桃缩叶病主要危害叶片,严重时危害新梢、幼果和花。当嫩叶刚刚从芽抽出时即可感病,使嫩叶局部或全部皱缩扭曲,并随着叶片的展开而加重皱缩扭曲程度,以致病叶肿大,叶肉肥厚质脆呈现红褐色,继而在病部表面产生一层灰白色粉状物,病叶逐渐焦枯脱落;新梢被侵害后变粗而稍微弯曲,节间缩短,病叶簇生,严重时病枝枯死;幼果被害后初期产生黄色或红色的隆起斑块,发育畸形,果面龟裂,花瓣肥大变长,桃果产量下降、品质变差。 Peach leaf disease the main damage leaves, in severe damage to shoots, young fruit and flowers. When the young leaves just out of the buds can be susceptible to the young leaves of some or all of the shrinkage and distortion, and with the expansion of the leaves and increase the degree of shrinkage and distortions, resulting in diseased leaves large, crisp leafy fat crisp reddish brown , And then in the diseased part of the surface to produce a layer of white powder, diseased leaves gradually scorched off; shoots were damaged after thick and slightly curved, internodes shortened, diseased leaves clustered, severe disease when the dead; early young after the victims were killed Produce yellow or red bulge plaque, deformity, fruit cracking, petals hypertrophy and longer, peach fruit production decreased, the quality of the worse.