果树轮纹病危害果实、枝干,病菌孢子常以皮孔为中心对果树树体侵染,造成“粗皮病”。果实的病原菌主要来自枝干病斑,4月份开始产生大量孢子,并侵染树体,果实受害一般从落花后至近成熟期均可侵入,近成熟期表现症状。据以上轮纹病发生规律,用9281即可解除果农的心愁:早春4月份枝干上进行病斑喷涂,即在病斑处及周围3—5 Fruit tree rot disease damage fruits, stems, bacteria spores often lenticular fruit tree body center infection, resulting in “skin disease ”. The pathogen of the fruit is mainly from the branch stem spot, which starts to produce a large number of spores and invades the tree body in April. The damage of the fruit can generally invade into the near maturity stage from inflorescence to near maturity. According to the above pattern of occurrence of rotundacy, 9281 can be used to relieve the worry of the peasants: In spring April, the branches are sprayed with lesion, that is, at the lesion and around 3-5