• Title/Summary/Keyword: 장수지역

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Devolpment of Optimal Seed Production Methods Using Domestic Rye Cultivar in Jangsu Province (장수지역에서 국내육성 호밀품종의 채종재배기술 개발)

  • Song, J.H.;Han, O.K.
    • Journal of Practical Agriculture & Fisheries Research
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    • v.22 no.1
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    • pp.43-53
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    • 2020
  • The test conducted in this study was carried out for three years from 2013 to 2015 to investigate the optimal level of seeding amount and nitrogen fertilizer application to cultivate and produce the seeds of rye in Jangsu province, Jeollabuk-do. The variety of forage rye used in this experiment was 'Gogu', developed by National Institute of Crop Science, Suwon, Korea in 2004. The seeding rate was four levels (3, 5, 7 and 9 kg 10a-1, respectively) while nitrogen fertilized with respective amounts of 0, 3, 6, and 9 kg 10a-1. In Jangsu, the number of spike per m2 and lodging ratio were increasing, while fertility rate, 1 liter weight, 1000-grain weight and seed productivity were decreased by increasing of seeding rate from 3 kg 10a-1 to 9 kg 10a-1. There was an increase in the number of spike per m2, culm lengh, the number of grain per spike, lodging ratio and seed productivity, while productiove tiller, 1 grain weight, and 1 liter weight were decreased by increasing nitrogen fertilizer level from 3kg 10a-1 to 9 kg 10a-1. The best seeding rate and nitrogen fertilizer level for rye seed production were 5 kg and 6 kg 10a-1, respectively, considering plant lodging, seed and fertilizer reduction and the prevention of pollution by excess fertilization.

Notes on the Status and Conservation of Callipogon Relictus Semenov in Korea (장수하늘소 현황 및 보전방안)

  • An, Seung Lak
    • Korean Journal of Heritage: History & Science
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    • v.43 no.1
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    • pp.260-279
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    • 2010
  • The analysis on bibliography and field investigation of Callipogon relictus Semenov, 1898 (Korean natural monument number 218) shows that the size varies from country to country, and Korean specimens, for which male is 85~120mm and female is 65~85mm, are found to be the largest. The average diameter and length of egg are 2.60mm and 6.72mm respectively. The larva has milky color and is about 100~150mm in length. The pupa is nearly 70~110mm. An adult generally appears from June to September in Korea in the broadleaf forest of lowland, whereas it appears from June to July in China. It is known that the pupa largely feed on the old tree trunk of Carpinus laxiflora (Siebold & Zucc.) blume in Korea, but no such data have been reported in China and Russia, showing differences in host plants. While the larva period is not exactly known in Korea, it is reported to be two years in China. It appears that the species inhabits in very limited regions of approximately between geographical latitude $37.5^{\circ}{\sim}47.8^{\circ}$ and longitude $126^{\circ}{\sim}140^{\circ}$ including Korea, China and Russia. To conserve the long-horned beetle in Korea, this research drew out following some conclusions through analyzing the references and field survey data. First, it need to perform precise survey on the natural environment of occurring and collected area or place including host plant kinds, temperate, humidity, latitude, longitude etc. Second, habitat region must be designated as a restricted development area, and it need to exclude or reduce the damage factors to prosper reproduction of the species. Third, it is necessary to keep loosing cautiously artificial breeding individuals in the reported sites, not disturbing scope of natural populations. Fourth, it needs to educate or publicize many people importance and value of this species through many methods.

Spatial Characteristics of Change of Longevity Degree in Korea (한국 장수도 변화의 공간적 특성)

  • 정은진;송경언
    • Proceedings of the KGS Conference
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    • 2004.05a
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    • pp.28-28
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    • 2004
  • 본 연구는 1966년 이후 한국의 장수도 변화 현황을 분석한 것이다. 전국 시ㆍ군ㆍ구 단위 인구 통계 자료를 이용하여 65세 이상 인구에 대한 85세 이상 인구 비율을 구하고, 이것이 시간적ㆍ공간적으로 어떠한 변화의 특성을 나타내는지를 살펴보고자 하였다. 연구 결과 첫째, 1966년 이후 우리나라의 장수도 평균값은 지속적으로 상승해 왔음을 알 수 있다. 지역 간 표준편차는 1의 수준에서 비슷하게 나타나고 있다. (중략)

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Using Air Temperature and Sunshine Duration Data to Select Seed Production Site for Eleutherococcus senticosus Max (기온과 일도시간 분석에 의한 가시오가피의 파종적지 선정)

