한 온도와 일장의 범위를 밝히고 나아가 온도와 발육속도와의 함수관계를 유도하는데 필요한 기초자료를 얻고자 수행하여 다음과 같은 결과를 얻었다. 1. 비교적 고온조건인 $33^{\circ}C$와 $35^{\circ}C$에서 약충의 발육이 빠르a 우화율이 높았으나 변온처리($28^{\circ}C$와$319{\circ}C$ 각 12시간)에서는 발육이 지연되었다. 2. 성충의 산란력은 고온$(35^{\circ}C)$)에서 약충기를 거친 성충은 산란수가 매우 적었으나 $29^{\circ}C$에서 우화한 성충은 고온$(33^{\circ}C)$에서 많은 산란을 하였다. 3. $29^{\circ}C$에서의 일장은 약충의 발육 및 우화율에 큰 영향을 미치지 못했다. 4. 약충의 발육속도는 $29^{\circ}C$까지는 온도가 상승함에 따라 직선적으로 빨라졌으나 고온$(33-35^{\circ}C)$에서는 증가율이 둔화되는 결과를 얻었다. 5. 이상의 결과로 적합한 사육조건은 약충기에 $27-29^{\circ}C$, 성충기에 $33^{\circ}C$인 것으로 생각된다.

• 한국작물학회지
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• 제19권
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• pp.100-131
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• 1975

To obtain basic information on the improvement of naked barley production. and to clarify the relation-ships between yield or yield components and some meteorogical factors for yield prediction were the objectives of this study. The basic data used in this study were obtained from the experiments carried out for 16 years from 1958 to 1974 at the Chon-nam Provincial Office of Rural development. The simple correlation coefficients and multiple regression coefficients among the yield or yield components and meteorogical factors were calculated for the study. Days to emergence ranged from 8 to 26 days were reduced under conditions of mean minimum air temperature were high. The early emergence contributed to increasing plant height and number of tillers as well as to earlier maximum tillering and heading date. The plant height before wintering showed positive correlations with the hours of sunshine. On the other hand, plant height measured on march 1st and March 20th showed positive correlation with the amount of precipitation and negative correlation with the hours of sunshine during the wintering or regrowth stage. Kernel weights were affected by the hours of sunshine and rainfall after heading, and kernel weights were less variable when the hours of sunshine were relatively long and rainfalls in May were around 80 to 10mm. It seemed that grain yields were mostly affected by the climatic condition in March. showing the negative correlation between yield and mean air temperature, minimum air temperature during the period. In the other hand, the yield was shown to have positive correlation with hours of sunshine. Some yield prediction equations were obtained from the data of mean air temperature, mean minimum temperature and accumulated air temperature in March. Yield prediction was also possible by using multiple regression equations, which were derived from yield data and the number of spikes and plant height as observed at May 20th.

• 한국수산과학회지
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• 제32권1호
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• pp.112-116
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• 1999

톳 포복지의 재생력을 이용하므로써, 수확후 남겨지는 포복지로 부터 재생된 엽체를 양식의 종묘로 재사용하고자 하였다. 엽체 채취후 남겨진 포복지를 연승과 함께 수거하여, 1995년 5월부터 11월까지 조간대의 인공 노출 조건 (1일 0, 1, 2, 3시간)에서 월하관리하여, 엽체의 재생 여부를 실험하였다. 재생엽체의 생장은 엽체의 전장, 주지수 및 중량으로 나타내었다. 생산성 비교를 위하여 재생엽체를 현재 양식방법에서 사용되고 있는 자연산 종묘와 함께 동일 양식장에 이식하여 1995년 12월부터 1996년 5월까지 양성실험을 실시하였다. 생산성 비교 결과 재생엽체와 자연산 유체를 사용한 경우 유의한 차이가 없는 것으로 나타났으나, 포복지의 재사용으로 자연군락으로부터 매년 유체를 채취하지 않고도 계속적인 양식생산을 할 수 있다.

