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        연구보문 : 자연과학; 남부평야지에서 추석전 수확을 위한 벼 생태형별 이앙시기 설정

        박홍규 ( Hong Kyu Park ),구본일 ( Bon Il Ku ),강신구 ( Shin Gu Kang ),최민규 ( Min Kyu Choi ),상완규 ( Wan Gyu Sang ),김영두 ( Tae Seon Park ),남정권 ( Young Doo Kim ),박태선 ( Kwon Jeong Nam ),김보경 ( Bo Kyeong Kim ) 한국국제농업개발학회 2013 韓國國際農業開發學會誌 Vol.25 No.3

        The price of newly harvested rice before Chusoek, the autumn festival celebrated on the 15th day of the 8th lunar month, is high. However it is difficult for farmers to decide transplanting date with specific cultivars for shipping newly harvested rice before Chusoek because the dates for Chuseok holiday is changing every year based on the Lunar Calendar. This study was conducted to provide farmers a table of rice transplanting dates for each maturity groups by calculating heading dates and ripening periods. The earliest transplanting region were estimated in Daegu and Changwon on April 16, and the latest region was Bonghwa on May 13 when the average temperature for 7 days from transplanting exceeding 15oC. For the early maturity group, days to heading from transplanting were 76 and 57 days when they transplanted on May 10 and June 25, respectively. Average temperatures during the periods were 22.1oC and 25.9oC, respectively. However, accumulated temperature was higher in the earlier transplanting due to longer growing days. For the medium maturity group, days to heading from transplanting were 95 and 72 days when they transplanted on April 21 and June 4, respectively. Average temperatures during the periods were 20.3oC and 24.7oC, respectively. For the mid-late maturity group, days to heading from transplanting were 108 and 82 days in April 20 and May 23 transplanting, respectively. Average temperatures during the period were 21.5oC and 24.0oC, respectively. As the rice growing is available from May 10 (above 16oC) in southern plain area of Korea, rice growers who transplant on May 10 can sell their newly harvested grain as soon as possible from on September 11 with early maturity group, September 24 with medium maturity group, and October 4 with mid-late maturity group.

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