山东省莱芜市农科所生物技术开发中心培育成功特大果型、特晚熟、品质上乘、早实丰产高效桃树新品种”冬宝—21。冬宝—21是生物技术开发中心技术人员经过数年的试种从民间芽变中选育出来的。其在自然条件下栽培，果实成熟期一般在霜降至立冬之间。单果重33~500克，最高可达880 Biotechnology Development Center of Agricultural Science and Technology, Laiwu City, Shandong Province, cultivates the success of extra large fruit type, especially late-maturing, high quality, early seed production and efficient high-yield peach new varieties of "Dongbao -21. Dongbao -21 is biotechnology development center technicians through Years of trial breeding from the folk bud mutation out of its cultivation in natural conditions, the fruit maturity is generally frost to the beginning of winter between single fruit weight 33 ~ 500 grams, up to 880