苦楝(Melia azedarach)近年来,由于簇顶病的危害而造成损失。在广州华南农学院栽培的苦楝,发病植株几达100％,死亡率达30％以上。广东各地均有此病发生,川楝亦受同样的危害。为了弄清其病原,自1978年以来,对苦楝 Melia azedarach In recent years, due to the damage caused by the top of the cluster loss. Melia azedarach cultivated in South China Agricultural College in Guangzhou, the incidence of plants up to 100%, the mortality rate of 30% or more. This disease has occurred in all parts of Guangdong, Chuanxian also suffered the same harm. To clarify its pathogen, since 1983, against Melia