[논문]United Arab Emirates 사막환경에서 벼 재배를 위한 재배기간, 유전자원 및 수량 특성 연구

정재혁; 황운하; 이현석; 양서영; 최명구; 김준환; 김재현; 정강호; 이수환; 오양열; 이광승; 서정필; 정기열; 이재수; 최인찬; 유승화; 최순군; 이슬비; 이은진; 이충근; 이충근

doi:10.5532/kjafm.2022.24.3.133

United Arab Emirates 사막환경에서 벼 재배를 위한 재배기간, 유전자원 및 수량 특성 연구
Study on the Characteristics of Cultivation Period, Adaptive Genetic Resources, and Quantity for Cultivation of Rice in the Desert Environment of United Arab Emirates 원문보기

한국농림기상학회지 = Korean Journal of Agricultural and Forest Meteorology, v.24 no.3, 2022년, pp.133 - 144

초록
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본 연구는 UAE 사막환경에서 벼 재배를 위해 재배기간, 적정 벼 유전자원, 생육발달 양상, 물 사용량 등을 조사하고자 수행하였다. UAE 사막환경에서 벼의 재배기간은 UAE 겨울의 저온을 벼의 영양생장기간 동안에 포함하는 11월 하순부터 이듬해 4월 하순까지 이었다. UAE의 기온과 일장에 적응할 수 있는 유전자원을 국내의 인공기상 시설과 간척지 모래토양에서 사전 시험한 결과, 아세미와 FL478이 선정되었다. 사막환경에서 아세미는 생육초기의 황화현상을 극복하여 수확까지 하였으나, FL478은 생육 초기에 황화현상과 생육이 불량하여 고사하였다. UAE 사막환경에서 아세미는 12월 초순부터 이듬해 3월 초순까지 영양생장기, 3월 초순부터 3월 하순까지 생식생장기, 3월 하순부터 4월 하순까지 등숙기의 분포를 보였다. 아세미의 백미수량은 763kg/10a이었고, 한국과 비교하여 약 41.8% 증가한 수량으로 생식생장기와 등숙기의 풍부한 일사량의 영향으로 추정된다. 물 사용량은 UAE 재배기간 동안 2,619 ton/10a 수준으로 한국보다 약 3배 많아 물 절약 기술이 필요한 상황이다. UAE에서 벼 재배는 경제성과 관련이 매우 높기 때문에, 물 절약을 위해서 관개기술, 재배방법 개발 등이 보완되어야 한다. 또한 UAE 사막환경에서 안정적인 벼 재배를 위해서 다양한 적응 유전자원 선정, 생육초기의 황화현상 최소화 방법 등의 추가 연구가 필요할 것으로 판단된다.

Abstract ▼ AI-Helper

This study was conducted to investigate the cultivation period, adaptive genetic resources, growth and development patterns, and water consumption for rice cultivation in the desert environment of United Arab Emirates (UAE). R esearch on rice cultivation in the desert environment is expected to contribute to resolving food shortages caused by climate change and water scarcity. It was found that the optimal cultivation period of rice was from late November to late April of the following year during which the low temperature occurred at the vegetative growth stage of rice in the UAE. Asemi and FL478 were selected to be candidate cultivars for temperature and day-length conditions in the desert areas as a result of pre-testing genetic resources under reclaimed soil and artificial meteorological conditions. In the desert environment in the UAE, FL478 died before harvest due to the etiolation and poor growth in the early stage of growth. In contrast, Asemi overcame the etiolation in the early stage of growth, which allowed for harvest. The vegetative growth phases of Asemi were from early December to early March of the following year whereas its reproductive growth and ripening phases were from early March to late March and from late March to late April, respectively. The yield of milled rice for Asemi was 763kg/10a in the UAE, which was about 41.8% higher than that in Korea. Such an outcome was likely due to the abundant solar radiation during the reproductive growth and grain filling periods. On the other hand, water consumption during the cultivation period in the UAE was 2,619 ton/10a, which was about three times higher than that in Korea. These results suggest that irrigation technology and development of cultivation methods would be needed to minimize water consumption, which would make it economically viable to grow rice in the UAE. In addition, select on of genetic resources for the UAE desert environments such as minimum etiolation in the early stages of growth would be merited further studies, which would promote stable rice cultivation in the arid conditions.

주제어

표/그림 (15)

그림 Fig. 1. Location information of rice field.
표 Table 1. Rice types and characteristics of genetic resources for rice cultivation in UAE
그림 Fig. 2. Comparison of weather conditions in UAE (Al Dhaid) and Korea (Jeonju). (A) Mean temperature (2009-2018), (B) Solar radiation (2009-2018), (C) Sunshine duration.
그림 Fig. 3. Basic vegetative phase of genetic resources.
표 Table 2. Growth characteristics under sand soil
그림 Fig. 4. Pictures of rice growth. (A) Asemi field, (B) FL478 field, (C) Normal rice, (D) Etiolation rice.
표 Table 3. Etiolation area and damage grade of Asemi by period in UAE
표 Table 4. Etiolation area and damage grade of FL478 by period in UAE
표 Table 5. Period and temperature by growth stages of Asemi rice in UAE
표 Table 6. Rice yield component and milled rice yield in UAE
표 Table 7. Comparison of solar radiation in UAE and Korea during rice cultivation period
표 Table 8. Physical properties of rice field soil in UAE
표 Table 9. Chemical characterization of rice field soil in UAE
표 Table 10. Water quality of rice field in UAE
표 Table 11. The water consumption of rice field in UAE

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