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近年来,山楂花腐病在鞍山地区为害日趋严重,已成为山楂生产中的一种主要病害。这种病害的发生对山楂的树势和产量影响很大,个别多雨年份,常造成果园绝产。据鞍山郊区唐家房乡摩云山村果园调查,1979年病叶率为8.4～10％,病果率为54.6～85％;1982年病叶率为24.8～571.％,病果率达93.4～98％,经济损失很大。从1983年以来,我们在省果树研究所
In recent years, hawthorn flower rot is increasingly serious in Anshan area, has become a major disease in the production of hawthorn. The occurrence of this disease has a great impact on the tree vigor and yield of the hawthorn. Individual rainy years often result in the orchard becoming absolutely dead. According to the investigation of the orchards in Mount Yunshan Village, Tangjiafang Township, Anshan City, the diseased leaf rate was 8.4-10% in 1979 and the disease-fruit rate was 54.6% -85%. The diseased leaf rate in 1982 was 24.8-557%, and the rate of diseased fruit reached 93.4-98 %, Great economic loss. Since 1983, we are at the Provincial Fruit Tree Research Institute