• 한국작물학회지
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• 제52권3호
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• pp.249-258
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• 2007

Experiments were conducted with aims to (1) estimate the biomass yield potential, (2) characterize the biomass and digestible dry matter production, and (3) reveal the characteristic seedling establishment of a whole crop rice variety, Nogyangbyeo, in dry- and wet-seeded rice. Maximum aboveground total biomass of Nogyangbyeo was 18 t $ha^{-1}$ in dry-seeded rice and 20 t $ha^{-1}$ in wet-seeded rice. Biomass yield potential of Nogyangbyeo was lower than that of Dasanbyeo. Comparatively, Nogyangbyeo was straw-dependent and Dasanbyeo was grain-dependent for biomass accumulation. Percentage of digestible dry matter (DDM) was higher in panicles than straw. Digestible dry matter yield was determined mainly by biomass yield rather than DDM percentage. Number of seedling establishment in Nogyangbyeo was $73m^{-2}$ in dry-seeded rice and $109m^{-2}$ in wet-seeded rice. Poor seedling establishment of dry-seeded Nogyangbyeo in the field condition was the result of low seed germination under low temperature and poor seedling emergence by deep sowing. Low seedling emergence rate of Nogyangbyeo was attributed mainly to slow elongation growth by slow leaf development and partly to mesocotyl and 1st internode lengths, not to genetically defined leaf length. The slow elongation growth of Nogyangbyeo was the same even in the high daily mean temperature of $24^{\circ}C$. Results suggest DDM yield in rice can be improved simply by increasing biomass and whole crop rice varieties should be adaptable to direct-seeding.

• 한국응용곤충학회지
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• 제44권4호
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• pp.341-344
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• 2005

실험실 조건에서 고구마 뒷날개흰밤나방의 교미 전 행동습성을 관찰하였다. 짝이 있고 어두운 상태에서 안테나를 치켜세우고 날개를 진동하는 습성을 보였으며, 암컷과 수컷 모두 날개를 진동하고 안테나를 치켜세우는 행동을 보이다가 수컷이 암컷에게로 날아가는 습성을 보였다. 불이 꺼진상태로 20여분이 지나면 안테나를 치켜세우는 반응을 보이기 시작하였으며 40분이 지났을 때부터 마치 짝을 유인하는 음향을 생성하듯이 날개를 빠르게 진동하는 반응을 보였다. 짝짓기는 우화 후 이튿날부터 관찰되었으며 대부분 4일에서 6일 사이에 짝짓기를 하였다. 짝짓기는 평균 207분 동안 지속되었고, 대부분 3회까지 반복적으로 교미를 하였다. 관찰결과를 종합적으로 분석해보면 암컷이 신호를 보내고 수컷이 이에 반응하는 것으로 보이며, 암컷이 내는 음향이 뒷날개흰밤나방의 교미전 행동습성에 관련되어 있을 가능성이 높은 것으로 판단되었다.

• 한국작물학회지
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• 제26권1호
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• pp.115-120
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• 1981

토양수분이 인삼생육에 미치는 영향을 조사하기 위하여 토경Pot(1/2000cm)에 묘삼을 이식하여 토양수분함량별 지상부 및 지하부 생육장황, 근수량과 지상부 형질과의 상호관계를 조사하여 다음과 같은 결과를 얻었다. 1. 인삼생육에 대한 토양의 적정수분 함량은 포장용수량의 65. 5%(절대수분 22.1%였고 생육이 정지되는 토양수분 함량은 포장용수량의 31.5%(절대수분 10.7%)였다. 2. 토양수분 함중이 적은 곳에서는 출아 및 전엽율이 상당히 지연되었으며 엽면적외 감소와 지상부 결주가 많아져 근수량이 현저히 감소되였다. 3. 근수량은 엽면적(r=0.91**) 경직경(r=0.76**) 경장(r=0.71**) 지상부생중(r=0.96**)간에 각각 정의 상기관계가 있었고 지상부 결주율(r=-0.77**) 간에 부의 상관관계가 있었다. 4. 생근중과 수분함량(r=- 0.80**)간에 부의 상관관계가 있어 수분이 충분한 곳에서 자란 인삼은 조직이 치밀함을 나타내었다.