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박홍규 ( H. K. Park ),이경보 ( K. B. Lee ),최원영 ( W. Y. Choi ),최민규 ( M. G. Choi ),김상수 ( S. S. Kim ),김정곤 ( C. K. Kim ),( Migging Xu ) 한국농림기상학회 2006 한국농림기상학회지 Vol.8 No.2
The objectives of this study are to determine the primary yield components responsible for yield differences in a subtropical environment of the Hunan province China and in a temperature environment of Honam province Korea. Field experiments were conducted in a subtropical environment in Hunan province China during 2002 and in a temperate environment in Honam province Korea during 2003. Seven rice cultivars were grown under optimum crop management in each experiment field. Yield, yield components and plant dry matter were determined at maturation. The highest yield (567kg/10a) was produced at Honam province by Jinyou 207, a Chinese cultivar. The maximum yield at Hunan province was 453kg/10a by Sanyou 63. On the average across cultivars, Honam produced 23% greater yields than Hunan. Sink size (spikelets per ㎡) was responsible for these yield differences. Panicle number per ㎡ was much greater at Honam.