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苏联沃龙涅什地区林管区,60年代开始建立种子园150多公顷,其中也拈嫁接种子园40多公顷。这里1961-1963年建立了3.3公顷的松树无性系种子园。这是建立在黑土中心地带的第一个嫁接种子园。建立种子园的接穗,是在索莫夫斯克和沃龙涅什林管区,根据树的表现型从28株优树上取的。树龄为90～llO年,直径为38～64厘米,高为30.2～39.7米。枝下高为15～20米。嫁接是在1957年造的每3排株行距为2×O.5米的松树人工林上进行的,平均4米一组嫁接2～3株。嫁接方法是髓心形
The forest zone of the Voronezh region in the Soviet Union started to build more than 150 hectares of seed orchards in the 1960s, of which more than 40 hectares were planted for seed grafting. Here 1961-1963 established 3.3 hectares of pine clonal seed orchard. This is the first grafted seed garden built in the heart of the black soil. The scions for the establishment of the seed garden were taken from 28 elite trees on the basis of the tree phenotype in the Somovsk and Voronezh regions. Tree age of 90 ~ llO years, a diameter of 38 to 64 cm, a high of 30.2 to 39.7 meters. Branch high for 15 to 20 meters. The grafting was conducted on pine plantations with a row spacing of 2 × 0.5 meters per 3 rows made in 1957, with an average of 4 m grafted 2 to 3 grafts. Grafting method is pith-shaped