青研１号系以玉宝白菜８９３和黑龙江５号白菜２５３２两个自交不亲和系配制而成的夏播大白菜一代杂种。生长期４５～５０ｄ（天），耐热性强，抗病毒病、霜霉病和软腐病。平均每６６７ｍ２产净菜３１１０～３３４６ｋｇ。叶球近椭圆形，淡绿色，刺毛稀少，品质优良，商品性好。该品种已在山东、江苏、浙江、安徽、河南、湖北、福建等地推广种植。 Qingyan No.1 was a summer-sowed Chinese cabbage generation hybrid with two self-incompatibility lines, 89-3 of Emerald cabbage and 253-2 of Chinese cabbage of No. 5 in Heilongjiang province. Growing 45 ~ 50d (days), heat-resistant, anti-virus disease, downy mildew and soft rot disease. An average of 3110 ~ 3346kg net yield per 667m2. Leaves nearly oval ball, light green, scarce sparse, good quality, good merchandise. The variety has been in Shandong, Jiangsu, Zhejiang, Anhui, Henan, Hubei, Fujian and other places to promote planting.