【摘要】 采取实地定点观察调查及采样送检鉴定等方法,对福建桃僵芽现象发生概况、时间、规律及诱因进行研究。结果表明:福建桃僵芽现象为近年来新出现的一种会严重影响桃产量、品质与树势的芽体死亡或衰败现象;大量发生时间为芽体萌动期;发生程度品种间差异较大,以海拔较低、中下坡段、露地栽培、距梨近的桃园为重;最主要最直接诱因可能为遭受拟茎点霉菌侵害所致;花芽萌动期喷施对应杀菌剂可明显降低桃僵芽发生程度。更多还原

【Abstract】 The conditions,symptoms,regularity and inducement of wizened bud incidents on the peach trees in southern China were investigated.The disease was tracked by field survey,and the infected tissues dissected for microscopic observations.The disease was characterized by the appearance of withered,shriveled and dead buds.It seriously impaired the yield,quality and vigor of the peach plants.As a result,the fruit production declined in recent years in the region.The disease occurred primarily at the sprouting phase of floral buds.But severity of the outbreak varied considerably by peach variety.Plants at the orchards at low altitude,in middle and lower sections of a sloping land,under open-field cultivation,or near a pear plantation were significantly more vulnerable than other localities.The major infecting pathogen was identified to be Phomopsis fukushii.By spraying bactericides during the time when the floral buds sprout,the incidence of wizened buds could be significantly reduced.更多还原