渭源县会川公社南沟大队回乡知识青年刘海兰在党的培养和贫下中农的教育下,在甘肃农业科学院会川实验组的帮助下,同贫下中农、社员群众一起,先后选育出四个洋芋优良品种,为促进农业的发展做出了贡献。扎根农村干革命一九六三年,刘海兰响应毛主席的伟大号召,从学校回到了农村,决心沿着毛主席指引的方向,在广阔天地里锻炼成长,为建 Under the education of the party and the poor middle peasants, with the help of the experimental group of Huichuan of Gansu Academy of Agricultural Sciences, together with the poor middle peasants and members of the masses, Liu Hailan, a young and educated youth who came back to the township, Four potato varieties, to promote the development of agriculture has made its contribution. Take root in the rural revolutionary revolution In 1963, in response to Chairman Mao’s great call, Liu Hailan returned from the school to the countryside and is determined to exercise its growth in a vast world under the guidance of Chairman Mao.