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礼泉县现有苹果种植面积2万多公顷,是我国起步较早、规模化发展苹果产业最成功的一个县。随着时间的推移苹果腐烂病已经成为该县最严重病害之一。发病率在30%~40%,严重者高达60%~70%。如不采取有效措施,将威胁到礼泉苹果产业的正常发展。一、腐烂病症状和病菌特性腐烂病有溃疡型和枝枯型两种类型症状。其病菌是一种寄生性很弱的兼性寄生菌,从伤口和死亡组织
Liquan existing apple planting area of more than 20,000 hectares, is China started earlier, large-scale development of the apple industry’s most successful county. Over time, apple rot has become one of the most serious diseases in the county. The incidence of 30% to 40%, severe cases, up to 60% to 70%. If we do not take effective measures, it will threaten the normal development of the apple industry in Liquan. First, the symptoms of rot and disease characteristics Rot disease ulcer-type and branch-type two types of symptoms. Its pathogen is a parasitic weak facultative parasites, from wounds and dead tissue