山东省农业科学院大白菜良种服务中心经过三个“五年计划”的国家抗病育种攻关，１９９６年育成了多抗、广适夏结球自莱专用品种──夏翠，攻克了进口夏阳类品种因气候不适或不抗病毒病而导致大幅度减产甚至绝产的难题。经专家鉴定该品种在我国尤其北方地区具有广阔的推广应用 Chinese Academy of Agricultural Sciences, Shandong Academy of Agricultural Service of Chinese cabbage after three “five-year plan” national disease breeding research, in 1996 bred a multi-resistance, wide adaptability Xia knot Levin special varieties ─ ─ summer green, capture the import of Xia Yang class Varieties due to climate discomfort or anti-virus disease led to a substantial reduction in production or even the problem of production. The experts identified the species in our country, especially in the northern region has a broad application