效地减少病菌的初侵染机会,减轻发病。 二、清洁果园降低初侵染源 1.清除残体,集中烧毁。葡萄白腐病菌主要随 病残体越冬,’所以,在葡萄采收后应立即把干果、 干穗、落叶、残枝等清扫干净,并用火烧掉。但不 可将枯枝落叶等病残体深埋,因为白腐病菌可在土 壤中腐生1—2年,深埋有 Effectively reduce the chance of initial infection of germs, reduce the incidence. Second, clean the orchard to reduce the source of primary infection 1. Clear debris, concentrated burned. Grape white rot bacteria mainly with the winter sickness, ’Therefore, immediately after the harvest of dried grapes, dried spikes, leaves, branches and other clean, and burned with fire. However, litter and other diseases and debris can not be buried, because the white rot bacteria can be saprophytic in the soil 1-2 years, buried deep