  • 박문수;김영진;박호기;장영선;이중호
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.40 no.4
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    • pp.444-450
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    • 1995
  • It was very hard to gather the seeds of Eleutherococcus senticosus Max. known as a medicinal plant for they tend to drop under the high temperature condition during the summer period in Korea. Therefore, this study was conducted to select seed production site for Eleutherococcus senticosus in Korea, comparing the climate of Hokkaido of Japan, in which the seeds have been produced, with that of various place in this country. It was low that the average maximum temperature during the hottest summer two months (July and August) as a 24.4$^{\circ}C$ in Hokkaido and 21.2$^{\circ}C$ in Daegwanryeong compared with 27.4$^{\circ}C$ in Changsu. Especially in Daegwanryeong, average maximum temperature from June to September remained as low as 21$^{\circ}C$. Effective accumulated temperature(>5$^{\circ}C$) was 807$^{\circ}C$ in Hokkaido and 964$^{\circ}C$ in Daegwanryeong during the ripening period. Monthly sunshined hours from July to August were 121.7~128 hours in Daegwanryeong and 83.5~85.4 hours in Hokkaido. The Eleutherococcus senticosus sprouts at 8.5$^{\circ}C$, comes to flowering season in mid-August, and ripens during late-August and October in Hokkaido, the climate of which is similar to that of Daegwanryeong.

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A Survey on the Soil Environments of Alpine Vegetable Housing in Honam Area (호남지역(湖南地域) 고냉채소단지(高冷菜蔬團地)의 토양환경연구(土壤環境硏究))

  • Yoo, Chul-Hyun;Cho, Guk-Hyun;Choi, Jeong-Weon;Park, Keon-Ho
    • Korean Journal of Soil Science and Fertilizer
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    • v.21 no.3
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    • pp.246-253
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    • 1988
  • This survey was carried out to obtain the basic information for the stable high yield of income-crops. Cropping systems, soil morphological and chemical properties were investigated. The obtained results were summarized as follows: 1. In Jinan and Jangsu, cultivated area of radish was 76.5% and.65.4%, respecitively, but in Unbong Chinese Cabbage, 71.1%, by second Crop. 2. In topographycal distribution, the mountain foot slope area in Jinan, Jangsu and Unbong was 69, 77 and 85%, respectively. In the distribution of elevation, semi-Alpine region in Jinan and Unbong was 85 and 69%, respectively, but Alpine region in Jangsu was 62%, of cultivated area. 3. Ploughing depth was 0 to 10 cm in Jinan and Jangsu, and 11 to 15cm, in Unbong. Gravel content class was 4th class in Jinan and 3rd class in Jangsu and Unbong. 4. For the distribution of soil types, normal upland came to 69.2% in Unbong, sandy and skeletal upland, 46.1 % and normal and sandy upland, 39 and 38%, respectively, in Jangsu. 5. The uplands soil classified as the 5th class, with improper for adequate cropping were. 6. For the chemical properties according to topography available phosphate $(-0.344^*)$, Ca $(-0.398^*)$, K $(-0.485^{**})$ and CEC $(-0.325^{**})$ showed the negative significancy with the elevation. 7. Among the variations of chemical properties by continuous cropping, the soil pH $(-0.491^{**})$ and the content of organic matter $(-0.434^{**})$, Ca $(-0.705^{**})$, CEC $(-0.512^{**})$, total nitrogen $(-0.559^{**})$ showed the high negative correlations, while the contents of available phosphate $(0.671^{**})$ and K $(0.543^{**})$ showed the high positive correlations, with the number of years of continuous cropping.

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Regional Differentials in Mortality in Korea, 1990-2000 (사망력 수준의 시ㆍ군별 편차 및 그 변화 추이, 1990∼2000)

  • 김두섭;박효준
    • Korea journal of population studies
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    • v.26 no.1
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    • pp.1-30
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    • 2003
  • This paper attempts to explore the effects of ecological and socioeconomic factors on the level of mortality and the changing trends of such effects during the period of 1990∼2000. For this purpose the population census data and micro-data from the vital statistics for years 1990, 1995 and 2000 were used. As indicators of mortality, the crude death rate(CDR), the standardized death rate(SDR) and the longevity rate were calculated for 170 'Si' s and 'Gun's. Using GIS, this paper first presents the mortality and longevity maps for years 1990, 1995 and 2000. Then ANOVA and regression analyses are carried out in an effort to generalize the effects of ecological and socioeconomic factors on the CDR, the SDR and the longevity rate. When the mortality and longevity maps are examined, three indices of mortality are found to be markedly high in the southwest coastal regions of Cholla-Nam-Do. By contrast, Seoul and Pusan metropolitan areas show substantially low level of mortality and longevity in these indices. It is also found that the regional differentials in the SDR and the longevity rate show a trend of becoming smaller after 1990. The research, however, does not find any linear relationship between the SDR and the longevity rate. The causal mechanisms of the two indices are found to be different. The results of the ANOVA and the regression analysis reveal that the locational factors of both mountainous and farming regions tend to increase the CDR and SDR while both coastal and farming regions disclose a tendency of increasing the longevity rate. The level of statistical significance of these analytical results is found to be weaker when socioeconomic factors such as education, income, marital status, availability of medical care, and sanitary conditions of the region are taken into account. The regional differentials in the mortality level seem to have a clear relationship not only with the socioeconomic factors but also with the age structure influenced by the age selectivity of migration during the past 40 years.