怎样防止果树抽条刘义奇张国东（河北省迁西县林业局上营乡林业站）果树越冬后枝干失水干枯，表皮皱缩、干裂，皮层和木质部变为黄白色，称为果树抽条。果树发生抽条，轻者造成树冠残缺，发芽迟缓，开花结果不良；严重的造成全株枯死。果树越冬后抽条不但消耗积累的营养，... How to prevent fruit tree pumping Liu Yiqi Zhang Guodong (Forestry Bureau of Qianxi County, Qianxi County, Hebei Province Forestry Station) After the winter fruit trees dry water loss, epidermal shrinkage, dry crack, cortex and xylem into yellow and white, known as the fruit tree pumping. Picking occurs in the fruit tree, the light caused by incomplete crown, germination slow, poor flowering results; severe cause whole plant withered. After the winter wintering fruit trees not only consume the accumulated nutrients, ...