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생육시기별 광량조절이 인삼의 지상부 생육에 미치는 영향
천성기(Seong-Ki Cheon),이태수(Tae-Su Lee),윤종혁(Jong-Hyuk Yoon),이성식(Sung-Sik Lee) 고려인삼학회 2003 Journal of Ginseng Research Vol.27 No.4
This study was conducted to compare the growth status of aerial parts, photosynthesis and microclimate between fixing light transmittance (Control) and changing light transmittance (C.L.T.) during ginseng growing seasons. Control showed 8% light transmittance rate during growing seasons. But C.L.T. showed 18% light transmittance rate during early (April-June) and late growth stage (September-October) and 6% light transmittance rate middle growth stage (July-August). Air temperature, leaking water rate and soil water content of C.L.T. was higher than those of control during early and late growth stage. But Air temperature, leaking water rate and soil water content of C.L.T. was lower than those<br/> of control during middle growth stage. C.L.T. exhibited superiority in survival ratio, stem diameter, stem length, L.A.I. and stem angle compared to control. Chlorophyll content of C.L.T. was lower than that of control but S.L.W., stomatal opening and photosynthetic rates of C.L.T. was higher than those of control. Also Alternaria blight disease and defoliation of C.L.T. was lower than those of control.
생육시기별 광량조절이 인삼의 수량 및 품질에 미치는 영향
천성기(Seong-Ki Cheon),이태수(Tae-Su Lee),윤종혁(Jong-Hyuk Yoon),이성식(Sung-Sik Lee),목성균(Sung-Kyun Mok) 고려인삼학회 2004 Journal of Ginseng Research Vol.28 No.4
This study was conducted to compare the root weight, yield, quality of fresh and red ginseng roots and crude saponin content in roots between fixing light transmittance(Control) and changing light transmittance(C.L.T.) during the ginseng growing seasons. The root weight in C.L.T. was higher than control by 35% in early growth stage, 28% in middle growth stage and 26% in late growth stage in 6 years old ginseng plant. Root yield per 10a in C.L.T. was increased about 40% as compared with that of control, also 1st and 2nd grade of fresh ginseng roots in C.L.T. was higher (50.3%) compared with that (12.9%) of control. The specific gravity of ginseng roots grown under the C.L.T. was exhibited the significant difference than control during the growing season in 4 and 6 years old ginseng plants. Red ginseng quality in C.L.T. was not only improved remarkably due to the increasement of heaven and earth grade red ginseng but also increased in crude saponin content than control. Therefore it needs to change the light transmittance(increasing light during low temperature periods and decreasing light during high temperature period) during the growing season for high yield and good qualities of ginseng roots.
약토 시용방법이 인삼 양직묘 지상부 생육에 미치는 영향
이성식(Sung-Sik Lee),천성기(Seong-Ki Cheon),이태수(Tae-Su Lee),윤종혁(Jong-Hyuk Yoon),박현석(Hyeon-Suk Park),신성련(Seong-Lyon Shin),최광태(Kwang-Tae Choi),이갑수(Gab-Soo Lee),주성돈(Seong-Don Ju),정재동(Jae-Dong Chung) 고려인삼학회 2004 Journal of Ginseng Research Vol.28 No.4
This experiment was conducted to determine the economic application method of Yakto among 6 application method: amount of Yak to application 3 plot(70ℓ, 25.5ℓ,13.3ℓ/kan;180cmx90cm), and added side dressing(3ℓ/kan) each plot. The reduced amoumt ofYakto application(25.5ℓ, 13.3ℓ/kan) were lower the contents of inorganic nitrogen, P₂O_5, K, Ca and Mg, but similar pH in bed soil compared with standard Yakto application(70ℓ/kan). Side dressing applicated on 29 May increased the contents of inorganic nitrogen, P₂O_5, K, Ca, Mg and salt concentration in bed soil compared with nonside dressing in each Yakto application plot(70ℓ, 25.5ℓ, 13.3ℓ/kan). The reduced amoumt ofYakto application(25.5ℓ/kan) added side dressing(3ℓ/kan) were similar the contents of inorganic nitrogen, K, Mg and salt but lower PPs and Ca in bed soil compared with standard Yakto application(70ℓ/kan) in June. The reduced amoumt of Yak to application(25.5ℓ/kan) added side dressing(3ℓ/kan) was similar the contents of P, K, Ca and Mg but lower N in leaves compared with standard Yakto application(70ℓ/kan). The reduced amoumt of Yakto application(25.5ℓ/kan) added side dressing(3ℓ/kan) was shorter stem length, and higher 5% chlorosis of leaf tip, but similar emergence ratio, survival ratio, leaf senescence ratio, chlorophyll, stem diameter and leaf area compared with standard Yakto application(70ℓ/kan). These suggested that 25.5ℓ Yakto application added side dressing(3ℓ/kan) per kan might be possible economical application method of Yakto.
이성식(Sung-Sik Lee),천성기(Seong-Ki Cheon),이장호(Jang-Ho Lee),안인옥(In-Ok Ahn),신성련(Seong-Lyon Shin),최광태(Kwang-Tae Choi),이갑수(Gab-Soo Lee),이형식(Hyung-Sik Lee),정재동(Jae-Dong Chung) 고려인삼학회 2004 Journal of Ginseng Research Vol.28 No.4
This experiment was conducted to determine economic application method of Yakto among 6 application method: amount of Yakto application 3 plots(70ℓ, 25.5ℓ, 13.3 ℓ/kan), and added side dressing(3ℓ/kan) each plot. The reduced Yakto application(25.5ℓ/kan) with side dressing(3ℓ/kan) showed similar root diameter, fresh weight of roots and yield of good seedlings to standard Yakto application(70ℓ/kan). And also this application method of Yakto gave similar content of Ca and Mg, but the lower content of N, P, K in roots to standard Yakto application(70ℓ/kan). These suggested that 25.5ℓ Yakto application added side dressing(3ℓ/kan) per kan might be economical application method of Yakto.
적변삼 외피에서 지질, 페놀성물질 및 철 성분의 축적에 관한 연구
이태수(Tae Su Lee),목성균(Sung Kyun Mok),천성기(Seong Ki Cheon),윤종혁(Jong Hyuk Yoon),백남인(Nam-In Baek),최정(Jyung Choe) 고려인삼학회 2004 Journal of Ginseng Research Vol.28 No.3
The study was conducted to investigate the tissue and chemical characteristics of rusty root epidermal cells. In histological study. the rusty symptoms were frequently observed in the epidermis of ginseng root and to be yellow under microscopic observation. Disks of the epidermal cell tissue of the rusty root were usually 2 and 3 times greater in the number of cell layer and thickness of cell wall than the healthy root. respectively. The color degree of methanol extracts li'om the rusty root epidennis was 5.5 times higher than that of the healthy root. And the extracts of rust matter in the root epidermis were easily dissolved in polar solvents compared to nonpolar solvents. UV-absorption spectra of methanol extracts in various fractions of phenolics showed a maximum peak between 275-280 nm. The crude lipids and phenolic compounds such as acid insoluble bound phenolics. acid insoluble esterified phenolics. acid insoluble condensed phenolics. insoluble bound phe-noli cs and free phenolics were also more in the rusty root epidennis than in the healthy one. Fe content in the rusty root epi-dermis was 2.7 times higher than that of healthy one. It was presumed that the phenolic compounds(precursor of the rusty) in association with lipid and iron in the root epidermis might defence the root when ginseng root was depressed by the unfavorable conditions in soil ancvor portions of a root system were subjected to anoxic conditions.<br/>