새만금간척지에서 뚱딴지(Helianthus tuberosus L.) 재배시 염류 특성변화 및 적정 자원 선발
The Selection of Proper Resource and Change of Salinity in Helianthus tuberosus L. Cultivated in Saemangeum Reclaimed Tidal Land
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초록
BACKGROUND: Soil salinity of reclaimed tidal land in Korea is highly important factor. High salinity is harmful to crop productivity. Jerusalem artichoke (Helianthus tuberosus L.) is known to be salt-tolerant and has high adaptability to diverse pedo-climatic conditions. The objective of this study was to assess the changes of soil properties and crop productivity according to salt concentration in the reclaimed tidal lands. METHODS AND RESULTS: Experimental sites were selected at Saemangeum (35°46’N, 126°37’E) reclaimed tidal land, and their dominant soil series were Munpo (coarse loamy, mixed, non-acid, mesic, typic Fluvaquents). H. tuberosus L were collected from 12 locations across Korea. Tubers were planted at 75×25 cm with EC 2 to 7 dS m-1. Soil samples were periodically collected from both 0~20 cm and 20~40 cm depths of each site. Soil salinity and soil moisture contents were varied depending on weather conditions. Soil electrical conductivity varied from 1.0 to 5.9 dS m-1, and soil moisture contents varied from 9.2 to 28.7%. The white-colored tubers of H. tuberosus L. collected from `Yeongwol-gun’exhibited the highest height (207 cm), followed by the white-colored tubers of H. tuberosus L. collected from‘Iksan-si’(202 cm). The white-colored tubers of H. tuberosus L. collected from ‘GyeongJu-si’showed the highest yield (549 kg/10a). The purple-colored tubers of H. tuberosus L. collected from ‘Yeongwol-gun’showed the highest yield (615 kg/10a). CONCLUSION: Our results indicate that the plant height and tuber yield did not appear to be correlated. Considering yield and inulin content, the GyeongJu-si seemed to be suitable as the white-colored tubers of H. tuberosus L. and the Yeongwol-gun seemed to be suitable as the purplecolored tubers of H. tuberosus L. in the reclaimed tidal lands. However, it is necessary to consider the relationship between the inulin content and the yield.
Abstract
BACKGROUND: Soil salinity of reclaimed tidal land in Korea is highly important factor. High salinity is harmful to crop productivity. Jerusalem artichoke (Helianthus tuberosus L.) is known to be salt-tolerant and has high adaptability to diverse pedo-climatic conditions. The objective of this study was to assess the changes of soil properties and crop productivity according to salt concentration in the reclaimed tidal lands. METHODS AND RESULTS: Experimental sites were selected at Saemangeum (35°46’N, 126°37’E) reclaimed tidal land, and their dominant soil series were Munpo (coarse loamy, mixed, non-acid, mesic, typic Fluvaquents). H. tuberosus L were collected from 12 locations across Korea. Tubers were planted at 75×25 cm with EC 2 to 7 dS m-1. Soil samples were periodically collected from both 0~20 cm and 20~40 cm depths of each site. Soil salinity and soil moisture contents were varied depending on weather conditions. Soil electrical conductivity varied from 1.0 to 5.9 dS m-1, and soil moisture contents varied from 9.2 to 28.7%. The white-colored tubers of H. tuberosus L. collected from `Yeongwol-gun’exhibited the highest height (207 cm), followed by the white-colored tubers of H. tuberosus L. collected from‘Iksan-si’(202 cm). The white-colored tubers of H. tuberosus L. collected from ‘GyeongJu-si’showed the highest yield (549 kg/10a). The purple-colored tubers of H. tuberosus L. collected from ‘Yeongwol-gun’showed the highest yield (615 kg/10a). CONCLUSION: Our results indicate that the plant height and tuber yield did not appear to be correlated. Considering yield and inulin content, the GyeongJu-si seemed to be suitable as the white-colored tubers of H. tuberosus L. and the Yeongwol-gun seemed to be suitable as the purplecolored tubers of H. tuberosus L. in the reclaimed tidal lands. However, it is necessary to consider the relationship between the inulin content and the yield.
참고문헌 (13)
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