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Young Nam An(안영남),Eun Seob Yi(이은섭),Jeong A Han(한정아),Hee Jung An(안희정),Ye Hyang Ahn(안예향),Won Suk Lee(이원석),Jung Soo Park(박중수) 한국약용작물학회 2021 한국약용작물학회 학술대회논문집 Vol.2021 No.1
Background : This study is designed to select a wide-shading facility model for ginseng, which is suitable for coping with the climate change and for saving labor for culture in Gyeonggi Area on the growth of 5-year old ginseng according to the micrometeorology and photosynthesis for each model. Methods and Results : Wide-shading facilities were installed per model in 2017, such as the slope-shading facility I (Gyeongsangbuk-do ARES), slop-shading facility II (Gyeonggi-do, ARES), and roof-type shading facility (RDA). The black shading nets were installed for the slope-shading facility I and the blue shading nets were installed for both slope-shading facility II and roof-type facility in mid-April, 2017. As for the slope-shading II, aluminum screens 40% were additionally installed in the high temperature period of summer (from July to August). On Apr. 3rd, 2017, 90 2-year seedlings were transplanted per each treatment area of 1.62㎡. Micrometeorological device were installed in the middle section of the wide slope-shading facility in order to measure the amount of light, temperature, leakage, thermal image and optical spectrum. The photosynthesis was measured in the middle section of small leaves by using a photosynthesis measuring device (LI-6400, Li-COR) at 9:00 - 10:00 at 200μ mol s<sup>-1</sup>m<sup>-2</sup>. During the high temperature period of July and August, the maximum temperature under the roof type wide-shading facility was higher than that under slope-shading facility I or slop-shading facility II. The optical spectrum analysis for each treatment indicated the followings; slop-shading facilities using black shading nets showed similar patterns for natural light but as for slope-shading facilities II and roof-type shading facilities which use blue shading nets, the penetration of yellow, green and red light was lower in the wide band spectrum of blue, green, yellow and red. In the thermal image comparison, the slope-shading facility I, slop-shading facility II and roof type shading facility showed similar temperatures of 42.6 - 43.6℃. As for the growth of the above-ground part of ginseng per broad band type and model, the slope-shading facility I and slope-shading facility II showed good results while as for the photosynthesis, the slope-shading facility II showed to be a little higher. As for the growth of underground part of 5-year old ginseng, the length, diameter and weight of root under the slope-shading facility I and slope-shading facility II were better than those of root-type shading facility while, as for the weight of ginseng roots, that under the slope-shading II (1.92 ㎏/1.62㎡) was higher by 0.56 ㎏ than that under root-type shading facility. Conclusion : It is concluded that considering the climatic environment and growth characteristics, the wide-shading facility model which is suitable for the Gyeonggi-do area is the slope-shading facility II.