간척지에서 토양 염농도별 케나프의 생육반응 및 수량성

• 영문명: The Growth Phase and Yield Difference of Kenaf (Hibiscus cannabinus L.) on Soil Salinity in Reclaimed Land
• 발행기관: 한국작물학회
• 저자명: 강찬호(Chan-Ho Kang) 최원영(Weon-Young Choi) 유영진(Young-Jin Yoo) 최규환(Kyu-Hwan Choi) 김효진(Hyo-Jin Kim) 송영주(Young-Ju Song) 김정곤(Chung-Kon Kim)
• 간행물 정보: 『한국작물학회지』제59권 제4호, 511~520쪽, 전체 10쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2014.12.30

영문 초록

Kenaf (Hibiscus cannabinus L.) was recognized as a potential source of forage. To reduce the production cost, we should insure large cultivation area. The one of the best candidate places to expand the useful kenaf production was ‘Saemangeum’ reclaimed land. To confirm the possibility of kenaf growth in reclaimed land, we seeding and cultivated the kenaf in ‘Saemangeum’. The germination percentage of kenaf on 5.0 dS/m soil salinity was 18%. It is less 66% than that of 4.0 dS/m soil salinity and at 6.0 dS/m, the germination percentage of kenaf was under 10%. The growth and development of kenaf in reclaimed land grew worse with increasing soil salinity. The stem diameter which the most important factor that decide the value and yield of product was upper 2.6 cm when soil salinity maintained under 4.0 dS/m, but if soil salinity marked over 4.0 dS/m, the stem diameter of kenaf was drop under 2.0 cm and it deteriorate the number of leaves per plant by 20~46%. The necrosis on older tip and marginal leaves were noted approximately first month after seeding which was correlated directly with the salinity levels of reclaimed soil. Reduction of total yield was coincide with increasing levels of EC. If soil salinity over 5.0 dS/m, the amount of decreased by soil salinity was 51% than that of non-reclaimed region. The allowable soil salinity level of which could be maintained within 20% reduction rate was 4.2 dS/m. Consequently kenaf can be grown successfully with moderately saline soil condition. However, salt levels in excess of 4.2 dS/m severely have restricted plant growth and development and will result in significant yield reduction.

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키워드

Kenaf (Hibiscus cannabinus L.) reclaimed land salt tolerance