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贝拉多娜是日本在９０年代初选育出的李极早熟品种，。我们于１９９５年从日本引进，１９９６年将繁育的速生苗定植于辛集市农业试验场，栽植面积约 ０．２ ｈｍ２，行株距 ５ ｍ×３ ｍ，以同期引进的日本李王为授粉树。１９９７年开花株率３０％， １９９８年株产 １１ ｋｇ?
Bella Dona is a Japanese poplar that was bred early in the 90s. We imported from Japan in 1995, and planted the fast-growing seedlings in Xinji Agricultural Experimental Field in 1996. The planting area is about 0.2 hm2 and the row spacing is 5 m × 3 m. Pollination tree was introduced by Japan Liwang in the same period. Flowering rate of 30% in 1997, producing 11 kg in 1998?