1特性“大十”果桑是广东省蚕桑科学研究所育成的三倍体无核果桑品种。奉华市莼湖杨家新品种试验圃(下称杨家苗圃)于1997年先后从广东等地引进9个品种,经对比观察结果性能以“大十”品种较为理想,表现为:一是桑果成熟早一般年份4月中下旬就有少量成熟果出现。二是结果期较长,4 1 Features “Big Ten” fruit mulberry is a silkworm mulberry cultivated in Guangdong Province Institute of Sericulture. Fenghua City Li Lake Yang new varieties of experimental nursery (hereinafter referred to as Yang nursery) in 1997 has introduced nine varieties from Guangdong and other places, the results of the comparative observation to “Big Ten” varieties are more ideal, as follows: First, mulberry fruit Mature early general year in late April there is a small amount of ripe fruit appear. Second, the result is longer, 4