丹东栗(Castanea crenata Sieb. et Zucc。)属日本栗系统,是辽宁栗树主产的主栽种。集中分布在辽宁省宽甸、东沟、凤城、丹东市振安、岫岩等几个县(区)。目前年产量已达6500t以上。但由于长期实生繁埴,现有实生树良莠不齐,普遍存在晚实、低产、品质较差等问题。其原因除栽培管理比较粗放外,主要是缺少良种。为 Castanea crenata Sieb. Et Zucc. Is a Japanese chestnut system, which is the main production of Liaoning chestnut tree. Concentrated distribution in Kuandian, Donggou, Fengcheng, Dandong City, Zhen’an, Xiuyan and other counties (districts). The current annual output has reached more than 6500t. However, because of long-term livelihood, the existing real-life trees are mixed with each other, and there are common problems such as late arrival, low yield and poor quality. The reasons for its cultivation and management in addition to more extensive, mainly the lack of good seed. for