土豆新品种双丰(原系统号为72—33—2),是我所于1972年从东北农科院1971年杂交制种实生苗中选出的。1974年秋,开始在上海郊区多点试种,并进行生产鉴定。1976年秋季定名。1977年春季栽培面积约600亩,秋季约1500亩,青浦县华潮公社秦家生产队13亩双丰,平均亩产2500斤,其中2～4亩平均亩产3378斤,超过了该队的历史水平。 The new potato variety Shuangfeng (the original system number is 72-33-2) was selected from the seed germplasm of Northeast China Academy of Agricultural Sciences in 1971 by hybridization in 1972. The autumn of 1974, began in Shanghai suburbs more trial, and production appraisal. 1976 autumn named. In the spring of 1977 about 600 acres of cultivated area, about 1,500 acres in autumn, Qingpu County, tidal commune Qin team 13 acres of Shuangfeng, the average yield of 2,500 kg, of which 2 to 4 mu average yield 3378 kg, more than the team’s Historical level.