柳树是我省乡土速生树种,为广大群众所喜爱。但近年来在我省的临沂、日照、费县、平邑、沂南、沂水、菏泽、济宁、枣庄、胶南等地的柳树上,常常可以看到一个个纺锤形的大瘤,有的发生在干基;有的发生在主干中部或粗枝上。这种大瘤群众俗称“柳瘿”,或“大肚子”。柳瘿的大小不一,一般要比正常的枝干粗1—5倍。大树小 Willow is our province native fast-growing tree species, loved by the masses. But in recent years, in our province, Linyi, Rizhao, Fei County, Pingyi, Yinan, Yishui, Heze, Jining, Zaozhuang, Jiaonan and other places willow, you can often see a spindle-shaped tumor, and some Occurs in the dry base; some occurred in the middle of the trunk or thick branches. This large tumor commonly known as “Liubi”, or “pregnant.” Different sizes of willow, usually 1-5 times larger than normal branches. Small tree