果树抽条是指幼龄果树越冬后枝干失水干枯的现象。其症状表现是表皮皱缩、于裂,皮层和木质部变为黄白色,并常与冻害、日灼相伴发生。在冬春冻土深、解冻迟而地温低,早春气候干燥多风、蒸发量大、日照率高的北方 Fruit tree pumping refers to the juvenile fruit trees after winter dry water loss phenomenon. The symptoms of the epidermis shrinkage, in the crack, cortex and xylem into yellow-white, and often associated with frostbite, accompanied by sunburn. Frozen soil in winter and spring deep, thaw delay and low temperature, early spring dry and windy climate, large evaporation, high sunshine rate in the north