论文部分内容阅读
杨树腐烂病又称烂皮病,主要发生于杨树的主干和枝条上,发病症状主要表现为皮层组织腐烂、下陷、失水、龟裂,有酒糟味,形成层与木质部分离。该病一年发生两次,当气温在7℃以上时,该病开始发生;当气温超过28℃和11月份以后病斑停止
Poplar rot disease, also known as rotten skin disease, occurs mainly in the trunk and branches of poplar, the main symptoms of the onset of cortical tissue decay, subsidence, dehydration, cracking, wine bad smell, formation and xylem separation. The disease occurs twice a year, when the temperature is above 7 ℃, the disease begins to occur; when the temperature exceeds 28 ℃ and lesions stop after November