香榧细菌性褐腐病主要为害果实,产生褐腐症状,病果大多脱落,影响产量很大。病原细菌是胡萝卜软腐欧氏菌[Erwinia carotovora(Jones) Bergey et al]。 该病在5月上旬开始发生,5月下旬为发病高峰期;病果也在 5月下旬开始脱落,6月上旬为落果高峰期。果实套袋防病的效果很明显,药剂防治以代森铵和退菌特的效果较好。 Xiangxi bacterial brown rot mainly harmful to fruits, produce brown rot symptoms, fruit mostly fall off, affecting the yield. The pathogen is Erwinia carotovora (Jones) Bergey et al. The disease began in early May, late May peak incidence; disease also began to fall off in late May, early June is the peak of falling fruit. Fruit bagging disease prevention effect is obvious, the agent prevention and the withdrawal of ammonium and better results.