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남부평야지에서 고품질 쌀 생산을 위한 "수광"의 적정 이앙시기
김영두 ( Young Doo Kim ),강신구 ( Shin Gu Kang ),구본일 ( Bon Il Ku ),상완규 ( Wan Gyu Sang ),조서리 ( Seo Ri Jo ),박홍규 ( Hong Kyu Park ),신운철 ( Woon Chul Shin ),고종철 ( Jong Cheol Ko ),양운호 ( Woon Ho Yang ),김보경 ( Bo Kye 한국국제농업개발학회 2015 韓國國際農業開發學會誌 Vol.27 No.1
A field experiment was conducted to determine the optimal transplanting date for ‘Sukwang’, a high grain quality japonica rice, in the southwestern plain area in South Korea. 25-day-old seedlings were transplanted four times by 15 days interval on May 16, June 1, 16, and 30 in 2013 and 2014. Heading dates were August 12 and August 29 in the first and the last transplanting, respectively. Ripening ratio was highest in June 1 and June 16 plots at range of 93 - 94%, and was lowest in 16 May plot. Milled rice yield was the highest in June 1 and June 16 at rage of 538 - 555 kg/10a, and was the lowest in May 16. Head rice yield showed same tendency to milled rice yield. Protein content was not significantly different among treatments except June 1, however, it was slightly increased in the later transplanting plots. Amylose content was increased in the later transplanting plots. According to the regression curve of transplanting dates and grain yield, the optimal transplanting date of ‘Sukwang’ was June 10 in the southwestern plain area in Korea.