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大樱桃上市早,色泽艳丽,营养丰富,经济价值高,深受果农及消费者的喜爱。但是,不少园片的大樱桃树患有根颈腐烂病,造成大量死树的严重局面。据我们在烟台市芝罘区调查,该病多发生于3—15年生的树,尤其是初果期树(5年以上)发病较重,病株率达85%。发病部位先于根颈,以后逐渐向骨干枝蔓延,皮层与表皮(?)织受到破坏,出现溃烂,形成水渍状病斑,地上部营养生长衰弱,生殖生长转旺,成花多,座果少,最后导致整株死亡。
Cherry early market, bright color, nutrient-rich, high economic value, by farmers and consumers. However, a large number of garden cherry trees suffer from rotting roots and cause a serious shortage of dead trees. According to our survey in Zhifu District, Yantai City, the disease mostly occurs in trees aged 3 to 15 years, especially in early-stage trees (more than 5 years), with a serious incidence of 85% of diseased plants. The diseased part of the diseased part precedes the root neck and then gradually spreads to the backbone branches. The cortex and the epidermis (?) Tissue are damaged and ulcerated, resulting in a watery stain-like lesion. The vegetative growth is weak, the reproductive growth turns to flourish, Fruit less, eventually leading to death of the entire plant.