近年来,由于遭受丛枝病的危害,致使我县苦楝树大部植株陆续死亡,严重地影响“四旁”绿化的效果,是当前发展苦楝生产的严重障碍。为了摸索病害发生规律和防治措施,我们对该病进行研究。现将观察和试验情况整理如下。一、病害发生规律观察与分析1.病害发生时期:据观察,不同树令丛枝病发生时期是不一致的(见下表)。 In recent years, due to the damage caused by the Brouch disease, most of the plants of Melia azedarach in our county have died one after another, seriously affecting the “greening” effect. This is a serious obstacle to the current development of Melia azedarach. In order to explore the law of occurrence and prevention of disease, we study the disease. Now observe and test the situation as follows. First, the observation and analysis of disease occurrence 1. Disease Occurrence Period: It is observed that different trees make the occurrence of arbuscular myopathy is inconsistent (see table below).