全国最大的杂交稻制种乡──江苏省建湖县庆丰乡的800公斤汕优63杂交稻种子,在1989年首次启运销往摩洛哥,这是按照“三系七圃法”生产出的种子。 庆丰乡是江苏先锋杂交稻良种开发公司重点生产基地。近年来,该乡坚持走科技兴农之路,先后与南京农业大学等3所大专院校“联姻结亲” 800 kilograms of Shanyou 63 hybrid rice seeds, the largest hybrid rice seedling in the country ─ Qingfeng Township, Jianhu County, Jiangsu Province, was first shipped to Morocco in 1989. It was produced in accordance with the “three lines and seven nurseries” seed. Qingfeng Township is Jiangsu Pioneer hybrid rice seed development company key production base. In recent years, the township adhere to the road of agriculture through science and technology, met with Nanjing Agricultural University and other tertiary institutions, “marriage and marriage”