http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
개별검색 DB통합검색이 안되는 DB는 DB아이콘을 클릭하여 이용하실 수 있습니다.
통계정보 및 조사
예술 / 패션
<해외전자자료 이용권한 안내>
- 이용 대상 : RISS의 모든 해외전자자료는 교수, 강사, 대학(원)생, 연구원, 대학직원에 한하여(로그인 필수) 이용 가능
- 구독대학 소속 이용자: RISS 해외전자자료 통합검색 및 등록된 대학IP 대역 내에서 24시간 무료 이용
- 미구독대학 소속 이용자: RISS 해외전자자료 통합검색을 통한 오후 4시~익일 오전 9시 무료 이용
※ 단, EBSCO ASC/BSC(오후 5시~익일 오전 9시 무료 이용)
Leaves and soil were sampled and analyzed for investigating yearly changes of the nutritional condition in dwarfed apple tree (Halus domestica Borkh) orchards in Jeobug area of Korea during 1979 through 1983. N was very low in both 1979 and 1980, but was leveled up to normal content from 1981. P showed normal content but was higher in Starkrimson than in Fuji. Ca was low in both 1979 and 1980 but it showed normal content after 1981, while Mg was a little higher but leveled down after 1981. Mg showed differences when compared with Ca. In soil chemical properties little changes in soil pH and organic matter was found but available P, K, Ca and Mg were changed similar to that of leaves. Dwarfed apple tree orchards in Jeonbug area showed a little poor condition in mineral nutrient but from 1981 the mineral content in leaves and soil was placed in normal condition.
The transmission of witchs' broom of Rhusjavanica L. was investigated by bud grafting and crown grafting in summer and by seeds collected from infected trees. The results were as follows. 1. Complet union of stocks and sions in bud grafting did not take place at all and the disease was not transmitted by bud grafting in summer. 2. Crown grafting with green shoots in summer was succeeded in 25%-35% of trees used in this experiment and only the trees which were succeeded by crown grafting were transmitted. 3. The seeds collected from diseased trees yilded healthy seedlings.
Twelve tree species growing near the reclaimed land of Kaehwa, Buan-Kun, Jeonlabug-Do province that were believed to be suitable for the windbreak and timber production, were selected and studied for their withering ratio and the contents of moisture, Na+, Cl-· and K+ in the roots of these trees. Results obtained are as follows: 1. The most suitable were found out to be Pinus Thunbergil, Robinia pseudo-acacia and Populus albaglandulosa, and the suitable were Populus euro-americanα. Koelreuteria pamculate acd Thuja ortentalis for planting in the Kaehwa reclaimed land. 2. The moisture content in the roots of Pinus Thunbergii, Robinia pseudo-acacia and Populus albaglandulosa, planted in the Kaehaw reclaimed land was remarkably low when compared to those planted in the none saline land. It was especially low during June through JuIy when relative humidity and the temperature were high. 3. In the roots of trees planted in the reclaimed land, Na+, and Cl-, content were relatively high in general. Na+ content was lowest during June through July but Cl- content was gradually increased from the beginning of the tree growth in May to the resting period of those tree growth. K+ content was remarkably decreased planted in saline area and gradually decreased in contents with times.
In pot experiments, two rice cultivars were transplanted into pots of saline soil and irrigated with saline water having electrical conductivity values of 2, 4.5, 8, 13 or 21 mmho/cm produced by dilluting sea water with fresh water a) from early tillering stage and b) from late tillering stage. Earley tillering stage treatment more retarded plant growth than late tillering stage treatment did. Average salinities in the root zone were higher than irrigation water. Leaf area, tillering, root length, dry weight of shoot and root decreased with increasing salinity with the greatest effect on leaf area. Root growth was generally depressed more than shoot growth.
In order to eliminate the resin from Keruing (Dipterocarpus) veneer, various solvents (methanol, benzene, xylene) were treated at boiling condition. The results were summarized as follows. 1. More than 90% of total resin included in veneer was extracted when boiled for 30 minutes with methanol, 2 hours with benzene and 1 hour with xylene. 2. The total ratio of resin extracted were 3.92%, 3.59% and 2.99% in methanol, benzene and xylene, respectively. 3. It is concluded that methanol was the most effective solvent for the elimination of the resin from Keruing(Dipterocarpus) veneer.
In order to evaluate the potential possibility of commercial organic fertilizer for Ginseng cultivation, an organic fertilizer made from by product of fermentation residue was applied to Ginseng nursery. The effect of commercial organic fertilizer and traditional compost made from wild grass and broad leaf for Ginseng cultivation were compared in terms of germination rate and growth status of Ginseng plant. To investigate the radiation sensitivity on the Ginseng seeds and yearling, r-ray was irradiated at 5 levels with different nitrogen sources, and germination rate, budding rate and growth status of Ginseng plant were measured. The obtained results are as follows. 1. The germination rate of commercial organic fertilizer treatment showed better condition than that of compost made from wild grass and broad leaf. 2. The budding rate and growth status of 1-year-old Ginseng was reduced by the increasing irradiation dosag. Especially it was significantly decreased at the level of 4,500r. and 6,000r. 3. The germination rate of Ginseng seeds was increased by the increasing irradiation dosage but it was remarkably reduced at the level of 4,500r. and 6,000r. 4. There was no difference on the germination rate and growth status of Ginseng seed among nitrogen fertilizers. But the growth of status of Ginseng seeds showed good condition in the order of NH4-N < erg.-N <NO3 -N.