因冬春修剪、机械损伤、人畜损伤、冻害、风害等造成的苗木伤口,必须及时护理,以减少树体水分损失,防止受冻和病菌浸染,促进伤口愈合,恢复树势。一、切除对已枯死枝条,可从伤折处周围锯平或剪去。轻伤枝、受冻害和风害的枝条宜在界限分明处切除,切口要光滑,整理伤 Due to winter and spring pruning, mechanical damage, livestock and poultry injuries, frost damage, wind damage caused by seedling wounds, care must be promptly to reduce the water loss of trees to prevent the infection by cold and bacteria to promote wound healing and restore the tree vigor. First, cut off the dead branches, sawing or cut off from around the wound. Slightly injured branches, frost damage and wind damage branches should be clearly cut at the boundaries, incision should be smooth, finishing injury