1991年,江苏省建湖县杂交水稻种子生产经历了百年罕见的特大洪涝灾害后,获得了令人欣喜的好收成。全县27620亩汕优63等制种组合,总产503.35万公斤,平均亩产182公斤,是自1977年制种15年来,平均亩产超过150公斤的第四个高产年。去年6月下旬至7月中旬,正值母本秧栽后不久,处于即将分蘖 In 1991, the Jianshu County, Jiangsu Province hybrid rice seed production experienced a rare catastrophic floods, received a delightful good harvest. The county 27,620 acres of Shanyou 63 and other seed production, total output 5033500 kilograms, average yield 182 kilograms, is the seed production since 1977 15 years, the average yield of more than 150 kilograms of the fourth high yield. Last year in late June to mid-July, just after the mother plant seedlings planted soon after the tiller