青油 331系青海省农林科学院作物所育成的双低春性甘蓝型油菜波里马细胞质雄性不育三系杂交种。 1996年 11月经青海省农作物品种审定委员会审定 ,成为北方春油菜区育成的第一个双低油菜杂交种。 1998年通过新疆、内蒙古自治区农作物品种审定委员会审定。 1998年被原国家科委定 Qingyou 331 is a double-low spring three-line hybrid of Pollen cytoplasmic male sterile cultivars bred in crops of Qinghai Academy of Agriculture and Forestry Sciences. In November 1996, it was approved by Qinghai Province Crop Variety Approval Committee and became the first double low rape hybrid breeding bred in northern spring rapeseed area. In 1998 through Xinjiang, Inner Mongolia Autonomous Region Crop Variety Approval Committee validation. 1998 was the former State Science Commission