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近几年,苹果树腐烂病在我省处于建国以来第四次大流行期。受害轻的,树势削弱,产量降低;受害重的,死枝死树,甚至毁园,给生产造成了严重损失。根据苹果树腐烂病的流行规律,初步预测,今年我省苹果树腐烂病将会中等偏重发生,有的果园可能严重,其主要依据如下:1.大小年:果树的大小年结果现象,是影响成龄树腐烂病发生的一个重要因素。通常大年结果,当年秋季和第二年春天腐烂病则重。去年我省苹果总体讲是个大年,部分地区和果园属特大年结果,树体营养消耗过大,这无疑会加重腐烂病的发生为害。
In recent years, apple tree rot disease in the province since the founding of the fourth pandemic. Victims of light, weakening the tree, reducing production; victims of heavy dead trees, or even destroy the garden, resulting in serious losses to production. According to the epidemic law of apple tree rot disease, it is initially predicted that the apple tree rot disease will be moderately weighted in our province this year, and some orchards may be serious. The main basis is as follows: 1. Year of the year: the annual fruit size phenomenon is the effect An important factor in the occurrence of rotting diseases in adult trees. The annual results are usually very heavy, with decay in spring and autumn in those years. Last year, Apple Province as a whole is a big year in our province, some areas and orchards are extremely large annual results, excessive consumption of tree nutrition, which will undoubtedly increase the incidence of rot disease.