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苹果腐烂病(Valsa mali Miyaba et Yamada)为苹果树重要病害之一。病菌分生孢子器的形成规律及分生孢子在田间消长传播规律为病菌整个侵染循环中一重要环节。1981—1982年我们对此进行了详尽的观察。在我所苹果试验园二十年生苹果树上选出固定的新溃疡病斑、旧溃疡斑和旧溃疡扩展斑(新扩展部位
Valsa mali Miyaba et Yamada is one of the most important diseases of apple trees. The formation of pathogen conidia and conidia in the growth and spread of the law of bacteria in the entire infection cycle an important part of the cycle. We made a detailed observation of this from 1981 to 1982. A fixed new ulcer lesion, an old ulcer spot, and an old ulcer spread spot (newly expanded site) were selected on an apple tree in a twenty-year-old apple tree garden