汕油21是采用汕油71作母本、汕油89-2作父本进行有性杂交选育而成的油用型花生新品种，具有高产、高油、高抗锈病和叶斑病、适应性广等特点，其含油率高达54.72%。该品种于2004年通过全国农作物品种审定，适宜在我国南方花生产区推广种植；栽培管理上注意采用适当密植、增施肥料、及时除虫和适期收获等措施。
Shanyou 21 was a new Oil-used peanut variety. It was developed from a multicross of Shanyou 71 × Shanyou 89-2. It possessed stable high yield, high resistance to rust and leafpot, high oil content and broad adaptiveness. It possessed a high oil content as 54.72%. It was released by National Crops Variety Approval Committee in 2004. The cultivation technologies of Shanyou 21, including sowing as early as possible in season, suitably dense sowing, additional application fertilizers, preventing drought and waterlogging, controlling pests and weeds in time, and harvesting in season.