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Y.Murata ＆ S.Matsushima(1975)曾估算水稻最高谷粒产量为19.1吨/公顷(折2546.7斤/亩),目前实际高产纪录远未达到这个水平.日本从1949～1968年开展的“稻作日本第一”竞赛,20年间以1960年秋田县的工藤雄一用“大鸟”品种取得糙米单产1052.2公斤/10公亩(折1402.9斤/亩)居首位.国际水稻研究所1967年曾以IR8获得稻谷单产1379斤/亩.平野1968年也以IR8在柬埔寨马德望取得稻谷单产1423斤/亩.我国杂交水稻育成推广后,仅几年时间,高产典型不断涌现.1976、1977年江苏省铜
Y.Murata & S.Matsushima (1975) once estimated that the maximum grain yield of rice is 19.1 tons / hectare (2546.7 kg / mu), and the current record of actual high yield is far from this level. From “1949 ~ 1968” Japan first “competition, in 20 years to obtain a brown rice yield of 1052.2 kg / 10 acres (fold 1402.9 kg / mu) brown rice yield with a variety of” big bird "of Kudo Kudo in Akita in 1960. International Rice Research Institute 1967 To obtain IRR8 paddy yield of 1379 kg / mu .In 1968 also IR8 in Cambodia, Battambang access to yield 1423 kg / mu rice .China’s hybrid rice after the promotion of breeding, only a few years, high-yield typical continue to emerge .1976, 1977, Jiangsu Province copper